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-rw-r--r--linux-core/ffb_drv.c382
1 files changed, 382 insertions, 0 deletions
diff --git a/linux-core/ffb_drv.c b/linux-core/ffb_drv.c
new file mode 100644
index 00000000..d75226c2
--- /dev/null
+++ b/linux-core/ffb_drv.c
@@ -0,0 +1,382 @@
+/* $Id$
+ * ffb_drv.c: Creator/Creator3D direct rendering driver.
+ *
+ * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/config.h>
+#include "ffb.h"
+#include "drmP.h"
+
+#include "ffb_drv.h"
+
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <asm/shmparam.h>
+#include <asm/oplib.h>
+#include <asm/upa.h>
+
+#define DRIVER_AUTHOR "David S. Miller"
+
+#define DRIVER_NAME "ffb"
+#define DRIVER_DESC "Creator/Creator3D"
+#define DRIVER_DATE "20000517"
+
+#define DRIVER_MAJOR 0
+#define DRIVER_MINOR 0
+#define DRIVER_PATCHLEVEL 1
+
+#define DRIVER_FOPS \
+static struct file_operations DRM(fops) = { \
+ .owner = THIS_MODULE, \
+ .open = DRM(open), \
+ .flush = DRM(flush), \
+ .release = DRM(release), \
+ .ioctl = DRM(ioctl), \
+ .mmap = DRM(mmap), \
+ .read = DRM(read), \
+ .fasync = DRM(fasync), \
+ .poll = DRM(poll), \
+ .get_unmapped_area = ffb_get_unmapped_area, \
+}
+
+#define DRIVER_COUNT_CARDS() ffb_count_card_instances()
+/* Allocate private structure and fill it */
+#define DRIVER_PRESETUP() do { \
+ int _ret; \
+ _ret = ffb_presetup(dev); \
+ if (_ret != 0) return _ret; \
+} while(0)
+
+/* Free private structure */
+#define DRIVER_PRETAKEDOWN() do { \
+ if (dev->dev_private) kfree(dev->dev_private); \
+} while(0)
+
+#define DRIVER_POSTCLEANUP() do { \
+ if (ffb_position != NULL) kfree(ffb_position); \
+} while(0)
+
+/* We have to free up the rogue hw context state holding error or
+ * else we will leak it.
+ */
+#define DRIVER_RELEASE() do { \
+ ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private; \
+ int context = _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock); \
+ int idx; \
+ \
+ idx = context - 1; \
+ if (fpriv && \
+ context != DRM_KERNEL_CONTEXT && \
+ fpriv->hw_state[idx] != NULL) { \
+ kfree(fpriv->hw_state[idx]); \
+ fpriv->hw_state[idx] = NULL; \
+ } \
+} while(0)
+
+/* For mmap customization */
+#define DRIVER_GET_MAP_OFS() (map->offset & 0xffffffff)
+#define DRIVER_GET_REG_OFS() ffb_get_reg_offset(dev)
+
+typedef struct _ffb_position_t {
+ int node;
+ int root;
+} ffb_position_t;
+
+static ffb_position_t *ffb_position;
+
+static void get_ffb_type(ffb_dev_priv_t *ffb_priv, int instance)
+{
+ volatile unsigned char *strap_bits;
+ unsigned char val;
+
+ strap_bits = (volatile unsigned char *)
+ (ffb_priv->card_phys_base + 0x00200000UL);
+
+ /* Don't ask, you have to read the value twice for whatever
+ * reason to get correct contents.
+ */
+ val = upa_readb(strap_bits);
+ val = upa_readb(strap_bits);
+ switch (val & 0x78) {
+ case (0x0 << 5) | (0x0 << 3):
+ ffb_priv->ffb_type = ffb1_prototype;
+ printk("ffb%d: Detected FFB1 pre-FCS prototype\n", instance);
+ break;
+ case (0x0 << 5) | (0x1 << 3):
+ ffb_priv->ffb_type = ffb1_standard;
+ printk("ffb%d: Detected FFB1\n", instance);
+ break;
+ case (0x0 << 5) | (0x3 << 3):
+ ffb_priv->ffb_type = ffb1_speedsort;
+ printk("ffb%d: Detected FFB1-SpeedSort\n", instance);
+ break;
+ case (0x1 << 5) | (0x0 << 3):
+ ffb_priv->ffb_type = ffb2_prototype;
+ printk("ffb%d: Detected FFB2/vertical pre-FCS prototype\n", instance);
+ break;
+ case (0x1 << 5) | (0x1 << 3):
+ ffb_priv->ffb_type = ffb2_vertical;
+ printk("ffb%d: Detected FFB2/vertical\n", instance);
+ break;
+ case (0x1 << 5) | (0x2 << 3):
+ ffb_priv->ffb_type = ffb2_vertical_plus;
+ printk("ffb%d: Detected FFB2+/vertical\n", instance);
+ break;
+ case (0x2 << 5) | (0x0 << 3):
+ ffb_priv->ffb_type = ffb2_horizontal;
+ printk("ffb%d: Detected FFB2/horizontal\n", instance);
+ break;
+ case (0x2 << 5) | (0x2 << 3):
+ ffb_priv->ffb_type = ffb2_horizontal;
+ printk("ffb%d: Detected FFB2+/horizontal\n", instance);
+ break;
+ default:
+ ffb_priv->ffb_type = ffb2_vertical;
+ printk("ffb%d: Unknown boardID[%08x], assuming FFB2\n", instance, val);
+ break;
+ };
+}
+
+static void ffb_apply_upa_parent_ranges(int parent,
+ struct linux_prom64_registers *regs)
+{
+ struct linux_prom64_ranges ranges[PROMREG_MAX];
+ char name[128];
+ int len, i;
+
+ prom_getproperty(parent, "name", name, sizeof(name));
+ if (strcmp(name, "upa") != 0)
+ return;
+
+ len = prom_getproperty(parent, "ranges", (void *) ranges, sizeof(ranges));
+ if (len <= 0)
+ return;
+
+ len /= sizeof(struct linux_prom64_ranges);
+ for (i = 0; i < len; i++) {
+ struct linux_prom64_ranges *rng = &ranges[i];
+ u64 phys_addr = regs->phys_addr;
+
+ if (phys_addr >= rng->ot_child_base &&
+ phys_addr < (rng->ot_child_base + rng->or_size)) {
+ regs->phys_addr -= rng->ot_child_base;
+ regs->phys_addr += rng->ot_parent_base;
+ return;
+ }
+ }
+
+ return;
+}
+
+static int ffb_init_one(drm_device_t *dev, int prom_node, int parent_node,
+ int instance)
+{
+ struct linux_prom64_registers regs[2*PROMREG_MAX];
+ ffb_dev_priv_t *ffb_priv = (ffb_dev_priv_t *)dev->dev_private;
+ int i;
+
+ ffb_priv->prom_node = prom_node;
+ if (prom_getproperty(ffb_priv->prom_node, "reg",
+ (void *)regs, sizeof(regs)) <= 0) {
+ return -EINVAL;
+ }
+ ffb_apply_upa_parent_ranges(parent_node, &regs[0]);
+ ffb_priv->card_phys_base = regs[0].phys_addr;
+ ffb_priv->regs = (ffb_fbcPtr)
+ (regs[0].phys_addr + 0x00600000UL);
+ get_ffb_type(ffb_priv, instance);
+ for (i = 0; i < FFB_MAX_CTXS; i++)
+ ffb_priv->hw_state[i] = NULL;
+
+ return 0;
+}
+
+static int __init ffb_count_siblings(int root)
+{
+ int node, child, count = 0;
+
+ child = prom_getchild(root);
+ for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
+ node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
+ count++;
+
+ return count;
+}
+
+static int __init ffb_scan_siblings(int root, int instance)
+{
+ int node, child;
+
+ child = prom_getchild(root);
+ for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
+ node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb")) {
+ ffb_position[instance].node = node;
+ ffb_position[instance].root = root;
+ instance++;
+ }
+
+ return instance;
+}
+
+static int ffb_presetup(drm_device_t *);
+
+static int __init ffb_count_card_instances(void)
+{
+ int root, total, instance;
+
+ total = ffb_count_siblings(prom_root_node);
+ root = prom_getchild(prom_root_node);
+ for (root = prom_searchsiblings(root, "upa"); root;
+ root = prom_searchsiblings(prom_getsibling(root), "upa"))
+ total += ffb_count_siblings(root);
+
+ ffb_position = kmalloc(sizeof(ffb_position_t) * total, GFP_KERNEL);
+
+ /* Actual failure will be caught during ffb_presetup b/c we can't catch
+ * it easily here.
+ */
+ if (!ffb_position)
+ return -ENOMEM;
+
+ instance = ffb_scan_siblings(prom_root_node, 0);
+
+ root = prom_getchild(prom_root_node);
+ for (root = prom_searchsiblings(root, "upa"); root;
+ root = prom_searchsiblings(prom_getsibling(root), "upa"))
+ instance = ffb_scan_siblings(root, instance);
+
+ return total;
+}
+
+static drm_map_t *ffb_find_map(struct file *filp, unsigned long off)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev;
+ drm_map_list_t *r_list;
+ struct list_head *list;
+ drm_map_t *map;
+
+ if (!priv || (dev = priv->dev) == NULL)
+ return NULL;
+
+ list_for_each(list, &dev->maplist->head) {
+ unsigned long uoff;
+
+ r_list = (drm_map_list_t *)list;
+ map = r_list->map;
+ if (!map)
+ continue;
+ uoff = (map->offset & 0xffffffff);
+ if (uoff == off)
+ return map;
+ }
+
+ return NULL;
+}
+
+static unsigned long ffb_get_unmapped_area(struct file *filp,
+ unsigned long hint,
+ unsigned long len,
+ unsigned long pgoff,
+ unsigned long flags)
+{
+ drm_map_t *map = ffb_find_map(filp, pgoff << PAGE_SHIFT);
+ unsigned long addr = -ENOMEM;
+
+ if (!map)
+ return get_unmapped_area(NULL, hint, len, pgoff, flags);
+
+ if (map->type == _DRM_FRAME_BUFFER ||
+ map->type == _DRM_REGISTERS) {
+#ifdef HAVE_ARCH_FB_UNMAPPED_AREA
+ addr = get_fb_unmapped_area(filp, hint, len, pgoff, flags);
+#else
+ addr = get_unmapped_area(NULL, hint, len, pgoff, flags);
+#endif
+ } else if (map->type == _DRM_SHM && SHMLBA > PAGE_SIZE) {
+ unsigned long slack = SHMLBA - PAGE_SIZE;
+
+ addr = get_unmapped_area(NULL, hint, len + slack, pgoff, flags);
+ if (!(addr & ~PAGE_MASK)) {
+ unsigned long kvirt = (unsigned long) map->handle;
+
+ if ((kvirt & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) {
+ unsigned long koff, aoff;
+
+ koff = kvirt & (SHMLBA - 1);
+ aoff = addr & (SHMLBA - 1);
+ if (koff < aoff)
+ koff += SHMLBA;
+
+ addr += (koff - aoff);
+ }
+ }
+ } else {
+ addr = get_unmapped_area(NULL, hint, len, pgoff, flags);
+ }
+
+ return addr;
+}
+
+static unsigned long ffb_get_reg_offset(drm_device_t *dev)
+{
+ ffb_dev_priv_t *ffb_priv = (ffb_dev_priv_t *)dev->dev_private;
+
+ if (ffb_priv)
+ return ffb_priv->card_phys_base;
+
+ return 0;
+}
+
+#include "drm_auth.h"
+#include "drm_bufs.h"
+#include "drm_dma.h"
+#include "drm_drawable.h"
+#include "drm_drv.h"
+
+/* This functions must be here since it references DRM(numdevs)
+ * which drm_drv.h declares.
+ */
+static int ffb_presetup(drm_device_t *dev)
+{
+ ffb_dev_priv_t *ffb_priv;
+ drm_device_t *temp_dev;
+ int ret = 0;
+ int i;
+
+ /* Check for the case where no device was found. */
+ if (ffb_position == NULL)
+ return -ENODEV;
+
+ /* Find our instance number by finding our device in dev structure */
+ for (i = 0; i < DRM(numdevs); i++) {
+ temp_dev = &(DRM(device)[i]);
+ if(temp_dev == dev)
+ break;
+ }
+
+ if (i == DRM(numdevs))
+ return -ENODEV;
+
+ ffb_priv = kmalloc(sizeof(ffb_dev_priv_t), GFP_KERNEL);
+ if (!ffb_priv)
+ return -ENOMEM;
+ memset(ffb_priv, 0, sizeof(*ffb_priv));
+ dev->dev_private = ffb_priv;
+
+ ret = ffb_init_one(dev,
+ ffb_position[i].node,
+ ffb_position[i].root,
+ i);
+ return ret;
+}
+
+#include "drm_fops.h"
+#include "drm_init.h"
+#include "drm_ioctl.h"
+#include "drm_lock.h"
+#include "drm_memory.h"
+#include "drm_proc.h"
+#include "drm_vm.h"
+#include "drm_stub.h"