diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_bufmgr_ttm.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915/intel_bufmgr_ttm.c | 950 |
1 files changed, 950 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_bufmgr_ttm.c b/src/mesa/drivers/dri/i915/intel_bufmgr_ttm.c new file mode 100644 index 00000000000..45a9aa3ed14 --- /dev/null +++ b/src/mesa/drivers/dri/i915/intel_bufmgr_ttm.c @@ -0,0 +1,950 @@ +/************************************************************************** + * + * Copyright � 2007 Intel Corporation + * 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 Hellstr�m <thomas-at-tungstengraphics-dot-com> + * Keith Whitwell <keithw-at-tungstengraphics-dot-com> + * Eric Anholt <[email protected]> + */ + +#include <xf86drm.h> +#include <stdlib.h> +#include <unistd.h> +#include "glthread.h" +#include "errno.h" +#include "mtypes.h" +#include "dri_bufmgr.h" +#include "string.h" +#include "imports.h" + +#include "i915_drm.h" + +#define BUFMGR_DEBUG 0 + +#define MAX_RELOCS_PER_LIST 511 +struct intel_reloc_info +{ + GLuint type; + GLuint reloc; + GLuint delta; /* not needed? */ + GLuint index; + drm_handle_t handle; +}; + +struct intel_bo_node +{ + drmMMListHead head; + drmBO *buf; + struct drm_i915_op_arg bo_arg; + unsigned long arg0; + unsigned long arg1; + void (*destroy)(void *); + void *priv; +}; + +struct intel_bo_reloc_list +{ + drmMMListHead head; + drmBO buf; + uint32_t *relocs; +}; + +struct intel_bo_reloc_node +{ + drmMMListHead head; + drm_handle_t handle; + uint32_t nr_reloc_types; + struct intel_bo_reloc_list type_list; +}; + +struct intel_bo_list { + unsigned numTarget; + unsigned numCurrent; + unsigned numOnList; + drmMMListHead list; + drmMMListHead free; + void (*destroy)(void *node); +}; + +typedef struct _dri_bufmgr_ttm { + dri_bufmgr bufmgr; + + int fd; + _glthread_Mutex mutex; + unsigned int fence_type; + unsigned int fence_type_flush; + + /** ttm relocation list */ + struct intel_bo_list list; + struct intel_bo_list reloc_list; + +} dri_bufmgr_ttm; + +typedef struct _dri_bo_ttm { + dri_bo bo; + + int refcount; /* Protected by bufmgr->mutex */ + drmBO drm_bo; + const char *name; + /** + * Note whether we are the owner of the buffer, to determine if we must + * drmBODestroy or drmBOUnreference to unreference the buffer. + */ + GLboolean owner; +} dri_bo_ttm; + +typedef struct _dri_fence_ttm +{ + dri_fence fence; + + int refcount; /* Protected by bufmgr->mutex */ + const char *name; + drmFence drm_fence; +} dri_fence_ttm; + + +static int i830AdjustListNodes(struct intel_bo_list *list) +{ + struct intel_bo_node *node; + drmMMListHead *l; + int ret = 0; + + while(list->numCurrent < list->numTarget) { + node = (struct intel_bo_node *) drmMalloc(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(struct intel_bo_node, l, head); + list->destroy(node); + list->numCurrent--; + } + return ret; +} + +void intel_bo_free_list(struct intel_bo_list *list) +{ + struct intel_bo_node *node; + drmMMListHead *l; + + l = list->list.next; + while(l != &list->list) { + DRMLISTDEL(l); + node = DRMLISTENTRY(struct intel_bo_node, l, head); + list->destroy(node); + l = list->list.next; + list->numCurrent--; + list->numOnList--; + } + + l = list->free.next; + while(l != &list->free) { + DRMLISTDEL(l); + node = DRMLISTENTRY(struct intel_bo_node, l, head); + list->destroy(node); + l = list->free.next; + list->numCurrent--; + } +} + +int intel_bo_reset_list(struct intel_bo_list *list) +{ + drmMMListHead *l; + int ret; + + ret = i830AdjustListNodes(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 i830AdjustListNodes(list); +} + +static void generic_destroy(void *nodep) +{ + free(nodep); +} + +int intel_create_bo_list(int numTarget, struct intel_bo_list *list, void (*destroy)(void *)) +{ + DRMINITLISTHEAD(&list->list); + DRMINITLISTHEAD(&list->free); + list->numTarget = numTarget; + list->numCurrent = 0; + list->numOnList = 0; + if (list->destroy) + list->destroy = destroy; + else + list->destroy = generic_destroy; + return i830AdjustListNodes(list); +} + + +struct drm_i915_op_arg * +intel_setup_validate_list(int fd, struct intel_bo_list *list, struct intel_bo_list *reloc_list) +{ + struct intel_bo_node *node; + struct intel_bo_reloc_node *rl_node; + drmMMListHead *l, *rl; + struct drm_i915_op_arg *arg, *first; + struct drm_bo_op_req *req; + uint64_t *prevNext = NULL; + + first = NULL; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(struct intel_bo_node, 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->bo_req.handle = node->buf->handle; + req->op = drm_bo_validate; + req->bo_req.flags = node->arg0; + req->bo_req.hint = 0; + req->bo_req.mask = node->arg1; + req->bo_req.fence_class = 0; /* Backwards compat. */ + arg->reloc_handle = 0; + + for (rl = reloc_list->list.next; rl != &reloc_list->list; rl = rl->next) { + rl_node = DRMLISTENTRY(struct intel_bo_reloc_node, rl, head); + + if (rl_node->handle == node->buf->handle) { + arg->reloc_handle = rl_node->type_list.buf.handle; + // drmBOUnmap(fd, &rl_node->type_list.buf); + } + } + } + + if (!first) + return 0; + + return first; +} + +void intel_free_validate_list(int fd, struct intel_bo_list *list) +{ + struct intel_bo_node *node; + drmMMListHead *l; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(struct intel_bo_node, l, head); + + if (node->destroy) + (*node->destroy)(node->priv); + + } +} + +void intel_free_reloc_list(int fd, struct intel_bo_list *reloc_list) +{ + struct intel_bo_reloc_node *reloc_node; + drmMMListHead *rl, *tmp; + + for (rl = reloc_list->list.next, tmp = rl->next; rl != &reloc_list->list; rl = tmp, tmp = rl->next) { + reloc_node = DRMLISTENTRY(struct intel_bo_reloc_node, rl, head); + + DRMLISTDEL(rl); + + if (reloc_node->nr_reloc_types > 1) { + + /* TODO */ + } + + drmBOUnmap(fd, &reloc_node->type_list.buf); + drmBODestroy(fd, &reloc_node->type_list.buf); + free(reloc_node); + } +} + +int intel_add_validate_buffer(struct intel_bo_list *list, dri_bo *buf, unsigned flags, + unsigned mask, int *itemLoc, void (*destroy_cb)(void *)) +{ + struct intel_bo_node *node, *cur; + drmMMListHead *l; + int count = 0; + int ret = 0; + drmBO *buf_bo = &((dri_bo_ttm *)buf)->drm_bo; + cur = NULL; + + for (l = list->list.next; l != &list->list; l = l->next) { + node = DRMLISTENTRY(struct intel_bo_node, l, head); + if (node->buf == buf_bo) { + cur = node; + break; + } + count++; + } + + if (!cur) { + cur = drmMalloc(sizeof(*cur)); + if (!cur) { + return -ENOMEM; + } + cur->buf = buf_bo; + cur->priv = buf; + cur->arg0 = flags; + cur->arg1 = mask; + cur->destroy = destroy_cb; + ret = 1; + + DRMLISTADDTAIL(&cur->head, &list->list); + + } else { + unsigned memMask = (cur->arg1 | mask) & DRM_BO_MASK_MEM; + unsigned memFlags = cur->arg0 & flags & memMask; + + if (!memFlags) { +#if 0 + ErrorF("Incompatible memory location requests " + "on validate list.\n"); + ErrorF("Previous flag: 0x%08lx, mask: 0x%08lx\n", + cur->arg0, cur->arg1); + ErrorF("Current flag: 0x%08lx, mask: 0x%08lx\n", + flags, mask); +#endif + return -EINVAL; + } + if (mask & cur->arg1 & ~DRM_BO_MASK_MEM & (cur->arg0 ^ flags)) { +#if 0 + ErrorF("Incompatible buffer flag requests " + "on validate list.\n"); + ErrorF("Previous flag: 0x%08lx, mask: 0x%08lx\n", + cur->arg0, cur->arg1); + ErrorF("Current flag: 0x%08lx, mask: 0x%08lx\n", + flags, mask); +#endif + return -EINVAL; + } + cur->arg1 |= mask; + cur->arg0 = memFlags | ((cur->arg0 | flags) & + cur->arg1 & ~DRM_BO_MASK_MEM); + } + *itemLoc = count; + return ret; +} + +#define RELOC0_STRIDE 4 +#define RELOC0_HEADER 4 +#define RELOC_BUF_SIZE ((RELOC0_HEADER + MAX_RELOCS_PER_LIST * RELOC0_STRIDE) * sizeof(uint32_t)) + +static int intel_create_new_reloc_type_list(int fd, struct intel_bo_reloc_list *cur_type) +{ + int ret; + + /* should allocate a drmBO here */ + ret = drmBOCreate(fd, 0, RELOC_BUF_SIZE, 0, + NULL, drm_bo_type_dc, + DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_MAPPABLE | DRM_BO_FLAG_CACHED, + 0, &cur_type->buf); + if (ret) + return ret; + + ret = drmBOMap(fd, &cur_type->buf, DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0, (void **)&cur_type->relocs); + if (ret) + return ret; + return 0; +} + + +int intel_add_validate_reloc(int fd, struct intel_bo_list *reloc_list, struct intel_reloc_info *reloc_info) +{ + struct intel_bo_reloc_node *rl_node, *cur; + drmMMListHead *rl, *l; + int ret = 0; + uint32_t *reloc_start; + int num_relocs; + struct intel_bo_reloc_list *cur_type; + + cur = NULL; + + for (rl = reloc_list->list.next; rl != &reloc_list->list; rl = rl->next) { + rl_node = DRMLISTENTRY(struct intel_bo_reloc_node, rl, head); + if (rl_node->handle == reloc_info->handle) { + cur = rl_node; + break; + + } + } + + if (!cur) { + + cur = malloc(sizeof(*cur)); + if (!cur) + return -ENOMEM; + + cur->nr_reloc_types = 1; + cur->handle = reloc_info->handle; + cur_type = &cur->type_list; + + DRMINITLISTHEAD(&cur->type_list.head); + ret = intel_create_new_reloc_type_list(fd, cur_type); + if (ret) { + return -1; + } + DRMLISTADDTAIL(&cur->head, &reloc_list->list); + + cur_type->relocs[0] = 0 | (reloc_info->type << 16); + cur_type->relocs[1] = 0; // next reloc buffer handle is 0 + + } else { + int found = 0; + if ((cur->type_list.relocs[0] >> 16) == reloc_info->type) { + cur_type = &cur->type_list; + found = 1; + } else { + for (l = cur->type_list.head.next; l != &cur->type_list.head; l = l->next) { + cur_type = DRMLISTENTRY(struct intel_bo_reloc_list, l, head); + if (((cur_type->relocs[0] >> 16) & 0xffff) == reloc_info->type) + found = 1; + break; + } + } + + /* didn't find the relocation type */ + if (!found) { + cur_type = malloc(sizeof(*cur_type)); + if (!cur_type) { + return -ENOMEM; + } + + ret = intel_create_new_reloc_type_list(fd, cur_type); + DRMLISTADDTAIL(&cur_type->head, &cur->type_list.head); + + cur_type->relocs[0] = (reloc_info->type << 16); + cur_type->relocs[1] = 0; + + // cur->relocs[cur->nr_reloc_lists-1][1] = 0;// TODO ADD HANDLE HERE + + cur->nr_reloc_types++; + } + } + + reloc_start = cur_type->relocs; + + num_relocs = (reloc_start[0] & 0xffff); + + reloc_start[num_relocs*RELOC0_STRIDE + RELOC0_HEADER] = reloc_info->reloc; + reloc_start[num_relocs*RELOC0_STRIDE + RELOC0_HEADER+1] = reloc_info->delta; + reloc_start[num_relocs*RELOC0_STRIDE + RELOC0_HEADER+2] = reloc_info->index; + reloc_start[0]++; + if (((reloc_start[0] & 0xffff)) > (MAX_RELOCS_PER_LIST)) { + return -ENOMEM; + } + return 0; +} + + +#if 0 +int +driFenceSignaled(DriFenceObject * fence, unsigned type) +{ + int signaled; + int ret; + + if (fence == NULL) + return GL_TRUE; + + _glthread_LOCK_MUTEX(fence->mutex); + ret = drmFenceSignaled(bufmgr_ttm->fd, &fence->fence, type, &signaled); + _glthread_UNLOCK_MUTEX(fence->mutex); + BM_CKFATAL(ret); + return signaled; +} +#endif + +static dri_bo * +dri_ttm_alloc(dri_bufmgr *bufmgr, const char *name, + unsigned long size, unsigned int alignment, + unsigned int location_mask) +{ + dri_bufmgr_ttm *ttm_bufmgr; + dri_bo_ttm *ttm_buf; + unsigned int pageSize = getpagesize(); + int ret; + unsigned int flags, hint; + + ttm_bufmgr = (dri_bufmgr_ttm *)bufmgr; + + ttm_buf = malloc(sizeof(*ttm_buf)); + if (!ttm_buf) + return NULL; + + /* The mask argument doesn't do anything for us that we want other than + * determine which pool (TTM or local) the buffer is allocated into, so just + * pass all of the allocation class flags. + */ + flags = location_mask | DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | + DRM_BO_FLAG_EXE; + /* No hints we want to use. */ + hint = 0; + + ret = drmBOCreate(ttm_bufmgr->fd, 0, size, alignment / pageSize, + NULL, drm_bo_type_dc, + flags, hint, &ttm_buf->drm_bo); + if (ret != 0) { + free(ttm_buf); + return NULL; + } + ttm_buf->bo.size = ttm_buf->drm_bo.size; + ttm_buf->bo.offset = ttm_buf->drm_bo.offset; + ttm_buf->bo.virtual = NULL; + ttm_buf->bo.bufmgr = bufmgr; + ttm_buf->name = name; + ttm_buf->refcount = 1; + ttm_buf->owner = GL_TRUE; + +#if BUFMGR_DEBUG + fprintf(stderr, "bo_create: %p (%s)\n", &ttm_buf->bo, ttm_buf->name); +#endif + + return &ttm_buf->bo; +} + +/* Our TTM backend doesn't allow creation of static buffers, as that requires + * privelege for the non-fake case, and the lock in the fake case where we were + * working around the X Server not creating buffers and passing handles to us. + */ +static dri_bo * +dri_ttm_alloc_static(dri_bufmgr *bufmgr, const char *name, + unsigned long offset, unsigned long size, void *virtual, + unsigned int location_mask) +{ + return NULL; +} + +/** Returns a dri_bo wrapping the given buffer object handle. + * + * This can be used when one application needs to pass a buffer object + * to another. + */ +dri_bo * +intel_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name, + unsigned int handle) +{ + dri_bufmgr_ttm *ttm_bufmgr; + dri_bo_ttm *ttm_buf; + int ret; + + ttm_bufmgr = (dri_bufmgr_ttm *)bufmgr; + + ttm_buf = malloc(sizeof(*ttm_buf)); + if (!ttm_buf) + return NULL; + + ret = drmBOReference(ttm_bufmgr->fd, handle, &ttm_buf->drm_bo); + if (ret != 0) { + free(ttm_buf); + return NULL; + } + ttm_buf->bo.size = ttm_buf->drm_bo.size; + ttm_buf->bo.offset = ttm_buf->drm_bo.offset; + ttm_buf->bo.virtual = NULL; + ttm_buf->bo.bufmgr = bufmgr; + ttm_buf->name = name; + ttm_buf->refcount = 1; + ttm_buf->owner = GL_FALSE; + +#if BUFMGR_DEBUG + fprintf(stderr, "bo_create_from_handle: %p (%s)\n", &ttm_buf->bo, + ttm_buf->name); +#endif + + return &ttm_buf->bo; +} + +static void +dri_ttm_bo_reference(dri_bo *buf) +{ + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr; + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf; + + _glthread_LOCK_MUTEX(bufmgr_ttm->mutex); + ttm_buf->refcount++; + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); +} + +static void +dri_ttm_bo_unreference(dri_bo *buf) +{ + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr; + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf; + + if (!buf) + return; + + _glthread_LOCK_MUTEX(bufmgr_ttm->mutex); + if (--ttm_buf->refcount == 0) { + int ret; + + /* XXX Having to use drmBODestroy as the opposite of drmBOCreate instead + * of simply unreferencing is madness, and leads to behaviors we may not + * want (making the buffer unsharable). + */ + if (ttm_buf->owner) + ret = drmBODestroy(bufmgr_ttm->fd, &ttm_buf->drm_bo); + else + ret = drmBOUnReference(bufmgr_ttm->fd, &ttm_buf->drm_bo); + if (ret != 0) { + fprintf(stderr, "drmBOUnReference failed (%s): %s\n", ttm_buf->name, + strerror(-ret)); + } +#if BUFMGR_DEBUG + fprintf(stderr, "bo_unreference final: %p (%s)\n", + &ttm_buf->bo, ttm_buf->name); +#endif + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); + free(buf); + return; + } + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); +} + +static int +dri_ttm_bo_map(dri_bo *buf, GLboolean write_enable) +{ + dri_bufmgr_ttm *bufmgr_ttm; + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf; + unsigned int flags; + + bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr; + + flags = DRM_BO_FLAG_READ; + if (write_enable) + flags |= DRM_BO_FLAG_WRITE; + + assert(buf->virtual == NULL); + +#if BUFMGR_DEBUG + fprintf(stderr, "bo_map: %p (%s)\n", &ttm_buf->bo, ttm_buf->name); +#endif + + return drmBOMap(bufmgr_ttm->fd, &ttm_buf->drm_bo, flags, 0, &buf->virtual); +} + +static int +dri_ttm_bo_unmap(dri_bo *buf) +{ + dri_bufmgr_ttm *bufmgr_ttm; + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf; + + if (buf == NULL) + return 0; + + bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr; + + assert(buf->virtual != NULL); + + buf->virtual = NULL; + +#if BUFMGR_DEBUG + fprintf(stderr, "bo_unmap: %p (%s)\n", &ttm_buf->bo, ttm_buf->name); +#endif + + return drmBOUnmap(bufmgr_ttm->fd, &ttm_buf->drm_bo); +} + +static int +dri_ttm_validate(dri_bo *buf, unsigned int flags) +{ + dri_bufmgr_ttm *bufmgr_ttm; + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf; + unsigned int mask; + int err; + + /* XXX: Sanity-check whether we've already validated this one under + * different flags. See drmAddValidateItem(). + */ + + bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr; + + /* Calculate the appropriate mask to pass to the DRM. There appears to be + * be a direct relationship to flags, so it's unnecessary to have it passed + * in as an argument. + */ + mask = DRM_BO_MASK_MEM; + mask |= flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_EXE); + + err = drmBOValidate(bufmgr_ttm->fd, &ttm_buf->drm_bo, 0, flags, mask, 0); + + if (err == 0) { + /* XXX: add to fence list for sanity checking */ + } else { + fprintf(stderr, "failed to validate buffer (%s): %s\n", + ttm_buf->name, strerror(-err)); + } + + buf->offset = ttm_buf->drm_bo.offset; + +#if BUFMGR_DEBUG + fprintf(stderr, "bo_validate: %p (%s)\n", &ttm_buf->bo, ttm_buf->name); +#endif + + return err; +} + +static dri_fence * +dri_ttm_fence_validated(dri_bufmgr *bufmgr, const char *name, + GLboolean flushed) +{ + dri_fence_ttm *fence_ttm = malloc(sizeof(*fence_ttm)); + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)bufmgr; + int ret; + unsigned int type; + + if (!fence_ttm) + return NULL; + + if (flushed) + type = bufmgr_ttm->fence_type_flush; + else + type = bufmgr_ttm->fence_type; + + fence_ttm->refcount = 1; + fence_ttm->name = name; + fence_ttm->fence.bufmgr = bufmgr; + ret = drmFenceBuffers(bufmgr_ttm->fd, type, 0, &fence_ttm->drm_fence); + if (ret) { + fprintf(stderr, "failed to fence (%s): %s\n", name, strerror(-ret)); + free(fence_ttm); + return NULL; + } + +#if BUFMGR_DEBUG + fprintf(stderr, "fence_validated: %p (%s)\n", &fence_ttm->fence, + fence_ttm->name); +#endif + + return &fence_ttm->fence; +} + +static void +dri_ttm_fence_reference(dri_fence *fence) +{ + dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence; + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr; + + _glthread_LOCK_MUTEX(bufmgr_ttm->mutex); + ++fence_ttm->refcount; + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); +} + +static void +dri_ttm_fence_unreference(dri_fence *fence) +{ + dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence; + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr; + + if (!fence) + return; + + _glthread_LOCK_MUTEX(bufmgr_ttm->mutex); + if (--fence_ttm->refcount == 0) { + int ret; + + /* XXX Having to use drmFenceDestroy as the opposite of drmFenceBuffers + * instead of simply unreferencing is madness, and leads to behaviors we + * may not want (making the fence unsharable). This behavior by the DRM + * ioctls should be fixed, and drmFenceDestroy eliminated. + */ + ret = drmFenceDestroy(bufmgr_ttm->fd, &fence_ttm->drm_fence); + if (ret != 0) { + fprintf(stderr, "drmFenceDestroy failed (%s): %s\n", + fence_ttm->name, strerror(-ret)); + } + + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); + free(fence); + return; + } + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); +} + +static void +dri_ttm_fence_wait(dri_fence *fence) +{ + dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence; + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr; + int ret; + + _glthread_LOCK_MUTEX(bufmgr_ttm->mutex); + ret = drmFenceWait(bufmgr_ttm->fd, 0, &fence_ttm->drm_fence, 0); + _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex); + if (ret != 0) { + _mesa_printf("%s:%d: Error %d waiting for fence %s.\n", + __FILE__, __LINE__, ret, fence_ttm->name); + abort(); + } + +#if BUFMGR_DEBUG + fprintf(stderr, "fence_wait: %p (%s)\n", &fence_ttm->fence, + fence_ttm->name); +#endif +} + +static void +dri_bufmgr_ttm_destroy(dri_bufmgr *bufmgr) +{ + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)bufmgr; + + _glthread_DESTROY_MUTEX(bufmgr_ttm->mutex); + free(bufmgr); +} + + +static void intel_dribo_destroy_callback(void *priv) +{ + dri_bo *dribo = priv; + + if (dribo) { + dri_bo_unreference(dribo); + } +} + +static void +dri_ttm_emit_reloc(dri_bo *batch_buf, GLuint flags, GLuint delta, GLuint offset, + dri_bo *relocatee) +{ + dri_bo_ttm *ttm_buf = (dri_bo_ttm *)batch_buf; + dri_bo_ttm *relocatee_buf = (dri_bo_ttm *)relocatee; + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)batch_buf->bufmgr; + int newItem; + struct intel_reloc_info reloc; + + intel_add_validate_buffer(&bufmgr_ttm->list, relocatee, flags, flags, &newItem, intel_dribo_destroy_callback); + + reloc.type = I915_RELOC_TYPE_0; + reloc.reloc = offset; + reloc.delta = delta; + reloc.index = newItem; + reloc.handle = ttm_buf->drm_bo.handle; + + intel_add_validate_reloc(bufmgr_ttm->fd, &bufmgr_ttm->reloc_list, &reloc); + return; +} + + +static void * +dri_ttm_process_reloc(dri_bo *batch_buf, GLuint *hack) +{ + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)batch_buf->bufmgr; + void *ptr; + int itemLoc; + + intel_add_validate_buffer(&bufmgr_ttm->list, batch_buf, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_EXE, + DRM_BO_MASK_MEM | DRM_BO_FLAG_EXE, &itemLoc, NULL); + + ptr = intel_setup_validate_list(bufmgr_ttm->fd, &bufmgr_ttm->list, &bufmgr_ttm->reloc_list); + + *hack = ((dri_bo_ttm *)batch_buf)->drm_bo.handle; + return ptr; +} + +static void +dri_ttm_post_submit(dri_bo *batch_buf, dri_fence **last_fence) +{ + dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)batch_buf->bufmgr; + + intel_free_validate_list(bufmgr_ttm->fd, &bufmgr_ttm->list); + intel_free_reloc_list(bufmgr_ttm->fd, &bufmgr_ttm->reloc_list); + + /* + + bb->fence.handle = execbuf.fence_arg.handle; + bb->fence.fence_class = execbuf.fence_arg.fence_class; + bb->fence.type = execbuf.fence_arg.type; + bb->fence.flags = execbuf.fence_arg.flags; + bb->fence.signaled = 0; + */ +} + +/** + * Initializes the TTM buffer manager, which uses the kernel to allocate, map, + * and manage map buffer objections. + * + * \param fd File descriptor of the opened DRM device. + * \param fence_type Driver-specific fence type used for fences with no flush. + * \param fence_type_flush Driver-specific fence type used for fences with a + * flush. + */ +dri_bufmgr * +intel_bufmgr_ttm_init(int fd, unsigned int fence_type, + unsigned int fence_type_flush) +{ + dri_bufmgr_ttm *bufmgr_ttm; + + bufmgr_ttm = malloc(sizeof(*bufmgr_ttm)); + bufmgr_ttm->fd = fd; + bufmgr_ttm->fence_type = fence_type; + bufmgr_ttm->fence_type_flush = fence_type_flush; + _glthread_INIT_MUTEX(bufmgr_ttm->mutex); + + intel_create_bo_list(40, &bufmgr_ttm->list, NULL); + intel_create_bo_list(1, &bufmgr_ttm->reloc_list, NULL); + + bufmgr_ttm->bufmgr.bo_alloc = dri_ttm_alloc; + bufmgr_ttm->bufmgr.bo_alloc_static = dri_ttm_alloc_static; + bufmgr_ttm->bufmgr.bo_reference = dri_ttm_bo_reference; + bufmgr_ttm->bufmgr.bo_unreference = dri_ttm_bo_unreference; + bufmgr_ttm->bufmgr.bo_map = dri_ttm_bo_map; + bufmgr_ttm->bufmgr.bo_unmap = dri_ttm_bo_unmap; + bufmgr_ttm->bufmgr.bo_validate = dri_ttm_validate; + bufmgr_ttm->bufmgr.fence_validated = dri_ttm_fence_validated; + bufmgr_ttm->bufmgr.fence_reference = dri_ttm_fence_reference; + bufmgr_ttm->bufmgr.fence_unreference = dri_ttm_fence_unreference; + bufmgr_ttm->bufmgr.fence_wait = dri_ttm_fence_wait; + bufmgr_ttm->bufmgr.destroy = dri_bufmgr_ttm_destroy; + bufmgr_ttm->bufmgr.emit_reloc = dri_ttm_emit_reloc; + bufmgr_ttm->bufmgr.process_relocs = dri_ttm_process_reloc; + bufmgr_ttm->bufmgr.post_submit = dri_ttm_post_submit; + return &bufmgr_ttm->bufmgr; +} + |