struct list_head hw_submitted;
struct list_head preempted;
unsigned num_hw_submitted;
+ bool block_submission;
};
/**
* kernel command submissions, @cur.
* @space_mutex: Mutex to protect against starvation when we allocate
* main pool buffer space.
+ * @error_mutex: Mutex to serialize the work queue error handling.
+ * Note this is not needed if the same workqueue handler
+ * can't race with itself...
* @work: A struct work_struct implementeing command buffer error handling.
* Immutable.
* @dev_priv: Pointer to the device private struct. Immutable.
struct vmw_cmdbuf_man {
struct mutex cur_mutex;
struct mutex space_mutex;
+ struct mutex error_mutex;
struct work_struct work;
struct vmw_private *dev_priv;
struct vmw_cmdbuf_context ctx[SVGA_CB_CONTEXT_MAX];
};
/* Loop over each context in the command buffer manager. */
-#define for_each_cmdbuf_ctx(_man, _i, _ctx) \
+#define for_each_cmdbuf_ctx(_man, _i, _ctx) \
for (_i = 0, _ctx = &(_man)->ctx[0]; (_i) < SVGA_CB_CONTEXT_MAX; \
++(_i), ++(_ctx))
-static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, bool enable);
-
+static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, u32 context,
+ bool enable);
+static int vmw_cmdbuf_preempt(struct vmw_cmdbuf_man *man, u32 context);
/**
* vmw_cmdbuf_cur_lock - Helper to lock the cur_mutex.
struct vmw_cmdbuf_context *ctx)
{
while (ctx->num_hw_submitted < man->max_hw_submitted &&
- !list_empty(&ctx->submitted)) {
+ !list_empty(&ctx->submitted) &&
+ !ctx->block_submission) {
struct vmw_cmdbuf_header *entry;
SVGACBStatus status;
__vmw_cmdbuf_header_free(entry);
break;
case SVGA_CB_STATUS_COMMAND_ERROR:
- case SVGA_CB_STATUS_CB_HEADER_ERROR:
+ entry->cb_header->status = SVGA_CB_STATUS_NONE;
list_add_tail(&entry->list, &man->error);
schedule_work(&man->work);
break;
case SVGA_CB_STATUS_PREEMPTED:
- list_add(&entry->list, &ctx->preempted);
+ entry->cb_header->status = SVGA_CB_STATUS_NONE;
+ list_add_tail(&entry->list, &ctx->preempted);
+ break;
+ case SVGA_CB_STATUS_CB_HEADER_ERROR:
+ WARN_ONCE(true, "Command buffer header error.\n");
+ __vmw_cmdbuf_header_free(entry);
break;
default:
WARN_ONCE(true, "Undefined command buffer status.\n");
container_of(work, struct vmw_cmdbuf_man, work);
struct vmw_cmdbuf_header *entry, *next;
uint32_t dummy;
- bool restart = false;
+ bool restart[SVGA_CB_CONTEXT_MAX];
+ bool send_fence = false;
+ struct list_head restart_head[SVGA_CB_CONTEXT_MAX];
+ int i;
+ struct vmw_cmdbuf_context *ctx;
+ for_each_cmdbuf_ctx(man, i, ctx) {
+ INIT_LIST_HEAD(&restart_head[i]);
+ restart[i] = false;
+ }
+
+ mutex_lock(&man->error_mutex);
spin_lock(&man->lock);
list_for_each_entry_safe(entry, next, &man->error, list) {
- restart = true;
- DRM_ERROR("Command buffer error.\n");
+ SVGACBHeader *cb_hdr = entry->cb_header;
+ SVGA3dCmdHeader *header = (SVGA3dCmdHeader *)
+ (entry->cmd + cb_hdr->errorOffset);
+ u32 error_cmd_size, new_start_offset;
+ const char *cmd_name;
+
+ list_del_init(&entry->list);
+ restart[entry->cb_context] = true;
+
+ if (!vmw_cmd_describe(header, &error_cmd_size, &cmd_name)) {
+ DRM_ERROR("Unknown command causing device error.\n");
+ DRM_ERROR("Command buffer offset is %lu\n",
+ (unsigned long) cb_hdr->errorOffset);
+ __vmw_cmdbuf_header_free(entry);
+ send_fence = true;
+ continue;
+ }
- list_del(&entry->list);
- __vmw_cmdbuf_header_free(entry);
- wake_up_all(&man->idle_queue);
+ DRM_ERROR("Command \"%s\" causing device error.\n", cmd_name);
+ DRM_ERROR("Command buffer offset is %lu\n",
+ (unsigned long) cb_hdr->errorOffset);
+ DRM_ERROR("Command size is %lu\n",
+ (unsigned long) error_cmd_size);
+
+ new_start_offset = cb_hdr->errorOffset + error_cmd_size;
+
+ if (new_start_offset >= cb_hdr->length) {
+ __vmw_cmdbuf_header_free(entry);
+ send_fence = true;
+ continue;
+ }
+
+ if (man->using_mob)
+ cb_hdr->ptr.mob.mobOffset += new_start_offset;
+ else
+ cb_hdr->ptr.pa += (u64) new_start_offset;
+
+ entry->cmd += new_start_offset;
+ cb_hdr->length -= new_start_offset;
+ cb_hdr->errorOffset = 0;
+ list_add_tail(&entry->list, &restart_head[entry->cb_context]);
+ man->ctx[entry->cb_context].block_submission = true;
+ }
+ spin_unlock(&man->lock);
+
+ /* Preempt all contexts with errors */
+ for_each_cmdbuf_ctx(man, i, ctx) {
+ if (ctx->block_submission && vmw_cmdbuf_preempt(man, i))
+ DRM_ERROR("Failed preempting command buffer "
+ "context %u.\n", i);
+ }
+
+ spin_lock(&man->lock);
+ for_each_cmdbuf_ctx(man, i, ctx) {
+ if (!ctx->block_submission)
+ continue;
+
+ /* Move preempted command buffers to the preempted queue. */
+ vmw_cmdbuf_ctx_process(man, ctx, &dummy);
+
+ /*
+ * Add the preempted queue after the command buffer
+ * that caused an error.
+ */
+ list_splice_init(&ctx->preempted, restart_head[i].prev);
+
+ /*
+ * Finally add all command buffers first in the submitted
+ * queue, to rerun them.
+ */
+ list_splice_init(&restart_head[i], &ctx->submitted);
+
+ ctx->block_submission = false;
}
+
+ vmw_cmdbuf_man_process(man);
spin_unlock(&man->lock);
- if (restart && vmw_cmdbuf_startstop(man, true))
- DRM_ERROR("Failed restarting command buffer context 0.\n");
+ for_each_cmdbuf_ctx(man, i, ctx) {
+ if (restart[i] && vmw_cmdbuf_startstop(man, i, true))
+ DRM_ERROR("Failed restarting command buffer "
+ "context %u.\n", i);
+ }
/* Send a new fence in case one was removed */
- vmw_fifo_send_fence(man->dev_priv, &dummy);
+ if (send_fence) {
+ vmw_fifo_send_fence(man->dev_priv, &dummy);
+ wake_up_all(&man->idle_queue);
+ }
+
+ mutex_unlock(&man->error_mutex);
}
/**
return 0;
}
+/**
+ * vmw_cmdbuf_preempt - Send a preempt command through the device
+ * context.
+ *
+ * @man: The command buffer manager.
+ *
+ * Synchronously sends a preempt command.
+ */
+static int vmw_cmdbuf_preempt(struct vmw_cmdbuf_man *man, u32 context)
+{
+ struct {
+ uint32 id;
+ SVGADCCmdPreempt body;
+ } __packed cmd;
+
+ cmd.id = SVGA_DC_CMD_PREEMPT;
+ cmd.body.context = SVGA_CB_CONTEXT_0 + context;
+ cmd.body.ignoreIDZero = 0;
+
+ return vmw_cmdbuf_send_device_command(man, &cmd, sizeof(cmd));
+}
+
+
/**
* vmw_cmdbuf_startstop - Send a start / stop command through the device
* context.
*
* Synchronously sends a device start / stop context command.
*/
-static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man,
+static int vmw_cmdbuf_startstop(struct vmw_cmdbuf_man *man, u32 context,
bool enable)
{
struct {
cmd.id = SVGA_DC_CMD_START_STOP_CONTEXT;
cmd.body.enable = (enable) ? 1 : 0;
- cmd.body.context = SVGA_CB_CONTEXT_0;
+ cmd.body.context = SVGA_CB_CONTEXT_0 + context;
return vmw_cmdbuf_send_device_command(man, &cmd, sizeof(cmd));
}
{
struct vmw_cmdbuf_man *man;
struct vmw_cmdbuf_context *ctx;
- int i;
+ unsigned int i;
int ret;
if (!(dev_priv->capabilities & SVGA_CAP_COMMAND_BUFFERS))
spin_lock_init(&man->lock);
mutex_init(&man->cur_mutex);
mutex_init(&man->space_mutex);
+ mutex_init(&man->error_mutex);
man->default_size = VMW_CMDBUF_INLINE_SIZE;
init_waitqueue_head(&man->alloc_queue);
init_waitqueue_head(&man->idle_queue);
INIT_WORK(&man->work, &vmw_cmdbuf_work_func);
vmw_generic_waiter_add(dev_priv, SVGA_IRQFLAG_ERROR,
&dev_priv->error_waiters);
- ret = vmw_cmdbuf_startstop(man, true);
- if (ret) {
- DRM_ERROR("Failed starting command buffer context 0.\n");
- vmw_cmdbuf_man_destroy(man);
- return ERR_PTR(ret);
+ for_each_cmdbuf_ctx(man, i, ctx) {
+ ret = vmw_cmdbuf_startstop(man, i, true);
+ if (ret) {
+ DRM_ERROR("Failed starting command buffer "
+ "context %u.\n", i);
+ vmw_cmdbuf_man_destroy(man);
+ return ERR_PTR(ret);
+ }
}
return man;
*/
void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man)
{
+ struct vmw_cmdbuf_context *ctx;
+ unsigned int i;
+
WARN_ON_ONCE(man->has_pool);
(void) vmw_cmdbuf_idle(man, false, 10*HZ);
- if (vmw_cmdbuf_startstop(man, false))
- DRM_ERROR("Failed stopping command buffer context 0.\n");
+
+ for_each_cmdbuf_ctx(man, i, ctx)
+ if (vmw_cmdbuf_startstop(man, i, false))
+ DRM_ERROR("Failed stopping command buffer "
+ "context %u.\n", i);
vmw_generic_waiter_remove(man->dev_priv, SVGA_IRQFLAG_ERROR,
&man->dev_priv->error_waiters);
dma_pool_destroy(man->headers);
mutex_destroy(&man->cur_mutex);
mutex_destroy(&man->space_mutex);
+ mutex_destroy(&man->error_mutex);
kfree(man);
}
projects / openwrt / staging / blogic.git / commitdiff