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drm/radeon: improve ring debugfs printing 

Print 32dword before last know rptr as problem most likely comes
from previous command. Also small cosmetic change to the printing.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Jerome Glisse 2013-01-02 17:30:34 -05:00 committed by Alex Deucher
parent 74795486b2
commit 4d0091904c
1 changed files with 13 additions and 7 deletions
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20
drivers/gpu/drm/radeon/radeon_ring.c
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@ -770,22 +770,28 @@ static int radeon_debugfs_ring_info(struct seq_file *m, void *data)
int ridx = *(int*)node->info_ent->data;
struct radeon_ring *ring = &rdev->ring[ridx];
unsigned count, i, j;
u32 tmp;
radeon_ring_free_size(rdev, ring);
count = (ring->ring_size / 4) - ring->ring_free_dw;
seq_printf(m, "wptr(0x%04x): 0x%08x\n", ring->wptr_reg, RREG32(ring->wptr_reg));
seq_printf(m, "rptr(0x%04x): 0x%08x\n", ring->rptr_reg, RREG32(ring->rptr_reg));
tmp = RREG32(ring->wptr_reg) >> ring->ptr_reg_shift;
seq_printf(m, "wptr(0x%04x): 0x%08x [%5d]\n", ring->wptr_reg, tmp, tmp);
tmp = RREG32(ring->rptr_reg) >> ring->ptr_reg_shift;
seq_printf(m, "rptr(0x%04x): 0x%08x [%5d]\n", ring->rptr_reg, tmp, tmp);
if (ring->rptr_save_reg) {
seq_printf(m, "rptr next(0x%04x): 0x%08x\n", ring->rptr_save_reg,
RREG32(ring->rptr_save_reg));
}
seq_printf(m, "driver's copy of the wptr: 0x%08x\n", ring->wptr);
seq_printf(m, "driver's copy of the rptr: 0x%08x\n", ring->rptr);
seq_printf(m, "driver's copy of the wptr: 0x%08x [%5d]\n", ring->wptr, ring->wptr);
seq_printf(m, "driver's copy of the rptr: 0x%08x [%5d]\n", ring->rptr, ring->rptr);
seq_printf(m, "%u free dwords in ring\n", ring->ring_free_dw);
seq_printf(m, "%u dwords in ring\n", count);
i = ring->rptr;
for (j = 0; j <= count; j++) {
seq_printf(m, "r[%04d]=0x%08x\n", i, ring->ring[i]);
/* print 8 dw before current rptr as often it's the last executed
* packet that is the root issue
*/
i = (ring->rptr + ring->ptr_mask + 1 - 32) & ring->ptr_mask;
for (j = 0; j <= (count + 32); j++) {
seq_printf(m, "r[%5d]=0x%08x\n", i, ring->ring[i]);
i = (i + 1) & ring->ptr_mask;
}
return 0;