[PATCH 07/12] drm/radeon: refactor vline packet parsing function
Ilija Hadzic
ihadzic at research.bell-labs.com
Wed Jan 2 15:27:43 PST 2013
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 at research.bell-labs.com>
---
drivers/gpu/drm/radeon/evergreen_cs.c | 120 +++++++---------------------------
drivers/gpu/drm/radeon/r600_cs.c | 61 +++++++++++------
drivers/gpu/drm/radeon/radeon.h | 4 +-
drivers/gpu/drm/radeon/radeon_reg.h | 2 +
4 files changed, 70 insertions(+), 117 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c
index 883b9f7..2690532 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -1055,109 +1055,35 @@ static int evergreen_cs_packet_next_reloc(struct radeon_cs_parser *p,
}
/**
- * evergreen_cs_packet_next_vline() - parse userspace VLINE packet
+ * evergreen_cs_packet_parse_vline() - parse userspace VLINE packet
* @parser: parser structure holding parsing context.
*
- * Userspace sends a special sequence for VLINE waits.
- * PACKET0 - VLINE_START_END + value
- * PACKET3 - WAIT_REG_MEM poll vline status reg
- * RELOC (P3) - crtc_id in reloc.
- *
- * 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.
+ * This is an Evergreen(+)-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 evergreen_cs_packet_parse_vline(struct radeon_cs_parser *p)
{
- struct drm_mode_object *obj;
- struct drm_crtc *crtc;
- struct radeon_crtc *radeon_crtc;
- struct radeon_cs_packet p3reloc, wait_reg_mem;
- int crtc_id;
- int r;
- uint32_t header, h_idx, reg, wait_reg_mem_info;
- volatile uint32_t *ib;
-
- ib = p->ib.ptr;
-
- /* parse the WAIT_REG_MEM */
- r = radeon_cs_packet_parse(p, &wait_reg_mem, p->idx);
- if (r)
- return r;
-
- /* check its a WAIT_REG_MEM */
- if (wait_reg_mem.type != PACKET_TYPE3 ||
- wait_reg_mem.opcode != PACKET3_WAIT_REG_MEM) {
- DRM_ERROR("vline wait missing WAIT_REG_MEM segment\n");
- return -EINVAL;
- }
-
- 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");
- return -EINVAL;
- }
- /* waiting for value to be equal */
- if ((wait_reg_mem_info & 0x7) != 0x3) {
- DRM_ERROR("vline WAIT_REG_MEM function not equal\n");
- return -EINVAL;
- }
- if ((radeon_get_ib_value(p, wait_reg_mem.idx + 2) << 2) != EVERGREEN_VLINE_STATUS) {
- DRM_ERROR("vline WAIT_REG_MEM bad reg\n");
- return -EINVAL;
- }
- if (radeon_get_ib_value(p, wait_reg_mem.idx + 5) != EVERGREEN_VLINE_STAT) {
- DRM_ERROR("vline WAIT_REG_MEM bad bit mask\n");
- return -EINVAL;
- }
-
- /* jump over the NOP */
- r = radeon_cs_packet_parse(p, &p3reloc, p->idx + wait_reg_mem.count + 2);
- if (r)
- return r;
-
- h_idx = p->idx - 2;
- p->idx += wait_reg_mem.count + 2;
- p->idx += p3reloc.count + 2;
-
- header = radeon_get_ib_value(p, h_idx);
- crtc_id = radeon_get_ib_value(p, h_idx + 2 + 7 + 1);
- reg = CP_PACKET0_GET_REG(header);
- obj = drm_mode_object_find(p->rdev->ddev, crtc_id, DRM_MODE_OBJECT_CRTC);
- if (!obj) {
- DRM_ERROR("cannot find crtc %d\n", crtc_id);
- return -EINVAL;
- }
- crtc = obj_to_crtc(obj);
- radeon_crtc = to_radeon_crtc(crtc);
- crtc_id = radeon_crtc->crtc_id;
-
- if (!crtc->enabled) {
- /* if the 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);
- ib[h_idx + 5] = PACKET2(0);
- ib[h_idx + 6] = PACKET2(0);
- ib[h_idx + 7] = PACKET2(0);
- ib[h_idx + 8] = PACKET2(0);
- } else {
- switch (reg) {
- case EVERGREEN_VLINE_START_END:
- header &= ~R600_CP_PACKET0_REG_MASK;
- header |= (EVERGREEN_VLINE_START_END + radeon_crtc->crtc_offset) >> 2;
- ib[h_idx] = header;
- ib[h_idx + 4] = (EVERGREEN_VLINE_STATUS + radeon_crtc->crtc_offset) >> 2;
- break;
- default:
- DRM_ERROR("unknown crtc reloc\n");
- return -EINVAL;
- }
- }
- return 0;
+ static uint32_t vline_start_end[6] = {
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC0_REGISTER_OFFSET,
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC1_REGISTER_OFFSET,
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC2_REGISTER_OFFSET,
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC3_REGISTER_OFFSET,
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC4_REGISTER_OFFSET,
+ EVERGREEN_VLINE_START_END + EVERGREEN_CRTC5_REGISTER_OFFSET
+ };
+ static uint32_t vline_status[6] = {
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET,
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC1_REGISTER_OFFSET,
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC2_REGISTER_OFFSET,
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC3_REGISTER_OFFSET,
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC4_REGISTER_OFFSET,
+ EVERGREEN_VLINE_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET
+ };
+
+ return r600_cs_common_vline_parse(p, vline_start_end, vline_status);
}
static int evergreen_packet0_check(struct radeon_cs_parser *p,
diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index e2fb76a..5d59275 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -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;
}
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index a5066ab..669c723 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1970,7 +1970,9 @@ int radeon_cs_packet_parse(struct radeon_cs_parser *p,
struct radeon_cs_packet *pkt,
unsigned idx);
bool radeon_cs_packet_next_is_pkt3_nop(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);
#include "radeon_object.h"
diff --git a/drivers/gpu/drm/radeon/radeon_reg.h b/drivers/gpu/drm/radeon/radeon_reg.h
index ce7e9f2..7e2c2b7 100644
--- a/drivers/gpu/drm/radeon/radeon_reg.h
+++ b/drivers/gpu/drm/radeon/radeon_reg.h
@@ -3719,4 +3719,6 @@
#define RADEON_PACKET3_NOP 0x10
+#define RADEON_VLINE_STAT (1 << 12)
+
#endif
--
1.7.12
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