drm/radeon/kms: add support for CP setup on cayman asics
Cayman asics have 3 ring buffers:
ring 0 supports both gfx and compute
rings 1 and 2 are compute only
At the moment we only support ring 0.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 417d9c2..0fecad2 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -31,6 +31,7 @@
#include "nid.h"
#include "atom.h"
#include "ni_reg.h"
+#include "cayman_blit_shaders.h"
#define EVERGREEN_PFP_UCODE_SIZE 1120
#define EVERGREEN_PM4_UCODE_SIZE 1376
@@ -1023,3 +1024,228 @@
radeon_gart_fini(rdev);
}
+/*
+ * CP.
+ */
+static void cayman_cp_enable(struct radeon_device *rdev, bool enable)
+{
+ if (enable)
+ WREG32(CP_ME_CNTL, 0);
+ else {
+ rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+ WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT));
+ WREG32(SCRATCH_UMSK, 0);
+ }
+}
+
+static int cayman_cp_load_microcode(struct radeon_device *rdev)
+{
+ const __be32 *fw_data;
+ int i;
+
+ if (!rdev->me_fw || !rdev->pfp_fw)
+ return -EINVAL;
+
+ cayman_cp_enable(rdev, false);
+
+ fw_data = (const __be32 *)rdev->pfp_fw->data;
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+ for (i = 0; i < CAYMAN_PFP_UCODE_SIZE; i++)
+ WREG32(CP_PFP_UCODE_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+
+ fw_data = (const __be32 *)rdev->me_fw->data;
+ WREG32(CP_ME_RAM_WADDR, 0);
+ for (i = 0; i < CAYMAN_PM4_UCODE_SIZE; i++)
+ WREG32(CP_ME_RAM_DATA, be32_to_cpup(fw_data++));
+
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+ WREG32(CP_ME_RAM_WADDR, 0);
+ WREG32(CP_ME_RAM_RADDR, 0);
+ return 0;
+}
+
+static int cayman_cp_start(struct radeon_device *rdev)
+{
+ int r, i;
+
+ r = radeon_ring_lock(rdev, 7);
+ if (r) {
+ DRM_ERROR("radeon: cp failed to lock ring (%d).\n", r);
+ return r;
+ }
+ radeon_ring_write(rdev, PACKET3(PACKET3_ME_INITIALIZE, 5));
+ radeon_ring_write(rdev, 0x1);
+ radeon_ring_write(rdev, 0x0);
+ radeon_ring_write(rdev, rdev->config.cayman.max_hw_contexts - 1);
+ radeon_ring_write(rdev, PACKET3_ME_INITIALIZE_DEVICE_ID(1));
+ radeon_ring_write(rdev, 0);
+ radeon_ring_write(rdev, 0);
+ radeon_ring_unlock_commit(rdev);
+
+ cayman_cp_enable(rdev, true);
+
+ r = radeon_ring_lock(rdev, cayman_default_size + 15);
+ if (r) {
+ DRM_ERROR("radeon: cp failed to lock ring (%d).\n", r);
+ return r;
+ }
+
+ /* setup clear context state */
+ radeon_ring_write(rdev, PACKET3(PACKET3_PREAMBLE_CNTL, 0));
+ radeon_ring_write(rdev, PACKET3_PREAMBLE_BEGIN_CLEAR_STATE);
+
+ for (i = 0; i < cayman_default_size; i++)
+ radeon_ring_write(rdev, cayman_default_state[i]);
+
+ radeon_ring_write(rdev, PACKET3(PACKET3_PREAMBLE_CNTL, 0));
+ radeon_ring_write(rdev, PACKET3_PREAMBLE_END_CLEAR_STATE);
+
+ /* set clear context state */
+ radeon_ring_write(rdev, PACKET3(PACKET3_CLEAR_STATE, 0));
+ radeon_ring_write(rdev, 0);
+
+ /* SQ_VTX_BASE_VTX_LOC */
+ radeon_ring_write(rdev, 0xc0026f00);
+ radeon_ring_write(rdev, 0x00000000);
+ radeon_ring_write(rdev, 0x00000000);
+ radeon_ring_write(rdev, 0x00000000);
+
+ /* Clear consts */
+ radeon_ring_write(rdev, 0xc0036f00);
+ radeon_ring_write(rdev, 0x00000bc4);
+ radeon_ring_write(rdev, 0xffffffff);
+ radeon_ring_write(rdev, 0xffffffff);
+ radeon_ring_write(rdev, 0xffffffff);
+
+ radeon_ring_unlock_commit(rdev);
+
+ /* XXX init other rings */
+
+ return 0;
+}
+
+int cayman_cp_resume(struct radeon_device *rdev)
+{
+ u32 tmp;
+ u32 rb_bufsz;
+ int r;
+
+ /* Reset cp; if cp is reset, then PA, SH, VGT also need to be reset */
+ WREG32(GRBM_SOFT_RESET, (SOFT_RESET_CP |
+ SOFT_RESET_PA |
+ SOFT_RESET_SH |
+ SOFT_RESET_VGT |
+ SOFT_RESET_SX));
+ RREG32(GRBM_SOFT_RESET);
+ mdelay(15);
+ WREG32(GRBM_SOFT_RESET, 0);
+ RREG32(GRBM_SOFT_RESET);
+
+ WREG32(CP_SEM_WAIT_TIMER, 0x4);
+
+ /* Set the write pointer delay */
+ WREG32(CP_RB_WPTR_DELAY, 0);
+
+ WREG32(CP_DEBUG, (1 << 27));
+
+ /* ring 0 - compute and gfx */
+ /* Set ring buffer size */
+ rb_bufsz = drm_order(rdev->cp.ring_size / 8);
+ tmp = (drm_order(RADEON_GPU_PAGE_SIZE/8) << 8) | rb_bufsz;
+#ifdef __BIG_ENDIAN
+ tmp |= BUF_SWAP_32BIT;
+#endif
+ WREG32(CP_RB0_CNTL, tmp);
+
+ /* Initialize the ring buffer's read and write pointers */
+ WREG32(CP_RB0_CNTL, tmp | RB_RPTR_WR_ENA);
+ WREG32(CP_RB0_WPTR, 0);
+
+ /* set the wb address wether it's enabled or not */
+ WREG32(CP_RB0_RPTR_ADDR, (rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFFFFFFFC);
+ WREG32(CP_RB0_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFF);
+ WREG32(SCRATCH_ADDR, ((rdev->wb.gpu_addr + RADEON_WB_SCRATCH_OFFSET) >> 8) & 0xFFFFFFFF);
+
+ if (rdev->wb.enabled)
+ WREG32(SCRATCH_UMSK, 0xff);
+ else {
+ tmp |= RB_NO_UPDATE;
+ WREG32(SCRATCH_UMSK, 0);
+ }
+
+ mdelay(1);
+ WREG32(CP_RB0_CNTL, tmp);
+
+ WREG32(CP_RB0_BASE, rdev->cp.gpu_addr >> 8);
+
+ rdev->cp.rptr = RREG32(CP_RB0_RPTR);
+ rdev->cp.wptr = RREG32(CP_RB0_WPTR);
+
+ /* ring1 - compute only */
+ /* Set ring buffer size */
+ rb_bufsz = drm_order(rdev->cp1.ring_size / 8);
+ tmp = (drm_order(RADEON_GPU_PAGE_SIZE/8) << 8) | rb_bufsz;
+#ifdef __BIG_ENDIAN
+ tmp |= BUF_SWAP_32BIT;
+#endif
+ WREG32(CP_RB1_CNTL, tmp);
+
+ /* Initialize the ring buffer's read and write pointers */
+ WREG32(CP_RB1_CNTL, tmp | RB_RPTR_WR_ENA);
+ WREG32(CP_RB1_WPTR, 0);
+
+ /* set the wb address wether it's enabled or not */
+ WREG32(CP_RB1_RPTR_ADDR, (rdev->wb.gpu_addr + RADEON_WB_CP1_RPTR_OFFSET) & 0xFFFFFFFC);
+ WREG32(CP_RB1_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP1_RPTR_OFFSET) & 0xFF);
+
+ mdelay(1);
+ WREG32(CP_RB1_CNTL, tmp);
+
+ WREG32(CP_RB1_BASE, rdev->cp1.gpu_addr >> 8);
+
+ rdev->cp1.rptr = RREG32(CP_RB1_RPTR);
+ rdev->cp1.wptr = RREG32(CP_RB1_WPTR);
+
+ /* ring2 - compute only */
+ /* Set ring buffer size */
+ rb_bufsz = drm_order(rdev->cp2.ring_size / 8);
+ tmp = (drm_order(RADEON_GPU_PAGE_SIZE/8) << 8) | rb_bufsz;
+#ifdef __BIG_ENDIAN
+ tmp |= BUF_SWAP_32BIT;
+#endif
+ WREG32(CP_RB2_CNTL, tmp);
+
+ /* Initialize the ring buffer's read and write pointers */
+ WREG32(CP_RB2_CNTL, tmp | RB_RPTR_WR_ENA);
+ WREG32(CP_RB2_WPTR, 0);
+
+ /* set the wb address wether it's enabled or not */
+ WREG32(CP_RB2_RPTR_ADDR, (rdev->wb.gpu_addr + RADEON_WB_CP2_RPTR_OFFSET) & 0xFFFFFFFC);
+ WREG32(CP_RB2_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP2_RPTR_OFFSET) & 0xFF);
+
+ mdelay(1);
+ WREG32(CP_RB2_CNTL, tmp);
+
+ WREG32(CP_RB2_BASE, rdev->cp2.gpu_addr >> 8);
+
+ rdev->cp2.rptr = RREG32(CP_RB2_RPTR);
+ rdev->cp2.wptr = RREG32(CP_RB2_WPTR);
+
+ /* start the rings */
+ cayman_cp_start(rdev);
+ rdev->cp.ready = true;
+ rdev->cp1.ready = true;
+ rdev->cp2.ready = true;
+ /* this only test cp0 */
+ r = radeon_ring_test(rdev);
+ if (r) {
+ rdev->cp.ready = false;
+ rdev->cp1.ready = false;
+ rdev->cp2.ready = false;
+ return r;
+ }
+
+ return 0;
+}
+