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-rw-r--r--radeon/radeon_cs_gem.c556
1 files changed, 556 insertions, 0 deletions
diff --git a/radeon/radeon_cs_gem.c b/radeon/radeon_cs_gem.c
new file mode 100644
index 0000000..ef070c6
--- /dev/null
+++ b/radeon/radeon_cs_gem.c
@@ -0,0 +1,556 @@
+/*
+ * Copyright © 2008 Jérôme Glisse
+ * 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:
+ * Aapo Tahkola <aet@rasterburn.org>
+ * Nicolai Haehnle <prefect_@gmx.net>
+ * Jérôme Glisse <glisse@freedesktop.org>
+ */
+#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <sys/ioctl.h>
+#include "radeon_cs.h"
+#include "radeon_cs_int.h"
+#include "radeon_bo_int.h"
+#include "radeon_cs_gem.h"
+#include "radeon_bo_gem.h"
+#include "drm.h"
+#include "libdrm_macros.h"
+#include "xf86drm.h"
+#include "xf86atomic.h"
+#include "radeon_drm.h"
+
+/* Add LIBDRM_RADEON_BOF_FILES to libdrm_radeon_la_SOURCES when building with BOF_DUMP */
+#define CS_BOF_DUMP 0
+#if CS_BOF_DUMP
+#include "bof.h"
+#endif
+
+struct radeon_cs_manager_gem {
+ struct radeon_cs_manager base;
+ uint32_t device_id;
+ unsigned nbof;
+};
+
+#pragma pack(1)
+struct cs_reloc_gem {
+ uint32_t handle;
+ uint32_t read_domain;
+ uint32_t write_domain;
+ uint32_t flags;
+};
+
+#pragma pack()
+#define RELOC_SIZE (sizeof(struct cs_reloc_gem) / sizeof(uint32_t))
+
+struct cs_gem {
+ struct radeon_cs_int base;
+ struct drm_radeon_cs cs;
+ struct drm_radeon_cs_chunk chunks[2];
+ unsigned nrelocs;
+ uint32_t *relocs;
+ struct radeon_bo_int **relocs_bo;
+};
+
+static pthread_mutex_t id_mutex = PTHREAD_MUTEX_INITIALIZER;
+static uint32_t cs_id_source = 0;
+
+/**
+ * result is undefined if called with ~0
+ */
+static uint32_t get_first_zero(const uint32_t n)
+{
+ /* __builtin_ctz returns number of trailing zeros. */
+ return 1 << __builtin_ctz(~n);
+}
+
+/**
+ * Returns a free id for cs.
+ * If there is no free id we return zero
+ **/
+static uint32_t generate_id(void)
+{
+ uint32_t r = 0;
+ pthread_mutex_lock( &id_mutex );
+ /* check for free ids */
+ if (cs_id_source != ~r) {
+ /* find first zero bit */
+ r = get_first_zero(cs_id_source);
+
+ /* set id as reserved */
+ cs_id_source |= r;
+ }
+ pthread_mutex_unlock( &id_mutex );
+ return r;
+}
+
+/**
+ * Free the id for later reuse
+ **/
+static void free_id(uint32_t id)
+{
+ pthread_mutex_lock( &id_mutex );
+
+ cs_id_source &= ~id;
+
+ pthread_mutex_unlock( &id_mutex );
+}
+
+static struct radeon_cs_int *cs_gem_create(struct radeon_cs_manager *csm,
+ uint32_t ndw)
+{
+ struct cs_gem *csg;
+
+ /* max cmd buffer size is 64Kb */
+ if (ndw > (64 * 1024 / 4)) {
+ return NULL;
+ }
+ csg = (struct cs_gem*)calloc(1, sizeof(struct cs_gem));
+ if (csg == NULL) {
+ return NULL;
+ }
+ csg->base.csm = csm;
+ csg->base.ndw = 64 * 1024 / 4;
+ csg->base.packets = (uint32_t*)calloc(1, 64 * 1024);
+ if (csg->base.packets == NULL) {
+ free(csg);
+ return NULL;
+ }
+ csg->base.relocs_total_size = 0;
+ csg->base.crelocs = 0;
+ csg->base.id = generate_id();
+ csg->nrelocs = 4096 / (4 * 4) ;
+ csg->relocs_bo = (struct radeon_bo_int**)calloc(1,
+ csg->nrelocs*sizeof(void*));
+ if (csg->relocs_bo == NULL) {
+ free(csg->base.packets);
+ free(csg);
+ return NULL;
+ }
+ csg->base.relocs = csg->relocs = (uint32_t*)calloc(1, 4096);
+ if (csg->relocs == NULL) {
+ free(csg->relocs_bo);
+ free(csg->base.packets);
+ free(csg);
+ return NULL;
+ }
+ csg->chunks[0].chunk_id = RADEON_CHUNK_ID_IB;
+ csg->chunks[0].length_dw = 0;
+ csg->chunks[0].chunk_data = (uint64_t)(uintptr_t)csg->base.packets;
+ csg->chunks[1].chunk_id = RADEON_CHUNK_ID_RELOCS;
+ csg->chunks[1].length_dw = 0;
+ csg->chunks[1].chunk_data = (uint64_t)(uintptr_t)csg->relocs;
+ return (struct radeon_cs_int*)csg;
+}
+
+static int cs_gem_write_reloc(struct radeon_cs_int *cs,
+ struct radeon_bo *bo,
+ uint32_t read_domain,
+ uint32_t write_domain,
+ uint32_t flags)
+{
+ struct radeon_bo_int *boi = (struct radeon_bo_int *)bo;
+ struct cs_gem *csg = (struct cs_gem*)cs;
+ struct cs_reloc_gem *reloc;
+ uint32_t idx;
+ unsigned i;
+
+ assert(boi->space_accounted);
+
+ /* check domains */
+ if ((read_domain && write_domain) || (!read_domain && !write_domain)) {
+ /* in one CS a bo can only be in read or write domain but not
+ * in read & write domain at the same time
+ */
+ return -EINVAL;
+ }
+ if (read_domain == RADEON_GEM_DOMAIN_CPU) {
+ return -EINVAL;
+ }
+ if (write_domain == RADEON_GEM_DOMAIN_CPU) {
+ return -EINVAL;
+ }
+ /* use bit field hash function to determine
+ if this bo is for sure not in this cs.*/
+ if ((atomic_read((atomic_t *)radeon_gem_get_reloc_in_cs(bo)) & cs->id)) {
+ /* check if bo is already referenced.
+ * Scanning from end to begin reduces cycles with mesa because
+ * it often relocates same shared dma bo again. */
+ for(i = cs->crelocs; i != 0;) {
+ --i;
+ idx = i * RELOC_SIZE;
+ reloc = (struct cs_reloc_gem*)&csg->relocs[idx];
+ if (reloc->handle == bo->handle) {
+ /* Check domains must be in read or write. As we check already
+ * checked that in argument one of the read or write domain was
+ * set we only need to check that if previous reloc as the read
+ * domain set then the read_domain should also be set for this
+ * new relocation.
+ */
+ /* the DDX expects to read and write from same pixmap */
+ if (write_domain && (reloc->read_domain & write_domain)) {
+ reloc->read_domain = 0;
+ reloc->write_domain = write_domain;
+ } else if (read_domain & reloc->write_domain) {
+ reloc->read_domain = 0;
+ } else {
+ if (write_domain != reloc->write_domain)
+ return -EINVAL;
+ if (read_domain != reloc->read_domain)
+ return -EINVAL;
+ }
+
+ reloc->read_domain |= read_domain;
+ reloc->write_domain |= write_domain;
+ /* update flags */
+ reloc->flags |= (flags & reloc->flags);
+ /* write relocation packet */
+ radeon_cs_write_dword((struct radeon_cs *)cs, 0xc0001000);
+ radeon_cs_write_dword((struct radeon_cs *)cs, idx);
+ return 0;
+ }
+ }
+ }
+ /* new relocation */
+ if (csg->base.crelocs >= csg->nrelocs) {
+ /* allocate more memory (TODO: should use a slab allocator maybe) */
+ uint32_t *tmp, size;
+ size = ((csg->nrelocs + 1) * sizeof(struct radeon_bo*));
+ tmp = (uint32_t*)realloc(csg->relocs_bo, size);
+ if (tmp == NULL) {
+ return -ENOMEM;
+ }
+ csg->relocs_bo = (struct radeon_bo_int **)tmp;
+ size = ((csg->nrelocs + 1) * RELOC_SIZE * 4);
+ tmp = (uint32_t*)realloc(csg->relocs, size);
+ if (tmp == NULL) {
+ return -ENOMEM;
+ }
+ cs->relocs = csg->relocs = tmp;
+ csg->nrelocs += 1;
+ csg->chunks[1].chunk_data = (uint64_t)(uintptr_t)csg->relocs;
+ }
+ csg->relocs_bo[csg->base.crelocs] = boi;
+ idx = (csg->base.crelocs++) * RELOC_SIZE;
+ reloc = (struct cs_reloc_gem*)&csg->relocs[idx];
+ reloc->handle = bo->handle;
+ reloc->read_domain = read_domain;
+ reloc->write_domain = write_domain;
+ reloc->flags = flags;
+ csg->chunks[1].length_dw += RELOC_SIZE;
+ radeon_bo_ref(bo);
+ /* bo might be referenced from another context so have to use atomic operations */
+ atomic_add((atomic_t *)radeon_gem_get_reloc_in_cs(bo), cs->id);
+ cs->relocs_total_size += boi->size;
+ radeon_cs_write_dword((struct radeon_cs *)cs, 0xc0001000);
+ radeon_cs_write_dword((struct radeon_cs *)cs, idx);
+ return 0;
+}
+
+static int cs_gem_begin(struct radeon_cs_int *cs,
+ uint32_t ndw,
+ const char *file,
+ const char *func,
+ int line)
+{
+
+ if (cs->section_ndw) {
+ fprintf(stderr, "CS already in a section(%s,%s,%d)\n",
+ cs->section_file, cs->section_func, cs->section_line);
+ fprintf(stderr, "CS can't start section(%s,%s,%d)\n",
+ file, func, line);
+ return -EPIPE;
+ }
+ cs->section_ndw = ndw;
+ cs->section_cdw = 0;
+ cs->section_file = file;
+ cs->section_func = func;
+ cs->section_line = line;
+
+ if (cs->cdw + ndw > cs->ndw) {
+ uint32_t tmp, *ptr;
+
+ /* round up the required size to a multiple of 1024 */
+ tmp = (cs->cdw + ndw + 0x3FF) & (~0x3FF);
+ ptr = (uint32_t*)realloc(cs->packets, 4 * tmp);
+ if (ptr == NULL) {
+ return -ENOMEM;
+ }
+ cs->packets = ptr;
+ cs->ndw = tmp;
+ }
+ return 0;
+}
+
+static int cs_gem_end(struct radeon_cs_int *cs,
+ const char *file,
+ const char *func,
+ int line)
+
+{
+ if (!cs->section_ndw) {
+ fprintf(stderr, "CS no section to end at (%s,%s,%d)\n",
+ file, func, line);
+ return -EPIPE;
+ }
+ if (cs->section_ndw != cs->section_cdw) {
+ fprintf(stderr, "CS section size mismatch start at (%s,%s,%d) %d vs %d\n",
+ cs->section_file, cs->section_func, cs->section_line, cs->section_ndw, cs->section_cdw);
+ fprintf(stderr, "CS section end at (%s,%s,%d)\n",
+ file, func, line);
+
+ /* We must reset the section even when there is error. */
+ cs->section_ndw = 0;
+ return -EPIPE;
+ }
+ cs->section_ndw = 0;
+ return 0;
+}
+
+#if CS_BOF_DUMP
+static void cs_gem_dump_bof(struct radeon_cs_int *cs)
+{
+ struct cs_gem *csg = (struct cs_gem*)cs;
+ struct radeon_cs_manager_gem *csm;
+ bof_t *bcs, *blob, *array, *bo, *size, *handle, *device_id, *root;
+ char tmp[256];
+ unsigned i;
+
+ csm = (struct radeon_cs_manager_gem *)cs->csm;
+ root = device_id = bcs = blob = array = bo = size = handle = NULL;
+ root = bof_object();
+ if (root == NULL)
+ goto out_err;
+ device_id = bof_int32(csm->device_id);
+ if (device_id == NULL)
+ return;
+ if (bof_object_set(root, "device_id", device_id))
+ goto out_err;
+ bof_decref(device_id);
+ device_id = NULL;
+ /* dump relocs */
+ blob = bof_blob(csg->nrelocs * 16, csg->relocs);
+ if (blob == NULL)
+ goto out_err;
+ if (bof_object_set(root, "reloc", blob))
+ goto out_err;
+ bof_decref(blob);
+ blob = NULL;
+ /* dump cs */
+ blob = bof_blob(cs->cdw * 4, cs->packets);
+ if (blob == NULL)
+ goto out_err;
+ if (bof_object_set(root, "pm4", blob))
+ goto out_err;
+ bof_decref(blob);
+ blob = NULL;
+ /* dump bo */
+ array = bof_array();
+ if (array == NULL)
+ goto out_err;
+ for (i = 0; i < csg->base.crelocs; i++) {
+ bo = bof_object();
+ if (bo == NULL)
+ goto out_err;
+ size = bof_int32(csg->relocs_bo[i]->size);
+ if (size == NULL)
+ goto out_err;
+ if (bof_object_set(bo, "size", size))
+ goto out_err;
+ bof_decref(size);
+ size = NULL;
+ handle = bof_int32(csg->relocs_bo[i]->handle);
+ if (handle == NULL)
+ goto out_err;
+ if (bof_object_set(bo, "handle", handle))
+ goto out_err;
+ bof_decref(handle);
+ handle = NULL;
+ radeon_bo_map((struct radeon_bo*)csg->relocs_bo[i], 0);
+ blob = bof_blob(csg->relocs_bo[i]->size, csg->relocs_bo[i]->ptr);
+ radeon_bo_unmap((struct radeon_bo*)csg->relocs_bo[i]);
+ if (blob == NULL)
+ goto out_err;
+ if (bof_object_set(bo, "data", blob))
+ goto out_err;
+ bof_decref(blob);
+ blob = NULL;
+ if (bof_array_append(array, bo))
+ goto out_err;
+ bof_decref(bo);
+ bo = NULL;
+ }
+ if (bof_object_set(root, "bo", array))
+ goto out_err;
+ sprintf(tmp, "d-0x%04X-%08d.bof", csm->device_id, csm->nbof++);
+ bof_dump_file(root, tmp);
+out_err:
+ bof_decref(blob);
+ bof_decref(array);
+ bof_decref(bo);
+ bof_decref(size);
+ bof_decref(handle);
+ bof_decref(device_id);
+ bof_decref(root);
+}
+#endif
+
+static int cs_gem_emit(struct radeon_cs_int *cs)
+{
+ struct cs_gem *csg = (struct cs_gem*)cs;
+ uint64_t chunk_array[2];
+ unsigned i;
+ int r;
+
+ while (cs->cdw & 7)
+ radeon_cs_write_dword((struct radeon_cs *)cs, 0x80000000);
+
+#if CS_BOF_DUMP
+ cs_gem_dump_bof(cs);
+#endif
+ csg->chunks[0].length_dw = cs->cdw;
+
+ chunk_array[0] = (uint64_t)(uintptr_t)&csg->chunks[0];
+ chunk_array[1] = (uint64_t)(uintptr_t)&csg->chunks[1];
+
+ csg->cs.num_chunks = 2;
+ csg->cs.chunks = (uint64_t)(uintptr_t)chunk_array;
+
+ r = drmCommandWriteRead(cs->csm->fd, DRM_RADEON_CS,
+ &csg->cs, sizeof(struct drm_radeon_cs));
+ for (i = 0; i < csg->base.crelocs; i++) {
+ csg->relocs_bo[i]->space_accounted = 0;
+ /* bo might be referenced from another context so have to use atomic operations */
+ atomic_dec((atomic_t *)radeon_gem_get_reloc_in_cs((struct radeon_bo*)csg->relocs_bo[i]), cs->id);
+ radeon_bo_unref((struct radeon_bo *)csg->relocs_bo[i]);
+ csg->relocs_bo[i] = NULL;
+ }
+
+ cs->csm->read_used = 0;
+ cs->csm->vram_write_used = 0;
+ cs->csm->gart_write_used = 0;
+ return r;
+}
+
+static int cs_gem_destroy(struct radeon_cs_int *cs)
+{
+ struct cs_gem *csg = (struct cs_gem*)cs;
+
+ free_id(cs->id);
+ free(csg->relocs_bo);
+ free(cs->relocs);
+ free(cs->packets);
+ free(cs);
+ return 0;
+}
+
+static int cs_gem_erase(struct radeon_cs_int *cs)
+{
+ struct cs_gem *csg = (struct cs_gem*)cs;
+ unsigned i;
+
+ if (csg->relocs_bo) {
+ for (i = 0; i < csg->base.crelocs; i++) {
+ if (csg->relocs_bo[i]) {
+ /* bo might be referenced from another context so have to use atomic operations */
+ atomic_dec((atomic_t *)radeon_gem_get_reloc_in_cs((struct radeon_bo*)csg->relocs_bo[i]), cs->id);
+ radeon_bo_unref((struct radeon_bo *)csg->relocs_bo[i]);
+ csg->relocs_bo[i] = NULL;
+ }
+ }
+ }
+ cs->relocs_total_size = 0;
+ cs->cdw = 0;
+ cs->section_ndw = 0;
+ cs->crelocs = 0;
+ csg->chunks[0].length_dw = 0;
+ csg->chunks[1].length_dw = 0;
+ return 0;
+}
+
+static int cs_gem_need_flush(struct radeon_cs_int *cs)
+{
+ return 0; //(cs->relocs_total_size > (32*1024*1024));
+}
+
+static void cs_gem_print(struct radeon_cs_int *cs, FILE *file)
+{
+ struct radeon_cs_manager_gem *csm;
+ unsigned int i;
+
+ csm = (struct radeon_cs_manager_gem *)cs->csm;
+ fprintf(file, "VENDORID:DEVICEID 0x%04X:0x%04X\n", 0x1002, csm->device_id);
+ for (i = 0; i < cs->cdw; i++) {
+ fprintf(file, "0x%08X\n", cs->packets[i]);
+ }
+}
+
+static const struct radeon_cs_funcs radeon_cs_gem_funcs = {
+ .cs_create = cs_gem_create,
+ .cs_write_reloc = cs_gem_write_reloc,
+ .cs_begin = cs_gem_begin,
+ .cs_end = cs_gem_end,
+ .cs_emit = cs_gem_emit,
+ .cs_destroy = cs_gem_destroy,
+ .cs_erase = cs_gem_erase,
+ .cs_need_flush = cs_gem_need_flush,
+ .cs_print = cs_gem_print,
+};
+
+static int radeon_get_device_id(int fd, uint32_t *device_id)
+{
+ struct drm_radeon_info info = {};
+ int r;
+
+ *device_id = 0;
+ info.request = RADEON_INFO_DEVICE_ID;
+ info.value = (uintptr_t)device_id;
+ r = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info,
+ sizeof(struct drm_radeon_info));
+ return r;
+}
+
+drm_public struct radeon_cs_manager *radeon_cs_manager_gem_ctor(int fd)
+{
+ struct radeon_cs_manager_gem *csm;
+
+ csm = calloc(1, sizeof(struct radeon_cs_manager_gem));
+ if (csm == NULL) {
+ return NULL;
+ }
+ csm->base.funcs = &radeon_cs_gem_funcs;
+ csm->base.fd = fd;
+ radeon_get_device_id(fd, &csm->device_id);
+ return &csm->base;
+}
+
+drm_public void radeon_cs_manager_gem_dtor(struct radeon_cs_manager *csm)
+{
+ free(csm);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-04 09:50:35 +0000