From f17d417e28143176cb36b64e1b6a5818897e8154 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 20 Jul 2013 20:35:31 -0400 Subject: freedreno: add support for msm drm This adds support for the "msm" backend, using the upstream msm drm/kms driver. Signed-off-by: Rob Clark --- freedreno/msm/msm_ringbuffer.c | 303 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100644 freedreno/msm/msm_ringbuffer.c (limited to 'freedreno/msm/msm_ringbuffer.c') diff --git a/freedreno/msm/msm_ringbuffer.c b/freedreno/msm/msm_ringbuffer.c new file mode 100644 index 00000000..fc5193ae --- /dev/null +++ b/freedreno/msm/msm_ringbuffer.c @@ -0,0 +1,303 @@ +/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ + +/* + * Copyright (C) 2013 Rob Clark + * + * 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, sublicense, + * 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 above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + * + * Authors: + * Rob Clark + */ + +#include + +#include "freedreno_ringbuffer.h" +#include "msm_priv.h" + +struct msm_ringbuffer { + struct fd_ringbuffer base; + struct fd_bo *ring_bo; + + struct list_head submit_list; + + /* bo's table: */ + struct drm_msm_gem_submit_bo *bos; + uint32_t nr_bos, max_bos; + + /* cmd's table: */ + struct drm_msm_gem_submit_cmd *cmds; + uint32_t nr_cmds, max_cmds; + + /* reloc's table: */ + struct drm_msm_gem_submit_reloc *relocs; + uint32_t nr_relocs, max_relocs; +}; + +static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz) +{ + if ((nr + 1) > *max) { + if ((*max * 2) < (nr + 1)) + *max = nr + 5; + else + *max = *max * 2; + ptr = realloc(ptr, *max * sz); + } + return ptr; +} + +#define APPEND(x, name) ({ \ + (x)->name = grow((x)->name, (x)->nr_ ## name, &(x)->max_ ## name, sizeof((x)->name[0])); \ + (x)->nr_ ## name ++; \ +}) + +static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x) +{ + return (struct msm_ringbuffer *)x; +} + +/* add (if needed) bo, return idx: */ +static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + struct msm_bo *msm_bo = to_msm_bo(bo); + int id = ring->pipe->id; + uint32_t idx; + if (!msm_bo->indexp1[id]) { + struct list_head *list = &msm_bo->list[id]; + idx = APPEND(msm_ring, bos); + msm_ring->bos[idx].flags = 0; + msm_ring->bos[idx].handle = bo->handle; + msm_ring->bos[idx].presumed = msm_bo->presumed; + msm_bo->indexp1[id] = idx + 1; + + assert(LIST_IS_EMPTY(list)); + fd_bo_ref(bo); + list_addtail(list, &msm_ring->submit_list); + } else { + idx = msm_bo->indexp1[id] - 1; + } + if (flags & FD_RELOC_READ) + msm_ring->bos[idx].flags |= MSM_SUBMIT_BO_READ; + if (flags & FD_RELOC_WRITE) + msm_ring->bos[idx].flags |= MSM_SUBMIT_BO_WRITE; + return idx; +} + +static uint32_t offset_bytes(void *end, void *start) +{ + return ((char *)end) - ((char *)start); +} + +static struct drm_msm_gem_submit_cmd * get_cmd(struct fd_ringbuffer *ring, + struct fd_bo *ring_bo, uint32_t submit_offset, uint32_t size, uint32_t type) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + struct drm_msm_gem_submit_cmd *cmd = NULL; + uint32_t i; + + /* figure out if we already have a cmd buf: */ + for (i = 0; i < msm_ring->nr_cmds; i++) { + cmd = &msm_ring->cmds[i]; + if ((cmd->submit_offset == submit_offset) && + (cmd->size == size) && + (cmd->type == type)) + break; + cmd = NULL; + } + + /* create cmd buf if not: */ + if (!cmd) { + uint32_t idx = APPEND(msm_ring, cmds); + cmd = &msm_ring->cmds[idx]; + cmd->type = type; + cmd->submit_idx = bo2idx(ring, ring_bo, FD_RELOC_READ); + cmd->submit_offset = submit_offset; + cmd->size = size; + } + + return cmd; +} + +static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + return fd_bo_map(msm_ring->ring_bo); +} + +static uint32_t find_next_reloc_idx(struct msm_ringbuffer *msm_ring, + uint32_t start, uint32_t offset) +{ + uint32_t i; + + /* a binary search would be more clever.. */ + for (i = start; i < msm_ring->nr_relocs; i++) { + struct drm_msm_gem_submit_reloc *reloc = &msm_ring->relocs[i]; + if (reloc->submit_offset >= offset) + return i; + } + + return i; +} + +static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + struct fd_bo *ring_bo = msm_ring->ring_bo; + struct drm_msm_gem_submit req = { + .pipe = to_msm_pipe(ring->pipe)->pipe, + }; + struct msm_bo *msm_bo = NULL, *tmp; + uint32_t i, submit_offset, size; + int ret, id = ring->pipe->id; + + submit_offset = offset_bytes(last_start, ring->start); + size = offset_bytes(ring->cur, last_start); + + get_cmd(ring, ring_bo, submit_offset, size, MSM_SUBMIT_CMD_BUF); + + /* needs to be after get_cmd() as that could create bos/cmds table: */ + req.bos = VOID2U64(msm_ring->bos), + req.nr_bos = msm_ring->nr_bos; + req.cmds = VOID2U64(msm_ring->cmds), + req.nr_cmds = msm_ring->nr_cmds; + + /* for each of the cmd's fix up their reloc's: */ + for (i = 0; i < msm_ring->nr_cmds; i++) { + struct drm_msm_gem_submit_cmd *cmd = &msm_ring->cmds[i]; + uint32_t a = find_next_reloc_idx(msm_ring, 0, cmd->submit_offset); + uint32_t b = find_next_reloc_idx(msm_ring, a, cmd->submit_offset + cmd->size); + cmd->relocs = VOID2U64(&msm_ring->relocs[a]); + cmd->nr_relocs = (b > a) ? b - a : 0; + } + + DEBUG_MSG("nr_cmds=%u, nr_bos=%u\n", req.nr_cmds, req.nr_bos); + + ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT, + &req, sizeof(req)); + if (ret) + ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno)); + + LIST_FOR_EACH_ENTRY_SAFE(msm_bo, tmp, &msm_ring->submit_list, list[id]) { + struct list_head *list = &msm_bo->list[id]; + list_delinit(list); + msm_bo->indexp1[id] = 0; + fd_bo_del(&msm_bo->base); + } + + msm_ring->nr_cmds = 0; + msm_ring->nr_relocs = 0; + msm_ring->nr_bos = 0; + + return ret; +} + +static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring, + const struct fd_reloc *r) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + struct msm_bo *msm_bo = to_msm_bo(r->bo); + struct drm_msm_gem_submit_reloc *reloc; + uint32_t idx = APPEND(msm_ring, relocs); + uint32_t addr; + + reloc = &msm_ring->relocs[idx]; + + reloc->reloc_idx = bo2idx(ring, r->bo, r->flags); + reloc->reloc_offset = r->offset; + reloc->or = r->or; + reloc->shift = r->shift; + reloc->submit_offset = offset_bytes(ring->cur, ring->start); + + addr = msm_bo->presumed; + if (r->shift < 0) + addr >>= -r->shift; + else + addr <<= r->shift; + (*ring->cur++) = addr | r->or; +} + +static void msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring, + struct fd_ringmarker *target, struct fd_ringmarker *end) +{ + struct fd_bo *ring_bo = to_msm_ringbuffer(target->ring)->ring_bo; + struct drm_msm_gem_submit_cmd *cmd; + uint32_t submit_offset, size; + + submit_offset = offset_bytes(target->cur, target->ring->start); + size = offset_bytes(end->cur, target->cur); + + assert(target->ring == ring); // TODO + + cmd = get_cmd(ring, ring_bo, submit_offset, size, + MSM_SUBMIT_CMD_IB_TARGET_BUF); + assert(cmd); + + msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){ + .bo = ring_bo, + .flags = FD_RELOC_READ, + .offset = submit_offset, + }); +} + +static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring) +{ + struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); + if (msm_ring->ring_bo) + fd_bo_del(msm_ring->ring_bo); + free(msm_ring); +} + +static struct fd_ringbuffer_funcs funcs = { + .hostptr = msm_ringbuffer_hostptr, + .flush = msm_ringbuffer_flush, + .emit_reloc = msm_ringbuffer_emit_reloc, + .emit_reloc_ring = msm_ringbuffer_emit_reloc_ring, + .destroy = msm_ringbuffer_destroy, +}; + +struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe, + uint32_t size) +{ + struct msm_ringbuffer *msm_ring; + struct fd_ringbuffer *ring = NULL; + + msm_ring = calloc(1, sizeof(*msm_ring)); + if (!msm_ring) { + ERROR_MSG("allocation failed"); + goto fail; + } + + ring = &msm_ring->base; + ring->funcs = &funcs; + + list_inithead(&msm_ring->submit_list); + + msm_ring->ring_bo = fd_bo_new(pipe->dev, size, 0); + if (!msm_ring->ring_bo) { + ERROR_MSG("ringbuffer allocation failed"); + goto fail; + } + + return ring; +fail: + if (ring) + fd_ringbuffer_del(ring); + return NULL; +} -- cgit v1.2.3