diff options
36 files changed, 7175 insertions, 176 deletions
diff --git a/configure.ac b/configure.ac index 48813503..b5d79456 100644 --- a/configure.ac +++ b/configure.ac @@ -19,7 +19,7 @@ # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. AC_PREREQ(2.57) -AC_INIT([libdrm], 2.0.2, [dri-devel@lists.sourceforge.net], libdrm) +AC_INIT([libdrm], 2.1.2-mm, [dri-devel@lists.sourceforge.net], libdrm) AC_CONFIG_SRCDIR([Makefile.am]) AM_INIT_AUTOMAKE([dist-bzip2]) @@ -30,6 +30,7 @@ AC_PROG_LIBTOOL AC_PROG_CC AC_HEADER_STDC +AC_SYS_LARGEFILE pkgconfigdir=${libdir}/pkgconfig AC_SUBST(pkgconfigdir) diff --git a/libdrm/Makefile.am b/libdrm/Makefile.am index b12e87fa..91a7e5dc 100644 --- a/libdrm/Makefile.am +++ b/libdrm/Makefile.am @@ -26,6 +26,6 @@ AM_CFLAGS = -I$(top_srcdir)/shared-core libdrm_la_SOURCES = xf86drm.c xf86drmHash.c xf86drmRandom.c xf86drmSL.c libdrmincludedir = ${includedir} -libdrminclude_HEADERS = xf86drm.h +libdrminclude_HEADERS = xf86drm.h xf86mm.h EXTRA_DIST = ChangeLog TODO diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c index d4f80b4e..9047c8db 100644 --- a/libdrm/xf86drm.c +++ b/libdrm/xf86drm.c @@ -46,6 +46,9 @@ # include <sys/mman.h> # endif #else +# ifdef HAVE_CONFIG_H +# include <config.h> +# endif # include <stdio.h> # include <stdlib.h> # include <unistd.h> @@ -66,6 +69,7 @@ # include "drm.h" #endif + /* Not all systems have MAP_FAILED defined */ #ifndef MAP_FAILED #define MAP_FAILED ((void *)-1) @@ -2252,3 +2256,963 @@ int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data, } return 0; } + +#ifdef __linux__ + +/* + * Valid flags are + * DRM_FENCE_FLAG_EMIT + * DRM_FENCE_FLAG_SHAREABLE + * DRM_FENCE_MASK_DRIVER + */ + +int drmFenceCreate(int fd, unsigned flags, int class,unsigned type, + drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.type = type; + arg.class = class; + arg.op = drm_fence_create; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->handle = arg.handle; + fence->class = arg.class; + fence->type = arg.type; + fence->flags = arg.flags; + fence->signaled = 0; + return 0; +} + +/* + * Valid flags are + * DRM_FENCE_FLAG_SHAREABLE + * DRM_FENCE_MASK_DRIVER + */ + +int drmFenceBuffers(int fd, unsigned flags, drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.flags = flags; + arg.op = drm_fence_buffers; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->handle = arg.handle; + fence->class = arg.class; + fence->type = arg.type; + fence->flags = arg.flags; + fence->signaled = 0; + return 0; +} + +int drmFenceDestroy(int fd, const drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = fence->handle; + arg.op = drm_fence_destroy; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + return 0; +} + +int drmFenceReference(int fd, unsigned handle, drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = handle; + arg.op = drm_fence_reference; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->handle = arg.handle; + fence->class = arg.class; + fence->type = arg.type; + fence->flags = arg.flags; + fence->signaled = arg.signaled; + return 0; +} + +int drmFenceUnreference(int fd, const drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = fence->handle; + arg.op = drm_fence_unreference; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + return 0; +} + +int drmFenceFlush(int fd, drmFence *fence, unsigned flush_type) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = fence->handle; + arg.type = flush_type; + arg.op = drm_fence_flush; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->class = arg.class; + fence->type = arg.type; + fence->signaled = arg.signaled; + return 0; +} + +int drmFenceUpdate(int fd, drmFence *fence) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = fence->handle; + arg.op = drm_fence_signaled; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->class = arg.class; + fence->type = arg.type; + fence->signaled = arg.signaled; + return 0; +} + +int drmFenceSignaled(int fd, drmFence *fence, unsigned fenceType, + int *signaled) +{ + int + ret; + + if ((fence->flags & DRM_FENCE_FLAG_SHAREABLE) || + ((fenceType & fence->signaled) != fenceType)) { + + ret = drmFenceFlush(fd, fence, fenceType); + if (ret) + return ret; + } + + *signaled = ((fenceType & fence->signaled) == fenceType); + + return 0; +} + +/* + * Valid flags are + * DRM_FENCE_FLAG_SHAREABLE + * DRM_FENCE_MASK_DRIVER + */ + + +int drmFenceEmit(int fd, unsigned flags, drmFence *fence, unsigned emit_type) +{ + drm_fence_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.flags = flags; + arg.handle = fence->handle; + arg.type = emit_type; + arg.op = drm_fence_emit; + if (ioctl(fd, DRM_IOCTL_FENCE, &arg)) + return -errno; + fence->class = arg.class; + fence->type = arg.type; + fence->signaled = arg.signaled; + return 0; +} + +/* + * Valid flags are + * DRM_FENCE_FLAG_WAIT_LAZY + * DRM_FENCE_FLAG_WAIT_IGNORE_SIGNALS + */ + +int drmFenceWait(int fd, unsigned flags, drmFence *fence, unsigned flush_type) +{ + drm_fence_arg_t arg; + int ret; + + if (flush_type == 0) { + flush_type = fence->type; + } + + if (!(fence->flags & DRM_FENCE_FLAG_SHAREABLE)) { + if ((flush_type & fence->signaled) == flush_type) { + return 0; + } + } + + memset(&arg, 0, sizeof(arg)); + arg.handle = fence->handle; + arg.type = flush_type; + arg.flags = flags; + arg.op = drm_fence_wait; + do { + ret = ioctl(fd, DRM_IOCTL_FENCE, &arg); + } while (ret != 0 && errno == EAGAIN); + + if (ret) + return -errno; + + fence->class = arg.class; + fence->type = arg.type; + fence->signaled = arg.signaled; + return 0; +} + +static int drmAdjustListNodes(drmBOList *list) +{ + drmBONode *node; + drmMMListHead *l; + int ret = 0; + + while(list->numCurrent < list->numTarget) { + node = (drmBONode *) malloc(sizeof(*node)); + if (!node) { + ret = -ENOMEM; + break; + } + list->numCurrent++; + DRMLISTADD(&node->head, &list->free); + } + + while(list->numCurrent > list->numTarget) { + l = list->free.next; + if (l == &list->free) + break; + DRMLISTDEL(l); + node = DRMLISTENTRY(drmBONode, l, head); + free(node); + list->numCurrent--; + } + return ret; +} + +void drmBOFreeList(drmBOList *list) +{ + drmBONode *node; + drmMMListHead *l; + int ret = 0; + + l = list->list.next; + while(l != &list->list) { + DRMLISTDEL(l); + node = DRMLISTENTRY(drmBONode, l, head); + free(node); + l = list->free.next; + list->numCurrent--; + list->numOnList--; + } + + l = list->free.next; + while(l != &list->free) { + DRMLISTDEL(l); + node = DRMLISTENTRY(drmBONode, l, head); + free(node); + l = list->free.next; + list->numCurrent--; + } +} + +int drmBOResetList(drmBOList *list) { + + drmMMListHead *l; + int ret; + + ret = drmAdjustListNodes(list); + if (ret) + return ret; + + l = list->list.next; + while(l != &list->list) { + DRMLISTDEL(l); + DRMLISTADD(l, &list->free); + list->numOnList--; + l = list->list.next; + } + return drmAdjustListNodes(list); +} + +static drmBONode *drmAddListItem(drmBOList *list, drmBO *item, + unsigned long arg0, + unsigned long arg1) +{ + drmBONode *node; + drmMMListHead *l; + + l = list->free.next; + if (l == &list->free) { + node = (drmBONode *) malloc(sizeof(*node)); + if (!node) { + return NULL; + } + list->numCurrent++; + } else { + DRMLISTDEL(l); + node = DRMLISTENTRY(drmBONode, l, head); + } + node->buf = item; + node->arg0 = arg0; + node->arg1 = arg1; + DRMLISTADD(&node->head, &list->list); + list->numOnList++; + return node; +} + +void *drmBOListIterator(drmBOList *list) +{ + void *ret = list->list.next; + + if (ret == &list->list) + return NULL; + return ret; +} + +void *drmBOListNext(drmBOList *list, void *iterator) +{ + void *ret; + + drmMMListHead *l = (drmMMListHead *) iterator; + ret = l->next; + if (ret == &list->list) + return NULL; + return ret; +} + +drmBO *drmBOListBuf(void *iterator) +{ + drmBONode *node; + drmMMListHead *l = (drmMMListHead *) iterator; + node = DRMLISTENTRY(drmBONode, l, head); + + return node->buf; +} + + +int drmBOCreateList(int numTarget, drmBOList *list) +{ + DRMINITLISTHEAD(&list->list); + DRMINITLISTHEAD(&list->free); + list->numTarget = numTarget; + list->numCurrent = 0; + list->numOnList = 0; + return drmAdjustListNodes(list); +} + +static void drmBOCopyReply(const drm_bo_arg_reply_t *rep, + drmBO *buf) +{ + buf->handle = rep->handle; + buf->flags = rep->flags; + buf->size = rep->size; + buf->offset = rep->offset; + buf->mapHandle = rep->arg_handle; + buf->mask = rep->mask; + buf->start = rep->buffer_start; + buf->fenceFlags = rep->fence_flags; + buf->replyFlags = rep->rep_flags; +} + + + +int drmBOCreate(int fd, void *ttm, unsigned long start, unsigned long size, + void *user_buffer, drm_bo_type_t type, unsigned mask, + unsigned hint, drmBO *buf) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret; + + memset(buf, 0, sizeof(*buf)); + memset(&arg, 0, sizeof(arg)); + req->mask = mask; + req->hint = hint; + req->size = size; + req->type = type; + + buf->virtual = NULL; + + switch(type) { + case drm_bo_type_dc: + req->buffer_start = start; + break; + case drm_bo_type_user: + req->buffer_start = (unsigned long) user_buffer; + buf->virtual = user_buffer; + break; + case drm_bo_type_fake: + req->buffer_start = start; + break; + default: + return -EINVAL; + } + req->op = drm_bo_create; + + do { + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + } while (ret != 0 && errno == EAGAIN); + + if (ret) + return -errno; + if (!arg.handled) { + return -EFAULT; + } + if (rep->ret) { + fprintf(stderr, "Error %d\n", rep->ret); + return rep->ret; + } + + drmBOCopyReply(rep, buf); + buf->mapVirtual = NULL; + buf->mapCount = 0; + + return 0; +} + +int drmBODestroy(int fd, drmBO *buf) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + + if (buf->mapVirtual && (buf->type != drm_bo_type_fake)) { + (void) drmUnmap(buf->mapVirtual, buf->start + buf->size); + buf->mapVirtual = NULL; + buf->virtual = NULL; + } + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->op = drm_bo_destroy; + + if (ioctl(fd, DRM_IOCTL_BUFOBJ, &arg)) + return -errno; + if (!arg.handled) { + return -EFAULT; + } + if (rep->ret) { + return rep->ret; + } + + buf->handle = 0; + return 0; +} + +int drmBOReference(int fd, unsigned handle, drmBO *buf) +{ + + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + + memset(&arg, 0, sizeof(arg)); + req->handle = handle; + req->op = drm_bo_reference; + + if (ioctl(fd, DRM_IOCTL_BUFOBJ, &arg)) + return -errno; + if (!arg.handled) { + return -EFAULT; + } + if (rep->ret) { + return rep->ret; + } + + drmBOCopyReply(rep, buf); + buf->type = drm_bo_type_dc; + buf->mapVirtual = NULL; + buf->mapCount = 0; + buf->virtual = NULL; + + return 0; +} + +int drmBOUnReference(int fd, drmBO *buf) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + + + if (buf->mapVirtual && (buf->type != drm_bo_type_fake)) { + (void) munmap(buf->mapVirtual, buf->start + buf->size); + buf->mapVirtual = NULL; + buf->virtual = NULL; + } + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->op = drm_bo_unreference; + + if (ioctl(fd, DRM_IOCTL_BUFOBJ, &arg)) + return -errno; + if (!arg.handled) { + return -EFAULT; + } + if (rep->ret) { + return rep->ret; + } + + buf->handle = 0; + return 0; +} + +/* + * Flags can be DRM_BO_FLAG_READ, DRM_BO_FLAG_WRITE or'ed together + * Hint currently be DRM_BO_HINT_DONT_BLOCK, which makes the + * call return an -EBUSY if it can' immediately honor the mapping request. + */ + +int drmBOMap(int fd, drmBO *buf, unsigned mapFlags, unsigned mapHint, + void **address) +{ + + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret = 0; + + /* + * Make sure we have a virtual address of the buffer. + */ + + if (!buf->virtual && buf->type != drm_bo_type_fake) { + drmAddress virtual; + virtual = mmap(0, buf->size + buf->start, + PROT_READ | PROT_WRITE, MAP_SHARED, + fd, buf->mapHandle); + if (virtual == MAP_FAILED) { + ret = -errno; + } + if (ret) + return ret; + buf->mapVirtual = virtual; + buf->virtual = ((char *) virtual) + buf->start; + } + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->mask = mapFlags; + req->hint = mapHint; + req->op = drm_bo_map; + + /* + * May hang if the buffer object is busy. + * This IOCTL synchronizes the buffer. + */ + + do { + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + } while (ret != 0 && errno == EAGAIN); + + if (ret) + return ret; + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + + drmBOCopyReply(rep, buf); + buf->mapFlags = mapFlags; + ++buf->mapCount; + *address = buf->virtual; + + return 0; +} + +int drmBOUnmap(int fd, drmBO *buf) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->op = drm_bo_unmap; + + if (ioctl(fd, DRM_IOCTL_BUFOBJ, &arg)) { + return -errno; + } + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + + return 0; +} + +int drmBOValidate(int fd, drmBO *buf, unsigned flags, unsigned mask, + unsigned hint) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret = 0; + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->mask = flags; + req->hint = hint; + req->arg_handle = mask; /* Encode mask in the arg_handle field :/ */ + req->op = drm_bo_validate; + + do{ + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + } while (ret && errno == EAGAIN); + + if (ret) + return ret; + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + + drmBOCopyReply(rep, buf); + return 0; +} + + +int drmBOFence(int fd, drmBO *buf, unsigned flags, unsigned fenceHandle) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret = 0; + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->mask = flags; + req->arg_handle = fenceHandle; + req->op = drm_bo_validate; + + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + + if (ret) + return ret; + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + return 0; +} + +int drmBOInfo(int fd, drmBO *buf) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret = 0; + + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->op = drm_bo_info; + + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + + if (ret) + return ret; + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + drmBOCopyReply(rep, buf); + return 0; +} + +int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint) +{ + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t *rep = &arg.d.rep; + int ret = 0; + + if ((buf->flags & DRM_BO_FLAG_SHAREABLE) || + (buf->replyFlags & DRM_BO_REP_BUSY)) { + memset(&arg, 0, sizeof(arg)); + req->handle = buf->handle; + req->op = drm_bo_wait_idle; + req->hint = hint; + + do { + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, &arg); + } while (ret && errno == EAGAIN); + + if (ret) + return ret; + if (!arg.handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + drmBOCopyReply(rep, buf); + } + return 0; +} + +int drmBOBusy(int fd, drmBO *buf, int *busy) +{ + if (!(buf->flags & DRM_BO_FLAG_SHAREABLE) && + !(buf->replyFlags & DRM_BO_REP_BUSY)) { + *busy = 0; + return 0; + } else { + int ret = drmBOInfo(fd, buf); + if (ret) + return ret; + *busy = (buf->replyFlags & DRM_BO_REP_BUSY); + return 0; + } +} + + +int drmAddValidateItem(drmBOList *list, drmBO *buf, unsigned flags, + unsigned mask, + int *newItem) +{ + drmBONode *node, *cur; + unsigned oldFlags, newFlags; + drmMMListHead *l; + + *newItem = 0; + cur = NULL; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(drmBONode, l, head); + if (node->buf == buf) { + cur = node; + break; + } + } + if (!cur) { + cur = drmAddListItem(list, buf, flags, mask); + if (!cur) { + drmMsg("Out of memory creating validate list node.\n"); + return -ENOMEM; + } + *newItem = 1; + cur->arg0 = flags; + cur->arg1 = mask; + } else { + unsigned memMask = (cur->arg1 | mask) & DRM_BO_MASK_MEM; + unsigned memFlags = cur->arg0 & flags & memMask; + + if (!memFlags) { + drmMsg("Incompatible memory location requests " + "on validate list.\n"); + drmMsg("Previous flag: 0x%08lx, mask: 0x%08lx\n", + cur->arg0, cur->arg1); + drmMsg("Current flag: 0x%08lx, mask: 0x%08lx\n", + flags, mask); + return -EINVAL; + } + if (mask & cur->arg1 & ~DRM_BO_MASK_MEM & (cur->arg0 ^ flags)) { + drmMsg("Incompatible buffer flag requests " + "on validate list.\n"); + drmMsg("Previous flag: 0x%08lx, mask: 0x%08lx\n", + cur->arg0, cur->arg1); + drmMsg("Current flag: 0x%08lx, mask: 0x%08lx\n", + flags, mask); + return -EINVAL; + } + cur->arg1 |= mask; + cur->arg0 = memFlags | ((cur->arg0 | flags) & + cur->arg1 & ~DRM_BO_MASK_MEM); + } + return 0; +} + + +int drmBOValidateList(int fd, drmBOList *list) +{ + + drmBONode *node; + drmMMListHead *l; + drm_bo_arg_t *arg, *first; + drm_bo_arg_request_t *req; + drm_bo_arg_reply_t *rep; + drm_u64_t *prevNext = NULL; + drmBO *buf; + int ret; + + first = NULL; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(drmBONode, l, head); + + arg = &node->bo_arg; + req = &arg->d.req; + + if (!first) + first = arg; + + if (prevNext) + *prevNext = (unsigned long) arg; + + memset(arg, 0, sizeof(*arg)); + prevNext = &arg->next; + req->handle = node->buf->handle; + req->op = drm_bo_validate; + req->mask = node->arg0; + req->hint = 0; + req->arg_handle = node->arg1; + } + + if (!first) + return 0; + + do{ + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, first); + } while (ret && errno == EAGAIN); + + + if (ret) + return -errno; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(drmBONode, l, head); + arg = &node->bo_arg; + rep = &arg->d.rep; + + if (!arg->handled) { + drmMsg("Unhandled request\n"); + return -EFAULT; + } + if (rep->ret) + return rep->ret; + + buf = node->buf; + drmBOCopyReply(rep, buf); + } + + return 0; +} + + +int drmBOFenceList(int fd, drmBOList *list, unsigned fenceHandle) +{ + + drmBONode *node; + drmMMListHead *l; + drm_bo_arg_t *arg, *first; + drm_bo_arg_request_t *req; + drm_bo_arg_reply_t *rep; + drm_u64_t *prevNext = NULL; + drmBO *buf; + unsigned fence_flags; + int ret; + + first = NULL; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(drmBONode, l, head); + + arg = &node->bo_arg; + req = &arg->d.req; + + if (!first) + first = arg; + + if (prevNext) + *prevNext = (unsigned long) arg; + + memset(arg, 0, sizeof(*arg)); + prevNext = &arg->next; + req->handle = node->buf->handle; + req->op = drm_bo_fence; + req->mask = node->arg0; + req->arg_handle = fenceHandle; + } + + if (!first) + return 0; + + ret = ioctl(fd, DRM_IOCTL_BUFOBJ, first); + + if (ret) + return -errno; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(drmBONode, l, head); + + arg = &node->bo_arg; + rep = &arg->d.rep; + + if (!arg->handled) + return -EFAULT; + if (rep->ret) + return rep->ret; + drmBOCopyReply(rep, buf); + } + + return 0; +} + +int drmMMInit(int fd, unsigned long pOffset, unsigned long pSize, + unsigned memType) +{ + drm_mm_init_arg_t arg; + + memset(&arg, 0, sizeof(arg)); + arg.req.op = mm_init; + arg.req.p_offset = pOffset; + arg.req.p_size = pSize; + arg.req.mem_type = memType; + + if (ioctl(fd, DRM_IOCTL_MM_INIT, &arg)) + return -errno; + + return 0; +} + +int drmMMTakedown(int fd, unsigned memType) +{ + drm_mm_init_arg_t arg; + + + memset(&arg, 0, sizeof(arg)); + arg.req.op = mm_takedown; + arg.req.mem_type = memType; + + if (ioctl(fd, DRM_IOCTL_MM_INIT, &arg)) + return -errno; + + return 0; +} + +int drmMMLock(int fd, unsigned memType) +{ + drm_mm_init_arg_t arg; + int ret; + + memset(&arg, 0, sizeof(arg)); + arg.req.op = mm_lock; + arg.req.mem_type = memType; + + do{ + ret = ioctl(fd, DRM_IOCTL_MM_INIT, &arg); + } while (ret && errno == EAGAIN); + + return ret; +} + +int drmMMUnlock(int fd, unsigned memType) +{ + drm_mm_init_arg_t arg; + int ret; + + memset(&arg, 0, sizeof(arg)); + arg.req.op = mm_unlock; + arg.req.mem_type = memType; + + do{ + ret = ioctl(fd, DRM_IOCTL_MM_INIT, &arg); + } while (ret && errno == EAGAIN); + + return ret; +} + + +#endif diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h index d58baa76..86ee7d30 100644 --- a/libdrm/xf86drm.h +++ b/libdrm/xf86drm.h @@ -283,7 +283,6 @@ typedef struct _drmSetVersion { int drm_dd_minor; } drmSetVersion, *drmSetVersionPtr; - #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock) #define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */ @@ -487,6 +486,8 @@ do { register unsigned int __old __asm("o0"); \ } \ } while(0) + + /* General user-level programmer's API: unprivileged */ extern int drmAvailable(void); extern int drmOpen(const char *name, const char *busid); @@ -636,4 +637,6 @@ extern int drmSLLookupNeighbors(void *l, unsigned long key, unsigned long *prev_key, void **prev_value, unsigned long *next_key, void **next_value); +#include "xf86mm.h" + #endif diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h new file mode 100644 index 00000000..da868fe5 --- /dev/null +++ b/libdrm/xf86mm.h @@ -0,0 +1,205 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND. USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +#ifndef _XF86MM_H_ +#define _XF86MM_H_ +#include <stddef.h> +#include "drm.h" + +/* + * Note on multithreaded applications using this interface. + * Libdrm is not threadsafe, so common buffer, TTM, and fence objects need to + * be protected using an external mutex. + * + * Note: Don't protect the following functions, as it may lead to deadlocks: + * drmBOUnmap(), drmFenceBuffers(). + * The kernel is synchronizing and refcounting buffer maps. + * User space only needs to refcount object usage within the same application. + */ + + +/* + * List macros heavily inspired by the Linux kernel + * list handling. No list looping yet. + */ + +typedef struct _drmMMListHead +{ + struct _drmMMListHead *prev; + struct _drmMMListHead *next; +} drmMMListHead; + +#define DRMINITLISTHEAD(__item) \ + do{ \ + (__item)->prev = (__item); \ + (__item)->next = (__item); \ + } while (0) + +#define DRMLISTADD(__item, __list) \ + do { \ + (__item)->prev = (__list); \ + (__item)->next = (__list)->next; \ + (__list)->next->prev = (__item); \ + (__list)->next = (__item); \ + } while (0) + +#define DRMLISTADDTAIL(__item, __list) \ + do { \ + (__item)->next = (__list); \ + (__item)->prev = (__list)->prev; \ + (__list)->prev->next = (__item); \ + (__list)->prev = (__item); \ + } while(0) + +#define DRMLISTDEL(__item) \ + do { \ + (__item)->prev->next = (__item)->next; \ + (__item)->next->prev = (__item)->prev; \ + } while(0) + +#define DRMLISTDELINIT(__item) \ + do { \ + (__item)->prev->next = (__item)->next; \ + (__item)->next->prev = (__item)->prev; \ + (__item)->next = (__item); \ + (__item)->prev = (__item); \ + } while(0) + +#define DRMLISTENTRY(__type, __item, __field) \ + ((__type *)(((char *) (__item)) - offsetof(__type, __field))) + +typedef struct _drmFence{ + unsigned handle; + int class; + unsigned type; + unsigned flags; + unsigned signaled; +} drmFence; + +typedef struct _drmBO{ + drm_bo_type_t type; + unsigned handle; + drm_u64_t mapHandle; + unsigned flags; + unsigned mask; + unsigned mapFlags; + unsigned long size; + unsigned long offset; + unsigned long start; + unsigned replyFlags; + unsigned fenceFlags; + void *virtual; + void *mapVirtual; + int mapCount; +} drmBO; + + +typedef struct _drmBONode { + drmMMListHead head; + drmBO *buf; + drm_bo_arg_t bo_arg; + unsigned long arg0; + unsigned long arg1; +} drmBONode; + +typedef struct _drmBOList { + unsigned numTarget; + unsigned numCurrent; + unsigned numOnList; + drmMMListHead list; + drmMMListHead free; +} drmBOList; + +/* Fencing */ + +extern int drmFenceCreate(int fd, unsigned flags, int class, + unsigned type, + drmFence *fence); +extern int drmFenceDestroy(int fd, const drmFence *fence); +extern int drmFenceReference(int fd, unsigned handle, drmFence *fence); +extern int drmFenceUnreference(int fd, const drmFence *fence); +extern int drmFenceFlush(int fd, drmFence *fence, unsigned flush_type); +extern int drmFenceSignaled(int fd, drmFence *fence, + unsigned fenceType, int *signaled); +extern int drmFenceWait(int fd, unsigned flags, drmFence *fence, + unsigned flush_type); +extern int drmFenceEmit(int fd, unsigned flags, drmFence *fence, + unsigned emit_type); +extern int drmFenceBuffers(int fd, unsigned flags, drmFence *fence); + + +/* + * Buffer object list functions. + */ + +extern void drmBOFreeList(drmBOList *list); +extern int drmBOResetList(drmBOList *list); +extern void *drmBOListIterator(drmBOList *list); +extern void *drmBOListNext(drmBOList *list, void *iterator); +extern drmBO *drmBOListBuf(void *iterator); +extern int drmBOCreateList(int numTarget, drmBOList *list); + +/* + * Buffer object functions. + */ + +extern int drmBOCreate(int fd, void *ttm, unsigned long start, unsigned long size, + void *user_buffer, drm_bo_type_t type, unsigned mask, + unsigned hint, drmBO *buf); +extern int drmBODestroy(int fd, drmBO *buf); +extern int drmBOReference(int fd, unsigned handle, drmBO *buf); +extern int drmBOUnReference(int fd, drmBO *buf); +extern int drmBOMap(int fd, drmBO *buf, unsigned mapFlags, unsigned mapHint, + void **address); +extern int drmBOUnmap(int fd, drmBO *buf); +extern int drmBOValidate(int fd, drmBO *buf, unsigned flags, unsigned mask, + unsigned hint); +extern int drmBOFence(int fd, drmBO *buf, unsigned flags, unsigned fenceHandle); +extern int drmBOInfo(int fd, drmBO *buf); +extern int drmBOBusy(int fd, drmBO *buf, int *busy); + + +extern int drmAddValidateItem(drmBOList *list, drmBO *buf, unsigned flags, + unsigned mask, + int *newItem); +extern int drmBOValidateList(int fd, drmBOList *list); +extern int drmBOFenceList(int fd, drmBOList *list, unsigned fenceHandle); +extern int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint); + +/* + * Initialization functions. + */ + +extern int drmMMInit(int fd, unsigned long pOffset, unsigned long pSize, + unsigned memType); +extern int drmMMTakedown(int fd, unsigned memType); +extern int drmMMLock(int fd, unsigned memType); +extern int drmMMUnlock(int fd, unsigned memType); + + +#endif diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel index 211e5b05..fba57ddf 100644 --- a/linux-core/Makefile.kernel +++ b/linux-core/Makefile.kernel @@ -12,13 +12,15 @@ drm-objs := drm_auth.o drm_bufs.o drm_context.o drm_dma.o drm_drawable.o \ drm_lock.o drm_memory.o drm_proc.o drm_stub.o drm_vm.o \ drm_sysfs.o drm_pci.o drm_agpsupport.o drm_scatter.o \ drm_memory_debug.o ati_pcigart.o drm_sman.o \ - drm_hashtab.o drm_mm.o + drm_hashtab.o drm_mm.o drm_object.o drm_compat.o \ + drm_fence.o drm_ttm.o drm_bo.o tdfx-objs := tdfx_drv.o r128-objs := r128_drv.o r128_cce.o r128_state.o r128_irq.o mga-objs := mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o i810-objs := i810_drv.o i810_dma.o i830-objs := i830_drv.o i830_dma.o i830_irq.o -i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o +i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_fence.o \ + i915_buffer.o radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o r300_cmdbuf.o sis-objs := sis_drv.o sis_mm.o ffb-objs := ffb_drv.o ffb_context.o diff --git a/linux-core/drmP.h b/linux-core/drmP.h index 2bbec70c..17fab2bd 100644 --- a/linux-core/drmP.h +++ b/linux-core/drmP.h @@ -84,6 +84,7 @@ #include <linux/poll.h> #include <asm/pgalloc.h> #include "drm.h" +#include <linux/slab.h> #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE))) #define __OS_HAS_MTRR (defined(CONFIG_MTRR)) @@ -155,9 +156,18 @@ #define DRM_MEM_CTXLIST 21 #define DRM_MEM_MM 22 #define DRM_MEM_HASHTAB 23 +#define DRM_MEM_OBJECTS 24 +#define DRM_MEM_FENCE 25 +#define DRM_MEM_TTM 26 +#define DRM_MEM_BUFOBJ 27 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8) #define DRM_MAP_HASH_OFFSET 0x10000000 +#define DRM_MAP_HASH_ORDER 12 +#define DRM_OBJECT_HASH_ORDER 12 +#define DRM_FILE_PAGE_OFFSET_START ((0xFFFFFFFFUL >> PAGE_SHIFT) + 1) +#define DRM_FILE_PAGE_OFFSET_SIZE ((0xFFFFFFFFUL >> PAGE_SHIFT) * 16) +#define DRM_MM_INIT_MAX_PAGES 256 /*@}*/ @@ -388,6 +398,19 @@ typedef struct drm_buf_entry { drm_freelist_t freelist; } drm_buf_entry_t; +/* + * This should be small enough to allow the use of kmalloc for hash tables + * instead of vmalloc. + */ + +#define DRM_FILE_HASH_ORDER 8 +typedef enum{ + _DRM_REF_USE=0, + _DRM_REF_TYPE1, + _DRM_NO_REF_TYPES +} drm_ref_t; + + /** File private data */ typedef struct drm_file { int authenticated; @@ -402,6 +425,18 @@ typedef struct drm_file { struct drm_head *head; int remove_auth_on_close; unsigned long lock_count; + + /* + * The user object hash table is global and resides in the + * drm_device structure. We protect the lists and hash tables with the + * device struct_mutex. A bit coarse-grained but probably the best + * option. + */ + + struct list_head refd_objects; + struct list_head user_objects; + + drm_open_hash_t refd_object_hash[_DRM_NO_REF_TYPES]; void *driver_priv; } drm_file_t; @@ -503,6 +538,26 @@ typedef struct drm_sigdata { drm_hw_lock_t *lock; } drm_sigdata_t; + +/* + * Generic memory manager structs + */ + +typedef struct drm_mm_node { + struct list_head fl_entry; + struct list_head ml_entry; + int free; + unsigned long start; + unsigned long size; + struct drm_mm *mm; + void *private; +} drm_mm_node_t; + +typedef struct drm_mm { + drm_mm_node_t root_node; +} drm_mm_t; + + /** * Mappings list */ @@ -510,7 +565,8 @@ typedef struct drm_map_list { struct list_head head; /**< list head */ drm_hash_item_t hash; drm_map_t *map; /**< mapping */ - unsigned int user_token; + drm_u64_t user_token; + drm_mm_node_t *file_offset_node; } drm_map_list_t; typedef drm_map_t drm_local_map_t; @@ -543,22 +599,77 @@ typedef struct ati_pcigart_info { drm_local_map_t mapping; } drm_ati_pcigart_info; -/* - * Generic memory manager structs +/* + * User space objects and their references. */ -typedef struct drm_mm_node { - struct list_head fl_entry; - struct list_head ml_entry; - int free; - unsigned long start; - unsigned long size; - void *private; -} drm_mm_node_t; +#define drm_user_object_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) -typedef struct drm_mm { - drm_mm_node_t root_node; -} drm_mm_t; +typedef enum { + drm_fence_type, + drm_buffer_type, + drm_ttm_type + + /* + * Add other user space object types here. + */ + +} drm_object_type_t; + + + + +/* + * A user object is a structure that helps the drm give out user handles + * to kernel internal objects and to keep track of these objects so that + * they can be destroyed, for example when the user space process exits. + * Designed to be accessible using a user space 32-bit handle. + */ + +typedef struct drm_user_object{ + drm_hash_item_t hash; + struct list_head list; + drm_object_type_t type; + atomic_t refcount; + int shareable; + drm_file_t *owner; + void (*ref_struct_locked) (drm_file_t *priv, struct drm_user_object *obj, + drm_ref_t ref_action); + void (*unref)(drm_file_t *priv, struct drm_user_object *obj, + drm_ref_t unref_action); + void (*remove)(drm_file_t *priv, struct drm_user_object *obj); +} drm_user_object_t; + +/* + * A ref object is a structure which is used to + * keep track of references to user objects and to keep track of these + * references so that they can be destroyed for example when the user space + * process exits. Designed to be accessible using a pointer to the _user_ object. + */ + + +typedef struct drm_ref_object { + drm_hash_item_t hash; + struct list_head list; + atomic_t refcount; + drm_ref_t unref_action; +} drm_ref_object_t; + + +#include "drm_ttm.h" + +/* + * buffer object driver + */ + +typedef struct drm_bo_driver{ + int cached[DRM_BO_MEM_TYPES]; + drm_local_map_t *iomap[DRM_BO_MEM_TYPES]; + drm_ttm_backend_t *(*create_ttm_backend_entry) + (struct drm_device *dev); + int (*fence_type)(uint32_t flags, uint32_t *class, uint32_t *type); + int (*invalidate_caches)(struct drm_device *dev, uint32_t flags); +} drm_bo_driver_t; /** @@ -566,6 +677,7 @@ typedef struct drm_mm { * a family of cards. There will one drm_device for each card present * in this family */ + struct drm_device; struct drm_driver { int (*load) (struct drm_device *, unsigned long flags); @@ -612,6 +724,9 @@ struct drm_driver { unsigned long (*get_reg_ofs) (struct drm_device * dev); void (*set_version) (struct drm_device * dev, drm_set_version_t * sv); + struct drm_fence_driver *fence_driver; + struct drm_bo_driver *bo_driver; + int major; int minor; int patchlevel; @@ -641,6 +756,71 @@ typedef struct drm_head { struct class_device *dev_class; } drm_head_t; +typedef struct drm_cache { + + /* + * Memory caches + */ + + kmem_cache_t *mm; + kmem_cache_t *fence_object; +} drm_cache_t; + + + +typedef struct drm_fence_driver{ + int no_types; + uint32_t wrap_diff; + uint32_t flush_diff; + uint32_t sequence_mask; + int lazy_capable; + int (*emit) (struct drm_device *dev, uint32_t flags, + uint32_t *breadcrumb, + uint32_t *native_type); + void (*poke_flush) (struct drm_device *dev); +} drm_fence_driver_t; + +#define _DRM_FENCE_TYPE_EXE 0x00 + +typedef struct drm_fence_manager{ + int initialized; + rwlock_t lock; + + /* + * The list below should be maintained in sequence order and + * access is protected by the above spinlock. + */ + + struct list_head ring; + struct list_head *fence_types[32]; + volatile uint32_t pending_flush; + wait_queue_head_t fence_queue; + int pending_exe_flush; + uint32_t last_exe_flush; + uint32_t exe_flush_sequence; + atomic_t count; +} drm_fence_manager_t; + +typedef struct drm_buffer_manager{ + struct mutex init_mutex; + int nice_mode; + int initialized; + drm_file_t *last_to_validate; + int has_type[DRM_BO_MEM_TYPES]; + int use_type[DRM_BO_MEM_TYPES]; + drm_mm_t manager[DRM_BO_MEM_TYPES]; + struct list_head lru[DRM_BO_MEM_TYPES]; + struct list_head pinned[DRM_BO_MEM_TYPES]; + struct list_head unfenced; + struct list_head ddestroy; + struct work_struct wq; + uint32_t fence_type; + unsigned long cur_pages; + atomic_t count; +} drm_buffer_manager_t; + + + /** * DRM device structure. This structure represent a complete card that * may contain multiple heads. @@ -687,7 +867,11 @@ typedef struct drm_device { /*@{ */ drm_map_list_t *maplist; /**< Linked list of regions */ int map_count; /**< Number of mappable regions */ - drm_open_hash_t map_hash; /**< User token hash table for maps */ + drm_open_hash_t map_hash; /**< User token hash table for maps */ + drm_mm_t offset_manager; /**< User token manager */ + drm_open_hash_t object_hash; /**< User token hash table for objects */ + struct address_space *dev_mapping; /**< For unmap_mapping_range() */ + struct page *ttm_dummy_page; /** \name Context handle management */ /*@{ */ @@ -774,6 +958,9 @@ typedef struct drm_device { unsigned int agp_buffer_token; drm_head_t primary; /**< primary screen head */ + drm_fence_manager_t fm; + drm_buffer_manager_t bm; + /** \name Drawable information */ /*@{ */ spinlock_t drw_lock; @@ -784,6 +971,75 @@ typedef struct drm_device { /*@} */ } drm_device_t; +#if __OS_HAS_AGP +typedef struct drm_agp_ttm_priv { + DRM_AGP_MEM *mem; + struct agp_bridge_data *bridge; + unsigned alloc_type; + unsigned cached_type; + unsigned uncached_type; + int populated; +} drm_agp_ttm_priv; +#endif + +typedef struct drm_fence_object{ + drm_user_object_t base; + atomic_t usage; + + /* + * The below three fields are protected by the fence manager spinlock. + */ + + struct list_head ring; + int class; + uint32_t native_type; + uint32_t type; + uint32_t signaled; + uint32_t sequence; + uint32_t flush_mask; + uint32_t submitted_flush; +} drm_fence_object_t; + + +typedef struct drm_buffer_object{ + drm_device_t *dev; + drm_user_object_t base; + + /* + * If there is a possibility that the usage variable is zero, + * then dev->struct_mutext should be locked before incrementing it. + */ + + atomic_t usage; + drm_ttm_object_t *ttm_object; + drm_ttm_t *ttm; + unsigned long num_pages; + unsigned long buffer_start; + drm_bo_type_t type; + unsigned long offset; + + atomic_t mapped; + uint32_t flags; + uint32_t mask; + + drm_mm_node_t *node_ttm; /* MM node for on-card RAM */ + drm_mm_node_t *node_card; /* MM node for ttm*/ + struct list_head lru_ttm; /* LRU for the ttm pages*/ + struct list_head lru_card; /* For memory types with on-card RAM */ + struct list_head ddestroy; + + uint32_t fence_type; + uint32_t fence_class; + drm_fence_object_t *fence; + uint32_t priv_flags; + wait_queue_head_t event_queue; + struct mutex mutex; +} drm_buffer_object_t; + +#define _DRM_BO_FLAG_UNFENCED 0x00000001 +#define _DRM_BO_FLAG_EVICTED 0x00000002 + + static __inline__ int drm_core_check_feature(struct drm_device *dev, int feature) { @@ -841,6 +1097,7 @@ static inline int drm_mtrr_del(int handle, unsigned long offset, #define drm_core_has_MTRR(dev) (0) #endif + /******************************************************************/ /** \name Internal function definitions */ /*@{*/ @@ -869,6 +1126,7 @@ unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); extern int drm_mmap(struct file *filp, struct vm_area_struct *vma); extern unsigned long drm_core_get_map_ofs(drm_map_t * map); extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev); +extern pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma); /* Memory management support (drm_memory.h) */ #include "drm_memory.h" @@ -884,6 +1142,14 @@ extern int drm_free_agp(DRM_AGP_MEM * handle, int pages); extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start); extern int drm_unbind_agp(DRM_AGP_MEM * handle); +extern void drm_free_memctl(size_t size); +extern int drm_alloc_memctl(size_t size); +extern void drm_query_memctl(drm_u64_t *cur_used, + drm_u64_t *low_threshold, + drm_u64_t *high_threshold); +extern void drm_init_memctl(size_t low_threshold, + size_t high_threshold); + /* Misc. IOCTL support (drm_ioctl.h) */ extern int drm_irq_by_busid(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); @@ -951,6 +1217,13 @@ extern int drm_unlock(struct inode *inode, struct file *filp, extern int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context); extern int drm_lock_free(drm_device_t * dev, __volatile__ unsigned int *lock, unsigned int context); +/* + * These are exported to drivers so that they can implement fencing using + * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. + */ + +extern int drm_i_have_hw_lock(struct file *filp); +extern int drm_kernel_take_hw_lock(struct file *filp); /* Buffer management support (drm_bufs.h) */ extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request); @@ -1036,7 +1309,8 @@ extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size extern int drm_agp_free_memory(DRM_AGP_MEM * handle); extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start); extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle); - +extern drm_ttm_backend_t *drm_agp_init_ttm(struct drm_device *dev, + drm_ttm_backend_t *backend); /* Stub support (drm_stub.h) */ extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver); @@ -1045,6 +1319,7 @@ extern int drm_put_head(drm_head_t * head); extern unsigned int drm_debug; /* 1 to enable debug output */ extern unsigned int drm_cards_limit; extern drm_head_t **drm_heads; +extern drm_cache_t drm_cache; extern struct drm_sysfs_class *drm_class; extern struct proc_dir_entry *drm_proc_root; @@ -1088,11 +1363,117 @@ extern void drm_sysfs_device_remove(struct class_device *class_dev); extern drm_mm_node_t * drm_mm_get_block(drm_mm_node_t * parent, unsigned long size, unsigned alignment); -extern void drm_mm_put_block(drm_mm_t *mm, drm_mm_node_t *cur); +extern void drm_mm_put_block(drm_mm_node_t *cur); extern drm_mm_node_t *drm_mm_search_free(const drm_mm_t *mm, unsigned long size, unsigned alignment, int best_match); extern int drm_mm_init(drm_mm_t *mm, unsigned long start, unsigned long size); extern void drm_mm_takedown(drm_mm_t *mm); +extern int drm_mm_clean(drm_mm_t *mm); +static inline drm_mm_t *drm_get_mm(drm_mm_node_t *block) +{ + return block->mm; +} + + +/* + * User space object bookkeeping (drm_object.c) + */ + +/* + * Must be called with the struct_mutex held. + */ + +extern int drm_add_user_object(drm_file_t *priv, drm_user_object_t *item, + +/* + * Must be called with the struct_mutex held. + */ + int shareable); +extern drm_user_object_t *drm_lookup_user_object(drm_file_t *priv, uint32_t key); + +/* + * Must be called with the struct_mutex held. + * If "item" has been obtained by a call to drm_lookup_user_object. You may not + * release the struct_mutex before calling drm_remove_ref_object. + * This function may temporarily release the struct_mutex. + */ + +extern int drm_remove_user_object(drm_file_t *priv, drm_user_object_t *item); + +/* + * Must be called with the struct_mutex held. May temporarily release it. + */ + +extern int drm_add_ref_object(drm_file_t *priv, drm_user_object_t *referenced_object, + drm_ref_t ref_action); + +/* + * Must be called with the struct_mutex held. + */ + +drm_ref_object_t *drm_lookup_ref_object(drm_file_t *priv, + drm_user_object_t *referenced_object, + drm_ref_t ref_action); +/* + * Must be called with the struct_mutex held. + * If "item" has been obtained by a call to drm_lookup_ref_object. You may not + * release the struct_mutex before calling drm_remove_ref_object. + * This function may temporarily release the struct_mutex. + */ + +extern void drm_remove_ref_object(drm_file_t *priv, drm_ref_object_t *item); +extern int drm_user_object_ref(drm_file_t *priv, uint32_t user_token, drm_object_type_t type, + drm_user_object_t **object); +extern int drm_user_object_unref(drm_file_t *priv, uint32_t user_token, drm_object_type_t type); + + + +/* + * fence objects (drm_fence.c) + */ + +extern void drm_fence_handler(drm_device_t *dev, uint32_t breadcrumb, uint32_t type); +extern void drm_fence_manager_init(drm_device_t *dev); +extern void drm_fence_manager_takedown(drm_device_t *dev); +extern void drm_fence_flush_old(drm_device_t *dev, uint32_t sequence); +extern int drm_fence_object_flush(drm_device_t * dev, + volatile drm_fence_object_t * fence, + uint32_t type); +extern int drm_fence_object_signaled(volatile drm_fence_object_t * fence, + uint32_t type); +extern void drm_fence_usage_deref_locked(drm_device_t * dev, + drm_fence_object_t * fence); +extern void drm_fence_usage_deref_unlocked(drm_device_t * dev, + drm_fence_object_t * fence); +extern int drm_fence_object_wait(drm_device_t * dev, + volatile drm_fence_object_t * fence, + int lazy, int ignore_signals, uint32_t mask); +extern int drm_fence_object_create(drm_device_t *dev, uint32_t type, + uint32_t fence_flags, + drm_fence_object_t **c_fence); +extern int drm_fence_add_user_object(drm_file_t *priv, + drm_fence_object_t *fence, + int shareable); + + + + + +extern int drm_fence_ioctl(DRM_IOCTL_ARGS); + +/* + * buffer objects (drm_bo.c) + */ + +extern int drm_bo_ioctl(DRM_IOCTL_ARGS); +extern int drm_mm_init_ioctl(DRM_IOCTL_ARGS); +extern int drm_bo_driver_finish(drm_device_t *dev); +extern int drm_bo_driver_init(drm_device_t *dev); +extern int drm_fence_buffer_objects(drm_file_t * priv, + struct list_head *list, + uint32_t fence_flags, + drm_fence_object_t *fence, + drm_fence_object_t **used_fence); /* Inline replacements for DRM_IOREMAP macros */ @@ -1164,6 +1545,58 @@ extern void *drm_alloc(size_t size, int area); extern void drm_free(void *pt, size_t size, int area); #endif +/* + * Accounting variants of standard calls. + */ + +static inline void *drm_ctl_alloc(size_t size, int area) +{ + void *ret; + if (drm_alloc_memctl(size)) + return NULL; + ret = drm_alloc(size, area); + if (!ret) + drm_free_memctl(size); + return ret; +} + +static inline void *drm_ctl_calloc(size_t nmemb, size_t size, int area) +{ + void *ret; + + if (drm_alloc_memctl(nmemb*size)) + return NULL; + ret = drm_calloc(nmemb, size, area); + if (!ret) + drm_free_memctl(nmemb*size); + return ret; +} + +static inline void drm_ctl_free(void *pt, size_t size, int area) +{ + drm_free(pt, size, area); + drm_free_memctl(size); +} + +static inline void *drm_ctl_cache_alloc(kmem_cache_t *cache, size_t size, + int flags) +{ + void *ret; + if (drm_alloc_memctl(size)) + return NULL; + ret = kmem_cache_alloc(cache, flags); + if (!ret) + drm_free_memctl(size); + return ret; +} + +static inline void drm_ctl_cache_free(kmem_cache_t *cache, size_t size, + void *obj) +{ + kmem_cache_free(cache, obj); + drm_free_memctl(size); +} + /*@}*/ #endif /* __KERNEL__ */ diff --git a/linux-core/drm_agpsupport.c b/linux-core/drm_agpsupport.c index dce27cdf..a5f1f9ee 100644 --- a/linux-core/drm_agpsupport.c +++ b/linux-core/drm_agpsupport.c @@ -552,4 +552,162 @@ int drm_agp_unbind_memory(DRM_AGP_MEM * handle) return agp_unbind_memory(handle); } + + +/* + * AGP ttm backend interface. + */ + +#ifndef AGP_USER_TYPES +#define AGP_USER_TYPES (1 << 16) +#define AGP_USER_MEMORY (AGP_USER_TYPES) +#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) +#endif + +static int drm_agp_needs_unbind_cache_adjust(drm_ttm_backend_t *backend) { + return ((backend->flags & DRM_BE_FLAG_BOUND_CACHED) ? 0 : 1); +} + + +static int drm_agp_populate(drm_ttm_backend_t *backend, unsigned long num_pages, + struct page **pages) { + + drm_agp_ttm_priv *agp_priv = (drm_agp_ttm_priv *) backend->private; + struct page **cur_page, **last_page = pages + num_pages; + DRM_AGP_MEM *mem; + + if (drm_alloc_memctl(num_pages * sizeof(void *))) + return -1; + + DRM_DEBUG("drm_agp_populate_ttm\n"); +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) + mem = drm_agp_allocate_memory(num_pages, agp_priv->alloc_type); +#else + mem = drm_agp_allocate_memory(agp_priv->bridge, num_pages, agp_priv->alloc_type); +#endif + if (!mem) { + drm_free_memctl(num_pages *sizeof(void *)); + return -1; + } + + DRM_DEBUG("Current page count is %ld\n", (long) mem->page_count); + mem->page_count = 0; + for (cur_page = pages; cur_page < last_page; ++cur_page) { + mem->memory[mem->page_count++] = phys_to_gart(page_to_phys(*cur_page)); + } + agp_priv->mem = mem; + return 0; +} + +static int drm_agp_bind_ttm(drm_ttm_backend_t *backend, + unsigned long offset, + int cached) +{ + drm_agp_ttm_priv *agp_priv = (drm_agp_ttm_priv *) backend->private; + DRM_AGP_MEM *mem = agp_priv->mem; + int ret; + + DRM_DEBUG("drm_agp_bind_ttm\n"); + DRM_MASK_VAL(backend->flags, DRM_BE_FLAG_BOUND_CACHED, + (cached) ? DRM_BE_FLAG_BOUND_CACHED : 0); + mem->is_flushed = TRUE; + mem->type = (cached) ? agp_priv->cached_type : agp_priv->uncached_type; + ret = drm_agp_bind_memory(mem, offset); + if (ret) { + DRM_ERROR("AGP Bind memory failed\n"); + } + return ret; +} + +static int drm_agp_unbind_ttm(drm_ttm_backend_t *backend) { + + drm_agp_ttm_priv *agp_priv = (drm_agp_ttm_priv *) backend->private; + + DRM_DEBUG("drm_agp_unbind_ttm\n"); + if (agp_priv->mem->is_bound) + return drm_agp_unbind_memory(agp_priv->mem); + else + return 0; +} + +static void drm_agp_clear_ttm(drm_ttm_backend_t *backend) { + + drm_agp_ttm_priv *agp_priv = (drm_agp_ttm_priv *) backend->private; + DRM_AGP_MEM *mem = agp_priv->mem; + + DRM_DEBUG("drm_agp_clear_ttm\n"); + if (mem) { + unsigned long num_pages = mem->page_count; + backend->unbind(backend); + agp_free_memory(mem); + drm_free_memctl(num_pages *sizeof(void *)); + } + + agp_priv->mem = NULL; +} + +static void drm_agp_destroy_ttm(drm_ttm_backend_t *backend) { + + drm_agp_ttm_priv *agp_priv; + + if (backend) { + DRM_DEBUG("drm_agp_destroy_ttm\n"); + agp_priv = (drm_agp_ttm_priv *) backend->private; + if (agp_priv) { + if (agp_priv->mem) { + backend->clear(backend); + } + drm_ctl_free(agp_priv, sizeof(*agp_priv), DRM_MEM_MAPPINGS); + backend->private = NULL; + } + if (backend->flags & DRM_BE_FLAG_NEEDS_FREE) { + drm_ctl_free(backend, sizeof(*backend), DRM_MEM_MAPPINGS); + } + } +} + + +drm_ttm_backend_t *drm_agp_init_ttm(struct drm_device *dev, + drm_ttm_backend_t *backend) +{ + + drm_ttm_backend_t *agp_be; + drm_agp_ttm_priv *agp_priv; + + agp_be = (backend != NULL) ? backend: + drm_ctl_calloc(1, sizeof(*agp_be), DRM_MEM_MAPPINGS); + + if (!agp_be) + return NULL; + + agp_priv = drm_ctl_calloc(1, sizeof(*agp_priv), DRM_MEM_MAPPINGS); + + if (!agp_priv) { + drm_ctl_free(agp_be, sizeof(*agp_be), DRM_MEM_MAPPINGS); + return NULL; + } + + agp_priv->mem = NULL; + agp_priv->alloc_type = AGP_USER_MEMORY; + agp_priv->cached_type = AGP_USER_CACHED_MEMORY; + agp_priv->uncached_type = AGP_USER_MEMORY; + agp_priv->bridge = dev->agp->bridge; + agp_priv->populated = FALSE; + agp_be->aperture_base = dev->agp->agp_info.aper_base; + agp_be->private = (void *) agp_priv; + agp_be->needs_ub_cache_adjust = drm_agp_needs_unbind_cache_adjust; + agp_be->populate = drm_agp_populate; + agp_be->clear = drm_agp_clear_ttm; + agp_be->bind = drm_agp_bind_ttm; + agp_be->unbind = drm_agp_unbind_ttm; + agp_be->destroy = drm_agp_destroy_ttm; + DRM_MASK_VAL(agp_be->flags, DRM_BE_FLAG_NEEDS_FREE, + (backend == NULL) ? DRM_BE_FLAG_NEEDS_FREE : 0); + DRM_MASK_VAL(agp_be->flags, DRM_BE_FLAG_CBA, + (dev->agp->cant_use_aperture) ? DRM_BE_FLAG_CBA : 0); + agp_be->drm_map_type = _DRM_AGP; + return agp_be; +} +EXPORT_SYMBOL(drm_agp_init_ttm); + #endif /* __OS_HAS_AGP */ diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c new file mode 100644 index 00000000..b8ee6c15 --- /dev/null +++ b/linux-core/drm_bo.c @@ -0,0 +1,1968 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" + +/* + * Buffer object locking policy: + * Lock dev->struct_mutex; + * Increase usage + * Unlock dev->struct_mutex; + * Lock buffer->mutex; + * Do whatever you want; + * Unlock buffer->mutex; + * Decrease usage. Call destruction if zero. + * + * User object visibility ups usage just once, since it has its own + * refcounting. + * + * Destruction: + * lock dev->struct_mutex; + * Verify that usage is zero. Otherwise unlock and continue. + * Destroy object. + * unlock dev->struct_mutex; + * + * Mutex and spinlock locking orders: + * 1.) Buffer mutex + * 2.) Refer to ttm locking orders. + */ + +#define DRM_FLAG_MASKED(_old, _new, _mask) {\ +(_old) ^= (((_old) ^ (_new)) & (_mask)); \ +} + +static inline uint32_t drm_bo_type_flags(unsigned type) +{ + return (1 << (24 + type)); +} + +static inline drm_buffer_object_t *drm_bo_entry(struct list_head *list, + unsigned type) +{ + switch (type) { + case DRM_BO_MEM_LOCAL: + case DRM_BO_MEM_TT: + return list_entry(list, drm_buffer_object_t, lru_ttm); + case DRM_BO_MEM_VRAM: + case DRM_BO_MEM_VRAM_NM: + return list_entry(list, drm_buffer_object_t, lru_card); + default: + BUG_ON(1); + } + return NULL; +} + +static inline drm_mm_node_t *drm_bo_mm_node(drm_buffer_object_t * bo, + unsigned type) +{ + switch (type) { + case DRM_BO_MEM_LOCAL: + case DRM_BO_MEM_TT: + return bo->node_ttm; + case DRM_BO_MEM_VRAM: + case DRM_BO_MEM_VRAM_NM: + return bo->node_card; + default: + BUG_ON(1); + } + return NULL; +} + +/* + * bo locked. dev->struct_mutex locked. + */ + +static void drm_bo_add_to_lru(drm_buffer_object_t * buf, + drm_buffer_manager_t * bm) +{ + struct list_head *list; + unsigned mem_type; + + if (buf->flags & DRM_BO_FLAG_MEM_TT) { + mem_type = DRM_BO_MEM_TT; + list = + (buf-> + flags & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) ? + &bm->pinned[mem_type] : &bm->lru[mem_type]; + list_add_tail(&buf->lru_ttm, list); + } else { + mem_type = DRM_BO_MEM_LOCAL; + list = + (buf-> + flags & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) ? + &bm->pinned[mem_type] : &bm->lru[mem_type]; + list_add_tail(&buf->lru_ttm, list); + } + if (buf->flags & DRM_BO_FLAG_MEM_VRAM) { + mem_type = DRM_BO_MEM_VRAM; + list = + (buf-> + flags & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) ? + &bm->pinned[mem_type] : &bm->lru[mem_type]; + list_add_tail(&buf->lru_card, list); + } +} + +/* + * bo locked. + */ + +static int drm_move_tt_to_local(drm_buffer_object_t * buf, int evict, + int force_no_move) +{ + drm_device_t *dev = buf->dev; + int ret; + + if (buf->node_ttm) { + mutex_lock(&dev->struct_mutex); + if (evict) + ret = drm_evict_ttm(buf->ttm); + else + ret = drm_unbind_ttm(buf->ttm); + + if (ret) { + mutex_unlock(&dev->struct_mutex); + if (ret == -EAGAIN) + schedule(); + return ret; + } + + if (!(buf->flags & DRM_BO_FLAG_NO_MOVE) || force_no_move) { + drm_mm_put_block(buf->node_ttm); + buf->node_ttm = NULL; + } + mutex_unlock(&dev->struct_mutex); + } + + buf->flags &= ~DRM_BO_FLAG_MEM_TT; + buf->flags |= DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_CACHED; + + return 0; +} + +/* + * Lock dev->struct_mutex + */ + +static void drm_bo_destroy_locked(drm_device_t * dev, drm_buffer_object_t * bo) +{ + + drm_buffer_manager_t *bm = &dev->bm; + + DRM_FLAG_MASKED(bo->priv_flags, 0, _DRM_BO_FLAG_UNFENCED); + + /* + * Somone might try to access us through the still active BM lists. + */ + + if (atomic_read(&bo->usage) != 0) + return; + if (!list_empty(&bo->ddestroy)) + return; + + if (bo->fence) { + if (!drm_fence_object_signaled(bo->fence, bo->fence_type)) { + + drm_fence_object_flush(dev, bo->fence, bo->fence_type); + list_add_tail(&bo->ddestroy, &bm->ddestroy); + schedule_delayed_work(&bm->wq, + ((DRM_HZ / 100) < + 1) ? 1 : DRM_HZ / 100); + return; + } else { + drm_fence_usage_deref_locked(dev, bo->fence); + bo->fence = NULL; + } + } + /* + * Take away from lru lists. + */ + + list_del_init(&bo->lru_ttm); + list_del_init(&bo->lru_card); + + if (bo->ttm) { + unsigned long _end = jiffies + DRM_HZ; + int ret; + + /* + * This temporarily unlocks struct_mutex. + */ + + do { + ret = drm_unbind_ttm(bo->ttm); + if (ret == -EAGAIN) { + mutex_unlock(&dev->struct_mutex); + schedule(); + mutex_lock(&dev->struct_mutex); + } + } while (ret == -EAGAIN && !time_after_eq(jiffies, _end)); + + if (ret) { + DRM_ERROR("Couldn't unbind buffer. " + "Bad. Continuing anyway\n"); + } + } + + if (bo->node_ttm) { + drm_mm_put_block(bo->node_ttm); + bo->node_ttm = NULL; + } + if (bo->node_card) { + drm_mm_put_block(bo->node_card); + bo->node_card = NULL; + } + if (bo->ttm_object) { + drm_ttm_object_deref_locked(dev, bo->ttm_object); + } + atomic_dec(&bm->count); + drm_ctl_free(bo, sizeof(*bo), DRM_MEM_BUFOBJ); +} + +static void drm_bo_delayed_delete(drm_device_t * dev) +{ + drm_buffer_manager_t *bm = &dev->bm; + + drm_buffer_object_t *entry, *nentry; + struct list_head *list, *next; + drm_fence_object_t *fence; + + mutex_lock(&dev->struct_mutex); + if (!bm->initialized) + goto out; + + list = bm->ddestroy.next; + list_for_each_safe(list, next, &bm->ddestroy) { + entry = list_entry(list, drm_buffer_object_t, ddestroy); + nentry = NULL; + + /* + * Another process may claim access to this entry through the + * lru lists. In that case, just skip it. + */ + + if (atomic_read(&entry->usage) != 0) + continue; + + /* + * Since we're the only users, No need to take the + * bo->mutex to watch the fence. + */ + + fence = entry->fence; + if (fence && drm_fence_object_signaled(fence, + entry->fence_type)) { + drm_fence_usage_deref_locked(dev, fence); + entry->fence = NULL; + } + + if (!entry->fence) { + + /* + * Protect the "next" entry against destruction in case + * drm_bo_destroy_locked temporarily releases the + * struct_mutex; + */ + + nentry = NULL; + if (next != &bm->ddestroy) { + nentry = list_entry(next, drm_buffer_object_t, + ddestroy); + atomic_inc(&nentry->usage); + } + DRM_DEBUG("Destroying delayed buffer object\n"); + list_del_init(&entry->ddestroy); + drm_bo_destroy_locked(dev, entry); + if (next != &bm->ddestroy) + atomic_dec(&nentry->usage); + } + } + out: + mutex_unlock(&dev->struct_mutex); +} + +static void drm_bo_delayed_workqueue(void *data) +{ + drm_device_t *dev = (drm_device_t *) data; + drm_buffer_manager_t *bm = &dev->bm; + + DRM_DEBUG("Delayed delete Worker\n"); + + drm_bo_delayed_delete(dev); + mutex_lock(&dev->struct_mutex); + if (bm->initialized && !list_empty(&bm->ddestroy)) { + schedule_delayed_work(&bm->wq, + ((DRM_HZ / 100) < 1) ? 1 : DRM_HZ / 100); + } + mutex_unlock(&dev->struct_mutex); +} + +void drm_bo_usage_deref_locked(drm_device_t * dev, drm_buffer_object_t * bo) +{ + if (atomic_dec_and_test(&bo->usage)) { + drm_bo_destroy_locked(dev, bo); + } +} + +static void drm_bo_base_deref_locked(drm_file_t * priv, drm_user_object_t * uo) +{ + drm_bo_usage_deref_locked(priv->head->dev, + drm_user_object_entry(uo, drm_buffer_object_t, + base)); +} + +void drm_bo_usage_deref_unlocked(drm_device_t * dev, drm_buffer_object_t * bo) +{ + if (atomic_dec_and_test(&bo->usage)) { + mutex_lock(&dev->struct_mutex); + if (atomic_read(&bo->usage) == 0) + drm_bo_destroy_locked(dev, bo); + mutex_unlock(&dev->struct_mutex); + } +} + +/* + * Note. The caller has to register (if applicable) + * and deregister fence object usage. + */ + +int drm_fence_buffer_objects(drm_file_t * priv, + struct list_head *list, + uint32_t fence_flags, + drm_fence_object_t * fence, + drm_fence_object_t ** used_fence) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_manager_t *bm = &dev->bm; + + drm_buffer_object_t *entry; + uint32_t fence_type = 0; + int count = 0; + int ret = 0; + struct list_head f_list, *l; + + mutex_lock(&dev->struct_mutex); + + if (!list) + list = &bm->unfenced; + + list_for_each_entry(entry, list, lru_ttm) { + BUG_ON(!(entry->priv_flags & _DRM_BO_FLAG_UNFENCED)); + fence_type |= entry->fence_type; + if (entry->fence_class != 0) { + DRM_ERROR("Fence class %d is not implemented yet.\n", + entry->fence_class); + ret = -EINVAL; + goto out; + } + count++; + } + + if (!count) { + ret = -EINVAL; + goto out; + } + + /* + * Transfer to a local list before we release the dev->struct_mutex; + * This is so we don't get any new unfenced objects while fencing + * the ones we already have.. + */ + + list_add_tail(&f_list, list); + list_del_init(list); + + if (fence) { + if ((fence_type & fence->type) != fence_type) { + DRM_ERROR("Given fence doesn't match buffers " + "on unfenced list.\n"); + ret = -EINVAL; + goto out; + } + } else { + mutex_unlock(&dev->struct_mutex); + ret = drm_fence_object_create(dev, fence_type, + fence_flags | DRM_FENCE_FLAG_EMIT, + &fence); + mutex_lock(&dev->struct_mutex); + if (ret) + goto out; + } + + count = 0; + l = f_list.next; + while (l != &f_list) { + entry = list_entry(l, drm_buffer_object_t, lru_ttm); + atomic_inc(&entry->usage); + mutex_unlock(&dev->struct_mutex); + mutex_lock(&entry->mutex); + mutex_lock(&dev->struct_mutex); + list_del_init(l); + list_del_init(&entry->lru_card); + if (entry->priv_flags & _DRM_BO_FLAG_UNFENCED) { + count++; + if (entry->fence) + drm_fence_usage_deref_locked(dev, entry->fence); + entry->fence = fence; + DRM_FLAG_MASKED(entry->priv_flags, 0, + _DRM_BO_FLAG_UNFENCED); + DRM_WAKEUP(&entry->event_queue); + drm_bo_add_to_lru(entry, bm); + } + mutex_unlock(&entry->mutex); + drm_bo_usage_deref_locked(dev, entry); + l = f_list.next; + } + atomic_add(count, &fence->usage); + DRM_DEBUG("Fenced %d buffers\n", count); + out: + mutex_unlock(&dev->struct_mutex); + *used_fence = fence; + return ret; +} + +EXPORT_SYMBOL(drm_fence_buffer_objects); + +/* + * Call bo->mutex locked. + * Wait until the buffer is idle. + */ + +static int drm_bo_wait(drm_buffer_object_t * bo, int lazy, int ignore_signals, + int no_wait) +{ + + drm_fence_object_t *fence = bo->fence; + int ret; + + if (fence) { + drm_device_t *dev = bo->dev; + if (drm_fence_object_signaled(fence, bo->fence_type)) { + drm_fence_usage_deref_unlocked(dev, fence); + bo->fence = NULL; + return 0; + } + if (no_wait) { + return -EBUSY; + } + ret = + drm_fence_object_wait(dev, fence, lazy, ignore_signals, + bo->fence_type); + if (ret) + return ret; + + drm_fence_usage_deref_unlocked(dev, fence); + bo->fence = NULL; + + } + return 0; +} + +/* + * bo->mutex locked + */ + +static int drm_bo_evict(drm_buffer_object_t * bo, unsigned mem_type, + int no_wait, int force_no_move) +{ + int ret = 0; + drm_device_t *dev = bo->dev; + drm_buffer_manager_t *bm = &dev->bm; + + /* + * Someone might have modified the buffer before we took the buffer mutex. + */ + + if (bo->priv_flags & _DRM_BO_FLAG_UNFENCED) + goto out; + if (!(bo->flags & drm_bo_type_flags(mem_type))) + goto out; + + ret = drm_bo_wait(bo, 0, 0, no_wait); + + if (ret) { + if (ret != -EAGAIN) + DRM_ERROR("Failed to expire fence before " + "buffer eviction.\n"); + goto out; + } + + if (mem_type == DRM_BO_MEM_TT) { + ret = drm_move_tt_to_local(bo, 1, force_no_move); + if (ret) + goto out; + mutex_lock(&dev->struct_mutex); + list_del_init(&bo->lru_ttm); + drm_bo_add_to_lru(bo, bm); + mutex_unlock(&dev->struct_mutex); + } +#if 0 + else { + ret = drm_move_vram_to_local(bo); + mutex_lock(&dev->struct_mutex); + list_del_init(&bo->lru_card); + mutex_unlock(&dev->struct_mutex); + } +#endif + if (ret) + goto out; + + DRM_FLAG_MASKED(bo->priv_flags, _DRM_BO_FLAG_EVICTED, + _DRM_BO_FLAG_EVICTED); + out: + return ret; +} + +/* + * buf->mutex locked. + */ + +int drm_bo_alloc_space(drm_buffer_object_t * buf, unsigned mem_type, + int no_wait) +{ + drm_device_t *dev = buf->dev; + drm_mm_node_t *node; + drm_buffer_manager_t *bm = &dev->bm; + drm_buffer_object_t *bo; + drm_mm_t *mm = &bm->manager[mem_type]; + struct list_head *lru; + unsigned long size = buf->num_pages; + int ret; + + mutex_lock(&dev->struct_mutex); + do { + node = drm_mm_search_free(mm, size, 0, 1); + if (node) + break; + + lru = &bm->lru[mem_type]; + if (lru->next == lru) + break; + + bo = drm_bo_entry(lru->next, mem_type); + + atomic_inc(&bo->usage); + mutex_unlock(&dev->struct_mutex); + mutex_lock(&bo->mutex); + BUG_ON(bo->flags & DRM_BO_FLAG_NO_MOVE); + ret = drm_bo_evict(bo, mem_type, no_wait, 0); + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(dev, bo); + if (ret) + return ret; + mutex_lock(&dev->struct_mutex); + } while (1); + + if (!node) { + DRM_ERROR("Out of videoram / aperture space\n"); + mutex_unlock(&dev->struct_mutex); + return -ENOMEM; + } + + node = drm_mm_get_block(node, size, 0); + mutex_unlock(&dev->struct_mutex); + BUG_ON(!node); + node->private = (void *)buf; + + if (mem_type == DRM_BO_MEM_TT) { + buf->node_ttm = node; + } else { + buf->node_card = node; + } + buf->offset = node->start * PAGE_SIZE; + return 0; +} + +static int drm_move_local_to_tt(drm_buffer_object_t * bo, int no_wait) +{ + drm_device_t *dev = bo->dev; + drm_ttm_backend_t *be; + int ret; + + if (!(bo->node_ttm && (bo->flags & DRM_BO_FLAG_NO_MOVE))) { + BUG_ON(bo->node_ttm); + ret = drm_bo_alloc_space(bo, DRM_BO_MEM_TT, no_wait); + if (ret) + return ret; + } + + DRM_DEBUG("Flipping in to AGP 0x%08lx\n", bo->node_ttm->start); + + mutex_lock(&dev->struct_mutex); + ret = drm_bind_ttm(bo->ttm, bo->flags & DRM_BO_FLAG_BIND_CACHED, + bo->node_ttm->start); + if (ret) { + drm_mm_put_block(bo->node_ttm); + bo->node_ttm = NULL; + } + mutex_unlock(&dev->struct_mutex); + + if (ret) { + return ret; + } + + be = bo->ttm->be; + if (be->needs_ub_cache_adjust(be)) + bo->flags &= ~DRM_BO_FLAG_CACHED; + bo->flags &= ~DRM_BO_MASK_MEM; + bo->flags |= DRM_BO_FLAG_MEM_TT; + + if (bo->priv_flags & _DRM_BO_FLAG_EVICTED) { + ret = dev->driver->bo_driver->invalidate_caches(dev, bo->flags); + if (ret) + DRM_ERROR("Could not flush read caches\n"); + } + DRM_FLAG_MASKED(bo->priv_flags, 0, _DRM_BO_FLAG_EVICTED); + + return 0; +} + +static int drm_bo_new_flags(drm_device_t * dev, + uint32_t flags, uint32_t new_mask, uint32_t hint, + int init, uint32_t * n_flags, uint32_t * n_mask) +{ + uint32_t new_flags = 0; + uint32_t new_props; + drm_bo_driver_t *driver = dev->driver->bo_driver; + drm_buffer_manager_t *bm = &dev->bm; + unsigned i; + + /* + * First adjust the mask to take away nonexistant memory types. + */ + + for (i = 0; i < DRM_BO_MEM_TYPES; ++i) { + if (!bm->use_type[i]) + new_mask &= ~drm_bo_type_flags(i); + } + + if ((new_mask & DRM_BO_FLAG_NO_EVICT) && !DRM_SUSER(DRM_CURPROC)) { + DRM_ERROR + ("DRM_BO_FLAG_NO_EVICT is only available to priviliged " + "processes\n"); + return -EPERM; + } + if (new_mask & DRM_BO_FLAG_BIND_CACHED) { + if (((new_mask & DRM_BO_FLAG_MEM_TT) && + !driver->cached[DRM_BO_MEM_TT]) && + ((new_mask & DRM_BO_FLAG_MEM_VRAM) + && !driver->cached[DRM_BO_MEM_VRAM])) { + new_mask &= ~DRM_BO_FLAG_BIND_CACHED; + } else { + if (!driver->cached[DRM_BO_MEM_TT]) + new_flags &= DRM_BO_FLAG_MEM_TT; + if (!driver->cached[DRM_BO_MEM_VRAM]) + new_flags &= DRM_BO_FLAG_MEM_VRAM; + } + } + + if ((new_mask & DRM_BO_FLAG_READ_CACHED) && + !(new_mask & DRM_BO_FLAG_BIND_CACHED)) { + if ((new_mask & DRM_BO_FLAG_NO_EVICT) && + !(new_mask & DRM_BO_FLAG_MEM_LOCAL)) { + DRM_ERROR + ("Cannot read cached from a pinned VRAM / TT buffer\n"); + return -EINVAL; + } + } + + /* + * Determine new memory location: + */ + + if (!(flags & new_mask & DRM_BO_MASK_MEM) || init) { + + new_flags = new_mask & DRM_BO_MASK_MEM; + + if (!new_flags) { + DRM_ERROR("Invalid buffer object memory flags\n"); + return -EINVAL; + } + + if (new_flags & DRM_BO_FLAG_MEM_LOCAL) { + if ((hint & DRM_BO_HINT_AVOID_LOCAL) && + new_flags & (DRM_BO_FLAG_MEM_VRAM | + DRM_BO_FLAG_MEM_TT)) { + new_flags &= ~DRM_BO_FLAG_MEM_LOCAL; + } else { + new_flags = DRM_BO_FLAG_MEM_LOCAL; + } + } + if (new_flags & DRM_BO_FLAG_MEM_TT) { + if ((new_mask & DRM_BO_FLAG_PREFER_VRAM) && + new_flags & DRM_BO_FLAG_MEM_VRAM) { + new_flags = DRM_BO_FLAG_MEM_VRAM; + } else { + new_flags = DRM_BO_FLAG_MEM_TT; + } + } + } else { + new_flags = flags & DRM_BO_MASK_MEM; + } + + new_props = new_mask & (DRM_BO_FLAG_EXE | DRM_BO_FLAG_WRITE | + DRM_BO_FLAG_READ); + + if (!new_props) { + DRM_ERROR("Invalid buffer object rwx properties\n"); + return -EINVAL; + } + + new_flags |= new_mask & ~DRM_BO_MASK_MEM; + + if (((flags ^ new_flags) & DRM_BO_FLAG_BIND_CACHED) && + (new_flags & DRM_BO_FLAG_NO_EVICT) && + (flags & (DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_MEM_VRAM))) { + if (!(flags & DRM_BO_FLAG_CACHED)) { + DRM_ERROR + ("Cannot change caching policy of pinned buffer\n"); + return -EINVAL; + } else { + new_flags &= ~DRM_BO_FLAG_CACHED; + } + } + + *n_flags = new_flags; + *n_mask = new_mask; + return 0; +} + +/* + * Call dev->struct_mutex locked. + */ + +drm_buffer_object_t *drm_lookup_buffer_object(drm_file_t * priv, + uint32_t handle, int check_owner) +{ + drm_user_object_t *uo; + drm_buffer_object_t *bo; + + uo = drm_lookup_user_object(priv, handle); + + if (!uo || (uo->type != drm_buffer_type)) { + DRM_ERROR("Could not find buffer object 0x%08x\n", handle); + return NULL; + } + + if (check_owner && priv != uo->owner) { + if (!drm_lookup_ref_object(priv, uo, _DRM_REF_USE)) + return NULL; + } + + bo = drm_user_object_entry(uo, drm_buffer_object_t, base); + atomic_inc(&bo->usage); + return bo; +} + +/* + * Call bo->mutex locked. + * Returns 1 if the buffer is currently rendered to or from. 0 otherwise. + * Doesn't do any fence flushing as opposed to the drm_bo_busy function. + */ + +static int drm_bo_quick_busy(drm_buffer_object_t * bo) +{ + drm_fence_object_t *fence = bo->fence; + + BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + if (fence) { + drm_device_t *dev = bo->dev; + if (drm_fence_object_signaled(fence, bo->fence_type)) { + drm_fence_usage_deref_unlocked(dev, fence); + bo->fence = NULL; + return 0; + } + return 1; + } + return 0; +} + +/* + * Call bo->mutex locked. + * Returns 1 if the buffer is currently rendered to or from. 0 otherwise. + */ + +static int drm_bo_busy(drm_buffer_object_t * bo) +{ + drm_fence_object_t *fence = bo->fence; + + BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + if (fence) { + drm_device_t *dev = bo->dev; + if (drm_fence_object_signaled(fence, bo->fence_type)) { + drm_fence_usage_deref_unlocked(dev, fence); + bo->fence = NULL; + return 0; + } + drm_fence_object_flush(dev, fence, DRM_FENCE_TYPE_EXE); + if (drm_fence_object_signaled(fence, bo->fence_type)) { + drm_fence_usage_deref_unlocked(dev, fence); + bo->fence = NULL; + return 0; + } + return 1; + } + return 0; +} + +static int drm_bo_read_cached(drm_buffer_object_t * bo) +{ + int ret = 0; + + BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + if (bo->node_card) + ret = drm_bo_evict(bo, DRM_BO_MEM_VRAM, 1, 0); + if (ret) + return ret; + if (bo->node_ttm) + ret = drm_bo_evict(bo, DRM_BO_MEM_TT, 1, 0); + return ret; +} + +/* + * Wait until a buffer is unmapped. + */ + +static int drm_bo_wait_unmapped(drm_buffer_object_t * bo, int no_wait) +{ + int ret = 0; + + if ((atomic_read(&bo->mapped) >= 0) && no_wait) + return -EBUSY; + + DRM_WAIT_ON(ret, bo->event_queue, 3 * DRM_HZ, + atomic_read(&bo->mapped) == -1); + + if (ret == -EINTR) + ret = -EAGAIN; + + return ret; +} + +static int drm_bo_check_unfenced(drm_buffer_object_t * bo) +{ + int ret; + + mutex_lock(&bo->mutex); + ret = (bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + mutex_unlock(&bo->mutex); + return ret; +} + +/* + * Wait until a buffer, scheduled to be fenced moves off the unfenced list. + * Until then, we cannot really do anything with it except delete it. + * The unfenced list is a PITA, and the operations + * 1) validating + * 2) submitting commands + * 3) fencing + * Should really be an atomic operation. + * We now "solve" this problem by keeping + * the buffer "unfenced" after validating, but before fencing. + */ + +static int drm_bo_wait_unfenced(drm_buffer_object_t * bo, int no_wait, + int eagain_if_wait) +{ + int ret = (bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + unsigned long _end = jiffies + 3 * DRM_HZ; + + if (ret && no_wait) + return -EBUSY; + else if (!ret) + return 0; + + do { + mutex_unlock(&bo->mutex); + DRM_WAIT_ON(ret, bo->event_queue, 3 * DRM_HZ, + !drm_bo_check_unfenced(bo)); + mutex_lock(&bo->mutex); + if (ret == -EINTR) + return -EAGAIN; + if (ret) { + DRM_ERROR + ("Error waiting for buffer to become fenced\n"); + return ret; + } + ret = (bo->priv_flags & _DRM_BO_FLAG_UNFENCED); + } while (ret && !time_after_eq(jiffies, _end)); + if (ret) { + DRM_ERROR("Timeout waiting for buffer to become fenced\n"); + return ret; + } + if (eagain_if_wait) + return -EAGAIN; + + return 0; +} + +/* + * Fill in the ioctl reply argument with buffer info. + * Bo locked. + */ + +static void drm_bo_fill_rep_arg(drm_buffer_object_t * bo, + drm_bo_arg_reply_t * rep) +{ + rep->handle = bo->base.hash.key; + rep->flags = bo->flags; + rep->size = bo->num_pages * PAGE_SIZE; + rep->offset = bo->offset; + + if (bo->ttm_object) { + rep->arg_handle = bo->ttm_object->map_list.user_token; + } else { + rep->arg_handle = 0; + } + + rep->mask = bo->mask; + rep->buffer_start = bo->buffer_start; + rep->fence_flags = bo->fence_type; + rep->rep_flags = 0; + + if ((bo->priv_flags & _DRM_BO_FLAG_UNFENCED) || drm_bo_quick_busy(bo)) { + DRM_FLAG_MASKED(rep->rep_flags, DRM_BO_REP_BUSY, + DRM_BO_REP_BUSY); + } +} + +/* + * Wait for buffer idle and register that we've mapped the buffer. + * Mapping is registered as a drm_ref_object with type _DRM_REF_TYPE1, + * so that if the client dies, the mapping is automatically + * unregistered. + */ + +static int drm_buffer_object_map(drm_file_t * priv, uint32_t handle, + uint32_t map_flags, unsigned hint, + drm_bo_arg_reply_t * rep) +{ + drm_buffer_object_t *bo; + drm_device_t *dev = priv->head->dev; + int ret = 0; + int no_wait = hint & DRM_BO_HINT_DONT_BLOCK; + + mutex_lock(&dev->struct_mutex); + bo = drm_lookup_buffer_object(priv, handle, 1); + mutex_unlock(&dev->struct_mutex); + + if (!bo) + return -EINVAL; + + mutex_lock(&bo->mutex); + if (!(hint & DRM_BO_HINT_ALLOW_UNFENCED_MAP)) { + ret = drm_bo_wait_unfenced(bo, no_wait, 0); + if (ret) + goto out; + } + + /* + * If this returns true, we are currently unmapped. + * We need to do this test, because unmapping can + * be done without the bo->mutex held. + */ + + while (1) { + if (atomic_inc_and_test(&bo->mapped)) { + if (no_wait && drm_bo_busy(bo)) { + atomic_dec(&bo->mapped); + ret = -EBUSY; + goto out; + } + ret = drm_bo_wait(bo, 0, 0, no_wait); + if (ret) { + atomic_dec(&bo->mapped); + goto out; + } + + if ((map_flags & DRM_BO_FLAG_READ) && + (bo->flags & DRM_BO_FLAG_READ_CACHED) && + (!(bo->flags & DRM_BO_FLAG_CACHED))) { + drm_bo_read_cached(bo); + } + break; + } else if ((map_flags & DRM_BO_FLAG_READ) && + (bo->flags & DRM_BO_FLAG_READ_CACHED) && + (!(bo->flags & DRM_BO_FLAG_CACHED))) { + + /* + * We are already mapped with different flags. + * need to wait for unmap. + */ + + ret = drm_bo_wait_unmapped(bo, no_wait); + if (ret) + goto out; + + continue; + } + break; + } + + mutex_lock(&dev->struct_mutex); + ret = drm_add_ref_object(priv, &bo->base, _DRM_REF_TYPE1); + mutex_unlock(&dev->struct_mutex); + if (ret) { + if (atomic_add_negative(-1, &bo->mapped)) + DRM_WAKEUP(&bo->event_queue); + + } else + drm_bo_fill_rep_arg(bo, rep); + out: + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(dev, bo); + return ret; +} + +static int drm_buffer_object_unmap(drm_file_t * priv, uint32_t handle) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_object_t *bo; + drm_ref_object_t *ro; + int ret = 0; + + mutex_lock(&dev->struct_mutex); + + bo = drm_lookup_buffer_object(priv, handle, 1); + if (!bo) { + ret = -EINVAL; + goto out; + } + + ro = drm_lookup_ref_object(priv, &bo->base, _DRM_REF_TYPE1); + if (!ro) { + ret = -EINVAL; + goto out; + } + + drm_remove_ref_object(priv, ro); + drm_bo_usage_deref_locked(dev, bo); + out: + mutex_unlock(&dev->struct_mutex); + return ret; +} + +/* + * Call struct-sem locked. + */ + +static void drm_buffer_user_object_unmap(drm_file_t * priv, + drm_user_object_t * uo, + drm_ref_t action) +{ + drm_buffer_object_t *bo = + drm_user_object_entry(uo, drm_buffer_object_t, base); + + /* + * We DON'T want to take the bo->lock here, because we want to + * hold it when we wait for unmapped buffer. + */ + + BUG_ON(action != _DRM_REF_TYPE1); + + if (atomic_add_negative(-1, &bo->mapped)) + DRM_WAKEUP(&bo->event_queue); +} + +/* + * bo->mutex locked. + */ + +static int drm_bo_move_buffer(drm_buffer_object_t * bo, uint32_t new_flags, + int no_wait, int force_no_move) +{ + int ret = 0; + + /* + * Flush outstanding fences. + */ + drm_bo_busy(bo); + + /* + * Make sure we're not mapped. + */ + + ret = drm_bo_wait_unmapped(bo, no_wait); + if (ret) + return ret; + + /* + * Wait for outstanding fences. + */ + + ret = drm_bo_wait(bo, 0, 0, no_wait); + + if (ret == -EINTR) + return -EAGAIN; + if (ret) + return ret; + + if (new_flags & DRM_BO_FLAG_MEM_TT) { + ret = drm_move_local_to_tt(bo, no_wait); + if (ret) + return ret; + } else { + drm_move_tt_to_local(bo, 0, force_no_move); + } + + return 0; +} + +/* + * bo locked. + */ + +static int drm_buffer_object_validate(drm_buffer_object_t * bo, + uint32_t new_flags, + int move_unfenced, int no_wait) +{ + drm_device_t *dev = bo->dev; + drm_buffer_manager_t *bm = &dev->bm; + uint32_t flag_diff = (new_flags ^ bo->flags); + drm_bo_driver_t *driver = dev->driver->bo_driver; + + int ret; + + if (new_flags & DRM_BO_FLAG_MEM_VRAM) { + DRM_ERROR("Vram support not implemented yet\n"); + return -EINVAL; + } + + DRM_DEBUG("New flags 0x%08x, Old flags 0x%08x\n", new_flags, bo->flags); + ret = driver->fence_type(new_flags, &bo->fence_class, &bo->fence_type); + if (ret) { + DRM_ERROR("Driver did not support given buffer permissions\n"); + return ret; + } + + /* + * Move out if we need to change caching policy. + */ + + if ((flag_diff & DRM_BO_FLAG_BIND_CACHED) && + !(bo->flags & DRM_BO_FLAG_MEM_LOCAL)) { + if (bo->flags & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) { + DRM_ERROR("Cannot change caching policy of " + "pinned buffer.\n"); + return -EINVAL; + } + ret = drm_bo_move_buffer(bo, DRM_BO_FLAG_MEM_LOCAL, no_wait, 0); + if (ret) { + if (ret != -EAGAIN) + DRM_ERROR("Failed moving buffer.\n"); + return ret; + } + } + DRM_MASK_VAL(bo->flags, DRM_BO_FLAG_BIND_CACHED, new_flags); + flag_diff = (new_flags ^ bo->flags); + + /* + * Check whether we dropped no_move policy, and in that case, + * release reserved manager regions. + */ + + if ((flag_diff & DRM_BO_FLAG_NO_MOVE) && + !(new_flags & DRM_BO_FLAG_NO_MOVE)) { + mutex_lock(&dev->struct_mutex); + if (bo->node_ttm) { + drm_mm_put_block(bo->node_ttm); + bo->node_ttm = NULL; + } + if (bo->node_card) { + drm_mm_put_block(bo->node_card); + bo->node_card = NULL; + } + mutex_unlock(&dev->struct_mutex); + } + + /* + * Check whether we need to move buffer. + */ + + if ((bo->type != drm_bo_type_fake) && (flag_diff & DRM_BO_MASK_MEM)) { + ret = drm_bo_move_buffer(bo, new_flags, no_wait, 1); + if (ret) { + if (ret != -EAGAIN) + DRM_ERROR("Failed moving buffer.\n"); + return ret; + } + } + + if (move_unfenced) { + + /* + * Place on unfenced list. + */ + + DRM_FLAG_MASKED(bo->priv_flags, _DRM_BO_FLAG_UNFENCED, + _DRM_BO_FLAG_UNFENCED); + mutex_lock(&dev->struct_mutex); + list_del(&bo->lru_ttm); + list_add_tail(&bo->lru_ttm, &bm->unfenced); + list_del_init(&bo->lru_card); + mutex_unlock(&dev->struct_mutex); + } else { + + mutex_lock(&dev->struct_mutex); + list_del_init(&bo->lru_ttm); + list_del_init(&bo->lru_card); + drm_bo_add_to_lru(bo, bm); + mutex_unlock(&dev->struct_mutex); + } + + bo->flags = new_flags; + return 0; +} + +static int drm_bo_handle_validate(drm_file_t * priv, uint32_t handle, + uint32_t flags, uint32_t mask, uint32_t hint, + drm_bo_arg_reply_t * rep) +{ + drm_buffer_object_t *bo; + drm_device_t *dev = priv->head->dev; + int ret; + int no_wait = hint & DRM_BO_HINT_DONT_BLOCK; + uint32_t new_flags; + + bo = drm_lookup_buffer_object(priv, handle, 1); + if (!bo) { + return -EINVAL; + } + + mutex_lock(&bo->mutex); + ret = drm_bo_wait_unfenced(bo, no_wait, 0); + + if (ret) + goto out; + + ret = drm_bo_new_flags(dev, bo->flags, + (flags & mask) | (bo->mask & ~mask), hint, + 0, &new_flags, &bo->mask); + + if (ret) + goto out; + + ret = + drm_buffer_object_validate(bo, new_flags, + !(hint & DRM_BO_HINT_DONT_FENCE), + no_wait); + drm_bo_fill_rep_arg(bo, rep); + + out: + + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(dev, bo); + return ret; +} + +static int drm_bo_handle_info(drm_file_t * priv, uint32_t handle, + drm_bo_arg_reply_t * rep) +{ + drm_buffer_object_t *bo; + + bo = drm_lookup_buffer_object(priv, handle, 1); + if (!bo) { + return -EINVAL; + } + mutex_lock(&bo->mutex); + if (!(bo->priv_flags & _DRM_BO_FLAG_UNFENCED)) + (void)drm_bo_busy(bo); + drm_bo_fill_rep_arg(bo, rep); + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(bo->dev, bo); + return 0; +} + +static int drm_bo_handle_wait(drm_file_t * priv, uint32_t handle, + uint32_t hint, drm_bo_arg_reply_t * rep) +{ + drm_buffer_object_t *bo; + int no_wait = hint & DRM_BO_HINT_DONT_BLOCK; + int ret; + + bo = drm_lookup_buffer_object(priv, handle, 1); + if (!bo) { + return -EINVAL; + } + + mutex_lock(&bo->mutex); + ret = drm_bo_wait_unfenced(bo, no_wait, 0); + if (ret) + goto out; + ret = drm_bo_wait(bo, hint & DRM_BO_HINT_WAIT_LAZY, 0, no_wait); + if (ret) + goto out; + + drm_bo_fill_rep_arg(bo, rep); + + out: + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(bo->dev, bo); + return ret; +} + +/* + * Call bo->mutex locked. + */ + +static int drm_bo_add_ttm(drm_file_t * priv, drm_buffer_object_t * bo) +{ + drm_device_t *dev = bo->dev; + drm_ttm_object_t *to = NULL; + int ret = 0; + uint32_t ttm_flags = 0; + + bo->ttm_object = NULL; + bo->ttm = NULL; + + switch (bo->type) { + case drm_bo_type_dc: + mutex_lock(&dev->struct_mutex); + ret = drm_ttm_object_create(dev, bo->num_pages * PAGE_SIZE, + ttm_flags, &to); + mutex_unlock(&dev->struct_mutex); + break; + case drm_bo_type_user: + case drm_bo_type_fake: + break; + default: + DRM_ERROR("Illegal buffer object type\n"); + ret = -EINVAL; + break; + } + + if (ret) { + return ret; + } + + if (to) { + bo->ttm_object = to; + bo->ttm = drm_ttm_from_object(to); + } + return ret; +} + +int drm_buffer_object_create(drm_file_t * priv, + unsigned long size, + drm_bo_type_t type, + uint32_t mask, + uint32_t hint, + unsigned long buffer_start, + drm_buffer_object_t ** buf_obj) +{ + drm_device_t *dev = priv->head->dev; + drm_buffer_manager_t *bm = &dev->bm; + drm_buffer_object_t *bo; + int ret = 0; + uint32_t new_flags; + unsigned long num_pages; + + drm_bo_delayed_delete(dev); + + if ((buffer_start & ~PAGE_MASK) && (type != drm_bo_type_fake)) { + DRM_ERROR("Invalid buffer object start.\n"); + return -EINVAL; + } + num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; + if (num_pages == 0) { + DRM_ERROR("Illegal buffer object size.\n"); + return -EINVAL; + } + + bo = drm_ctl_calloc(1, sizeof(*bo), DRM_MEM_BUFOBJ); + + if (!bo) + return -ENOMEM; + + mutex_init(&bo->mutex); + mutex_lock(&bo->mutex); + + atomic_set(&bo->usage, 1); + atomic_set(&bo->mapped, -1); + DRM_INIT_WAITQUEUE(&bo->event_queue); + INIT_LIST_HEAD(&bo->lru_ttm); + INIT_LIST_HEAD(&bo->lru_card); + INIT_LIST_HEAD(&bo->ddestroy); + bo->dev = dev; + bo->type = type; + bo->num_pages = num_pages; + bo->node_card = NULL; + bo->node_ttm = NULL; + if (bo->type == drm_bo_type_fake) { + bo->offset = buffer_start; + bo->buffer_start = 0; + } else { + bo->buffer_start = buffer_start; + } + bo->priv_flags = 0; + bo->flags = DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_CACHED; + atomic_inc(&bm->count); + ret = drm_bo_new_flags(dev, bo->flags, mask, hint, + 1, &new_flags, &bo->mask); + if (ret) + goto out_err; + ret = drm_bo_add_ttm(priv, bo); + if (ret) + goto out_err; + + ret = drm_buffer_object_validate(bo, new_flags, 0, + hint & DRM_BO_HINT_DONT_BLOCK); + if (ret) + goto out_err; + + mutex_unlock(&bo->mutex); + *buf_obj = bo; + return 0; + + out_err: + mutex_unlock(&bo->mutex); + drm_bo_usage_deref_unlocked(dev, bo); + return ret; +} + +static int drm_bo_add_user_object(drm_file_t * priv, drm_buffer_object_t * bo, + int shareable) +{ + drm_device_t *dev = priv->head->dev; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_add_user_object(priv, &bo->base, shareable); + if (ret) + goto out; + + bo->base.remove = drm_bo_base_deref_locked; + bo->base.type = drm_buffer_type; + bo->base.ref_struct_locked = NULL; + bo->base.unref = drm_buffer_user_object_unmap; + + out: + mutex_unlock(&dev->struct_mutex); + return ret; +} + +static int drm_bo_lock_test(drm_device_t * dev, struct file *filp) +{ + LOCK_TEST_WITH_RETURN(dev, filp); + return 0; +} + +int drm_bo_ioctl(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_bo_arg_t arg; + drm_bo_arg_request_t *req = &arg.d.req; + drm_bo_arg_reply_t rep; + unsigned long next; + drm_user_object_t *uo; + drm_buffer_object_t *entry; + + if (!dev->bm.initialized) { + DRM_ERROR("Buffer object manager is not initialized.\n"); + return -EINVAL; + } + + do { + DRM_COPY_FROM_USER_IOCTL(arg, (void __user *)data, sizeof(arg)); + + if (arg.handled) { + data = arg.next; + continue; + } + + rep.ret = 0; + switch (req->op) { + case drm_bo_create: + rep.ret = + drm_buffer_object_create(priv, req->size, + req->type, + req->mask, + req->hint, + req->buffer_start, &entry); + if (rep.ret) + break; + + rep.ret = + drm_bo_add_user_object(priv, entry, + req-> + mask & + DRM_BO_FLAG_SHAREABLE); + if (rep.ret) + drm_bo_usage_deref_unlocked(dev, entry); + + if (rep.ret) + break; + + mutex_lock(&entry->mutex); + drm_bo_fill_rep_arg(entry, &rep); + mutex_unlock(&entry->mutex); + break; + case drm_bo_unmap: + rep.ret = drm_buffer_object_unmap(priv, req->handle); + break; + case drm_bo_map: + rep.ret = drm_buffer_object_map(priv, req->handle, + req->mask, + req->hint, &rep); + break; + case drm_bo_destroy: + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, req->handle); + if (!uo || (uo->type != drm_buffer_type) + || uo->owner != priv) { + mutex_unlock(&dev->struct_mutex); + rep.ret = -EINVAL; + break; + } + rep.ret = drm_remove_user_object(priv, uo); + mutex_unlock(&dev->struct_mutex); + break; + case drm_bo_reference: + rep.ret = drm_user_object_ref(priv, req->handle, + drm_buffer_type, &uo); + if (rep.ret) + break; + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, req->handle); + entry = + drm_user_object_entry(uo, drm_buffer_object_t, + base); + atomic_dec(&entry->usage); + mutex_unlock(&dev->struct_mutex); + mutex_lock(&entry->mutex); + drm_bo_fill_rep_arg(entry, &rep); + mutex_unlock(&entry->mutex); + break; + case drm_bo_unreference: + rep.ret = drm_user_object_unref(priv, req->handle, + drm_buffer_type); + break; + case drm_bo_validate: + rep.ret = drm_bo_lock_test(dev, filp); + + if (rep.ret) + break; + rep.ret = + drm_bo_handle_validate(priv, req->handle, req->mask, + req->arg_handle, req->hint, + &rep); + break; + case drm_bo_fence: + rep.ret = drm_bo_lock_test(dev, filp); + if (rep.ret) + break; + /**/ break; + case drm_bo_info: + rep.ret = drm_bo_handle_info(priv, req->handle, &rep); + break; + case drm_bo_wait_idle: + rep.ret = drm_bo_handle_wait(priv, req->handle, + req->hint, &rep); + break; + case drm_bo_ref_fence: + rep.ret = -EINVAL; + DRM_ERROR("Function is not implemented yet.\n"); + default: + rep.ret = -EINVAL; + } + next = arg.next; + + /* + * A signal interrupted us. Make sure the ioctl is restartable. + */ + + if (rep.ret == -EAGAIN) + return -EAGAIN; + + arg.handled = 1; + arg.d.rep = rep; + DRM_COPY_TO_USER_IOCTL((void __user *)data, arg, sizeof(arg)); + data = next; + } while (data); + return 0; +} + +/* + * dev->struct_sem locked. + */ + +static int drm_bo_force_list_clean(drm_device_t * dev, + struct list_head *head, + unsigned mem_type, + int force_no_move, int allow_errors) +{ + drm_buffer_manager_t *bm = &dev->bm; + struct list_head *list, *next, *prev; + drm_buffer_object_t *entry; + int ret; + int clean; + + retry: + clean = 1; + list_for_each_safe(list, next, head) { + prev = list->prev; + entry = drm_bo_entry(list, mem_type); + atomic_inc(&entry->usage); + mutex_unlock(&dev->struct_mutex); + mutex_lock(&entry->mutex); + mutex_lock(&dev->struct_mutex); + + if (prev != list->prev || next != list->next) { + mutex_unlock(&entry->mutex); + goto retry; + } + if (drm_bo_mm_node(entry, mem_type)) { + clean = 0; + + /* + * Expire the fence. + */ + + mutex_unlock(&dev->struct_mutex); + if (entry->fence && bm->nice_mode) { + unsigned long _end = jiffies + 3 * DRM_HZ; + do { + ret = drm_bo_wait(entry, 0, 1, 0); + if (ret && allow_errors) { + if (ret == -EINTR) + ret = -EAGAIN; + goto out_err; + } + } while (ret && !time_after_eq(jiffies, _end)); + + if (entry->fence) { + bm->nice_mode = 0; + DRM_ERROR("Detected GPU hang or " + "fence manager was taken down. " + "Evicting waiting buffers\n"); + } + } + if (entry->fence) { + drm_fence_usage_deref_unlocked(dev, + entry->fence); + entry->fence = NULL; + } + + DRM_MASK_VAL(entry->priv_flags, _DRM_BO_FLAG_UNFENCED, + 0); + + if (force_no_move) { + DRM_MASK_VAL(entry->flags, DRM_BO_FLAG_NO_MOVE, + 0); + } + if (entry->flags & DRM_BO_FLAG_NO_EVICT) { + DRM_ERROR("A DRM_BO_NO_EVICT buffer present at " + "cleanup. Removing flag and evicting.\n"); + entry->flags &= ~DRM_BO_FLAG_NO_EVICT; + entry->mask &= ~DRM_BO_FLAG_NO_EVICT; + } + + ret = drm_bo_evict(entry, mem_type, 1, force_no_move); + if (ret) { + if (allow_errors) { + goto out_err; + } else { + DRM_ERROR("Aargh. Eviction failed.\n"); + } + } + mutex_lock(&dev->struct_mutex); + } + mutex_unlock(&entry->mutex); + drm_bo_usage_deref_locked(dev, entry); + if (prev != list->prev || next != list->next) { + goto retry; + } + } + if (!clean) + goto retry; + return 0; + out_err: + mutex_unlock(&entry->mutex); + drm_bo_usage_deref_unlocked(dev, entry); + mutex_lock(&dev->struct_mutex); + return ret; +} + +int drm_bo_clean_mm(drm_device_t * dev, unsigned mem_type) +{ + drm_buffer_manager_t *bm = &dev->bm; + int ret = -EINVAL; + + if (mem_type >= DRM_BO_MEM_TYPES) { + DRM_ERROR("Illegal memory type %d\n", mem_type); + return ret; + } + + if (!bm->has_type[mem_type]) { + DRM_ERROR("Trying to take down uninitialized " + "memory manager type\n"); + return ret; + } + bm->use_type[mem_type] = 0; + bm->has_type[mem_type] = 0; + + ret = 0; + if (mem_type > 0) { + + /* + * Throw out unfenced buffers. + */ + + drm_bo_force_list_clean(dev, &bm->unfenced, mem_type, 1, 0); + + /* + * Throw out evicted no-move buffers. + */ + + drm_bo_force_list_clean(dev, &bm->pinned[DRM_BO_MEM_LOCAL], + mem_type, 1, 0); + drm_bo_force_list_clean(dev, &bm->lru[mem_type], mem_type, 1, + 0); + drm_bo_force_list_clean(dev, &bm->pinned[mem_type], mem_type, 1, + 0); + + if (drm_mm_clean(&bm->manager[mem_type])) { + drm_mm_takedown(&bm->manager[mem_type]); + } else { + ret = -EBUSY; + } + } + + return ret; +} + +static int drm_bo_lock_mm(drm_device_t * dev, unsigned mem_type) +{ + int ret; + drm_buffer_manager_t *bm = &dev->bm; + + if (mem_type == 0 || mem_type >= DRM_BO_MEM_TYPES) { + DRM_ERROR("Illegal memory manager memory type %u,\n", mem_type); + return -EINVAL; + } + + ret = drm_bo_force_list_clean(dev, &bm->unfenced, mem_type, 0, 1); + if (ret) + return ret; + ret = drm_bo_force_list_clean(dev, &bm->lru[mem_type], mem_type, 0, 1); + if (ret) + return ret; + ret = + drm_bo_force_list_clean(dev, &bm->pinned[mem_type], mem_type, 0, 1); + return ret; +} + +static int drm_bo_init_mm(drm_device_t * dev, + unsigned type, + unsigned long p_offset, unsigned long p_size) +{ + drm_buffer_manager_t *bm = &dev->bm; + int ret = -EINVAL; + + if (type >= DRM_BO_MEM_TYPES) { + DRM_ERROR("Illegal memory type %d\n", type); + return ret; + } + if (bm->has_type[type]) { + DRM_ERROR("Memory manager already initialized for type %d\n", + type); + return ret; + } + + ret = 0; + if (type != DRM_BO_MEM_LOCAL) { + if (!p_size) { + DRM_ERROR("Zero size memory manager type %d\n", type); + return ret; + } + ret = drm_mm_init(&bm->manager[type], p_offset, p_size); + if (ret) + return ret; + } + bm->has_type[type] = 1; + bm->use_type[type] = 1; + + INIT_LIST_HEAD(&bm->lru[type]); + INIT_LIST_HEAD(&bm->pinned[type]); + + return 0; +} + +int drm_bo_driver_finish(drm_device_t * dev) +{ + drm_buffer_manager_t *bm = &dev->bm; + int ret = 0; + unsigned i = DRM_BO_MEM_TYPES; + + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + + if (!bm->initialized) + goto out; + + while (i--) { + if (bm->has_type[i]) { + bm->use_type[i] = 0; + if ((i != DRM_BO_MEM_LOCAL) && drm_bo_clean_mm(dev, i)) { + ret = -EBUSY; + DRM_ERROR("DRM memory manager type %d " + "is not clean.\n", i); + } + bm->has_type[i] = 0; + } + } + mutex_unlock(&dev->struct_mutex); + drm_bo_delayed_delete(dev); + mutex_lock(&dev->struct_mutex); + bm->initialized = 0; + mutex_unlock(&dev->struct_mutex); + if (!cancel_delayed_work(&bm->wq)) { + flush_scheduled_work(); + } + mutex_lock(&dev->struct_mutex); + out: + mutex_unlock(&dev->struct_mutex); + mutex_unlock(&dev->bm.init_mutex); + return ret; +} + +int drm_bo_driver_init(drm_device_t * dev) +{ + drm_bo_driver_t *driver = dev->driver->bo_driver; + drm_buffer_manager_t *bm = &dev->bm; + int ret = -EINVAL; + + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + if (!driver) + goto out_unlock; + + /* + * Initialize the system memory buffer type. + * Other types need to be driver / IOCTL initialized. + */ + + ret = drm_bo_init_mm(dev, 0, 0, 0); + if (ret) + goto out_unlock; + + INIT_WORK(&bm->wq, &drm_bo_delayed_workqueue, dev); + bm->initialized = 1; + bm->nice_mode = 1; + atomic_set(&bm->count, 0); + bm->cur_pages = 0; + INIT_LIST_HEAD(&bm->unfenced); + INIT_LIST_HEAD(&bm->ddestroy); + out_unlock: + mutex_unlock(&dev->struct_mutex); + mutex_unlock(&dev->bm.init_mutex); + return ret; +} + +EXPORT_SYMBOL(drm_bo_driver_init); + +int drm_mm_init_ioctl(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + + int ret = 0; + drm_mm_init_arg_t arg; + drm_buffer_manager_t *bm = &dev->bm; + drm_bo_driver_t *driver = dev->driver->bo_driver; + + if (!driver) { + DRM_ERROR("Buffer objects are not supported by this driver\n"); + return -EINVAL; + } + + DRM_COPY_FROM_USER_IOCTL(arg, (void __user *)data, sizeof(arg)); + + switch (arg.req.op) { + case mm_init: + ret = -EINVAL; + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + if (!bm->initialized) { + DRM_ERROR("DRM memory manager was not initialized.\n"); + break; + } + if (arg.req.mem_type == 0) { + DRM_ERROR + ("System memory buffers already initialized.\n"); + break; + } + ret = drm_bo_init_mm(dev, arg.req.mem_type, + arg.req.p_offset, arg.req.p_size); + break; + case mm_takedown: + LOCK_TEST_WITH_RETURN(dev, filp); + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + ret = -EINVAL; + if (!bm->initialized) { + DRM_ERROR("DRM memory manager was not initialized\n"); + break; + } + if (arg.req.mem_type == 0) { + DRM_ERROR("No takedown for System memory buffers.\n"); + break; + } + ret = 0; + if (drm_bo_clean_mm(dev, arg.req.mem_type)) { + DRM_ERROR("Memory manager type %d not clean. " + "Delaying takedown\n", arg.req.mem_type); + } + break; + case mm_lock: + LOCK_TEST_WITH_RETURN(dev, filp); + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + ret = drm_bo_lock_mm(dev, arg.req.mem_type); + break; + case mm_unlock: + LOCK_TEST_WITH_RETURN(dev, filp); + mutex_lock(&dev->bm.init_mutex); + mutex_lock(&dev->struct_mutex); + ret = 0; + break; + default: + DRM_ERROR("Function not implemented yet\n"); + return -EINVAL; + } + + mutex_unlock(&dev->struct_mutex); + mutex_unlock(&dev->bm.init_mutex); + if (ret) + return ret; + + DRM_COPY_TO_USER_IOCTL((void __user *)data, arg, sizeof(arg)); + return 0; +} diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c index a2a3dbf7..d6ebc8d1 100644 --- a/linux-core/drm_bufs.c +++ b/linux-core/drm_bufs.c @@ -80,14 +80,14 @@ static int drm_map_handle(drm_device_t *dev, drm_hash_item_t *hash, if (!use_hashed_handle) { int ret; - hash->key = user_token; + hash->key = user_token >> PAGE_SHIFT; ret = drm_ht_insert_item(&dev->map_hash, hash); if (ret != -EINVAL) return ret; } return drm_ht_just_insert_please(&dev->map_hash, hash, user_token, 32 - PAGE_SHIFT - 3, - PAGE_SHIFT, DRM_MAP_HASH_OFFSET); + 0, DRM_MAP_HASH_OFFSET >> PAGE_SHIFT); } /** @@ -301,7 +301,7 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset, return ret; } - list->user_token = list->hash.key; + list->user_token = list->hash.key << PAGE_SHIFT; mutex_unlock(&dev->struct_mutex); *maplist = list; @@ -386,7 +386,8 @@ int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map) if (r_list->map == map) { list_del(list); - drm_ht_remove_key(&dev->map_hash, r_list->user_token); + drm_ht_remove_key(&dev->map_hash, + r_list->user_token >> PAGE_SHIFT); drm_free(list, sizeof(*list), DRM_MEM_MAPS); break; } @@ -422,6 +423,8 @@ int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map) dmah.size = map->size; __drm_pci_free(dev, &dmah); break; + case _DRM_TTM: + BUG_ON(1); } drm_free(map, sizeof(*map), DRM_MEM_MAPS); diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c new file mode 100644 index 00000000..90e53419 --- /dev/null +++ b/linux-core/drm_compat.c @@ -0,0 +1,421 @@ +/************************************************************************** + * + * This kernel module is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + **************************************************************************/ +/* + * This code provides access to unexported mm kernel features. It is necessary + * to use the new DRM memory manager code with kernels that don't support it + * directly. + * + * Authors: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> + * Linux kernel mm subsystem authors. + * (Most code taken from there). + */ + +#include "drmP.h" + +#if defined(CONFIG_X86) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) +int drm_map_page_into_agp(struct page *page) +{ + int i; + i = change_page_attr(page, 1, PAGE_KERNEL_NOCACHE); + /* Caller's responsibility to call global_flush_tlb() for + * performance reasons */ + return i; +} + +int drm_unmap_page_from_agp(struct page *page) +{ + int i; + i = change_page_attr(page, 1, PAGE_KERNEL); + /* Caller's responsibility to call global_flush_tlb() for + * performance reasons */ + return i; +} +#endif + + +pgprot_t vm_get_page_prot(unsigned long vm_flags) +{ +#ifdef MODULE + static pgprot_t drm_protection_map[16] = { + __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111, + __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111 + }; + + return drm_protection_map[vm_flags & 0x0F]; +#else + extern pgprot_t protection_map[]; + return protection_map[vm_flags & 0x0F]; +#endif +}; + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) + +static int drm_pte_is_clear(struct vm_area_struct *vma, + unsigned long addr) +{ + struct mm_struct *mm = vma->vm_mm; + int ret = 1; + pte_t *pte; + pmd_t *pmd; + pud_t *pud; + pgd_t *pgd; + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) + spin_lock(&mm->page_table_lock); +#else + spinlock_t *ptl; +#endif + + pgd = pgd_offset(mm, addr); + if (pgd_none(*pgd)) + goto unlock; + pud = pud_offset(pgd, addr); + if (pud_none(*pud)) + goto unlock; + pmd = pmd_offset(pud, addr); + if (pmd_none(*pmd)) + goto unlock; +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) + pte = pte_offset_map(pmd, addr); +#else + pte = pte_offset_map_lock(mm, pmd, addr, &ptl); +#endif + if (!pte) + goto unlock; + ret = pte_none(*pte); +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) + pte_unmap(pte); + unlock: + spin_unlock(&mm->page_table_lock); +#else + pte_unmap_unlock(pte, ptl); + unlock: +#endif + return ret; +} + +int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, pgprot_t pgprot) +{ + int ret; + if (!drm_pte_is_clear(vma, addr)) + return -EBUSY; + + ret = io_remap_pfn_range(vma, addr, pfn, PAGE_SIZE, pgprot); + return ret; +} + + +static struct { + spinlock_t lock; + struct page *dummy_page; + atomic_t present; +} drm_np_retry = +{SPIN_LOCK_UNLOCKED, NOPAGE_OOM, ATOMIC_INIT(0)}; + +struct page * get_nopage_retry(void) +{ + if (atomic_read(&drm_np_retry.present) == 0) { + struct page *page = alloc_page(GFP_KERNEL); + if (!page) + return NOPAGE_OOM; + spin_lock(&drm_np_retry.lock); + drm_np_retry.dummy_page = page; + atomic_set(&drm_np_retry.present,1); + spin_unlock(&drm_np_retry.lock); + } + get_page(drm_np_retry.dummy_page); + return drm_np_retry.dummy_page; +} + +void free_nopage_retry(void) +{ + if (atomic_read(&drm_np_retry.present) == 1) { + spin_lock(&drm_np_retry.lock); + __free_page(drm_np_retry.dummy_page); + drm_np_retry.dummy_page = NULL; + atomic_set(&drm_np_retry.present, 0); + spin_unlock(&drm_np_retry.lock); + } +} +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) + +struct page *drm_vm_ttm_nopage(struct vm_area_struct *vma, + unsigned long address, + int *type) +{ + struct fault_data data; + + if (type) + *type = VM_FAULT_MINOR; + + data.address = address; + data.vma = vma; + drm_vm_ttm_fault(vma, &data); + switch (data.type) { + case VM_FAULT_OOM: + return NOPAGE_OOM; + case VM_FAULT_SIGBUS: + return NOPAGE_SIGBUS; + default: + break; + } + + return NOPAGE_REFAULT; +} + +#endif + +#ifdef DRM_ODD_MM_COMPAT + +typedef struct p_mm_entry { + struct list_head head; + struct mm_struct *mm; + atomic_t refcount; + int locked; +} p_mm_entry_t; + +typedef struct vma_entry { + struct list_head head; + struct vm_area_struct *vma; +} vma_entry_t; + + +struct page *drm_vm_ttm_nopage(struct vm_area_struct *vma, + unsigned long address, + int *type) +{ + drm_local_map_t *map = (drm_local_map_t *) vma->vm_private_data; + unsigned long page_offset; + struct page *page; + drm_ttm_t *ttm; + drm_buffer_manager_t *bm; + drm_device_t *dev; + + /* + * FIXME: Check can't map aperture flag. + */ + + if (type) + *type = VM_FAULT_MINOR; + + if (!map) + return NOPAGE_OOM; + + if (address > vma->vm_end) + return NOPAGE_SIGBUS; + + ttm = (drm_ttm_t *) map->offset; + dev = ttm->dev; + mutex_lock(&dev->struct_mutex); + drm_fixup_ttm_caching(ttm); + BUG_ON(ttm->page_flags & DRM_TTM_PAGE_UNCACHED); + + bm = &dev->bm; + page_offset = (address - vma->vm_start) >> PAGE_SHIFT; + page = ttm->pages[page_offset]; + + if (!page) { + if (drm_alloc_memctl(PAGE_SIZE)) { + page = NOPAGE_OOM; + goto out; + } + page = ttm->pages[page_offset] = drm_alloc_gatt_pages(0); + if (!page) { + drm_free_memctl(PAGE_SIZE); + page = NOPAGE_OOM; + goto out; + } + ++bm->cur_pages; + SetPageLocked(page); + } + + get_page(page); + out: + mutex_unlock(&dev->struct_mutex); + return page; +} + + + + +int drm_ttm_map_bound(struct vm_area_struct *vma) +{ + drm_local_map_t *map = (drm_local_map_t *)vma->vm_private_data; + drm_ttm_t *ttm = (drm_ttm_t *) map->offset; + int ret = 0; + + if (ttm->page_flags & DRM_TTM_PAGE_UNCACHED) { + unsigned long pfn = ttm->aper_offset + + (ttm->be->aperture_base >> PAGE_SHIFT); + pgprot_t pgprot = drm_io_prot(ttm->be->drm_map_type, vma); + + ret = io_remap_pfn_range(vma, vma->vm_start, pfn, + vma->vm_end - vma->vm_start, + pgprot); + } + return ret; +} + + +int drm_ttm_add_vma(drm_ttm_t * ttm, struct vm_area_struct *vma) +{ + p_mm_entry_t *entry, *n_entry; + vma_entry_t *v_entry; + drm_local_map_t *map = (drm_local_map_t *) + vma->vm_private_data; + struct mm_struct *mm = vma->vm_mm; + + v_entry = drm_ctl_alloc(sizeof(*v_entry), DRM_MEM_TTM); + if (!v_entry) { + DRM_ERROR("Allocation of vma pointer entry failed\n"); + return -ENOMEM; + } + v_entry->vma = vma; + map->handle = (void *) v_entry; + list_add_tail(&v_entry->head, &ttm->vma_list); + + list_for_each_entry(entry, &ttm->p_mm_list, head) { + if (mm == entry->mm) { + atomic_inc(&entry->refcount); + return 0; + } else if ((unsigned long)mm < (unsigned long)entry->mm) ; + } + + n_entry = drm_ctl_alloc(sizeof(*n_entry), DRM_MEM_TTM); + if (!n_entry) { + DRM_ERROR("Allocation of process mm pointer entry failed\n"); + return -ENOMEM; + } + INIT_LIST_HEAD(&n_entry->head); + n_entry->mm = mm; + n_entry->locked = 0; + atomic_set(&n_entry->refcount, 0); + list_add_tail(&n_entry->head, &entry->head); + + return 0; +} + +void drm_ttm_delete_vma(drm_ttm_t * ttm, struct vm_area_struct *vma) +{ + p_mm_entry_t *entry, *n; + vma_entry_t *v_entry, *v_n; + int found = 0; + struct mm_struct *mm = vma->vm_mm; + + list_for_each_entry_safe(v_entry, v_n, &ttm->vma_list, head) { + if (v_entry->vma == vma) { + found = 1; + list_del(&v_entry->head); + drm_ctl_free(v_entry, sizeof(*v_entry), DRM_MEM_TTM); + break; + } + } + BUG_ON(!found); + + list_for_each_entry_safe(entry, n, &ttm->p_mm_list, head) { + if (mm == entry->mm) { + if (atomic_add_negative(-1, &entry->refcount)) { + list_del(&entry->head); + BUG_ON(entry->locked); + drm_ctl_free(entry, sizeof(*entry), DRM_MEM_TTM); + } + return; + } + } + BUG_ON(1); +} + + + +int drm_ttm_lock_mm(drm_ttm_t * ttm) +{ + p_mm_entry_t *entry; + int lock_ok = 1; + + list_for_each_entry(entry, &ttm->p_mm_list, head) { + BUG_ON(entry->locked); + if (!down_write_trylock(&entry->mm->mmap_sem)) { + lock_ok = 0; + break; + } + entry->locked = 1; + } + + if (lock_ok) + return 0; + + list_for_each_entry(entry, &ttm->p_mm_list, head) { + if (!entry->locked) + break; + up_write(&entry->mm->mmap_sem); + entry->locked = 0; + } + + /* + * Possible deadlock. Try again. Our callers should handle this + * and restart. + */ + + return -EAGAIN; +} + +void drm_ttm_unlock_mm(drm_ttm_t * ttm) +{ + p_mm_entry_t *entry; + + list_for_each_entry(entry, &ttm->p_mm_list, head) { + BUG_ON(!entry->locked); + up_write(&entry->mm->mmap_sem); + entry->locked = 0; + } +} + +int drm_ttm_remap_bound(drm_ttm_t *ttm) +{ + vma_entry_t *v_entry; + int ret = 0; + + list_for_each_entry(v_entry, &ttm->vma_list, head) { + ret = drm_ttm_map_bound(v_entry->vma); + if (ret) + break; + } + + drm_ttm_unlock_mm(ttm); + return ret; +} + +void drm_ttm_finish_unmap(drm_ttm_t *ttm) +{ + vma_entry_t *v_entry; + + if (!(ttm->page_flags & DRM_TTM_PAGE_UNCACHED)) + return; + + list_for_each_entry(v_entry, &ttm->vma_list, head) { + v_entry->vma->vm_flags &= ~VM_PFNMAP; + } + drm_ttm_unlock_mm(ttm); +} + +#endif + diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h index 407853d7..5617fb7f 100644 --- a/linux-core/drm_compat.h +++ b/linux-core/drm_compat.h @@ -31,6 +31,7 @@ * OTHER DEALINGS IN THE SOFTWARE. */ +#include <asm/agp.h> #ifndef _DRM_COMPAT_H_ #define _DRM_COMPAT_H_ @@ -227,4 +228,148 @@ static inline int remap_pfn_range(struct vm_area_struct *vma, unsigned long from } #endif +#include <linux/mm.h> +#include <asm/page.h> + +#if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15))) +#define DRM_ODD_MM_COMPAT +#endif + + + +/* + * Flush relevant caches and clear a VMA structure so that page references + * will cause a page fault. Don't flush tlbs. + */ + +extern void drm_clear_vma(struct vm_area_struct *vma, + unsigned long addr, unsigned long end); + +/* + * Return the PTE protection map entries for the VMA flags given by + * flags. This is a functional interface to the kernel's protection map. + */ + +extern pgprot_t vm_get_page_prot(unsigned long vm_flags); + +/* + * These are similar to the current kernel gatt pages allocator, only that we + * want a struct page pointer instead of a virtual address. This allows for pages + * that are not in the kernel linear map. + */ + +#define drm_alloc_gatt_pages(order) ({ \ + void *_virt = alloc_gatt_pages(order); \ + ((_virt) ? virt_to_page(_virt) : NULL);}) +#define drm_free_gatt_pages(pages, order) free_gatt_pages(page_address(pages), order) + +#if defined(CONFIG_X86) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)) + +/* + * These are too slow in earlier kernels. + */ + +extern int drm_unmap_page_from_agp(struct page *page); +extern int drm_map_page_into_agp(struct page *page); + +#define map_page_into_agp drm_map_page_into_agp +#define unmap_page_from_agp drm_unmap_page_from_agp +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) + +/* + * Hopefully, real NOPAGE_RETRY functionality will be in 2.6.19. + * For now, just return a dummy page that we've allocated out of + * static space. The page will be put by do_nopage() since we've already + * filled out the pte. + */ + +struct fault_data { + struct vm_area_struct *vma; + unsigned long address; + pgoff_t pgoff; + unsigned int flags; + + int type; +}; + +extern struct page *get_nopage_retry(void); +extern void free_nopage_retry(void); + +#define NOPAGE_REFAULT get_nopage_retry() + +extern int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, pgprot_t pgprot); + +extern struct page *drm_vm_ttm_nopage(struct vm_area_struct *vma, + unsigned long address, + int *type); + +extern struct page *drm_vm_ttm_fault(struct vm_area_struct *vma, + struct fault_data *data); + +#endif + +#ifdef DRM_ODD_MM_COMPAT + +struct drm_ttm; + + +/* + * Add a vma to the ttm vma list, and the + * process mm pointer to the ttm mm list. Needs the ttm mutex. + */ + +extern int drm_ttm_add_vma(struct drm_ttm * ttm, + struct vm_area_struct *vma); +/* + * Delete a vma and the corresponding mm pointer from the + * ttm lists. Needs the ttm mutex. + */ +extern void drm_ttm_delete_vma(struct drm_ttm * ttm, + struct vm_area_struct *vma); + +/* + * Attempts to lock all relevant mmap_sems for a ttm, while + * not releasing the ttm mutex. May return -EAGAIN to avoid + * deadlocks. In that case the caller shall release the ttm mutex, + * schedule() and try again. + */ + +extern int drm_ttm_lock_mm(struct drm_ttm * ttm); + +/* + * Unlock all relevant mmap_sems for a ttm. + */ +extern void drm_ttm_unlock_mm(struct drm_ttm * ttm); + +/* + * If the ttm was bound to the aperture, this function shall be called + * with all relevant mmap sems held. It deletes the flag VM_PFNMAP from all + * vmas mapping this ttm. This is needed just after unmapping the ptes of + * the vma, otherwise the do_nopage() function will bug :(. The function + * releases the mmap_sems for this ttm. + */ + +extern void drm_ttm_finish_unmap(struct drm_ttm *ttm); + +/* + * Remap all vmas of this ttm using io_remap_pfn_range. We cannot + * fault these pfns in, because the first one will set the vma VM_PFNMAP + * flag, which will make the next fault bug in do_nopage(). The function + * releases the mmap_sems for this ttm. + */ + +extern int drm_ttm_remap_bound(struct drm_ttm *ttm); + + +/* + * Remap a vma for a bound ttm. Call with the ttm mutex held and + * the relevant mmap_sem locked. + */ +extern int drm_ttm_map_bound(struct vm_area_struct *vma); + +#endif #endif diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c index 228c8b89..75c89c1c 100644 --- a/linux-core/drm_drv.c +++ b/linux-core/drm_drv.c @@ -119,12 +119,17 @@ static drm_ioctl_desc_t drm_ioctls[] = { [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0}, + [DRM_IOCTL_NR(DRM_IOCTL_FENCE)] = {drm_fence_ioctl, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_IOCTL_BUFOBJ)] = {drm_bo_ioctl, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_IOCTL_MM_INIT)] = {drm_mm_init_ioctl, + DRM_AUTH }, [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, }; #define DRIVER_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) + /** * Take down the DRM device. * @@ -143,6 +148,11 @@ int drm_lastclose(drm_device_t * dev) DRM_DEBUG("\n"); + if (drm_bo_driver_finish(dev)) { + DRM_ERROR("DRM memory manager still busy. " + "System is unstable. Please reboot.\n"); + } + if (dev->driver->lastclose) dev->driver->lastclose(dev); DRM_DEBUG("driver lastclose completed\n"); @@ -218,7 +228,7 @@ int drm_lastclose(drm_device_t * dev) if (dev->vmalist) { for (vma = dev->vmalist; vma; vma = vma_next) { vma_next = vma->next; - drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); + drm_ctl_free(vma, sizeof(*vma), DRM_MEM_VMAS); } dev->vmalist = NULL; } @@ -256,6 +266,7 @@ int drm_lastclose(drm_device_t * dev) dev->lock.filp = NULL; wake_up_interruptible(&dev->lock.lock_queue); } + dev->dev_mapping = NULL; mutex_unlock(&dev->struct_mutex); DRM_DEBUG("lastclose completed\n"); @@ -360,11 +371,14 @@ static void drm_cleanup(drm_device_t * dev) } drm_lastclose(dev); + drm_fence_manager_takedown(dev); if (dev->maplist) { drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); dev->maplist = NULL; drm_ht_remove(&dev->map_hash); + drm_mm_takedown(&dev->offset_manager); + drm_ht_remove(&dev->object_hash); } if (!drm_fb_loaded) @@ -419,6 +433,9 @@ void drm_exit(struct drm_driver *driver) } } else pci_unregister_driver(&driver->pci_driver); +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) + free_nopage_retry(); +#endif DRM_INFO("Module unloaded\n"); } EXPORT_SYMBOL(drm_exit); @@ -429,10 +446,60 @@ static struct file_operations drm_stub_fops = { .open = drm_stub_open }; +static int drm_create_memory_caches(void) +{ + drm_cache.mm = kmem_cache_create("drm_mm_node_t", + sizeof(drm_mm_node_t), + 0, + SLAB_HWCACHE_ALIGN, + NULL,NULL); + if (!drm_cache.mm) + return -ENOMEM; + + drm_cache.fence_object= kmem_cache_create("drm_fence_object_t", + sizeof(drm_fence_object_t), + 0, + SLAB_HWCACHE_ALIGN, + NULL,NULL); + if (!drm_cache.fence_object) + return -ENOMEM; + + return 0; +} + +static void drm_free_mem_cache(kmem_cache_t *cache, + const char *name) +{ + if (!cache) + return; + if (kmem_cache_destroy(cache)) { + DRM_ERROR("Warning! DRM is leaking %s memory.\n", + name); + } +} + +static void drm_free_memory_caches(void ) +{ + + drm_free_mem_cache(drm_cache.fence_object, "fence object"); + drm_cache.fence_object = NULL; + drm_free_mem_cache(drm_cache.mm, "memory manager block"); + drm_cache.mm = NULL; +} + + static int __init drm_core_init(void) { - int ret = -ENOMEM; + int ret; + struct sysinfo si; + + si_meminfo(&si); + drm_init_memctl(si.totalram/2, si.totalram*3/4); + ret = drm_create_memory_caches(); + if (ret) + goto err_p1; + ret = -ENOMEM; drm_cards_limit = (drm_cards_limit < DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1); drm_heads = drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB); @@ -468,11 +535,13 @@ err_p2: unregister_chrdev(DRM_MAJOR, "drm"); drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); err_p1: + drm_free_memory_caches(); return ret; } static void __exit drm_core_exit(void) { + drm_free_memory_caches(); remove_proc_entry("dri", NULL); drm_sysfs_destroy(drm_class); @@ -549,14 +618,19 @@ int drm_ioctl(struct inode *inode, struct file *filp, current->pid, cmd, nr, (long)old_encode_dev(priv->head->device), priv->authenticated); - if (nr < DRIVER_IOCTL_COUNT) + if (nr >= DRIVER_IOCTL_COUNT && + (nr < DRM_COMMAND_BASE || nr >= DRM_COMMAND_END)) + goto err_i1; + if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) + && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) + ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; + else if (nr >= DRM_COMMAND_END || nr < DRM_COMMAND_BASE) ioctl = &drm_ioctls[nr]; - else if ((nr >= DRM_COMMAND_BASE) - && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) - ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; - else + else goto err_i1; + + func = ioctl->func; if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) /* Local override? */ func = dev->driver->dma_ioctl; diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c new file mode 100644 index 00000000..aa382046 --- /dev/null +++ b/linux-core/drm_fence.c @@ -0,0 +1,617 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" + +/* + * Typically called by the IRQ handler. + */ + +void drm_fence_handler(drm_device_t * dev, uint32_t sequence, uint32_t type) +{ + int wake = 0; + uint32_t diff; + uint32_t relevant; + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + struct list_head *list, *prev; + drm_fence_object_t *fence; + int found = 0; + + if (list_empty(&fm->ring)) + return; + + list_for_each_entry(fence, &fm->ring, ring) { + diff = (sequence - fence->sequence) & driver->sequence_mask; + if (diff > driver->wrap_diff) { + found = 1; + break; + } + } + + list = (found) ? fence->ring.prev : fm->ring.prev; + prev = list->prev; + + for (; list != &fm->ring; list = prev, prev = list->prev) { + fence = list_entry(list, drm_fence_object_t, ring); + + type |= fence->native_type; + relevant = type & fence->type; + + if ((fence->signaled | relevant) != fence->signaled) { + fence->signaled |= relevant; + DRM_DEBUG("Fence 0x%08lx signaled 0x%08x\n", + fence->base.hash.key, fence->signaled); + fence->submitted_flush |= relevant; + wake = 1; + } + + relevant = fence->flush_mask & + ~(fence->signaled | fence->submitted_flush); + + if (relevant) { + fm->pending_flush |= relevant; + fence->submitted_flush = fence->flush_mask; + } + + if (!(fence->type & ~fence->signaled)) { + DRM_DEBUG("Fence completely signaled 0x%08lx\n", + fence->base.hash.key); + list_del_init(&fence->ring); + } + + } + + if (wake) { + DRM_WAKEUP(&fm->fence_queue); + } +} + +EXPORT_SYMBOL(drm_fence_handler); + +static void drm_fence_unring(drm_device_t * dev, struct list_head *ring) +{ + drm_fence_manager_t *fm = &dev->fm; + unsigned long flags; + + write_lock_irqsave(&fm->lock, flags); + list_del_init(ring); + write_unlock_irqrestore(&fm->lock, flags); +} + +void drm_fence_usage_deref_locked(drm_device_t * dev, + drm_fence_object_t * fence) +{ + drm_fence_manager_t *fm = &dev->fm; + + if (atomic_dec_and_test(&fence->usage)) { + drm_fence_unring(dev, &fence->ring); + DRM_DEBUG("Destroyed a fence object 0x%08lx\n", + fence->base.hash.key); + atomic_dec(&fm->count); + drm_ctl_cache_free(drm_cache.fence_object, sizeof(*fence), + fence); + } +} + +void drm_fence_usage_deref_unlocked(drm_device_t * dev, + drm_fence_object_t * fence) +{ + drm_fence_manager_t *fm = &dev->fm; + + if (atomic_dec_and_test(&fence->usage)) { + mutex_lock(&dev->struct_mutex); + if (atomic_read(&fence->usage) == 0) { + drm_fence_unring(dev, &fence->ring); + atomic_dec(&fm->count); + drm_ctl_cache_free(drm_cache.fence_object, + sizeof(*fence), fence); + } + mutex_unlock(&dev->struct_mutex); + } +} + +static void drm_fence_object_destroy(drm_file_t * priv, + drm_user_object_t * base) +{ + drm_device_t *dev = priv->head->dev; + drm_fence_object_t *fence = + drm_user_object_entry(base, drm_fence_object_t, base); + + drm_fence_usage_deref_locked(dev, fence); +} + +static int fence_signaled(drm_device_t * dev, volatile + drm_fence_object_t * fence, + uint32_t mask, int poke_flush) +{ + unsigned long flags; + int signaled; + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + + if (poke_flush) + driver->poke_flush(dev); + read_lock_irqsave(&fm->lock, flags); + signaled = + (fence->type & mask & fence->signaled) == (fence->type & mask); + read_unlock_irqrestore(&fm->lock, flags); + + return signaled; +} + +static void drm_fence_flush_exe(drm_fence_manager_t * fm, + drm_fence_driver_t * driver, uint32_t sequence) +{ + uint32_t diff; + + if (!fm->pending_exe_flush) { + volatile struct list_head *list; + + /* + * Last_exe_flush is invalid. Find oldest sequence. + */ + +/* list = fm->fence_types[_DRM_FENCE_TYPE_EXE];*/ + list = &fm->ring; + if (list->next == &fm->ring) { + return; + } else { + drm_fence_object_t *fence = + list_entry(list->next, drm_fence_object_t, ring); + fm->last_exe_flush = (fence->sequence - 1) & + driver->sequence_mask; + } + diff = (sequence - fm->last_exe_flush) & driver->sequence_mask; + if (diff >= driver->wrap_diff) + return; + fm->exe_flush_sequence = sequence; + fm->pending_exe_flush = 1; + } else { + diff = + (sequence - fm->exe_flush_sequence) & driver->sequence_mask; + if (diff < driver->wrap_diff) { + fm->exe_flush_sequence = sequence; + } + } +} + +int drm_fence_object_signaled(volatile drm_fence_object_t * fence, + uint32_t type) +{ + return ((fence->signaled & type) == type); +} + +int drm_fence_object_flush(drm_device_t * dev, + volatile drm_fence_object_t * fence, uint32_t type) +{ + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + unsigned long flags; + + if (type & ~fence->type) { + DRM_ERROR("Flush trying to extend fence type, " + "0x%x, 0x%x\n", type, fence->type); + return -EINVAL; + } + + write_lock_irqsave(&fm->lock, flags); + fence->flush_mask |= type; + if (fence->submitted_flush == fence->signaled) { + if ((fence->type & DRM_FENCE_TYPE_EXE) && + !(fence->submitted_flush & DRM_FENCE_TYPE_EXE)) { + drm_fence_flush_exe(fm, driver, fence->sequence); + fence->submitted_flush |= DRM_FENCE_TYPE_EXE; + } else { + fm->pending_flush |= (fence->flush_mask & + ~fence->submitted_flush); + fence->submitted_flush = fence->flush_mask; + } + } + write_unlock_irqrestore(&fm->lock, flags); + driver->poke_flush(dev); + return 0; +} + +/* + * Make sure old fence objects are signaled before their fence sequences are + * wrapped around and reused. + */ + +void drm_fence_flush_old(drm_device_t * dev, uint32_t sequence) +{ + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + uint32_t old_sequence; + unsigned long flags; + drm_fence_object_t *fence; + uint32_t diff; + + mutex_lock(&dev->struct_mutex); + read_lock_irqsave(&fm->lock, flags); + if (fm->ring.next == &fm->ring) { + read_unlock_irqrestore(&fm->lock, flags); + mutex_unlock(&dev->struct_mutex); + return; + } + old_sequence = (sequence - driver->flush_diff) & driver->sequence_mask; + fence = list_entry(fm->ring.next, drm_fence_object_t, ring); + atomic_inc(&fence->usage); + mutex_unlock(&dev->struct_mutex); + diff = (old_sequence - fence->sequence) & driver->sequence_mask; + read_unlock_irqrestore(&fm->lock, flags); + if (diff < driver->wrap_diff) { + drm_fence_object_flush(dev, fence, fence->type); + } + drm_fence_usage_deref_unlocked(dev, fence); +} + +EXPORT_SYMBOL(drm_fence_flush_old); + +int drm_fence_object_wait(drm_device_t * dev, + volatile drm_fence_object_t * fence, + int lazy, int ignore_signals, uint32_t mask) +{ + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + int ret = 0; + unsigned long _end; + int signaled; + + if (mask & ~fence->type) { + DRM_ERROR("Wait trying to extend fence type" + " 0x%08x 0x%08x\n", mask, fence->type); + return -EINVAL; + } + + if (fence_signaled(dev, fence, mask, 0)) + return 0; + + _end = jiffies + 3 * DRM_HZ; + + drm_fence_object_flush(dev, fence, mask); + + if (lazy && driver->lazy_capable) { + + do { + DRM_WAIT_ON(ret, fm->fence_queue, 3 * DRM_HZ, + fence_signaled(dev, fence, mask, 1)); + if (time_after_eq(jiffies, _end)) + break; + } while (ret == -EINTR && ignore_signals); + if (time_after_eq(jiffies, _end) && (ret != 0)) + ret = -EBUSY; + if (ret) { + if (ret == -EBUSY) { + DRM_ERROR("Fence timout. GPU lockup.\n"); + } + return ((ret == -EINTR) ? -EAGAIN : ret); + } + } else if ((fence->class == 0) && (mask & DRM_FENCE_TYPE_EXE) && + driver->lazy_capable) { + + /* + * We use IRQ wait for EXE fence if available to gain + * CPU in some cases. + */ + + do { + DRM_WAIT_ON(ret, fm->fence_queue, 3 * DRM_HZ, + fence_signaled(dev, fence, + DRM_FENCE_TYPE_EXE, 1)); + if (time_after_eq(jiffies, _end)) + break; + } while (ret == -EINTR && ignore_signals); + if (time_after_eq(jiffies, _end) && (ret != 0)) + ret = -EBUSY; + if (ret) + return ((ret == -EINTR) ? -EAGAIN : ret); + } + + if (fence_signaled(dev, fence, mask, 0)) + return 0; + + /* + * Avoid kernel-space busy-waits. + */ +#if 1 + if (!ignore_signals) + return -EAGAIN; +#endif + do { + schedule(); + signaled = fence_signaled(dev, fence, mask, 1); + } while (!signaled && !time_after_eq(jiffies, _end)); + + if (!signaled) + return -EBUSY; + + return 0; +} + +int drm_fence_object_emit(drm_device_t * dev, drm_fence_object_t * fence, + uint32_t fence_flags, uint32_t type) +{ + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + unsigned long flags; + uint32_t sequence; + uint32_t native_type; + int ret; + + drm_fence_unring(dev, &fence->ring); + ret = driver->emit(dev, fence_flags, &sequence, &native_type); + if (ret) + return ret; + + write_lock_irqsave(&fm->lock, flags); + fence->type = type; + fence->flush_mask = 0x00; + fence->submitted_flush = 0x00; + fence->signaled = 0x00; + fence->sequence = sequence; + fence->native_type = native_type; + list_add_tail(&fence->ring, &fm->ring); + write_unlock_irqrestore(&fm->lock, flags); + return 0; +} + +static int drm_fence_object_init(drm_device_t * dev, uint32_t type, + uint32_t fence_flags, + drm_fence_object_t * fence) +{ + int ret = 0; + unsigned long flags; + drm_fence_manager_t *fm = &dev->fm; + + mutex_lock(&dev->struct_mutex); + atomic_set(&fence->usage, 1); + mutex_unlock(&dev->struct_mutex); + + write_lock_irqsave(&fm->lock, flags); + INIT_LIST_HEAD(&fence->ring); + fence->class = 0; + fence->type = type; + fence->flush_mask = 0; + fence->submitted_flush = 0; + fence->signaled = 0; + fence->sequence = 0; + write_unlock_irqrestore(&fm->lock, flags); + if (fence_flags & DRM_FENCE_FLAG_EMIT) { + ret = drm_fence_object_emit(dev, fence, fence_flags, type); + } + return ret; +} + +int drm_fence_add_user_object(drm_file_t * priv, drm_fence_object_t * fence, + int shareable) +{ + drm_device_t *dev = priv->head->dev; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_add_user_object(priv, &fence->base, shareable); + mutex_unlock(&dev->struct_mutex); + if (ret) + return ret; + fence->base.type = drm_fence_type; + fence->base.remove = &drm_fence_object_destroy; + DRM_DEBUG("Fence 0x%08lx created\n", fence->base.hash.key); + return 0; +} + +EXPORT_SYMBOL(drm_fence_add_user_object); + +int drm_fence_object_create(drm_device_t * dev, uint32_t type, + unsigned flags, drm_fence_object_t ** c_fence) +{ + drm_fence_object_t *fence; + int ret; + drm_fence_manager_t *fm = &dev->fm; + + fence = drm_ctl_cache_alloc(drm_cache.fence_object, + sizeof(*fence), GFP_KERNEL); + if (!fence) + return -ENOMEM; + ret = drm_fence_object_init(dev, type, flags, fence); + if (ret) { + drm_fence_usage_deref_unlocked(dev, fence); + return ret; + } + *c_fence = fence; + atomic_inc(&fm->count); + + return 0; +} + +EXPORT_SYMBOL(drm_fence_object_create); + +void drm_fence_manager_init(drm_device_t * dev) +{ + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *fed = dev->driver->fence_driver; + int i; + + fm->lock = RW_LOCK_UNLOCKED; + write_lock(&fm->lock); + INIT_LIST_HEAD(&fm->ring); + fm->pending_flush = 0; + DRM_INIT_WAITQUEUE(&fm->fence_queue); + fm->initialized = 0; + if (fed) { + fm->initialized = 1; + atomic_set(&fm->count, 0); + for (i = 0; i < fed->no_types; ++i) { + fm->fence_types[i] = &fm->ring; + } + } + write_unlock(&fm->lock); +} + +void drm_fence_manager_takedown(drm_device_t * dev) +{ +} + +drm_fence_object_t *drm_lookup_fence_object(drm_file_t * priv, uint32_t handle) +{ + drm_device_t *dev = priv->head->dev; + drm_user_object_t *uo; + drm_fence_object_t *fence; + + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, handle); + if (!uo || (uo->type != drm_fence_type)) { + mutex_unlock(&dev->struct_mutex); + return NULL; + } + fence = drm_user_object_entry(uo, drm_fence_object_t, base); + atomic_inc(&fence->usage); + mutex_unlock(&dev->struct_mutex); + return fence; +} + +int drm_fence_ioctl(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + int ret; + drm_fence_manager_t *fm = &dev->fm; + drm_fence_arg_t arg; + drm_fence_object_t *fence; + drm_user_object_t *uo; + unsigned long flags; + ret = 0; + + if (!fm->initialized) { + DRM_ERROR("The DRM driver does not support fencing.\n"); + return -EINVAL; + } + + DRM_COPY_FROM_USER_IOCTL(arg, (void __user *)data, sizeof(arg)); + switch (arg.op) { + case drm_fence_create: + if (arg.flags & DRM_FENCE_FLAG_EMIT) + LOCK_TEST_WITH_RETURN(dev, filp); + ret = drm_fence_object_create(dev, arg.type, arg.flags, &fence); + if (ret) + return ret; + ret = drm_fence_add_user_object(priv, fence, + arg.flags & + DRM_FENCE_FLAG_SHAREABLE); + if (ret) { + drm_fence_usage_deref_unlocked(dev, fence); + return ret; + } + + /* + * usage > 0. No need to lock dev->struct_mutex; + */ + + atomic_inc(&fence->usage); + arg.handle = fence->base.hash.key; + break; + case drm_fence_destroy: + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, arg.handle); + if (!uo || (uo->type != drm_fence_type) || uo->owner != priv) { + mutex_unlock(&dev->struct_mutex); + return -EINVAL; + } + ret = drm_remove_user_object(priv, uo); + mutex_unlock(&dev->struct_mutex); + return ret; + case drm_fence_reference: + ret = + drm_user_object_ref(priv, arg.handle, drm_fence_type, &uo); + if (ret) + return ret; + fence = drm_lookup_fence_object(priv, arg.handle); + break; + case drm_fence_unreference: + ret = drm_user_object_unref(priv, arg.handle, drm_fence_type); + return ret; + case drm_fence_signaled: + fence = drm_lookup_fence_object(priv, arg.handle); + if (!fence) + return -EINVAL; + break; + case drm_fence_flush: + fence = drm_lookup_fence_object(priv, arg.handle); + if (!fence) + return -EINVAL; + ret = drm_fence_object_flush(dev, fence, arg.type); + break; + case drm_fence_wait: + fence = drm_lookup_fence_object(priv, arg.handle); + if (!fence) + return -EINVAL; + ret = + drm_fence_object_wait(dev, fence, + arg.flags & DRM_FENCE_FLAG_WAIT_LAZY, + 0, arg.type); + break; + case drm_fence_emit: + LOCK_TEST_WITH_RETURN(dev, filp); + fence = drm_lookup_fence_object(priv, arg.handle); + if (!fence) + return -EINVAL; + ret = drm_fence_object_emit(dev, fence, arg.flags, arg.type); + break; + case drm_fence_buffers: + if (!dev->bm.initialized) { + DRM_ERROR("Buffer object manager is not initialized\n"); + return -EINVAL; + } + LOCK_TEST_WITH_RETURN(dev, filp); + ret = drm_fence_buffer_objects(priv, NULL, arg.flags, + NULL, &fence); + if (ret) + return ret; + ret = drm_fence_add_user_object(priv, fence, + arg.flags & + DRM_FENCE_FLAG_SHAREABLE); + if (ret) + return ret; + atomic_inc(&fence->usage); + arg.handle = fence->base.hash.key; + break; + default: + return -EINVAL; + } + read_lock_irqsave(&fm->lock, flags); + arg.class = fence->class; + arg.type = fence->type; + arg.signaled = fence->signaled; + read_unlock_irqrestore(&fm->lock, flags); + drm_fence_usage_deref_unlocked(dev, fence); + + DRM_COPY_TO_USER_IOCTL((void __user *)data, arg, sizeof(arg)); + return ret; +} diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c index 48c77545..b60ced34 100644 --- a/linux-core/drm_fops.c +++ b/linux-core/drm_fops.c @@ -47,6 +47,7 @@ static int drm_setup(drm_device_t * dev) int i; int ret; + if (dev->driver->firstopen) { ret = dev->driver->firstopen(dev); if (ret != 0) @@ -56,6 +57,7 @@ static int drm_setup(drm_device_t * dev) dev->magicfree.next = NULL; /* prebuild the SAREA */ + i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, _DRM_CONTAINS_LOCK, &map); if (i != 0) return i; @@ -156,6 +158,12 @@ int drm_open(struct inode *inode, struct file *filp) } spin_unlock(&dev->count_lock); } + mutex_lock(&dev->struct_mutex); + BUG_ON((dev->dev_mapping != NULL) && + (dev->dev_mapping != inode->i_mapping)); + if (dev->dev_mapping == NULL) + dev->dev_mapping = inode->i_mapping; + mutex_unlock(&dev->struct_mutex); return retcode; } @@ -233,6 +241,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp, int minor = iminor(inode); drm_file_t *priv; int ret; + int i,j; if (filp->f_flags & O_EXCL) return -EBUSY; /* No exclusive opens */ @@ -256,6 +265,22 @@ static int drm_open_helper(struct inode *inode, struct file *filp, priv->authenticated = capable(CAP_SYS_ADMIN); priv->lock_count = 0; + INIT_LIST_HEAD(&priv->user_objects); + INIT_LIST_HEAD(&priv->refd_objects); + + for (i=0; i<_DRM_NO_REF_TYPES; ++i) { + ret = drm_ht_create(&priv->refd_object_hash[i], DRM_FILE_HASH_ORDER); + if (ret) + break; + } + + if (ret) { + for(j=0; j<i; ++j) { + drm_ht_remove(&priv->refd_object_hash[j]); + } + goto out_free; + } + if (dev->driver->open) { ret = dev->driver->open(dev, priv); if (ret < 0) @@ -320,6 +345,53 @@ int drm_fasync(int fd, struct file *filp, int on) } EXPORT_SYMBOL(drm_fasync); +static void drm_object_release(struct file *filp) { + + drm_file_t *priv = filp->private_data; + struct list_head *head; + drm_user_object_t *user_object; + drm_ref_object_t *ref_object; + int i; + + /* + * Free leftover ref objects created by me. Note that we cannot use + * list_for_each() here, as the struct_mutex may be temporarily released + * by the remove_() functions, and thus the lists may be altered. + * Also, a drm_remove_ref_object() will not remove it + * from the list unless its refcount is 1. + */ + + head = &priv->refd_objects; + while (head->next != head) { + ref_object = list_entry(head->next, drm_ref_object_t, list); + drm_remove_ref_object(priv, ref_object); + head = &priv->refd_objects; + } + + /* + * Free leftover user objects created by me. + */ + + head = &priv->user_objects; + while (head->next != head) { + user_object = list_entry(head->next, drm_user_object_t, list); + drm_remove_user_object(priv, user_object); + head = &priv->user_objects; + } + + + + + for(i=0; i<_DRM_NO_REF_TYPES; ++i) { + drm_ht_remove(&priv->refd_object_hash[i]); + } +} + + + + + + /** * Release file. * @@ -354,58 +426,43 @@ int drm_release(struct inode *inode, struct file *filp) current->pid, (long)old_encode_dev(priv->head->device), dev->open_count); - if (priv->lock_count && dev->lock.hw_lock && - _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && - dev->lock.filp == filp) { - DRM_DEBUG("File %p released, freeing lock for context %d\n", - filp, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); - - if (dev->driver->reclaim_buffers_locked) - dev->driver->reclaim_buffers_locked(dev, filp); + if (dev->driver->reclaim_buffers_locked) { + unsigned long _end = jiffies + DRM_HZ*3; - drm_lock_free(dev, &dev->lock.hw_lock->lock, - _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); + do { + retcode = drm_kernel_take_hw_lock(filp); + } while(retcode && !time_after_eq(jiffies,_end)); - /* FIXME: may require heavy-handed reset of - hardware at this point, possibly - processed via a callback to the X - server. */ - } else if (dev->driver->reclaim_buffers_locked && priv->lock_count - && dev->lock.hw_lock) { - /* The lock is required to reclaim buffers */ - DECLARE_WAITQUEUE(entry, current); - - add_wait_queue(&dev->lock.lock_queue, &entry); - for (;;) { - __set_current_state(TASK_INTERRUPTIBLE); - if (!dev->lock.hw_lock) { - /* Device has been unregistered */ - retcode = -EINTR; - break; - } - if (drm_lock_take(&dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT)) { - dev->lock.filp = filp; - dev->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); - break; /* Got lock */ - } - /* Contention */ - schedule(); - if (signal_pending(current)) { - retcode = -ERESTARTSYS; - break; - } - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&dev->lock.lock_queue, &entry); if (!retcode) { dev->driver->reclaim_buffers_locked(dev, filp); + drm_lock_free(dev, &dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT); + _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); + } else { + + /* + * FIXME: This is not a good solution. We should perhaps associate the + * DRM lock with a process context, and check whether the current process + * holds the lock. Then we can run reclaim buffers locked anyway. + */ + + DRM_ERROR("Reclaim buffers locked deadlock.\n"); + DRM_ERROR("This is probably a single thread having multiple\n"); + DRM_ERROR("DRM file descriptors open either dying or " + "closing file descriptors\n"); + DRM_ERROR("while having the lock. I will not reclaim buffers.\n"); + DRM_ERROR("Locking context is 0x%08x\n", + _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); } + } else if (drm_i_have_hw_lock(filp)) { + DRM_DEBUG("File %p released, freeing lock for context %d\n", + filp, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); + + drm_lock_free(dev, &dev->lock.hw_lock->lock, + _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); } + if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && !dev->driver->reclaim_buffers_locked) { dev->driver->reclaim_buffers(dev, filp); @@ -414,6 +471,7 @@ int drm_release(struct inode *inode, struct file *filp) drm_fasync(-1, filp, 0); mutex_lock(&dev->ctxlist_mutex); + if (dev->ctxlist && (!list_empty(&dev->ctxlist->head))) { drm_ctx_list_t *pos, *n; @@ -435,6 +493,7 @@ int drm_release(struct inode *inode, struct file *filp) mutex_unlock(&dev->ctxlist_mutex); mutex_lock(&dev->struct_mutex); + drm_object_release(filp); if (priv->remove_auth_on_close == 1) { drm_file_t *temp = dev->file_first; while (temp) { diff --git a/linux-core/drm_hashtab.c b/linux-core/drm_hashtab.c index a0b2d680..6f17e114 100644 --- a/linux-core/drm_hashtab.c +++ b/linux-core/drm_hashtab.c @@ -36,25 +36,34 @@ #include "drm_hashtab.h" #include <linux/hash.h> -int drm_ht_create(drm_open_hash_t *ht, unsigned int order) +int drm_ht_create(drm_open_hash_t * ht, unsigned int order) { unsigned int i; ht->size = 1 << order; ht->order = order; ht->fill = 0; - ht->table = vmalloc(ht->size*sizeof(*ht->table)); + ht->table = NULL; + ht->use_vmalloc = ((ht->size * sizeof(*ht->table)) > PAGE_SIZE); + if (!ht->use_vmalloc) { + ht->table = drm_calloc(ht->size, sizeof(*ht->table), + DRM_MEM_HASHTAB); + } + if (!ht->table) { + ht->use_vmalloc = 1; + ht->table = vmalloc(ht->size * sizeof(*ht->table)); + } if (!ht->table) { DRM_ERROR("Out of memory for hash table\n"); return -ENOMEM; } - for (i=0; i< ht->size; ++i) { + for (i = 0; i < ht->size; ++i) { INIT_HLIST_HEAD(&ht->table[i]); } return 0; } -void drm_ht_verbose_list(drm_open_hash_t *ht, unsigned long key) +void drm_ht_verbose_list(drm_open_hash_t * ht, unsigned long key) { drm_hash_item_t *entry; struct hlist_head *h_list; @@ -71,7 +80,7 @@ void drm_ht_verbose_list(drm_open_hash_t *ht, unsigned long key) } } -static struct hlist_node *drm_ht_find_key(drm_open_hash_t *ht, +static struct hlist_node *drm_ht_find_key(drm_open_hash_t * ht, unsigned long key) { drm_hash_item_t *entry; @@ -91,8 +100,7 @@ static struct hlist_node *drm_ht_find_key(drm_open_hash_t *ht, return NULL; } - -int drm_ht_insert_item(drm_open_hash_t *ht, drm_hash_item_t *item) +int drm_ht_insert_item(drm_open_hash_t * ht, drm_hash_item_t * item) { drm_hash_item_t *entry; struct hlist_head *h_list; @@ -123,7 +131,7 @@ int drm_ht_insert_item(drm_open_hash_t *ht, drm_hash_item_t *item) * Just insert an item and return any "bits" bit key that hasn't been * used before. */ -int drm_ht_just_insert_please(drm_open_hash_t *ht, drm_hash_item_t *item, +int drm_ht_just_insert_please(drm_open_hash_t * ht, drm_hash_item_t * item, unsigned long seed, int bits, int shift, unsigned long add) { @@ -138,7 +146,7 @@ int drm_ht_just_insert_please(drm_open_hash_t *ht, drm_hash_item_t *item, ret = drm_ht_insert_item(ht, item); if (ret) unshifted_key = (unshifted_key + 1) & mask; - } while(ret && (unshifted_key != first)); + } while (ret && (unshifted_key != first)); if (ret) { DRM_ERROR("Available key bit space exhausted\n"); @@ -147,8 +155,8 @@ int drm_ht_just_insert_please(drm_open_hash_t *ht, drm_hash_item_t *item, return 0; } -int drm_ht_find_item(drm_open_hash_t *ht, unsigned long key, - drm_hash_item_t **item) +int drm_ht_find_item(drm_open_hash_t * ht, unsigned long key, + drm_hash_item_t ** item) { struct hlist_node *list; @@ -160,7 +168,7 @@ int drm_ht_find_item(drm_open_hash_t *ht, unsigned long key, return 0; } -int drm_ht_remove_key(drm_open_hash_t *ht, unsigned long key) +int drm_ht_remove_key(drm_open_hash_t * ht, unsigned long key) { struct hlist_node *list; @@ -173,18 +181,21 @@ int drm_ht_remove_key(drm_open_hash_t *ht, unsigned long key) return -EINVAL; } -int drm_ht_remove_item(drm_open_hash_t *ht, drm_hash_item_t *item) +int drm_ht_remove_item(drm_open_hash_t * ht, drm_hash_item_t * item) { hlist_del_init(&item->head); ht->fill--; return 0; } -void drm_ht_remove(drm_open_hash_t *ht) +void drm_ht_remove(drm_open_hash_t * ht) { if (ht->table) { - vfree(ht->table); + if (ht->use_vmalloc) + vfree(ht->table); + else + drm_free(ht->table, ht->size * sizeof(*ht->table), + DRM_MEM_HASHTAB); ht->table = NULL; } } - diff --git a/linux-core/drm_hashtab.h b/linux-core/drm_hashtab.h index 40afec05..613091c9 100644 --- a/linux-core/drm_hashtab.h +++ b/linux-core/drm_hashtab.h @@ -47,6 +47,7 @@ typedef struct drm_open_hash{ unsigned int order; unsigned int fill; struct hlist_head *table; + int use_vmalloc; } drm_open_hash_t; diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c index 4d8e4a25..c365c08e 100644 --- a/linux-core/drm_irq.c +++ b/linux-core/drm_irq.c @@ -118,6 +118,7 @@ static int drm_irq_install(drm_device_t * dev) init_waitqueue_head(&dev->vbl_queue); spin_lock_init(&dev->vbl_lock); + spin_lock_init(&dev->tasklet_lock); INIT_LIST_HEAD(&dev->vbl_sigs.head); INIT_LIST_HEAD(&dev->vbl_sigs2.head); diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c index d1b85a15..d11c570e 100644 --- a/linux-core/drm_lock.c +++ b/linux-core/drm_lock.c @@ -35,9 +35,12 @@ #include "drmP.h" +#if 0 static int drm_lock_transfer(drm_device_t * dev, __volatile__ unsigned int *lock, unsigned int context); +#endif + static int drm_notifier(void *priv); /** @@ -181,12 +184,9 @@ int drm_unlock(struct inode *inode, struct file *filp, if (dev->driver->kernel_context_switch_unlock) dev->driver->kernel_context_switch_unlock(dev); else { - drm_lock_transfer(dev, &dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT); - if (drm_lock_free(dev, &dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT)) { - DRM_ERROR("\n"); + lock.context)) { + /* FIXME: Should really bail out here. */ } } @@ -212,7 +212,7 @@ int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context) if (old & _DRM_LOCK_HELD) new = old | _DRM_LOCK_CONT; else - new = context | _DRM_LOCK_HELD; + new = context | _DRM_LOCK_HELD | _DRM_LOCK_CONT; prev = cmpxchg(lock, old, new); } while (prev != old); if (_DRM_LOCKING_CONTEXT(old) == context) { @@ -224,13 +224,14 @@ int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context) return 0; } } - if (new == (context | _DRM_LOCK_HELD)) { + if (new == (context | _DRM_LOCK_HELD | _DRM_LOCK_CONT)) { /* Have lock */ return 1; } return 0; } +#if 0 /** * This takes a lock forcibly and hands it to context. Should ONLY be used * inside *_unlock to give lock to kernel before calling *_dma_schedule. @@ -257,6 +258,7 @@ static int drm_lock_transfer(drm_device_t * dev, } while (prev != old); return 1; } +#endif /** * Free lock. @@ -274,12 +276,12 @@ int drm_lock_free(drm_device_t * dev, { unsigned int old, new, prev; - dev->lock.filp = NULL; do { old = *lock; - new = 0; + new = _DRM_LOCKING_CONTEXT(old); prev = cmpxchg(lock, old, new); } while (prev != old); + if (_DRM_LOCK_IS_HELD(old) && _DRM_LOCKING_CONTEXT(old) != context) { DRM_ERROR("%d freed heavyweight lock held by %d\n", context, _DRM_LOCKING_CONTEXT(old)); @@ -319,3 +321,66 @@ static int drm_notifier(void *priv) } while (prev != old); return 0; } + +/* + * Can be used by drivers to take the hardware lock if necessary. + * (Waiting for idle before reclaiming buffers etc.) + */ + +int drm_i_have_hw_lock(struct file *filp) +{ + DRM_DEVICE; + + return (priv->lock_count && dev->lock.hw_lock && + _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && + dev->lock.filp == filp); +} + +EXPORT_SYMBOL(drm_i_have_hw_lock); + +int drm_kernel_take_hw_lock(struct file *filp) +{ + DRM_DEVICE; + + int ret = 0; + unsigned long _end = jiffies + 3*DRM_HZ; + + if (!drm_i_have_hw_lock(filp)) { + + DECLARE_WAITQUEUE(entry, current); + + add_wait_queue(&dev->lock.lock_queue, &entry); + for (;;) { + __set_current_state(TASK_INTERRUPTIBLE); + if (!dev->lock.hw_lock) { + /* Device has been unregistered */ + ret = -EINTR; + break; + } + if (drm_lock_take(&dev->lock.hw_lock->lock, + DRM_KERNEL_CONTEXT)) { + dev->lock.filp = filp; + dev->lock.lock_time = jiffies; + atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); + break; /* Got lock */ + } + /* Contention */ + if (time_after_eq(jiffies,_end)) { + ret = -EBUSY; + break; + } + + schedule_timeout(1); + if (signal_pending(current)) { + ret = -ERESTARTSYS; + break; + } + } + __set_current_state(TASK_RUNNING); + remove_wait_queue(&dev->lock.lock_queue, &entry); + } + return ret; +} + +EXPORT_SYMBOL(drm_kernel_take_hw_lock); + diff --git a/linux-core/drm_memory.c b/linux-core/drm_memory.c index 9125cd47..ba65136a 100644 --- a/linux-core/drm_memory.c +++ b/linux-core/drm_memory.c @@ -37,6 +37,75 @@ #include <linux/highmem.h> #include "drmP.h" +static struct { + spinlock_t lock; + drm_u64_t cur_used; + drm_u64_t low_threshold; + drm_u64_t high_threshold; +} drm_memctl = { + .lock = SPIN_LOCK_UNLOCKED +}; + +static inline size_t drm_size_align(size_t size) { + + register size_t tmpSize = 4; + if (size > PAGE_SIZE) + return PAGE_ALIGN(size); + + while(tmpSize < size) + tmpSize <<= 1; + + return (size_t) tmpSize; +} + +int drm_alloc_memctl(size_t size) +{ + int ret; + unsigned long a_size = drm_size_align(size); + + spin_lock(&drm_memctl.lock); + ret = ((drm_memctl.cur_used + a_size) > drm_memctl.high_threshold) ? + -ENOMEM : 0; + if (!ret) + drm_memctl.cur_used += a_size; + spin_unlock(&drm_memctl.lock); + return ret; +} +EXPORT_SYMBOL(drm_alloc_memctl); + +void drm_free_memctl(size_t size) +{ + unsigned long a_size = drm_size_align(size); + + spin_lock(&drm_memctl.lock); + drm_memctl.cur_used -= a_size; + spin_unlock(&drm_memctl.lock); +} +EXPORT_SYMBOL(drm_free_memctl); + +void drm_query_memctl(drm_u64_t *cur_used, + drm_u64_t *low_threshold, + drm_u64_t *high_threshold) +{ + spin_lock(&drm_memctl.lock); + *cur_used = drm_memctl.cur_used; + *low_threshold = drm_memctl.low_threshold; + *high_threshold = drm_memctl.high_threshold; + spin_unlock(&drm_memctl.lock); +} +EXPORT_SYMBOL(drm_query_memctl); + +void drm_init_memctl(size_t p_low_threshold, + size_t p_high_threshold) +{ + spin_lock(&drm_memctl.lock); + drm_memctl.cur_used = 0; + drm_memctl.low_threshold = p_low_threshold << PAGE_SHIFT; + drm_memctl.high_threshold = p_high_threshold << PAGE_SHIFT; + spin_unlock(&drm_memctl.lock); +} + + #ifndef DEBUG_MEMORY /** No-op. */ diff --git a/linux-core/drm_mm.c b/linux-core/drm_mm.c index 617526bd..4af33bde 100644 --- a/linux-core/drm_mm.c +++ b/linux-core/drm_mm.c @@ -42,6 +42,7 @@ */ #include "drmP.h" +#include <linux/slab.h> drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent, unsigned long size, unsigned alignment) @@ -57,7 +58,10 @@ drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent, parent->free = 0; return parent; } else { - child = (drm_mm_node_t *) drm_alloc(sizeof(*child), DRM_MEM_MM); + + child = (drm_mm_node_t *) + drm_ctl_cache_alloc(drm_cache.mm, sizeof(*child), + GFP_KERNEL); if (!child) return NULL; @@ -67,6 +71,7 @@ drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent, child->free = 0; child->size = size; child->start = parent->start; + child->mm = parent->mm; list_add_tail(&child->ml_entry, &parent->ml_entry); parent->size -= size; @@ -80,9 +85,10 @@ drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent, * Otherwise add to the free stack. */ -void drm_mm_put_block(drm_mm_t * mm, drm_mm_node_t * cur) +void drm_mm_put_block(drm_mm_node_t * cur) { + drm_mm_t *mm = cur->mm; drm_mm_node_t *list_root = &mm->root_node; struct list_head *cur_head = &cur->ml_entry; struct list_head *root_head = &list_root->ml_entry; @@ -105,8 +111,9 @@ void drm_mm_put_block(drm_mm_t * mm, drm_mm_node_t * cur) prev_node->size += next_node->size; list_del(&next_node->ml_entry); list_del(&next_node->fl_entry); - drm_free(next_node, sizeof(*next_node), - DRM_MEM_MM); + drm_ctl_cache_free(drm_cache.mm, + sizeof(*next_node), + next_node); } else { next_node->size += cur->size; next_node->start = cur->start; @@ -119,7 +126,7 @@ void drm_mm_put_block(drm_mm_t * mm, drm_mm_node_t * cur) list_add(&cur->fl_entry, &list_root->fl_entry); } else { list_del(&cur->ml_entry); - drm_free(cur, sizeof(*cur), DRM_MEM_MM); + drm_ctl_cache_free(drm_cache.mm, sizeof(*cur), cur); } } @@ -154,13 +161,23 @@ drm_mm_node_t *drm_mm_search_free(const drm_mm_t * mm, return best; } +int drm_mm_clean(drm_mm_t * mm) +{ + struct list_head *head = &mm->root_node.ml_entry; + + return (head->next->next == head); +} + int drm_mm_init(drm_mm_t * mm, unsigned long start, unsigned long size) { drm_mm_node_t *child; INIT_LIST_HEAD(&mm->root_node.ml_entry); INIT_LIST_HEAD(&mm->root_node.fl_entry); - child = (drm_mm_node_t *) drm_alloc(sizeof(*child), DRM_MEM_MM); + + child = (drm_mm_node_t *) + drm_ctl_cache_alloc(drm_cache.mm, sizeof(*child), GFP_KERNEL); + if (!child) return -ENOMEM; @@ -170,6 +187,7 @@ int drm_mm_init(drm_mm_t * mm, unsigned long start, unsigned long size) child->start = start; child->size = size; child->free = 1; + child->mm = mm; list_add(&child->fl_entry, &mm->root_node.fl_entry); list_add(&child->ml_entry, &mm->root_node.ml_entry); @@ -194,8 +212,7 @@ void drm_mm_takedown(drm_mm_t * mm) list_del(&entry->fl_entry); list_del(&entry->ml_entry); - - drm_free(entry, sizeof(*entry), DRM_MEM_MM); + drm_ctl_cache_free(drm_cache.mm, sizeof(*entry), entry); } EXPORT_SYMBOL(drm_mm_takedown); diff --git a/linux-core/drm_object.c b/linux-core/drm_object.c new file mode 100644 index 00000000..0157329c --- /dev/null +++ b/linux-core/drm_object.c @@ -0,0 +1,287 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +#include "drmP.h" + +int drm_add_user_object(drm_file_t * priv, drm_user_object_t * item, + int shareable) +{ + drm_device_t *dev = priv->head->dev; + int ret; + + atomic_set(&item->refcount, 1); + item->shareable = shareable; + item->owner = priv; + + ret = drm_ht_just_insert_please(&dev->object_hash, &item->hash, + (unsigned long)item, 32, 0, 0); + if (ret) + return ret; + + list_add_tail(&item->list, &priv->user_objects); + return 0; +} + +drm_user_object_t *drm_lookup_user_object(drm_file_t * priv, uint32_t key) +{ + drm_device_t *dev = priv->head->dev; + drm_hash_item_t *hash; + int ret; + drm_user_object_t *item; + + ret = drm_ht_find_item(&dev->object_hash, key, &hash); + if (ret) { + return NULL; + } + item = drm_hash_entry(hash, drm_user_object_t, hash); + + if (priv != item->owner) { + drm_open_hash_t *ht = &priv->refd_object_hash[_DRM_REF_USE]; + ret = drm_ht_find_item(ht, (unsigned long)item, &hash); + if (ret) { + DRM_ERROR("Object not registered for usage\n"); + return NULL; + } + } + return item; +} + +static void drm_deref_user_object(drm_file_t * priv, drm_user_object_t * item) +{ + drm_device_t *dev = priv->head->dev; + int ret; + + if (atomic_dec_and_test(&item->refcount)) { + ret = drm_ht_remove_item(&dev->object_hash, &item->hash); + BUG_ON(ret); + list_del_init(&item->list); + item->remove(priv, item); + } +} + +int drm_remove_user_object(drm_file_t * priv, drm_user_object_t * item) +{ + if (item->owner != priv) { + DRM_ERROR("Cannot destroy object not owned by you.\n"); + return -EINVAL; + } + item->owner = 0; + item->shareable = 0; + list_del_init(&item->list); + drm_deref_user_object(priv, item); + return 0; +} + +static int drm_object_ref_action(drm_file_t * priv, drm_user_object_t * ro, + drm_ref_t action) +{ + int ret = 0; + + switch (action) { + case _DRM_REF_USE: + atomic_inc(&ro->refcount); + break; + default: + if (!ro->ref_struct_locked) { + break; + } else { + ro->ref_struct_locked(priv, ro, action); + } + } + return ret; +} + +int drm_add_ref_object(drm_file_t * priv, drm_user_object_t * referenced_object, + drm_ref_t ref_action) +{ + int ret = 0; + drm_ref_object_t *item; + drm_open_hash_t *ht = &priv->refd_object_hash[ref_action]; + + if (!referenced_object->shareable && priv != referenced_object->owner) { + DRM_ERROR("Not allowed to reference this object\n"); + return -EINVAL; + } + + /* + * If this is not a usage reference, Check that usage has been registered + * first. Otherwise strange things may happen on destruction. + */ + + if ((ref_action != _DRM_REF_USE) && priv != referenced_object->owner) { + item = + drm_lookup_ref_object(priv, referenced_object, + _DRM_REF_USE); + if (!item) { + DRM_ERROR + ("Object not registered for usage by this client\n"); + return -EINVAL; + } + } + + if (NULL != + (item = + drm_lookup_ref_object(priv, referenced_object, ref_action))) { + atomic_inc(&item->refcount); + return drm_object_ref_action(priv, referenced_object, + ref_action); + } + + item = drm_ctl_calloc(1, sizeof(*item), DRM_MEM_OBJECTS); + if (item == NULL) { + DRM_ERROR("Could not allocate reference object\n"); + return -ENOMEM; + } + + atomic_set(&item->refcount, 1); + item->hash.key = (unsigned long)referenced_object; + ret = drm_ht_insert_item(ht, &item->hash); + item->unref_action = ref_action; + + if (ret) + goto out; + + list_add(&item->list, &priv->refd_objects); + ret = drm_object_ref_action(priv, referenced_object, ref_action); + out: + return ret; +} + +drm_ref_object_t *drm_lookup_ref_object(drm_file_t * priv, + drm_user_object_t * referenced_object, + drm_ref_t ref_action) +{ + drm_hash_item_t *hash; + int ret; + + ret = drm_ht_find_item(&priv->refd_object_hash[ref_action], + (unsigned long)referenced_object, &hash); + if (ret) + return NULL; + + return drm_hash_entry(hash, drm_ref_object_t, hash); +} + +static void drm_remove_other_references(drm_file_t * priv, + drm_user_object_t * ro) +{ + int i; + drm_open_hash_t *ht; + drm_hash_item_t *hash; + drm_ref_object_t *item; + + for (i = _DRM_REF_USE + 1; i < _DRM_NO_REF_TYPES; ++i) { + ht = &priv->refd_object_hash[i]; + while (!drm_ht_find_item(ht, (unsigned long)ro, &hash)) { + item = drm_hash_entry(hash, drm_ref_object_t, hash); + drm_remove_ref_object(priv, item); + } + } +} + +void drm_remove_ref_object(drm_file_t * priv, drm_ref_object_t * item) +{ + int ret; + drm_user_object_t *user_object = (drm_user_object_t *) item->hash.key; + drm_open_hash_t *ht = &priv->refd_object_hash[item->unref_action]; + drm_ref_t unref_action; + + unref_action = item->unref_action; + if (atomic_dec_and_test(&item->refcount)) { + ret = drm_ht_remove_item(ht, &item->hash); + BUG_ON(ret); + list_del_init(&item->list); + if (unref_action == _DRM_REF_USE) + drm_remove_other_references(priv, user_object); + drm_ctl_free(item, sizeof(*item), DRM_MEM_OBJECTS); + } + + switch (unref_action) { + case _DRM_REF_USE: + drm_deref_user_object(priv, user_object); + break; + default: + BUG_ON(!user_object->unref); + user_object->unref(priv, user_object, unref_action); + break; + } + +} + +int drm_user_object_ref(drm_file_t * priv, uint32_t user_token, + drm_object_type_t type, drm_user_object_t ** object) +{ + drm_device_t *dev = priv->head->dev; + drm_user_object_t *uo; + int ret; + + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, user_token); + if (!uo || (uo->type != type)) { + ret = -EINVAL; + goto out_err; + } + ret = drm_add_ref_object(priv, uo, _DRM_REF_USE); + if (ret) + goto out_err; + mutex_unlock(&dev->struct_mutex); + *object = uo; + DRM_ERROR("Referenced an object\n"); + return 0; + out_err: + mutex_unlock(&dev->struct_mutex); + return ret; +} + +int drm_user_object_unref(drm_file_t * priv, uint32_t user_token, + drm_object_type_t type) +{ + drm_device_t *dev = priv->head->dev; + drm_user_object_t *uo; + drm_ref_object_t *ro; + int ret; + + mutex_lock(&dev->struct_mutex); + uo = drm_lookup_user_object(priv, user_token); + if (!uo || (uo->type != type)) { + ret = -EINVAL; + goto out_err; + } + ro = drm_lookup_ref_object(priv, uo, _DRM_REF_USE); + if (!ro) { + ret = -EINVAL; + goto out_err; + } + drm_remove_ref_object(priv, ro); + mutex_unlock(&dev->struct_mutex); + DRM_ERROR("Unreferenced an object\n"); + return 0; + out_err: + mutex_unlock(&dev->struct_mutex); + return ret; +} diff --git a/linux-core/drm_proc.c b/linux-core/drm_proc.c index 512a8f75..863cacfc 100644 --- a/linux-core/drm_proc.c +++ b/linux-core/drm_proc.c @@ -49,6 +49,8 @@ static int drm_queues_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_bufs_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); +static int drm_objects_info(char *buf, char **start, off_t offset, + int request, int *eof, void *data); #if DRM_DEBUG_CODE static int drm_vma_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); @@ -67,6 +69,7 @@ static struct drm_proc_list { {"clients", drm_clients_info}, {"queues", drm_queues_info}, {"bufs", drm_bufs_info}, + {"objects", drm_objects_info}, #if DRM_DEBUG_CODE {"vma", drm_vma_info}, #endif @@ -238,10 +241,11 @@ static int drm__vm_info(char *buf, char **start, off_t offset, int request, type = "??"; else type = types[map->type]; - DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ", + DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ", i, map->offset, - map->size, type, map->flags, r_list->user_token); + map->size, type, map->flags, + (unsigned long) r_list->user_token); if (map->mtrr < 0) { DRM_PROC_PRINT("none\n"); @@ -418,6 +422,89 @@ static int drm_bufs_info(char *buf, char **start, off_t offset, int request, } /** + * Called when "/proc/dri/.../objects" is read. + * + * \param buf output buffer. + * \param start start of output data. + * \param offset requested start offset. + * \param request requested number of bytes. + * \param eof whether there is no more data to return. + * \param data private data. + * \return number of written bytes. + */ +static int drm__objects_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *) data; + int len = 0; + drm_buffer_manager_t *bm = &dev->bm; + drm_fence_manager_t *fm = &dev->fm; + drm_u64_t used_mem; + drm_u64_t low_mem; + drm_u64_t high_mem; + + + if (offset > DRM_PROC_LIMIT) { + *eof = 1; + return 0; + } + + *start = &buf[offset]; + *eof = 0; + + if (fm->initialized) { + DRM_PROC_PRINT("Number of active fence objects: %d.\n\n", + atomic_read(&fm->count)); + } else { + DRM_PROC_PRINT("Fence objects are not supported by this driver\n\n"); + } + + if (bm->initialized) { + DRM_PROC_PRINT("Number of active buffer objects: %d.\n\n", + atomic_read(&bm->count)); + DRM_PROC_PRINT("Number of locked GATT pages: %lu.\n", bm->cur_pages); + } else { + DRM_PROC_PRINT("Buffer objects are not supported by this driver.\n\n"); + } + + drm_query_memctl(&used_mem, &low_mem, &high_mem); + + if (used_mem > 16*PAGE_SIZE) { + DRM_PROC_PRINT("Used object memory is %lu pages.\n", + (unsigned long) (used_mem >> PAGE_SHIFT)); + } else { + DRM_PROC_PRINT("Used object memory is %lu bytes.\n", + (unsigned long) used_mem); + } + DRM_PROC_PRINT("Soft object memory usage threshold is %lu pages.\n", + (unsigned long) (low_mem >> PAGE_SHIFT)); + DRM_PROC_PRINT("Hard object memory usage threshold is %lu pages.\n", + (unsigned long) (high_mem >> PAGE_SHIFT)); + + DRM_PROC_PRINT("\n"); + + if (len > request + offset) + return request; + *eof = 1; + return len - offset; +} + +/** + * Simply calls _objects_info() while holding the drm_device::struct_mutex lock. + */ +static int drm_objects_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *) data; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm__objects_info(buf, start, offset, request, eof, data); + mutex_unlock(&dev->struct_mutex); + return ret; +} + +/** * Called when "/proc/dri/.../clients" is read. * * \param buf output buffer. @@ -500,7 +587,7 @@ static int drm__vma_info(char *buf, char **start, off_t offset, int request, for (pt = dev->vmalist; pt; pt = pt->next) { if (!(vma = pt->vma)) continue; - DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx", + DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx000", pt->pid, vma->vm_start, vma->vm_end, @@ -510,7 +597,7 @@ static int drm__vma_info(char *buf, char **start, off_t offset, int request, vma->vm_flags & VM_MAYSHARE ? 's' : 'p', vma->vm_flags & VM_LOCKED ? 'l' : '-', vma->vm_flags & VM_IO ? 'i' : '-', - VM_OFFSET(vma)); + vma->vm_pgoff); #if defined(__i386__) pgprot = pgprot_val(vma->vm_page_prot); diff --git a/linux-core/drm_sman.c b/linux-core/drm_sman.c index 425c8233..19a13f3a 100644 --- a/linux-core/drm_sman.c +++ b/linux-core/drm_sman.c @@ -101,10 +101,9 @@ static void *drm_sman_mm_allocate(void *private, unsigned long size, static void drm_sman_mm_free(void *private, void *ref) { - drm_mm_t *mm = (drm_mm_t *) private; drm_mm_node_t *node = (drm_mm_node_t *) ref; - drm_mm_put_block(mm, node); + drm_mm_put_block(node); } static void drm_sman_mm_destroy(void *private) diff --git a/linux-core/drm_stub.c b/linux-core/drm_stub.c index 839cf441..c03a56a1 100644 --- a/linux-core/drm_stub.c +++ b/linux-core/drm_stub.c @@ -54,6 +54,11 @@ drm_head_t **drm_heads; struct drm_sysfs_class *drm_class; struct proc_dir_entry *drm_proc_root; +drm_cache_t drm_cache = +{ .mm = NULL, + .fence_object = NULL +}; + static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver) @@ -66,6 +71,7 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, init_timer(&dev->timer); mutex_init(&dev->struct_mutex); mutex_init(&dev->ctxlist_mutex); + mutex_init(&dev->bm.init_mutex); dev->pdev = pdev; dev->pci_device = pdev->device; @@ -76,15 +82,29 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, #endif dev->irq = pdev->irq; - dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS); - if (dev->maplist == NULL) + if (drm_ht_create(&dev->map_hash, DRM_MAP_HASH_ORDER)) { + drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); return -ENOMEM; - INIT_LIST_HEAD(&dev->maplist->head); - if (drm_ht_create(&dev->map_hash, 12)) { + } + if (drm_mm_init(&dev->offset_manager, DRM_FILE_PAGE_OFFSET_START, + DRM_FILE_PAGE_OFFSET_SIZE)) { drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); + drm_ht_remove(&dev->map_hash); + return -ENOMEM; + } + + if (drm_ht_create(&dev->object_hash, DRM_OBJECT_HASH_ORDER)) { + drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); + drm_ht_remove(&dev->map_hash); + drm_mm_takedown(&dev->offset_manager); return -ENOMEM; } + dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS); + if (dev->maplist == NULL) + return -ENOMEM; + INIT_LIST_HEAD(&dev->maplist->head); + /* the DRM has 6 counters */ dev->counters = 6; dev->types[0] = _DRM_STAT_LOCK; @@ -125,6 +145,7 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, goto error_out_unreg; } + drm_fence_manager_init(dev); return 0; error_out_unreg: diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c new file mode 100644 index 00000000..599589fc --- /dev/null +++ b/linux-core/drm_ttm.c @@ -0,0 +1,498 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +#include "drmP.h" + +/* + * Use kmalloc if possible. Otherwise fall back to vmalloc. + */ + +static void *ttm_alloc(unsigned long size, int type) +{ + void *ret = NULL; + + if (drm_alloc_memctl(size)) + return NULL; + if (size <= PAGE_SIZE) { + ret = drm_alloc(size, type); + } + if (!ret) { + ret = vmalloc(size); + } + if (!ret) { + drm_free_memctl(size); + } + return ret; +} + +static void ttm_free(void *pointer, unsigned long size, int type) +{ + + if ((unsigned long)pointer >= VMALLOC_START && + (unsigned long)pointer <= VMALLOC_END) { + vfree(pointer); + } else { + drm_free(pointer, size, type); + } + drm_free_memctl(size); +} + +/* + * Unmap all vma pages from vmas mapping this ttm. + */ + +static int unmap_vma_pages(drm_ttm_t * ttm) +{ + drm_device_t *dev = ttm->dev; + loff_t offset = ((loff_t) ttm->mapping_offset) << PAGE_SHIFT; + loff_t holelen = ((loff_t) ttm->num_pages) << PAGE_SHIFT; + +#ifdef DRM_ODD_MM_COMPAT + int ret; + ret = drm_ttm_lock_mm(ttm); + if (ret) + return ret; +#endif + unmap_mapping_range(dev->dev_mapping, offset, holelen, 1); +#ifdef DRM_ODD_MM_COMPAT + drm_ttm_finish_unmap(ttm); +#endif + return 0; +} + +/* + * Change caching policy for the linear kernel map + * for range of pages in a ttm. + */ + +static int drm_set_caching(drm_ttm_t * ttm, int noncached) +{ + int i; + struct page **cur_page; + int do_tlbflush = 0; + + if ((ttm->page_flags & DRM_TTM_PAGE_UNCACHED) == noncached) + return 0; + + for (i = 0; i < ttm->num_pages; ++i) { + cur_page = ttm->pages + i; + if (*cur_page) { + if (!PageHighMem(*cur_page)) { + if (noncached) { + map_page_into_agp(*cur_page); + } else { + unmap_page_from_agp(*cur_page); + } + do_tlbflush = 1; + } + } + } + if (do_tlbflush) + flush_agp_mappings(); + + DRM_MASK_VAL(ttm->page_flags, DRM_TTM_PAGE_UNCACHED, noncached); + + return 0; +} + +/* + * Free all resources associated with a ttm. + */ + +int drm_destroy_ttm(drm_ttm_t * ttm) +{ + + int i; + struct page **cur_page; + drm_ttm_backend_t *be; + + if (!ttm) + return 0; + + if (atomic_read(&ttm->vma_count) > 0) { + ttm->destroy = 1; + DRM_ERROR("VMAs are still alive. Skipping destruction.\n"); + return -EBUSY; + } + + DRM_DEBUG("Destroying a ttm\n"); + +#ifdef DRM_TTM_ODD_COMPAT + BUG_ON(!list_empty(&ttm->vma_list)); + BUG_ON(!list_empty(&ttm->p_mm_list)); +#endif + be = ttm->be; + if (be) { + be->destroy(be); + ttm->be = NULL; + } + + if (ttm->pages) { + drm_buffer_manager_t *bm = &ttm->dev->bm; + if (ttm->page_flags & DRM_TTM_PAGE_UNCACHED) + drm_set_caching(ttm, 0); + + for (i = 0; i < ttm->num_pages; ++i) { + cur_page = ttm->pages + i; + if (*cur_page) { +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)) + unlock_page(*cur_page); +#else + ClearPageReserved(*cur_page); +#endif + if (page_count(*cur_page) != 1) { + DRM_ERROR("Erroneous page count. " + "Leaking pages.\n"); + } + if (page_mapped(*cur_page)) { + DRM_ERROR("Erroneous map count. " + "Leaking page mappings.\n"); + } + + /* + * End debugging. + */ + + drm_free_gatt_pages(*cur_page, 0); + drm_free_memctl(PAGE_SIZE); + --bm->cur_pages; + } + } + ttm_free(ttm->pages, ttm->num_pages * sizeof(*ttm->pages), + DRM_MEM_TTM); + ttm->pages = NULL; + } + + drm_ctl_free(ttm, sizeof(*ttm), DRM_MEM_TTM); + return 0; +} + +static int drm_ttm_populate(drm_ttm_t * ttm) +{ + struct page *page; + unsigned long i; + drm_buffer_manager_t *bm; + drm_ttm_backend_t *be; + + if (ttm->state != ttm_unpopulated) + return 0; + + bm = &ttm->dev->bm; + be = ttm->be; + for (i = 0; i < ttm->num_pages; ++i) { + page = ttm->pages[i]; + if (!page) { + if (drm_alloc_memctl(PAGE_SIZE)) { + return -ENOMEM; + } + page = drm_alloc_gatt_pages(0); + if (!page) { + drm_free_memctl(PAGE_SIZE); + return -ENOMEM; + } +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)) + SetPageLocked(page); +#else + SetPageReserved(page); +#endif + ttm->pages[i] = page; + ++bm->cur_pages; + } + } + be->populate(be, ttm->num_pages, ttm->pages); + ttm->state = ttm_unbound; + return 0; +} + +/* + * Initialize a ttm. + */ + +static drm_ttm_t *drm_init_ttm(struct drm_device *dev, unsigned long size) +{ + drm_bo_driver_t *bo_driver = dev->driver->bo_driver; + drm_ttm_t *ttm; + + if (!bo_driver) + return NULL; + + ttm = drm_ctl_calloc(1, sizeof(*ttm), DRM_MEM_TTM); + if (!ttm) + return NULL; + +#ifdef DRM_ODD_MM_COMPAT + INIT_LIST_HEAD(&ttm->p_mm_list); + INIT_LIST_HEAD(&ttm->vma_list); +#endif + + ttm->dev = dev; + atomic_set(&ttm->vma_count, 0); + + ttm->destroy = 0; + ttm->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; + + ttm->page_flags = 0; + + /* + * Account also for AGP module memory usage. + */ + + ttm->pages = ttm_alloc(ttm->num_pages * sizeof(*ttm->pages), + DRM_MEM_TTM); + if (!ttm->pages) { + drm_destroy_ttm(ttm); + DRM_ERROR("Failed allocating page table\n"); + return NULL; + } + memset(ttm->pages, 0, ttm->num_pages * sizeof(*ttm->pages)); + ttm->be = bo_driver->create_ttm_backend_entry(dev); + if (!ttm->be) { + drm_destroy_ttm(ttm); + DRM_ERROR("Failed creating ttm backend entry\n"); + return NULL; + } + ttm->state = ttm_unpopulated; + return ttm; +} + +/* + * Unbind a ttm region from the aperture. + */ + +int drm_evict_ttm(drm_ttm_t * ttm) +{ + drm_ttm_backend_t *be = ttm->be; + int ret; + + switch (ttm->state) { + case ttm_bound: + if (be->needs_ub_cache_adjust(be)) { + ret = unmap_vma_pages(ttm); + if (ret) { + return ret; + } + } + be->unbind(be); + break; + default: + break; + } + ttm->state = ttm_evicted; + return 0; +} + +void drm_fixup_ttm_caching(drm_ttm_t * ttm) +{ + + if (ttm->state == ttm_evicted) { + drm_ttm_backend_t *be = ttm->be; + if (be->needs_ub_cache_adjust(be)) { + drm_set_caching(ttm, 0); + } + ttm->state = ttm_unbound; + } +} + +int drm_unbind_ttm(drm_ttm_t * ttm) +{ + int ret = 0; + + if (ttm->state == ttm_bound) + ret = drm_evict_ttm(ttm); + + if (ret) + return ret; + + drm_fixup_ttm_caching(ttm); + return 0; +} + +int drm_bind_ttm(drm_ttm_t * ttm, int cached, unsigned long aper_offset) +{ + + int ret = 0; + drm_ttm_backend_t *be; + + if (!ttm) + return -EINVAL; + if (ttm->state == ttm_bound) + return 0; + + be = ttm->be; + + ret = drm_ttm_populate(ttm); + if (ret) + return ret; + if (ttm->state == ttm_unbound && !cached) { + ret = unmap_vma_pages(ttm); + if (ret) + return ret; + + drm_set_caching(ttm, DRM_TTM_PAGE_UNCACHED); + } +#ifdef DRM_ODD_MM_COMPAT + else if (ttm->state == ttm_evicted && !cached) { + ret = drm_ttm_lock_mm(ttm); + if (ret) + return ret; + } +#endif + if ((ret = be->bind(be, aper_offset, cached))) { + ttm->state = ttm_evicted; +#ifdef DRM_ODD_MM_COMPAT + if (be->needs_ub_cache_adjust(be)) + drm_ttm_unlock_mm(ttm); +#endif + DRM_ERROR("Couldn't bind backend.\n"); + return ret; + } + + ttm->aper_offset = aper_offset; + ttm->state = ttm_bound; + +#ifdef DRM_ODD_MM_COMPAT + if (be->needs_ub_cache_adjust(be)) { + ret = drm_ttm_remap_bound(ttm); + if (ret) + return ret; + } +#endif + + return 0; +} + +/* + * dev->struct_mutex locked. + */ +static void drm_ttm_object_remove(drm_device_t * dev, drm_ttm_object_t * object) +{ + drm_map_list_t *list = &object->map_list; + drm_local_map_t *map; + + if (list->user_token) + drm_ht_remove_item(&dev->map_hash, &list->hash); + + if (list->file_offset_node) { + drm_mm_put_block(list->file_offset_node); + list->file_offset_node = NULL; + } + + map = list->map; + + if (map) { + drm_ttm_t *ttm = (drm_ttm_t *) map->offset; + if (ttm) { + if (drm_destroy_ttm(ttm) != -EBUSY) { + drm_ctl_free(map, sizeof(*map), DRM_MEM_TTM); + } + } else { + drm_ctl_free(map, sizeof(*map), DRM_MEM_TTM); + } + } + + drm_ctl_free(object, sizeof(*object), DRM_MEM_TTM); +} + +void drm_ttm_object_deref_locked(drm_device_t * dev, drm_ttm_object_t * to) +{ + if (atomic_dec_and_test(&to->usage)) { + drm_ttm_object_remove(dev, to); + } +} + +void drm_ttm_object_deref_unlocked(drm_device_t * dev, drm_ttm_object_t * to) +{ + if (atomic_dec_and_test(&to->usage)) { + mutex_lock(&dev->struct_mutex); + if (atomic_read(&to->usage) == 0) + drm_ttm_object_remove(dev, to); + mutex_unlock(&dev->struct_mutex); + } +} + +/* + * Create a ttm and add it to the drm book-keeping. + * dev->struct_mutex locked. + */ + +int drm_ttm_object_create(drm_device_t * dev, unsigned long size, + uint32_t flags, drm_ttm_object_t ** ttm_object) +{ + drm_ttm_object_t *object; + drm_map_list_t *list; + drm_local_map_t *map; + drm_ttm_t *ttm; + + object = drm_ctl_calloc(1, sizeof(*object), DRM_MEM_TTM); + if (!object) + return -ENOMEM; + object->flags = flags; + list = &object->map_list; + + list->map = drm_ctl_calloc(1, sizeof(*map), DRM_MEM_TTM); + if (!list->map) { + drm_ttm_object_remove(dev, object); + return -ENOMEM; + } + map = list->map; + + ttm = drm_init_ttm(dev, size); + if (!ttm) { + DRM_ERROR("Could not create ttm\n"); + drm_ttm_object_remove(dev, object); + return -ENOMEM; + } + + map->offset = (unsigned long)ttm; + map->type = _DRM_TTM; + map->flags = _DRM_REMOVABLE; + map->size = ttm->num_pages * PAGE_SIZE; + map->handle = (void *)object; + + list->file_offset_node = drm_mm_search_free(&dev->offset_manager, + ttm->num_pages, 0, 0); + if (!list->file_offset_node) { + drm_ttm_object_remove(dev, object); + return -ENOMEM; + } + list->file_offset_node = drm_mm_get_block(list->file_offset_node, + ttm->num_pages, 0); + + list->hash.key = list->file_offset_node->start; + + if (drm_ht_insert_item(&dev->map_hash, &list->hash)) { + drm_ttm_object_remove(dev, object); + return -ENOMEM; + } + + list->user_token = ((drm_u64_t) list->hash.key) << PAGE_SHIFT; + ttm->mapping_offset = list->hash.key; + atomic_set(&object->usage, 1); + *ttm_object = object; + return 0; +} diff --git a/linux-core/drm_ttm.h b/linux-core/drm_ttm.h new file mode 100644 index 00000000..11a13754 --- /dev/null +++ b/linux-core/drm_ttm.h @@ -0,0 +1,145 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#ifndef _DRM_TTM_H +#define _DRM_TTM_H +#define DRM_HAS_TTM + +/* + * The backend GART interface. (In our case AGP). Any similar type of device (PCIE?) + * needs only to implement these functions to be usable with the "TTM" interface. + * The AGP backend implementation lives in drm_agpsupport.c + * basically maps these calls to available functions in agpgart. Each drm device driver gets an + * additional function pointer that creates these types, + * so that the device can choose the correct aperture. + * (Multiple AGP apertures, etc.) + * Most device drivers will let this point to the standard AGP implementation. + */ + +#define DRM_BE_FLAG_NEEDS_FREE 0x00000001 +#define DRM_BE_FLAG_BOUND_CACHED 0x00000002 +#define DRM_BE_FLAG_CBA 0x00000004 + +typedef struct drm_ttm_backend { + unsigned long aperture_base; + void *private; + uint32_t flags; + uint32_t drm_map_type; + int (*needs_ub_cache_adjust) (struct drm_ttm_backend * backend); + int (*populate) (struct drm_ttm_backend * backend, + unsigned long num_pages, struct page ** pages); + void (*clear) (struct drm_ttm_backend * backend); + int (*bind) (struct drm_ttm_backend * backend, + unsigned long offset, int cached); + int (*unbind) (struct drm_ttm_backend * backend); + void (*destroy) (struct drm_ttm_backend * backend); +} drm_ttm_backend_t; + +typedef struct drm_ttm { + struct page **pages; + uint32_t page_flags; + unsigned long num_pages; + unsigned long aper_offset; + atomic_t vma_count; + struct drm_device *dev; + int destroy; + uint32_t mapping_offset; + drm_ttm_backend_t *be; + enum { + ttm_bound, + ttm_evicted, + ttm_unbound, + ttm_unpopulated, + } state; +#ifdef DRM_ODD_MM_COMPAT + struct list_head vma_list; + struct list_head p_mm_list; +#endif + +} drm_ttm_t; + +typedef struct drm_ttm_object { + atomic_t usage; + uint32_t flags; + drm_map_list_t map_list; +} drm_ttm_object_t; + +extern int drm_ttm_object_create(struct drm_device *dev, unsigned long size, + uint32_t flags, + drm_ttm_object_t ** ttm_object); +extern void drm_ttm_object_deref_locked(struct drm_device *dev, + drm_ttm_object_t * to); +extern void drm_ttm_object_deref_unlocked(struct drm_device *dev, + drm_ttm_object_t * to); +extern drm_ttm_object_t *drm_lookup_ttm_object(drm_file_t * priv, + uint32_t handle, + int check_owner); +extern int drm_bind_ttm(drm_ttm_t * ttm, int cached, unsigned long aper_offset); + +extern int drm_unbind_ttm(drm_ttm_t * ttm); + +/* + * Evict a ttm region. Keeps Aperture caching policy. + */ + +extern int drm_evict_ttm(drm_ttm_t * ttm); +extern void drm_fixup_ttm_caching(drm_ttm_t * ttm); + +/* + * Destroy a ttm. The user normally calls drmRmMap or a similar IOCTL to do this, + * which calls this function iff there are no vmas referencing it anymore. Otherwise it is called + * when the last vma exits. + */ + +extern int drm_destroy_ttm(drm_ttm_t * ttm); +extern int drm_ttm_ioctl(DRM_IOCTL_ARGS); + +static __inline__ drm_ttm_t *drm_ttm_from_object(drm_ttm_object_t * to) +{ + return (drm_ttm_t *) to->map_list.map->offset; +} + +#define DRM_MASK_VAL(dest, mask, val) \ + (dest) = ((dest) & ~(mask)) | ((val) & (mask)); + +#define DRM_TTM_MASK_FLAGS ((1 << PAGE_SHIFT) - 1) +#define DRM_TTM_MASK_PFN (0xFFFFFFFFU - DRM_TTM_MASK_FLAGS) + +/* + * Page flags. + */ + +#define DRM_TTM_PAGE_UNCACHED 0x01 +#define DRM_TTM_PAGE_USED 0x02 +#define DRM_TTM_PAGE_BOUND 0x04 +#define DRM_TTM_PAGE_PRESENT 0x08 + +#endif diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c index adff7d1a..ba4b1451 100644 --- a/linux-core/drm_vm.c +++ b/linux-core/drm_vm.c @@ -34,12 +34,42 @@ */ #include "drmP.h" + #if defined(__ia64__) #include <linux/efi.h> #endif static void drm_vm_open(struct vm_area_struct *vma); static void drm_vm_close(struct vm_area_struct *vma); +static void drm_vm_ttm_close(struct vm_area_struct *vma); +static int drm_vm_ttm_open(struct vm_area_struct *vma); +static void drm_vm_ttm_open_wrapper(struct vm_area_struct *vma); + + +pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma) +{ + pgprot_t tmp = vm_get_page_prot(vma->vm_flags); + +#if defined(__i386__) || defined(__x86_64__) + if (boot_cpu_data.x86 > 3 && map_type != _DRM_AGP) { + pgprot_val(tmp) |= _PAGE_PCD; + pgprot_val(tmp) &= ~_PAGE_PWT; + } +#elif defined(__powerpc__) + pgprot_val(tmp) |= _PAGE_NO_CACHE; + if (map->type == _DRM_REGISTERS) + pgprot_val(tmp) |= _PAGE_GUARDED; +#endif +#if defined(__ia64__) + if (efi_range_is_wc(vma->vm_start, vma->vm_end - + vma->vm_start)) + tmp = pgprot_writecombine(tmp); + else + tmp = pgprot_noncached(tmp); +#endif + return tmp; +} + /** * \c nopage method for AGP virtual memory. @@ -70,7 +100,7 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma, if (!dev->agp || !dev->agp->cant_use_aperture) goto vm_nopage_error; - if (drm_ht_find_item(&dev->map_hash, VM_OFFSET(vma), &hash)) + if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash)) goto vm_nopage_error; r_list = drm_hash_entry(hash, drm_map_list_t, hash); @@ -129,6 +159,93 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma, } #endif /* __OS_HAS_AGP */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)) +static +#endif +struct page *drm_vm_ttm_fault(struct vm_area_struct *vma, + struct fault_data *data) +{ + unsigned long address = data->address; + drm_local_map_t *map = (drm_local_map_t *) vma->vm_private_data; + unsigned long page_offset; + struct page *page; + drm_ttm_t *ttm; + drm_buffer_manager_t *bm; + drm_device_t *dev; + unsigned long pfn; + int err; + pgprot_t pgprot; + + if (!map) { + data->type = VM_FAULT_OOM; + return NULL; + } + + if (address > vma->vm_end) { + data->type = VM_FAULT_SIGBUS; + return NULL; + } + + ttm = (drm_ttm_t *) map->offset; + + dev = ttm->dev; + + /* + * Perhaps retry here? + */ + + mutex_lock(&dev->struct_mutex); + drm_fixup_ttm_caching(ttm); + + bm = &dev->bm; + page_offset = (address - vma->vm_start) >> PAGE_SHIFT; + page = ttm->pages[page_offset]; + + if (!page) { + if (drm_alloc_memctl(PAGE_SIZE)) { + data->type = VM_FAULT_OOM; + goto out; + } + page = ttm->pages[page_offset] = drm_alloc_gatt_pages(0); + if (!page) { + drm_free_memctl(PAGE_SIZE); + data->type = VM_FAULT_OOM; + goto out; + } + ++bm->cur_pages; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)) + SetPageLocked(page); +#else + SetPageReserved(page); +#endif + } + + if (ttm->page_flags & DRM_TTM_PAGE_UNCACHED) { + + /* + * FIXME: Check can't map aperture flag. + */ + + pfn = ttm->aper_offset + page_offset + + (ttm->be->aperture_base >> PAGE_SHIFT); + pgprot = drm_io_prot(ttm->be->drm_map_type, vma); + } else { + pfn = page_to_pfn(page); + pgprot = vma->vm_page_prot; + } + + err = vm_insert_pfn(vma, address, pfn, pgprot); + + if (!err || err == -EBUSY) + data->type = VM_FAULT_MINOR; + else + data->type = VM_FAULT_OOM; + out: + mutex_unlock(&dev->struct_mutex); + return NULL; +} + + /** * \c nopage method for shared virtual memory. * @@ -198,7 +315,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma) } else { dev->vmalist = pt->next; } - drm_free(pt, sizeof(*pt), DRM_MEM_VMAS); + drm_ctl_free(pt, sizeof(*pt), DRM_MEM_VMAS); } else { prev = pt; } @@ -243,6 +360,9 @@ static void drm_vm_shm_close(struct vm_area_struct *vma) dmah.size = map->size; __drm_pci_free(dev, &dmah); break; + case _DRM_TTM: + BUG_ON(1); + break; } drm_free(map, sizeof(*map), DRM_MEM_MAPS); } @@ -358,6 +478,7 @@ static struct page *drm_vm_sg_nopage(struct vm_area_struct *vma, return drm_do_vm_sg_nopage(vma, address); } + #else /* LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0) */ static struct page *drm_vm_nopage(struct vm_area_struct *vma, @@ -414,6 +535,20 @@ static struct vm_operations_struct drm_vm_sg_ops = { .close = drm_vm_close, }; +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) +static struct vm_operations_struct drm_vm_ttm_ops = { + .nopage = drm_vm_ttm_nopage, + .open = drm_vm_ttm_open_wrapper, + .close = drm_vm_ttm_close, +}; +#else +static struct vm_operations_struct drm_vm_ttm_ops = { + .fault = drm_vm_ttm_fault, + .open = drm_vm_ttm_open_wrapper, + .close = drm_vm_ttm_close, +}; +#endif + /** * \c open method for shared virtual memory. * @@ -432,7 +567,7 @@ static void drm_vm_open(struct vm_area_struct *vma) vma->vm_start, vma->vm_end - vma->vm_start); atomic_inc(&dev->vma_count); - vma_entry = drm_alloc(sizeof(*vma_entry), DRM_MEM_VMAS); + vma_entry = drm_ctl_alloc(sizeof(*vma_entry), DRM_MEM_VMAS); if (vma_entry) { mutex_lock(&dev->struct_mutex); vma_entry->vma = vma; @@ -443,6 +578,29 @@ static void drm_vm_open(struct vm_area_struct *vma) } } +static int drm_vm_ttm_open(struct vm_area_struct *vma) { + + drm_local_map_t *map = (drm_local_map_t *)vma->vm_private_data; + drm_ttm_t *ttm; + drm_file_t *priv = vma->vm_file->private_data; + drm_device_t *dev = priv->head->dev; + + drm_vm_open(vma); + mutex_lock(&dev->struct_mutex); + ttm = (drm_ttm_t *) map->offset; + atomic_inc(&ttm->vma_count); +#ifdef DRM_ODD_MM_COMPAT + drm_ttm_add_vma(ttm, vma); +#endif + mutex_unlock(&dev->struct_mutex); + return 0; +} + +static void drm_vm_ttm_open_wrapper(struct vm_area_struct *vma) +{ + drm_vm_ttm_open(vma); +} + /** * \c close method for all virtual memory types. * @@ -469,13 +627,42 @@ static void drm_vm_close(struct vm_area_struct *vma) } else { dev->vmalist = pt->next; } - drm_free(pt, sizeof(*pt), DRM_MEM_VMAS); + drm_ctl_free(pt, sizeof(*pt), DRM_MEM_VMAS); break; } } mutex_unlock(&dev->struct_mutex); } + +static void drm_vm_ttm_close(struct vm_area_struct *vma) +{ + drm_local_map_t *map = (drm_local_map_t *) vma->vm_private_data; + drm_ttm_t *ttm; + drm_device_t *dev; + int ret; + + drm_vm_close(vma); + if (map) { + ttm = (drm_ttm_t *) map->offset; + dev = ttm->dev; + mutex_lock(&dev->struct_mutex); +#ifdef DRM_ODD_MM_COMPAT + drm_ttm_delete_vma(ttm, vma); +#endif + if (atomic_dec_and_test(&ttm->vma_count)) { + if (ttm->destroy) { + ret = drm_destroy_ttm(ttm); + BUG_ON(ret); + drm_ctl_free(map, sizeof(*map), DRM_MEM_TTM); + } + } + mutex_unlock(&dev->struct_mutex); + } + return; +} + + /** * mmap DMA memory. * @@ -496,8 +683,8 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma) lock_kernel(); dev = priv->head->dev; dma = dev->dma; - DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n", - vma->vm_start, vma->vm_end, VM_OFFSET(vma)); + DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n", + vma->vm_start, vma->vm_end, vma->vm_pgoff); /* Length must match exact page count */ if (!dma || (length >> PAGE_SHIFT) != dma->page_count) { @@ -572,8 +759,8 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma) unsigned long offset = 0; drm_hash_item_t *hash; - DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n", - vma->vm_start, vma->vm_end, VM_OFFSET(vma)); + DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n", + vma->vm_start, vma->vm_end, vma->vm_pgoff); if (!priv->authenticated) return -EACCES; @@ -582,7 +769,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma) * the AGP mapped at physical address 0 * --BenH. */ - if (!VM_OFFSET(vma) + if (!vma->vm_pgoff #if __OS_HAS_AGP && (!dev->agp || dev->agp->agp_info.device->vendor != PCI_VENDOR_ID_APPLE) @@ -590,7 +777,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma) ) return drm_mmap_dma(filp, vma); - if (drm_ht_find_item(&dev->map_hash, VM_OFFSET(vma), &hash)) { + if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff , &hash)) { DRM_ERROR("Could not find map\n"); return -EINVAL; } @@ -636,27 +823,9 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma) /* fall through to _DRM_FRAME_BUFFER... */ case _DRM_FRAME_BUFFER: case _DRM_REGISTERS: -#if defined(__i386__) || defined(__x86_64__) - if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) { - pgprot_val(vma->vm_page_prot) |= _PAGE_PCD; - pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT; - } -#elif defined(__powerpc__) - pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; - if (map->type == _DRM_REGISTERS) - pgprot_val(vma->vm_page_prot) |= _PAGE_GUARDED; -#endif - vma->vm_flags |= VM_IO; /* not in core dump */ -#if defined(__ia64__) - if (efi_range_is_wc(vma->vm_start, vma->vm_end - - vma->vm_start)) - vma->vm_page_prot = - pgprot_writecombine(vma->vm_page_prot); - else - vma->vm_page_prot = - pgprot_noncached(vma->vm_page_prot); -#endif offset = dev->driver->get_reg_ofs(dev); + vma->vm_flags |= VM_IO; /* not in core dump */ + vma->vm_page_prot = drm_io_prot(map->type, vma); #ifdef __sparc__ if (io_remap_pfn_range(vma, vma->vm_start, (map->offset + offset) >>PAGE_SHIFT, @@ -703,6 +872,20 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma) vma->vm_flags |= VM_RESERVED; #endif break; + case _DRM_TTM: { + vma->vm_ops = &drm_vm_ttm_ops; + vma->vm_private_data = (void *) map; + vma->vm_file = filp; + vma->vm_flags |= VM_RESERVED | VM_IO; +#ifdef DRM_ODD_MM_COMPAT + mutex_lock(&dev->struct_mutex); + drm_ttm_map_bound(vma); + mutex_unlock(&dev->struct_mutex); +#endif + if (drm_vm_ttm_open(vma)) + return -EAGAIN; + return 0; + } default: return -EINVAL; /* This should never happen. */ } diff --git a/linux-core/i915_buffer.c b/linux-core/i915_buffer.c new file mode 100644 index 00000000..c3e54468 --- /dev/null +++ b/linux-core/i915_buffer.c @@ -0,0 +1,66 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" +#include "i915_drm.h" +#include "i915_drv.h" + + +drm_ttm_backend_t *i915_create_ttm_backend_entry(drm_device_t * dev) +{ + return drm_agp_init_ttm(dev, NULL); +} + +int i915_fence_types(uint32_t buffer_flags, uint32_t * class, uint32_t * type) +{ + *class = 0; + if (buffer_flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE)) + *type = 3; + else + *type = 1; + return 0; +} + +int i915_invalidate_caches(drm_device_t * dev, uint32_t flags) +{ + /* + * FIXME: Only emit once per batchbuffer submission. + */ + + uint32_t flush_cmd = MI_NO_WRITE_FLUSH; + + if (flags & DRM_BO_FLAG_READ) + flush_cmd |= MI_READ_FLUSH; + if (flags & DRM_BO_FLAG_EXE) + flush_cmd |= MI_EXE_FLUSH; + + return i915_emit_mi_flush(dev, flush_cmd); +} diff --git a/linux-core/i915_drv.c b/linux-core/i915_drv.c index 209500be..2c5b43d0 100644 --- a/linux-core/i915_drv.c +++ b/linux-core/i915_drv.c @@ -38,6 +38,27 @@ static struct pci_device_id pciidlist[] = { i915_PCI_IDS }; +#ifdef I915_HAVE_FENCE +static drm_fence_driver_t i915_fence_driver = { + .no_types = 2, + .wrap_diff = (1 << 30), + .flush_diff = (1 << 29), + .sequence_mask = 0xffffffffU, + .lazy_capable = 1, + .emit = i915_fence_emit_sequence, + .poke_flush = i915_poke_flush, +}; +#endif +#ifdef I915_HAVE_BUFFER +static drm_bo_driver_t i915_bo_driver = { + .iomap = {NULL, NULL}, + .cached = {1, 1}, + .create_ttm_backend_entry = i915_create_ttm_backend_entry, + .fence_type = i915_fence_types, + .invalidate_caches = i915_invalidate_caches +}; +#endif + static int probe(struct pci_dev *pdev, const struct pci_device_id *ent); static struct drm_driver driver = { /* don't use mtrr's here, the Xserver or user space app should @@ -79,7 +100,12 @@ static struct drm_driver driver = { .probe = probe, .remove = __devexit_p(drm_cleanup_pci), }, - +#ifdef I915_HAVE_FENCE + .fence_driver = &i915_fence_driver, +#endif +#ifdef I915_HAVE_BUFFER + .bo_driver = &i915_bo_driver, +#endif .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, diff --git a/linux-core/i915_fence.c b/linux-core/i915_fence.c new file mode 100644 index 00000000..fc8ab761 --- /dev/null +++ b/linux-core/i915_fence.c @@ -0,0 +1,143 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" +#include "drm.h" +#include "i915_drm.h" +#include "i915_drv.h" + +/* + * Implements an intel sync flush operation. + */ + +static void i915_perform_flush(drm_device_t * dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + uint32_t flush_flags = 0; + uint32_t flush_sequence = 0; + uint32_t i_status; + uint32_t diff; + uint32_t sequence; + + if (!dev_priv) + return; + + if (fm->pending_exe_flush) { + sequence = READ_BREADCRUMB(dev_priv); + + /* + * First update fences with the current breadcrumb. + */ + + diff = sequence - fm->last_exe_flush; + if (diff < driver->wrap_diff && diff != 0) { + drm_fence_handler(dev, sequence, DRM_FENCE_TYPE_EXE); + } + + diff = sequence - fm->exe_flush_sequence; + if (diff < driver->wrap_diff) { + fm->pending_exe_flush = 0; + if (dev_priv->fence_irq_on) { + i915_user_irq_off(dev_priv); + dev_priv->fence_irq_on = 0; + } + } else if (!dev_priv->fence_irq_on) { + i915_user_irq_on(dev_priv); + dev_priv->fence_irq_on = 1; + } + } + + if (dev_priv->flush_pending) { + i_status = READ_HWSP(dev_priv, 0); + if ((i_status & (1 << 12)) != + (dev_priv->saved_flush_status & (1 << 12))) { + flush_flags = dev_priv->flush_flags; + flush_sequence = dev_priv->flush_sequence; + dev_priv->flush_pending = 0; + drm_fence_handler(dev, flush_sequence, flush_flags); + } + } + + if (fm->pending_flush && !dev_priv->flush_pending) { + dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv); + dev_priv->flush_flags = fm->pending_flush; + dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0); + I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21)); + dev_priv->flush_pending = 1; + fm->pending_flush = 0; + } + + if (dev_priv->flush_pending) { + i_status = READ_HWSP(dev_priv, 0); + if ((i_status & (1 << 12)) != + (dev_priv->saved_flush_status & (1 << 12))) { + flush_flags = dev_priv->flush_flags; + flush_sequence = dev_priv->flush_sequence; + dev_priv->flush_pending = 0; + drm_fence_handler(dev, flush_sequence, flush_flags); + } + } + +} + +void i915_poke_flush(drm_device_t * dev) +{ + drm_fence_manager_t *fm = &dev->fm; + unsigned long flags; + + write_lock_irqsave(&fm->lock, flags); + i915_perform_flush(dev); + write_unlock_irqrestore(&fm->lock, flags); +} + +int i915_fence_emit_sequence(drm_device_t * dev, uint32_t flags, + uint32_t * sequence, uint32_t * native_type) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + i915_emit_irq(dev); + *sequence = (uint32_t) dev_priv->counter; + *native_type = DRM_FENCE_TYPE_EXE; + if (flags & DRM_I915_FENCE_FLAG_FLUSHED) + *native_type |= DRM_I915_FENCE_TYPE_RW; + + return 0; +} + +void i915_fence_handler(drm_device_t * dev) +{ + drm_fence_manager_t *fm = &dev->fm; + + write_lock(&fm->lock); + i915_perform_flush(dev); + write_unlock(&fm->lock); +} diff --git a/shared-core/drm.h b/shared-core/drm.h index 8c0c5d22..440af836 100644 --- a/shared-core/drm.h +++ b/shared-core/drm.h @@ -134,6 +134,12 @@ #define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT)) #if defined(__linux__) +#if defined(__KERNEL__) +typedef __u64 drm_u64_t; +#else +typedef unsigned long long drm_u64_t; +#endif + typedef unsigned int drm_handle_t; #else typedef unsigned long drm_handle_t; /**< To mapped regions */ @@ -267,7 +273,8 @@ typedef enum drm_map_type { _DRM_SHM = 2, /**< shared, cached */ _DRM_AGP = 3, /**< AGP/GART */ _DRM_SCATTER_GATHER = 4, /**< Scatter/gather memory for PCI DMA */ - _DRM_CONSISTENT = 5 /**< Consistent memory for PCI DMA */ + _DRM_CONSISTENT = 5, /**< Consistent memory for PCI DMA */ + _DRM_TTM = 6 } drm_map_type_t; /** @@ -656,6 +663,191 @@ typedef struct drm_set_version { int drm_dd_minor; } drm_set_version_t; +#ifdef __linux__ + +#define DRM_FENCE_FLAG_EMIT 0x00000001 +#define DRM_FENCE_FLAG_SHAREABLE 0x00000002 +#define DRM_FENCE_FLAG_WAIT_LAZY 0x00000004 +#define DRM_FENCE_FLAG_WAIT_IGNORE_SIGNALS 0x00000008 + +/* Reserved for driver use */ +#define DRM_FENCE_MASK_DRIVER 0xFF000000 + +#define DRM_FENCE_TYPE_EXE 0x00000001 + +typedef struct drm_fence_arg { + unsigned handle; + int class; + unsigned type; + unsigned flags; + unsigned signaled; + unsigned expand_pad[4]; /*Future expansion */ + enum { + drm_fence_create, + drm_fence_destroy, + drm_fence_reference, + drm_fence_unreference, + drm_fence_signaled, + drm_fence_flush, + drm_fence_wait, + drm_fence_emit, + drm_fence_buffers + } op; +} drm_fence_arg_t; + +/* Buffer permissions, referring to how the GPU uses the buffers. + these translate to fence types used for the buffers. + Typically a texture buffer is read, A destination buffer is write and + a command (batch-) buffer is exe. Can be or-ed together. */ + +#define DRM_BO_FLAG_READ 0x00000001 +#define DRM_BO_FLAG_WRITE 0x00000002 +#define DRM_BO_FLAG_EXE 0x00000004 + +/* + * Status flags. Can be read to determine the actual state of a buffer. + */ + +/* + * Cannot evict this buffer. Not even with force. This type of buffer should + * only be available for root, and must be manually removed before buffer + * manager shutdown or swapout. + */ +#define DRM_BO_FLAG_NO_EVICT 0x00000010 +/* Always keep a system memory shadow to a vram buffer */ +#define DRM_BO_FLAG_SHADOW_VRAM 0x00000020 +/* The buffer is shareable with other processes */ +#define DRM_BO_FLAG_SHAREABLE 0x00000040 +/* The buffer is currently cached */ +#define DRM_BO_FLAG_CACHED 0x00000080 +/* Make sure that every time this buffer is validated, it ends up on the same + * location. The buffer will also not be evicted when claiming space for + * other buffers. Basically a pinned buffer but it may be thrown out as + * part of buffer manager shutdown or swapout. Not supported yet.*/ +#define DRM_BO_FLAG_NO_MOVE 0x00000100 + +/* Make sure the buffer is in cached memory when mapped for reading */ +#define DRM_BO_FLAG_READ_CACHED 0x00080000 +/* When there is a choice between VRAM and TT, prefer VRAM. + The default behaviour is to prefer TT. */ +#define DRM_BO_FLAG_PREFER_VRAM 0x00040000 +/* Bind this buffer cached if the hardware supports it. */ +#define DRM_BO_FLAG_BIND_CACHED 0x0002000 + +/* System Memory */ +#define DRM_BO_FLAG_MEM_LOCAL 0x01000000 +/* Translation table memory */ +#define DRM_BO_FLAG_MEM_TT 0x02000000 +/* Vram memory */ +#define DRM_BO_FLAG_MEM_VRAM 0x04000000 +/* Unmappable Vram memory */ +#define DRM_BO_FLAG_MEM_VRAM_NM 0x08000000 +/* Memory flag mask */ +#define DRM_BO_MASK_MEM 0xFF000000 + +/* When creating a buffer, Avoid system storage even if allowed */ +#define DRM_BO_HINT_AVOID_LOCAL 0x00000001 +/* Don't block on validate and map */ +#define DRM_BO_HINT_DONT_BLOCK 0x00000002 +/* Don't place this buffer on the unfenced list.*/ +#define DRM_BO_HINT_DONT_FENCE 0x00000004 +#define DRM_BO_HINT_WAIT_LAZY 0x00000008 +#define DRM_BO_HINT_ALLOW_UNFENCED_MAP 0x00000010 + + +/* Driver specific flags. Could be for example rendering engine */ +#define DRM_BO_MASK_DRIVER 0x00F00000 + +typedef enum { + drm_bo_type_dc, + drm_bo_type_user, + drm_bo_type_fake +}drm_bo_type_t; + + +typedef struct drm_bo_arg_request { + unsigned handle; /* User space handle */ + unsigned mask; + unsigned hint; + drm_u64_t size; + drm_bo_type_t type; + unsigned arg_handle; + drm_u64_t buffer_start; + unsigned expand_pad[4]; /*Future expansion */ + enum { + drm_bo_create, + drm_bo_validate, + drm_bo_map, + drm_bo_unmap, + drm_bo_fence, + drm_bo_destroy, + drm_bo_reference, + drm_bo_unreference, + drm_bo_info, + drm_bo_wait_idle, + drm_bo_ref_fence + } op; +} drm_bo_arg_request_t; + + +/* + * Reply flags + */ + +#define DRM_BO_REP_BUSY 0x00000001 + +typedef struct drm_bo_arg_reply { + int ret; + unsigned handle; + unsigned flags; + drm_u64_t size; + drm_u64_t offset; + drm_u64_t arg_handle; + unsigned mask; + drm_u64_t buffer_start; + unsigned fence_flags; + unsigned rep_flags; + unsigned expand_pad[4]; /*Future expansion */ +}drm_bo_arg_reply_t; + + +typedef struct drm_bo_arg{ + int handled; + drm_u64_t next; + union { + drm_bo_arg_request_t req; + drm_bo_arg_reply_t rep; + } d; +} drm_bo_arg_t; + +#define DRM_BO_MEM_LOCAL 0 +#define DRM_BO_MEM_TT 1 +#define DRM_BO_MEM_VRAM 2 +#define DRM_BO_MEM_VRAM_NM 3 +#define DRM_BO_MEM_TYPES 2 /* For now. */ + +typedef union drm_mm_init_arg{ + struct { + enum { + mm_init, + mm_takedown, + mm_query, + mm_lock, + mm_unlock + } op; + drm_u64_t p_offset; + drm_u64_t p_size; + unsigned mem_type; + unsigned expand_pad[8]; /*Future expansion */ + } req; + struct { + drm_handle_t mm_sarea; + unsigned expand_pad[8]; /*Future expansion */ + } rep; +} drm_mm_init_arg_t; +#endif + + /** * \name Ioctls Definitions */ @@ -721,17 +913,25 @@ typedef struct drm_set_version { #define DRM_IOCTL_WAIT_VBLANK DRM_IOWR(0x3a, drm_wait_vblank_t) +#ifdef __linux__ +#define DRM_IOCTL_FENCE DRM_IOWR(0x3b, drm_fence_arg_t) +#define DRM_IOCTL_BUFOBJ DRM_IOWR(0x3d, drm_bo_arg_t) +#define DRM_IOCTL_MM_INIT DRM_IOWR(0x3e, drm_mm_init_arg_t) +#endif + #define DRM_IOCTL_UPDATE_DRAW DRM_IOW(0x3f, drm_update_draw_t) /*@}*/ /** * Device specific ioctls should only be in their respective headers - * The device specific ioctl range is from 0x40 to 0x79. + * The device specific ioctl range is from 0x40 to 0x99. + * Generic IOCTLS restart at 0xA0. * * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and * drmCommandReadWrite(). */ #define DRM_COMMAND_BASE 0x40 +#define DRM_COMMAND_END 0xA0 #endif diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c index be235c17..60e3e945 100644 --- a/shared-core/i915_dma.c +++ b/shared-core/i915_dma.c @@ -196,9 +196,10 @@ static int i915_initialize(drm_device_t * dev, I915_WRITE(0x02080, dev_priv->dma_status_page); DRM_DEBUG("Enabled hardware status page\n"); - dev->dev_private = (void *)dev_priv; - +#ifdef I915_HAVE_BUFFER + drm_bo_driver_init(dev); +#endif return 0; } @@ -435,17 +436,39 @@ static void i915_emit_breadcrumb(drm_device_t *dev) dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter; - if (dev_priv->counter > 0x7FFFFFFFUL) - dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1; - BEGIN_LP_RING(4); OUT_RING(CMD_STORE_DWORD_IDX); OUT_RING(20); OUT_RING(dev_priv->counter); OUT_RING(0); ADVANCE_LP_RING(); +#ifdef I915_HAVE_FENCE + drm_fence_flush_old(dev, dev_priv->counter); +#endif } + +int i915_emit_mi_flush(drm_device_t *dev, uint32_t flush) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + uint32_t flush_cmd = CMD_MI_FLUSH; + RING_LOCALS; + + flush_cmd |= flush; + + i915_kernel_lost_context(dev); + + BEGIN_LP_RING(4); + OUT_RING(flush_cmd); + OUT_RING(0); + OUT_RING(0); + OUT_RING(0); + ADVANCE_LP_RING(); + + return 0; +} + + static int i915_dispatch_cmdbuffer(drm_device_t * dev, drm_i915_cmdbuffer_t * cmd) { @@ -566,7 +589,9 @@ static int i915_dispatch_flip(drm_device_t * dev) OUT_RING(dev_priv->counter); OUT_RING(0); ADVANCE_LP_RING(); - +#ifdef I915_HAVE_FENCE + drm_fence_flush_old(dev, dev_priv->counter); +#endif dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; return 0; } @@ -680,6 +705,7 @@ static int i915_flip_bufs(DRM_IOCTL_ARGS) return i915_dispatch_flip(dev); } + static int i915_getparam(DRM_IOCTL_ARGS) { DRM_DEVICE; diff --git a/shared-core/i915_drm.h b/shared-core/i915_drm.h index 358b11e2..9eec109e 100644 --- a/shared-core/i915_drm.h +++ b/shared-core/i915_drm.h @@ -115,6 +115,16 @@ typedef struct _drm_i915_sarea { int pipeB_h; } drm_i915_sarea_t; +/* Driver specific fence types and classes. + */ + +/* The only fence class we support */ +#define DRM_I915_FENCE_CLASS_ACCEL 0 +/* Fence type that guarantees read-write flush */ +#define DRM_I915_FENCE_TYPE_RW 2 +/* MI_FLUSH programmed just before the fence */ +#define DRM_I915_FENCE_FLAG_FLUSHED 0x01000000 + /* Flags for perf_boxes */ #define I915_BOX_RING_EMPTY 0x1 diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h index de7f8224..85804ce7 100644 --- a/shared-core/i915_drv.h +++ b/shared-core/i915_drv.h @@ -35,9 +35,9 @@ #define DRIVER_AUTHOR "Tungsten Graphics, Inc." -#define DRIVER_NAME "i915" +#define DRIVER_NAME "i915-mm" #define DRIVER_DESC "Intel Graphics" -#define DRIVER_DATE "20060119" +#define DRIVER_DATE "20060929" /* Interface history: * @@ -50,9 +50,14 @@ * - Support vertical blank on secondary display pipe */ #define DRIVER_MAJOR 1 -#define DRIVER_MINOR 6 +#define DRIVER_MINOR 7 #define DRIVER_PATCHLEVEL 0 +#if defined(__linux__) +#define I915_HAVE_FENCE +#define I915_HAVE_BUFFER +#endif + typedef struct _drm_i915_ring_buffer { int tail_mask; unsigned long Start; @@ -90,7 +95,7 @@ typedef struct drm_i915_private { drm_dma_handle_t *status_page_dmah; void *hw_status_page; dma_addr_t dma_status_page; - unsigned long counter; + uint32_t counter; unsigned int cpp; int back_offset; @@ -108,6 +113,18 @@ typedef struct drm_i915_private { struct mem_block *agp_heap; unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds; int vblank_pipe; + spinlock_t user_irq_lock; + int user_irq_refcount; + int fence_irq_on; + uint32_t irq_enable_reg; + int irq_enabled; + +#ifdef I915_HAVE_FENCE + uint32_t flush_sequence; + uint32_t flush_flags; + uint32_t flush_pending; + uint32_t saved_flush_status; +#endif spinlock_t swaps_lock; drm_i915_vbl_swap_t vbl_swaps; @@ -125,6 +142,8 @@ extern void i915_driver_preclose(drm_device_t * dev, DRMFILE filp); extern int i915_driver_device_is_agp(drm_device_t * dev); extern long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +extern int i915_emit_mi_flush(drm_device_t *dev, uint32_t flush); + /* i915_irq.c */ extern int i915_irq_emit(DRM_IOCTL_ARGS); @@ -138,6 +157,9 @@ extern void i915_driver_irq_postinstall(drm_device_t * dev); extern void i915_driver_irq_uninstall(drm_device_t * dev); extern int i915_vblank_pipe_set(DRM_IOCTL_ARGS); extern int i915_vblank_pipe_get(DRM_IOCTL_ARGS); +extern int i915_emit_irq(drm_device_t * dev); +extern void i915_user_irq_on(drm_i915_private_t *dev_priv); +extern void i915_user_irq_off(drm_i915_private_t *dev_priv); extern int i915_vblank_swap(DRM_IOCTL_ARGS); /* i915_mem.c */ @@ -148,6 +170,23 @@ extern int i915_mem_destroy_heap(DRM_IOCTL_ARGS); extern void i915_mem_takedown(struct mem_block **heap); extern void i915_mem_release(drm_device_t * dev, DRMFILE filp, struct mem_block *heap); +#ifdef I915_HAVE_FENCE +/* i915_fence.c */ + + +extern void i915_fence_handler(drm_device_t *dev); +extern int i915_fence_emit_sequence(drm_device_t *dev, uint32_t flags, + uint32_t *sequence, + uint32_t *native_type); +extern void i915_poke_flush(drm_device_t *dev); +#endif + +#ifdef I915_HAVE_BUFFER +/* i915_buffer.c */ +extern drm_ttm_backend_t *i915_create_ttm_backend_entry(drm_device_t *dev); +extern int i915_fence_types(uint32_t buffer_flags, uint32_t *class, uint32_t *type); +extern int i915_invalidate_caches(drm_device_t *dev, uint32_t buffer_flags); +#endif #define I915_READ(reg) DRM_READ32(dev_priv->mmio_map, (reg)) #define I915_WRITE(reg,val) DRM_WRITE32(dev_priv->mmio_map, (reg), (val)) @@ -198,6 +237,11 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller); #define INST_OP_FLUSH 0x02000000 #define INST_FLUSH_MAP_CACHE 0x00000001 +#define CMD_MI_FLUSH (0x04 << 23) +#define MI_NO_WRITE_FLUSH (1 << 2) +#define MI_READ_FLUSH (1 << 0) +#define MI_EXE_FLUSH (1 << 1) + #define BB1_START_ADDR_MASK (~0x7) #define BB1_PROTECTED (1<<0) #define BB1_UNPROTECTED (0<<0) @@ -207,6 +251,7 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller); #define I915REG_INT_IDENTITY_R 0x020a4 #define I915REG_INT_MASK_R 0x020a8 #define I915REG_INT_ENABLE_R 0x020a0 +#define I915REG_INSTPM 0x020c0 #define SRX_INDEX 0x3c4 #define SRX_DATA 0x3c5 @@ -292,6 +337,6 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller); #define CMD_OP_DESTBUFFER_INFO ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1) -#define READ_BREADCRUMB(dev_priv) (((u32*)(dev_priv->hw_status_page))[5]) - +#define READ_BREADCRUMB(dev_priv) (((volatile u32*)(dev_priv->hw_status_page))[5]) +#define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg]) #endif diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c index feb7acc7..a48e1ff8 100644 --- a/shared-core/i915_irq.c +++ b/shared-core/i915_irq.c @@ -138,10 +138,11 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) temp = I915_READ16(I915REG_INT_IDENTITY_R); - temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG); + temp &= (dev_priv->irq_enable_reg | USER_INT_FLAG); +#if 0 DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp); - +#endif if (temp == 0) return IRQ_NONE; @@ -149,8 +150,12 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - if (temp & USER_INT_FLAG) + if (temp & USER_INT_FLAG) { DRM_WAKEUP(&dev_priv->irq_queue); +#ifdef I915_HAVE_FENCE + i915_fence_handler(dev); +#endif + } if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) { int vblank_pipe = dev_priv->vblank_pipe; @@ -178,7 +183,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) return IRQ_HANDLED; } -static int i915_emit_irq(drm_device_t * dev) +int i915_emit_irq(drm_device_t * dev) { drm_i915_private_t *dev_priv = dev->dev_private; @@ -208,6 +213,28 @@ static int i915_emit_irq(drm_device_t * dev) } +void i915_user_irq_on(drm_i915_private_t *dev_priv) +{ + spin_lock(&dev_priv->user_irq_lock); + if (dev_priv->irq_enabled && (++dev_priv->user_irq_refcount == 1)){ + dev_priv->irq_enable_reg |= USER_INT_FLAG; + I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg); + } + spin_unlock(&dev_priv->user_irq_lock); + +} + +void i915_user_irq_off(drm_i915_private_t *dev_priv) +{ + spin_lock(&dev_priv->user_irq_lock); + if (dev_priv->irq_enabled && (--dev_priv->user_irq_refcount == 0)) { + // dev_priv->irq_enable_reg &= ~USER_INT_FLAG; + // I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg); + } + spin_unlock(&dev_priv->user_irq_lock); +} + + static int i915_wait_irq(drm_device_t * dev, int irq_nr) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -220,9 +247,11 @@ static int i915_wait_irq(drm_device_t * dev, int irq_nr) return 0; dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; - + + i915_user_irq_on(dev_priv); DRM_WAIT_ON(ret, dev_priv->irq_queue, 3 * DRM_HZ, READ_BREADCRUMB(dev_priv) >= irq_nr); + i915_user_irq_off(dev_priv); if (ret == DRM_ERR(EBUSY)) { DRM_ERROR("%s: EBUSY -- rec: %d emitted: %d\n", @@ -316,15 +345,15 @@ int i915_irq_wait(DRM_IOCTL_ARGS) static void i915_enable_interrupt (drm_device_t *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - u16 flag; - flag = 0; + dev_priv->irq_enable_reg = USER_INT_FLAG; if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_A) - flag |= VSYNC_PIPEA_FLAG; + dev_priv->irq_enable_reg |= VSYNC_PIPEA_FLAG; if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_B) - flag |= VSYNC_PIPEB_FLAG; + dev_priv->irq_enable_reg |= VSYNC_PIPEB_FLAG; - I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | flag); + I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg); + dev_priv->irq_enabled = 1; } /* Set the vblank monitor pipe @@ -497,7 +526,7 @@ void i915_driver_irq_preinstall(drm_device_t * dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - I915_WRITE16(I915REG_HWSTAM, 0xfffe); + I915_WRITE16(I915REG_HWSTAM, 0xeffe); I915_WRITE16(I915REG_INT_MASK_R, 0x0); I915_WRITE16(I915REG_INT_ENABLE_R, 0x0); } @@ -512,8 +541,24 @@ void i915_driver_irq_postinstall(drm_device_t * dev) if (!dev_priv->vblank_pipe) dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A; + + dev_priv->swaps_lock = SPIN_LOCK_UNLOCKED; + INIT_LIST_HEAD(&dev_priv->vbl_swaps.head); + dev_priv->swaps_pending = 0; + + dev_priv->user_irq_lock = SPIN_LOCK_UNLOCKED; + dev_priv->user_irq_refcount = 0; + + if (!dev_priv->vblank_pipe) + dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A; i915_enable_interrupt(dev); DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); + + /* + * Initialize the hardware status page IRQ location. + */ + + I915_WRITE(I915REG_INSTPM, ( 1 << 5) | ( 1 << 21)); } void i915_driver_irq_uninstall(drm_device_t * dev) @@ -523,6 +568,7 @@ void i915_driver_irq_uninstall(drm_device_t * dev) if (!dev_priv) return; + dev_priv->irq_enabled = 0; I915_WRITE16(I915REG_HWSTAM, 0xffff); I915_WRITE16(I915REG_INT_MASK_R, 0xffff); I915_WRITE16(I915REG_INT_ENABLE_R, 0x0); |