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drm/radeon: refactor vline packet parsing function

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vline packet parsing function for R600 and Evergreen+ are
the same, except that they use different registers. Factor
out the algorithm into a common function that uses register
table passed from ASIC-specific caller.

This reduces ASIC-specific function to (trivial) setup
of register table and call into the common function.

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ilija Hadzic
2013-01-02 18:27:43 -05:00
committed by Alex Deucher
parent 9ffb7a6dca
commit 40592a17b8
4 changed files with 69 additions and 116 deletions
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61
drivers/gpu/drm/radeon/r600_cs.c
View File

@ -877,9 +877,30 @@ static int r600_cs_packet_next_reloc_nomm(struct radeon_cs_parser *p,
}
/**
* r600_cs_packet_next_vline() - parse userspace VLINE packet
* r600_cs_packet_parse_vline() - parse userspace VLINE packet
* @parser: parser structure holding parsing context.
*
* This is an R600-specific function for parsing VLINE packets.
* Real work is done by r600_cs_common_vline_parse function.
* Here we just set up ASIC-specific register table and call
* the common implementation function.
*/
static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
{
static uint32_t vline_start_end[2] = {AVIVO_D1MODE_VLINE_START_END,
AVIVO_D2MODE_VLINE_START_END};
static uint32_t vline_status[2] = {AVIVO_D1MODE_VLINE_STATUS,
AVIVO_D2MODE_VLINE_STATUS};
return r600_cs_common_vline_parse(p, vline_start_end, vline_status);
}
/**
* r600_cs_common_vline_parse() - common vline parser
* @parser: parser structure holding parsing context.
* @vline_start_end: table of vline_start_end registers
* @vline_status: table of vline_status registers
*
* Userspace sends a special sequence for VLINE waits.
* PACKET0 - VLINE_START_END + value
* PACKET3 - WAIT_REG_MEM poll vline status reg
@ -888,9 +909,16 @@ static int r600_cs_packet_next_reloc_nomm(struct radeon_cs_parser *p,
* This function parses this and relocates the VLINE START END
* and WAIT_REG_MEM packets to the correct crtc.
* It also detects a switched off crtc and nulls out the
* wait in that case.
* wait in that case. This function is common for all ASICs that
* are R600 and newer. The parsing algorithm is the same, and only
* differs in which registers are used.
*
* Caller is the ASIC-specific function which passes the parser
* context and ASIC-specific register table
*/
static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
int r600_cs_common_vline_parse(struct radeon_cs_parser *p,
uint32_t *vline_start_end,
uint32_t *vline_status)
{
struct drm_mode_object *obj;
struct drm_crtc *crtc;
@ -918,7 +946,7 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
wait_reg_mem_info = radeon_get_ib_value(p, wait_reg_mem.idx + 1);
/* bit 4 is reg (0) or mem (1) */
if (wait_reg_mem_info & 0x10) {
DRM_ERROR("vline WAIT_REG_MEM waiting on MEM rather than REG\n");
DRM_ERROR("vline WAIT_REG_MEM waiting on MEM instead of REG\n");
return -EINVAL;
}
/* waiting for value to be equal */
@ -926,12 +954,12 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
DRM_ERROR("vline WAIT_REG_MEM function not equal\n");
return -EINVAL;
}
if ((radeon_get_ib_value(p, wait_reg_mem.idx + 2) << 2) != AVIVO_D1MODE_VLINE_STATUS) {
if ((radeon_get_ib_value(p, wait_reg_mem.idx + 2) << 2) != vline_status[0]) {
DRM_ERROR("vline WAIT_REG_MEM bad reg\n");
return -EINVAL;
}
if (radeon_get_ib_value(p, wait_reg_mem.idx + 5) != AVIVO_D1MODE_VLINE_STAT) {
if (radeon_get_ib_value(p, wait_reg_mem.idx + 5) != RADEON_VLINE_STAT) {
DRM_ERROR("vline WAIT_REG_MEM bad bit mask\n");
return -EINVAL;
}
@ -959,7 +987,7 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
crtc_id = radeon_crtc->crtc_id;
if (!crtc->enabled) {
/* if the CRTC isn't enabled - we need to nop out the WAIT_REG_MEM */
/* CRTC isn't enabled - we need to nop out the WAIT_REG_MEM */
ib[h_idx + 2] = PACKET2(0);
ib[h_idx + 3] = PACKET2(0);
ib[h_idx + 4] = PACKET2(0);
@ -967,20 +995,15 @@ static int r600_cs_packet_parse_vline(struct radeon_cs_parser *p)
ib[h_idx + 6] = PACKET2(0);
ib[h_idx + 7] = PACKET2(0);
ib[h_idx + 8] = PACKET2(0);
} else if (crtc_id == 1) {
switch (reg) {
case AVIVO_D1MODE_VLINE_START_END:
header &= ~R600_CP_PACKET0_REG_MASK;
header |= AVIVO_D2MODE_VLINE_START_END >> 2;
break;
default:
DRM_ERROR("unknown crtc reloc\n");
return -EINVAL;
}
} else if (reg == vline_start_end[0]) {
header &= ~R600_CP_PACKET0_REG_MASK;
header |= vline_start_end[crtc_id] >> 2;
ib[h_idx] = header;
ib[h_idx + 4] = AVIVO_D2MODE_VLINE_STATUS >> 2;
ib[h_idx + 4] = vline_status[crtc_id] >> 2;
} else {
DRM_ERROR("unknown crtc reloc\n");
return -EINVAL;
}
return 0;
}