#include <linux/debugfs.h>
#include <linux/slab.h>
#include <linux/export.h>
-#include <generated/utsrelease.h>
#include <drm/drmP.h>
#include "intel_drv.h"
#include "intel_ringbuffer.h"
}
}
-static const char *cache_level_str(int type)
-{
- switch (type) {
- case I915_CACHE_NONE: return " uncached";
- case I915_CACHE_LLC: return " snooped (LLC)";
- case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
- default: return "";
- }
-}
-
static void
describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
{
obj->last_read_seqno,
obj->last_write_seqno,
obj->last_fenced_seqno,
- cache_level_str(obj->cache_level),
+ i915_cache_level_str(obj->cache_level),
obj->dirty ? " dirty" : "",
obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
if (obj->base.name)
return 0;
}
-static const char *ring_str(int ring)
-{
- switch (ring) {
- case RCS: return "render";
- case VCS: return "bsd";
- case BCS: return "blt";
- case VECS: return "vebox";
- default: return "";
- }
-}
-
-static const char *pin_flag(int pinned)
-{
- if (pinned > 0)
- return " P";
- else if (pinned < 0)
- return " p";
- else
- return "";
-}
-
-static const char *tiling_flag(int tiling)
-{
- switch (tiling) {
- default:
- case I915_TILING_NONE: return "";
- case I915_TILING_X: return " X";
- case I915_TILING_Y: return " Y";
- }
-}
-
-static const char *dirty_flag(int dirty)
-{
- return dirty ? " dirty" : "";
-}
-
-static const char *purgeable_flag(int purgeable)
-{
- return purgeable ? " purgeable" : "";
-}
-
-static bool __i915_error_ok(struct drm_i915_error_state_buf *e)
-{
-
- if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {
- e->err = -ENOSPC;
- return false;
- }
-
- if (e->bytes == e->size - 1 || e->err)
- return false;
-
- return true;
-}
-
-static bool __i915_error_seek(struct drm_i915_error_state_buf *e,
- unsigned len)
-{
- if (e->pos + len <= e->start) {
- e->pos += len;
- return false;
- }
-
- /* First vsnprintf needs to fit in its entirety for memmove */
- if (len >= e->size) {
- e->err = -EIO;
- return false;
- }
-
- return true;
-}
-
-static void __i915_error_advance(struct drm_i915_error_state_buf *e,
- unsigned len)
-{
- /* If this is first printf in this window, adjust it so that
- * start position matches start of the buffer
- */
-
- if (e->pos < e->start) {
- const size_t off = e->start - e->pos;
-
- /* Should not happen but be paranoid */
- if (off > len || e->bytes) {
- e->err = -EIO;
- return;
- }
-
- memmove(e->buf, e->buf + off, len - off);
- e->bytes = len - off;
- e->pos = e->start;
- return;
- }
-
- e->bytes += len;
- e->pos += len;
-}
-
-static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
- const char *f, va_list args)
-{
- unsigned len;
-
- if (!__i915_error_ok(e))
- return;
-
- /* Seek the first printf which is hits start position */
- if (e->pos < e->start) {
- len = vsnprintf(NULL, 0, f, args);
- if (!__i915_error_seek(e, len))
- return;
- }
-
- len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
- if (len >= e->size - e->bytes)
- len = e->size - e->bytes - 1;
-
- __i915_error_advance(e, len);
-}
-
-static void i915_error_puts(struct drm_i915_error_state_buf *e,
- const char *str)
-{
- unsigned len;
-
- if (!__i915_error_ok(e))
- return;
-
- len = strlen(str);
-
- /* Seek the first printf which is hits start position */
- if (e->pos < e->start) {
- if (!__i915_error_seek(e, len))
- return;
- }
-
- if (len >= e->size - e->bytes)
- len = e->size - e->bytes - 1;
- memcpy(e->buf + e->bytes, str, len);
-
- __i915_error_advance(e, len);
-}
-
-void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
-{
- va_list args;
-
- va_start(args, f);
- i915_error_vprintf(e, f, args);
- va_end(args);
-}
-
-#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
-#define err_puts(e, s) i915_error_puts(e, s)
-
-static void print_error_buffers(struct drm_i915_error_state_buf *m,
- const char *name,
- struct drm_i915_error_buffer *err,
- int count)
-{
- err_printf(m, "%s [%d]:\n", name, count);
-
- while (count--) {
- err_printf(m, " %08x %8u %02x %02x %x %x",
- err->gtt_offset,
- err->size,
- err->read_domains,
- err->write_domain,
- err->rseqno, err->wseqno);
- err_puts(m, pin_flag(err->pinned));
- err_puts(m, tiling_flag(err->tiling));
- err_puts(m, dirty_flag(err->dirty));
- err_puts(m, purgeable_flag(err->purgeable));
- err_puts(m, err->ring != -1 ? " " : "");
- err_puts(m, ring_str(err->ring));
- err_puts(m, cache_level_str(err->cache_level));
-
- if (err->name)
- err_printf(m, " (name: %d)", err->name);
- if (err->fence_reg != I915_FENCE_REG_NONE)
- err_printf(m, " (fence: %d)", err->fence_reg);
-
- err_puts(m, "\n");
- err++;
- }
-}
-
-static void i915_ring_error_state(struct drm_i915_error_state_buf *m,
- struct drm_device *dev,
- struct drm_i915_error_state *error,
- unsigned ring)
-{
- BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
- err_printf(m, "%s command stream:\n", ring_str(ring));
- err_printf(m, " HEAD: 0x%08x\n", error->head[ring]);
- err_printf(m, " TAIL: 0x%08x\n", error->tail[ring]);
- err_printf(m, " CTL: 0x%08x\n", error->ctl[ring]);
- err_printf(m, " ACTHD: 0x%08x\n", error->acthd[ring]);
- err_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);
- err_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);
- err_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);
- if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
- err_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr);
-
- if (INTEL_INFO(dev)->gen >= 4)
- err_printf(m, " INSTPS: 0x%08x\n", error->instps[ring]);
- err_printf(m, " INSTPM: 0x%08x\n", error->instpm[ring]);
- err_printf(m, " FADDR: 0x%08x\n", error->faddr[ring]);
- if (INTEL_INFO(dev)->gen >= 6) {
- err_printf(m, " RC PSMI: 0x%08x\n", error->rc_psmi[ring]);
- err_printf(m, " FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
- err_printf(m, " SYNC_0: 0x%08x [last synced 0x%08x]\n",
- error->semaphore_mboxes[ring][0],
- error->semaphore_seqno[ring][0]);
- err_printf(m, " SYNC_1: 0x%08x [last synced 0x%08x]\n",
- error->semaphore_mboxes[ring][1],
- error->semaphore_seqno[ring][1]);
- }
- err_printf(m, " seqno: 0x%08x\n", error->seqno[ring]);
- err_printf(m, " waiting: %s\n", yesno(error->waiting[ring]));
- err_printf(m, " ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
- err_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
-}
-
-int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
- const struct i915_error_state_file_priv *error_priv)
-{
- struct drm_device *dev = error_priv->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_error_state *error = error_priv->error;
- struct intel_ring_buffer *ring;
- int i, j, page, offset, elt;
-
- if (!error) {
- err_printf(m, "no error state collected\n");
- goto out;
- }
-
- err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
- error->time.tv_usec);
- err_printf(m, "Kernel: " UTS_RELEASE "\n");
- err_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
- err_printf(m, "EIR: 0x%08x\n", error->eir);
- err_printf(m, "IER: 0x%08x\n", error->ier);
- err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
- err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
- err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
- err_printf(m, "CCID: 0x%08x\n", error->ccid);
-
- for (i = 0; i < dev_priv->num_fence_regs; i++)
- err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]);
-
- for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
- err_printf(m, " INSTDONE_%d: 0x%08x\n", i,
- error->extra_instdone[i]);
-
- if (INTEL_INFO(dev)->gen >= 6) {
- err_printf(m, "ERROR: 0x%08x\n", error->error);
- err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
- }
-
- if (INTEL_INFO(dev)->gen == 7)
- err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
-
- for_each_ring(ring, dev_priv, i)
- i915_ring_error_state(m, dev, error, i);
-
- if (error->active_bo)
- print_error_buffers(m, "Active",
- error->active_bo,
- error->active_bo_count);
-
- if (error->pinned_bo)
- print_error_buffers(m, "Pinned",
- error->pinned_bo,
- error->pinned_bo_count);
-
- for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
- struct drm_i915_error_object *obj;
-
- if ((obj = error->ring[i].batchbuffer)) {
- err_printf(m, "%s --- gtt_offset = 0x%08x\n",
- dev_priv->ring[i].name,
- obj->gtt_offset);
- offset = 0;
- for (page = 0; page < obj->page_count; page++) {
- for (elt = 0; elt < PAGE_SIZE/4; elt++) {
- err_printf(m, "%08x : %08x\n", offset,
- obj->pages[page][elt]);
- offset += 4;
- }
- }
- }
-
- if (error->ring[i].num_requests) {
- err_printf(m, "%s --- %d requests\n",
- dev_priv->ring[i].name,
- error->ring[i].num_requests);
- for (j = 0; j < error->ring[i].num_requests; j++) {
- err_printf(m, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",
- error->ring[i].requests[j].seqno,
- error->ring[i].requests[j].jiffies,
- error->ring[i].requests[j].tail);
- }
- }
-
- if ((obj = error->ring[i].ringbuffer)) {
- err_printf(m, "%s --- ringbuffer = 0x%08x\n",
- dev_priv->ring[i].name,
- obj->gtt_offset);
- offset = 0;
- for (page = 0; page < obj->page_count; page++) {
- for (elt = 0; elt < PAGE_SIZE/4; elt++) {
- err_printf(m, "%08x : %08x\n",
- offset,
- obj->pages[page][elt]);
- offset += 4;
- }
- }
- }
-
- obj = error->ring[i].ctx;
- if (obj) {
- err_printf(m, "%s --- HW Context = 0x%08x\n",
- dev_priv->ring[i].name,
- obj->gtt_offset);
- offset = 0;
- for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
- err_printf(m, "[%04x] %08x %08x %08x %08x\n",
- offset,
- obj->pages[0][elt],
- obj->pages[0][elt+1],
- obj->pages[0][elt+2],
- obj->pages[0][elt+3]);
- offset += 16;
- }
- }
- }
-
- if (error->overlay)
- intel_overlay_print_error_state(m, error->overlay);
-
- if (error->display)
- intel_display_print_error_state(m, dev, error->display);
-
-out:
- if (m->bytes == 0 && m->err)
- return m->err;
-
- return 0;
-}
-
static ssize_t
i915_error_state_write(struct file *filp,
const char __user *ubuf,
return cnt;
}
-void i915_error_state_get(struct drm_device *dev,
- struct i915_error_state_file_priv *error_priv)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- unsigned long flags;
-
- spin_lock_irqsave(&dev_priv->gpu_error.lock, flags);
- error_priv->error = dev_priv->gpu_error.first_error;
- if (error_priv->error)
- kref_get(&error_priv->error->ref);
- spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags);
-
-}
-
-void i915_error_state_put(struct i915_error_state_file_priv *error_priv)
-{
- if (error_priv->error)
- kref_put(&error_priv->error->ref, i915_error_state_free);
-}
-
static int i915_error_state_open(struct inode *inode, struct file *file)
{
struct drm_device *dev = inode->i_private;
return 0;
}
-int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf,
- size_t count, loff_t pos)
-{
- memset(ebuf, 0, sizeof(*ebuf));
-
- /* We need to have enough room to store any i915_error_state printf
- * so that we can move it to start position.
- */
- ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE;
- ebuf->buf = kmalloc(ebuf->size,
- GFP_TEMPORARY | __GFP_NORETRY | __GFP_NOWARN);
-
- if (ebuf->buf == NULL) {
- ebuf->size = PAGE_SIZE;
- ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
- }
-
- if (ebuf->buf == NULL) {
- ebuf->size = 128;
- ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY);
- }
-
- if (ebuf->buf == NULL)
- return -ENOMEM;
-
- ebuf->start = pos;
-
- return 0;
-}
-
static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
size_t count, loff_t *pos)
{
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