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drm/radeon/kms: don't require up to 64k allocations. (v2)

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This avoids needing to do a kmalloc > PAGE_SIZE for the main
indirect buffer chunk, it adds an accessor for all reads from
the chunk and caches a single page at a time for subsequent
reads.

changes since v1:
Use a two page pool which should be the most common case
a single packet spanning > PAGE_SIZE will be hit, but I'm
having trouble seeing anywhere we currently generate anything like that.
hopefully proper short page copying at end
added parser_error flag to set deep errors instead of having to test
every ib value fetch.
fixed bug in patch that went to list.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-09-23 16:56:27 +10:00
committed by Dave Airlie
parent 35e4b7af21
commit 513bcb4655
7 changed files with 370 additions and 271 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
drivers/gpu/drm/radeon/r100_track.h
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@@ -84,6 +84,8 @@ int r200_packet0_check(struct radeon_cs_parser *p,
struct radeon_cs_packet *pkt,
unsigned idx, unsigned reg);
static inline int r100_reloc_pitch_offset(struct radeon_cs_parser *p,
struct radeon_cs_packet *pkt,
unsigned idx,
@@ -93,9 +95,7 @@ static inline int r100_reloc_pitch_offset(struct radeon_cs_parser *p,
u32 tile_flags = 0;
u32 tmp;
struct radeon_cs_reloc *reloc;
struct radeon_cs_chunk *ib_chunk;
ib_chunk = &p->chunks[p->chunk_ib_idx];
u32 value;
r = r100_cs_packet_next_reloc(p, &reloc);
if (r) {
@@ -104,7 +104,8 @@ static inline int r100_reloc_pitch_offset(struct radeon_cs_parser *p,
r100_cs_dump_packet(p, pkt);
return r;
}
tmp = ib_chunk->kdata[idx] & 0x003fffff;
value = radeon_get_ib_value(p, idx);
tmp = value & 0x003fffff;
tmp += (((u32)reloc->lobj.gpu_offset) >> 10);
if (reloc->lobj.tiling_flags & RADEON_TILING_MACRO)
@@ -119,6 +120,64 @@ static inline int r100_reloc_pitch_offset(struct radeon_cs_parser *p,
}
tmp |= tile_flags;
p->ib->ptr[idx] = (ib_chunk->kdata[idx] & 0x3fc00000) | tmp;
p->ib->ptr[idx] = (value & 0x3fc00000) | tmp;
return 0;
}
static inline int r100_packet3_load_vbpntr(struct radeon_cs_parser *p,
struct radeon_cs_packet *pkt,
int idx)
{
unsigned c, i;
struct radeon_cs_reloc *reloc;
struct r100_cs_track *track;
int r = 0;
volatile uint32_t *ib;
u32 idx_value;
ib = p->ib->ptr;
track = (struct r100_cs_track *)p->track;
c = radeon_get_ib_value(p, idx++) & 0x1F;
track->num_arrays = c;
for (i = 0; i < (c - 1); i+=2, idx+=3) {
r = r100_cs_packet_next_reloc(p, &reloc);
if (r) {
DRM_ERROR("No reloc for packet3 %d\n",
pkt->opcode);
r100_cs_dump_packet(p, pkt);
return r;
}
idx_value = radeon_get_ib_value(p, idx);
ib[idx+1] = radeon_get_ib_value(p, idx + 1) + ((u32)reloc->lobj.gpu_offset);
track->arrays[i + 0].esize = idx_value >> 8;
track->arrays[i + 0].robj = reloc->robj;
track->arrays[i + 0].esize &= 0x7F;
r = r100_cs_packet_next_reloc(p, &reloc);
if (r) {
DRM_ERROR("No reloc for packet3 %d\n",
pkt->opcode);
r100_cs_dump_packet(p, pkt);
return r;
}
ib[idx+2] = radeon_get_ib_value(p, idx + 2) + ((u32)reloc->lobj.gpu_offset);
track->arrays[i + 1].robj = reloc->robj;
track->arrays[i + 1].esize = idx_value >> 24;
track->arrays[i + 1].esize &= 0x7F;
}
if (c & 1) {
r = r100_cs_packet_next_reloc(p, &reloc);
if (r) {
DRM_ERROR("No reloc for packet3 %d\n",
pkt->opcode);
r100_cs_dump_packet(p, pkt);
return r;
}
idx_value = radeon_get_ib_value(p, idx);
ib[idx+1] = radeon_get_ib_value(p, idx + 1) + ((u32)reloc->lobj.gpu_offset);
track->arrays[i + 0].robj = reloc->robj;
track->arrays[i + 0].esize = idx_value >> 8;
track->arrays[i + 0].esize &= 0x7F;
}
return r;
}