drm/radeon/si: properly set up the clearstate buffer for pg (v2)
The format of the clearstate buffer used for pg (powergating)
changed between NI and SI. This formats it properly for what
the hardware expects on SI.
v2: fix addresses
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index ff48c88..ebe04e4 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -5286,6 +5286,97 @@
si_enable_gfx_cgpg(rdev, enable);
}
+u32 si_get_csb_size(struct radeon_device *rdev)
+{
+ u32 count = 0;
+ const struct cs_section_def *sect = NULL;
+ const struct cs_extent_def *ext = NULL;
+
+ if (rdev->rlc.cs_data == NULL)
+ return 0;
+
+ /* begin clear state */
+ count += 2;
+ /* context control state */
+ count += 3;
+
+ for (sect = rdev->rlc.cs_data; sect->section != NULL; ++sect) {
+ for (ext = sect->section; ext->extent != NULL; ++ext) {
+ if (sect->id == SECT_CONTEXT)
+ count += 2 + ext->reg_count;
+ else
+ return 0;
+ }
+ }
+ /* pa_sc_raster_config */
+ count += 3;
+ /* end clear state */
+ count += 2;
+ /* clear state */
+ count += 2;
+
+ return count;
+}
+
+void si_get_csb_buffer(struct radeon_device *rdev, volatile u32 *buffer)
+{
+ u32 count = 0, i;
+ const struct cs_section_def *sect = NULL;
+ const struct cs_extent_def *ext = NULL;
+
+ if (rdev->rlc.cs_data == NULL)
+ return;
+ if (buffer == NULL)
+ return;
+
+ buffer[count++] = PACKET3(PACKET3_PREAMBLE_CNTL, 0);
+ buffer[count++] = PACKET3_PREAMBLE_BEGIN_CLEAR_STATE;
+
+ buffer[count++] = PACKET3(PACKET3_CONTEXT_CONTROL, 1);
+ buffer[count++] = 0x80000000;
+ buffer[count++] = 0x80000000;
+
+ for (sect = rdev->rlc.cs_data; sect->section != NULL; ++sect) {
+ for (ext = sect->section; ext->extent != NULL; ++ext) {
+ if (sect->id == SECT_CONTEXT) {
+ buffer[count++] = PACKET3(PACKET3_SET_CONTEXT_REG, ext->reg_count);
+ buffer[count++] = ext->reg_index - 0xa000;
+ for (i = 0; i < ext->reg_count; i++)
+ buffer[count++] = ext->extent[i];
+ } else {
+ return;
+ }
+ }
+ }
+
+ buffer[count++] = PACKET3(PACKET3_SET_CONTEXT_REG, 1);
+ buffer[count++] = PA_SC_RASTER_CONFIG - PACKET3_SET_CONTEXT_REG_START;
+ switch (rdev->family) {
+ case CHIP_TAHITI:
+ case CHIP_PITCAIRN:
+ buffer[count++] = 0x2a00126a;
+ break;
+ case CHIP_VERDE:
+ buffer[count++] = 0x0000124a;
+ break;
+ case CHIP_OLAND:
+ buffer[count++] = 0x00000082;
+ break;
+ case CHIP_HAINAN:
+ buffer[count++] = 0x00000000;
+ break;
+ default:
+ buffer[count++] = 0x00000000;
+ break;
+ }
+
+ buffer[count++] = PACKET3(PACKET3_PREAMBLE_CNTL, 0);
+ buffer[count++] = PACKET3_PREAMBLE_END_CLEAR_STATE;
+
+ buffer[count++] = PACKET3(PACKET3_CLEAR_STATE, 0);
+ buffer[count++] = 0;
+}
+
static void si_init_pg(struct radeon_device *rdev)
{
if (rdev->pg_flags) {