drm/radeon: Add CP init for CIK (v7)
Sets up the GFX ring and loads ucode for GFX and Compute.
Todo:
- handle compute queue setup.
v2: add documentation
v3: integrate with latest reset changes
v4: additional init fixes
v5: scratch reg write back no longer supported on CIK
v6: properly set CP_RB0_BASE_HI
v7: rebase
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 8eec582..5712526 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -30,6 +30,7 @@
#include "radeon_asic.h"
#include "cikd.h"
#include "atom.h"
+#include "cik_blit_shaders.h"
/* GFX */
#define CIK_PFP_UCODE_SIZE 2144
@@ -1491,6 +1492,400 @@
udelay(50);
}
+/*
+ * CP.
+ * On CIK, gfx and compute now have independant command processors.
+ *
+ * GFX
+ * Gfx consists of a single ring and can process both gfx jobs and
+ * compute jobs. The gfx CP consists of three microengines (ME):
+ * PFP - Pre-Fetch Parser
+ * ME - Micro Engine
+ * CE - Constant Engine
+ * The PFP and ME make up what is considered the Drawing Engine (DE).
+ * The CE is an asynchronous engine used for updating buffer desciptors
+ * used by the DE so that they can be loaded into cache in parallel
+ * while the DE is processing state update packets.
+ *
+ * Compute
+ * The compute CP consists of two microengines (ME):
+ * MEC1 - Compute MicroEngine 1
+ * MEC2 - Compute MicroEngine 2
+ * Each MEC supports 4 compute pipes and each pipe supports 8 queues.
+ * The queues are exposed to userspace and are programmed directly
+ * by the compute runtime.
+ */
+/**
+ * cik_cp_gfx_enable - enable/disable the gfx CP MEs
+ *
+ * @rdev: radeon_device pointer
+ * @enable: enable or disable the MEs
+ *
+ * Halts or unhalts the gfx MEs.
+ */
+static void cik_cp_gfx_enable(struct radeon_device *rdev, bool enable)
+{
+ if (enable)
+ WREG32(CP_ME_CNTL, 0);
+ else {
+ WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT | CP_CE_HALT));
+ rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false;
+ }
+ udelay(50);
+}
+
+/**
+ * cik_cp_gfx_load_microcode - load the gfx CP ME ucode
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Loads the gfx PFP, ME, and CE ucode.
+ * Returns 0 for success, -EINVAL if the ucode is not available.
+ */
+static int cik_cp_gfx_load_microcode(struct radeon_device *rdev)
+{
+ const __be32 *fw_data;
+ int i;
+
+ if (!rdev->me_fw || !rdev->pfp_fw || !rdev->ce_fw)
+ return -EINVAL;
+
+ cik_cp_gfx_enable(rdev, false);
+
+ /* PFP */
+ fw_data = (const __be32 *)rdev->pfp_fw->data;
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+ for (i = 0; i < CIK_PFP_UCODE_SIZE; i++)
+ WREG32(CP_PFP_UCODE_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+
+ /* CE */
+ fw_data = (const __be32 *)rdev->ce_fw->data;
+ WREG32(CP_CE_UCODE_ADDR, 0);
+ for (i = 0; i < CIK_CE_UCODE_SIZE; i++)
+ WREG32(CP_CE_UCODE_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_CE_UCODE_ADDR, 0);
+
+ /* ME */
+ fw_data = (const __be32 *)rdev->me_fw->data;
+ WREG32(CP_ME_RAM_WADDR, 0);
+ for (i = 0; i < CIK_ME_UCODE_SIZE; i++)
+ WREG32(CP_ME_RAM_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_ME_RAM_WADDR, 0);
+
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+ WREG32(CP_CE_UCODE_ADDR, 0);
+ WREG32(CP_ME_RAM_WADDR, 0);
+ WREG32(CP_ME_RAM_RADDR, 0);
+ return 0;
+}
+
+/**
+ * cik_cp_gfx_start - start the gfx ring
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Enables the ring and loads the clear state context and other
+ * packets required to init the ring.
+ * Returns 0 for success, error for failure.
+ */
+static int cik_cp_gfx_start(struct radeon_device *rdev)
+{
+ struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
+ int r, i;
+
+ /* init the CP */
+ WREG32(CP_MAX_CONTEXT, rdev->config.cik.max_hw_contexts - 1);
+ WREG32(CP_ENDIAN_SWAP, 0);
+ WREG32(CP_DEVICE_ID, 1);
+
+ cik_cp_gfx_enable(rdev, true);
+
+ r = radeon_ring_lock(rdev, ring, cik_default_size + 17);
+ if (r) {
+ DRM_ERROR("radeon: cp failed to lock ring (%d).\n", r);
+ return r;
+ }
+
+ /* init the CE partitions. CE only used for gfx on CIK */
+ radeon_ring_write(ring, PACKET3(PACKET3_SET_BASE, 2));
+ radeon_ring_write(ring, PACKET3_BASE_INDEX(CE_PARTITION_BASE));
+ radeon_ring_write(ring, 0xc000);
+ radeon_ring_write(ring, 0xc000);
+
+ /* setup clear context state */
+ radeon_ring_write(ring, PACKET3(PACKET3_PREAMBLE_CNTL, 0));
+ radeon_ring_write(ring, PACKET3_PREAMBLE_BEGIN_CLEAR_STATE);
+
+ radeon_ring_write(ring, PACKET3(PACKET3_CONTEXT_CONTROL, 1));
+ radeon_ring_write(ring, 0x80000000);
+ radeon_ring_write(ring, 0x80000000);
+
+ for (i = 0; i < cik_default_size; i++)
+ radeon_ring_write(ring, cik_default_state[i]);
+
+ radeon_ring_write(ring, PACKET3(PACKET3_PREAMBLE_CNTL, 0));
+ radeon_ring_write(ring, PACKET3_PREAMBLE_END_CLEAR_STATE);
+
+ /* set clear context state */
+ radeon_ring_write(ring, PACKET3(PACKET3_CLEAR_STATE, 0));
+ radeon_ring_write(ring, 0);
+
+ radeon_ring_write(ring, PACKET3(PACKET3_SET_CONTEXT_REG, 2));
+ radeon_ring_write(ring, 0x00000316);
+ radeon_ring_write(ring, 0x0000000e); /* VGT_VERTEX_REUSE_BLOCK_CNTL */
+ radeon_ring_write(ring, 0x00000010); /* VGT_OUT_DEALLOC_CNTL */
+
+ radeon_ring_unlock_commit(rdev, ring);
+
+ return 0;
+}
+
+/**
+ * cik_cp_gfx_fini - stop the gfx ring
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Stop the gfx ring and tear down the driver ring
+ * info.
+ */
+static void cik_cp_gfx_fini(struct radeon_device *rdev)
+{
+ cik_cp_gfx_enable(rdev, false);
+ radeon_ring_fini(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]);
+}
+
+/**
+ * cik_cp_gfx_resume - setup the gfx ring buffer registers
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Program the location and size of the gfx ring buffer
+ * and test it to make sure it's working.
+ * Returns 0 for success, error for failure.
+ */
+static int cik_cp_gfx_resume(struct radeon_device *rdev)
+{
+ struct radeon_ring *ring;
+ u32 tmp;
+ u32 rb_bufsz;
+ u64 rb_addr;
+ int r;
+
+ WREG32(CP_SEM_WAIT_TIMER, 0x0);
+ WREG32(CP_SEM_INCOMPLETE_TIMER_CNTL, 0x0);
+
+ /* Set the write pointer delay */
+ WREG32(CP_RB_WPTR_DELAY, 0);
+
+ /* set the RB to use vmid 0 */
+ WREG32(CP_RB_VMID, 0);
+
+ WREG32(SCRATCH_ADDR, ((rdev->wb.gpu_addr + RADEON_WB_SCRATCH_OFFSET) >> 8) & 0xFFFFFFFF);
+
+ /* ring 0 - compute and gfx */
+ /* Set ring buffer size */
+ ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
+ rb_bufsz = drm_order(ring->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);
+ ring->wptr = 0;
+ WREG32(CP_RB0_WPTR, ring->wptr);
+
+ /* 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);
+
+ /* scratch register shadowing is no longer supported */
+ WREG32(SCRATCH_UMSK, 0);
+
+ if (!rdev->wb.enabled)
+ tmp |= RB_NO_UPDATE;
+
+ mdelay(1);
+ WREG32(CP_RB0_CNTL, tmp);
+
+ rb_addr = ring->gpu_addr >> 8;
+ WREG32(CP_RB0_BASE, rb_addr);
+ WREG32(CP_RB0_BASE_HI, upper_32_bits(rb_addr));
+
+ ring->rptr = RREG32(CP_RB0_RPTR);
+
+ /* start the ring */
+ cik_cp_gfx_start(rdev);
+ rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = true;
+ r = radeon_ring_test(rdev, RADEON_RING_TYPE_GFX_INDEX, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]);
+ if (r) {
+ rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false;
+ return r;
+ }
+ return 0;
+}
+
+/**
+ * cik_cp_compute_enable - enable/disable the compute CP MEs
+ *
+ * @rdev: radeon_device pointer
+ * @enable: enable or disable the MEs
+ *
+ * Halts or unhalts the compute MEs.
+ */
+static void cik_cp_compute_enable(struct radeon_device *rdev, bool enable)
+{
+ if (enable)
+ WREG32(CP_MEC_CNTL, 0);
+ else
+ WREG32(CP_MEC_CNTL, (MEC_ME1_HALT | MEC_ME2_HALT));
+ udelay(50);
+}
+
+/**
+ * cik_cp_compute_load_microcode - load the compute CP ME ucode
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Loads the compute MEC1&2 ucode.
+ * Returns 0 for success, -EINVAL if the ucode is not available.
+ */
+static int cik_cp_compute_load_microcode(struct radeon_device *rdev)
+{
+ const __be32 *fw_data;
+ int i;
+
+ if (!rdev->mec_fw)
+ return -EINVAL;
+
+ cik_cp_compute_enable(rdev, false);
+
+ /* MEC1 */
+ fw_data = (const __be32 *)rdev->mec_fw->data;
+ WREG32(CP_MEC_ME1_UCODE_ADDR, 0);
+ for (i = 0; i < CIK_MEC_UCODE_SIZE; i++)
+ WREG32(CP_MEC_ME1_UCODE_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_MEC_ME1_UCODE_ADDR, 0);
+
+ if (rdev->family == CHIP_KAVERI) {
+ /* MEC2 */
+ fw_data = (const __be32 *)rdev->mec_fw->data;
+ WREG32(CP_MEC_ME2_UCODE_ADDR, 0);
+ for (i = 0; i < CIK_MEC_UCODE_SIZE; i++)
+ WREG32(CP_MEC_ME2_UCODE_DATA, be32_to_cpup(fw_data++));
+ WREG32(CP_MEC_ME2_UCODE_ADDR, 0);
+ }
+
+ return 0;
+}
+
+/**
+ * cik_cp_compute_start - start the compute queues
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Enable the compute queues.
+ * Returns 0 for success, error for failure.
+ */
+static int cik_cp_compute_start(struct radeon_device *rdev)
+{
+ //todo
+ return 0;
+}
+
+/**
+ * cik_cp_compute_fini - stop the compute queues
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Stop the compute queues and tear down the driver queue
+ * info.
+ */
+static void cik_cp_compute_fini(struct radeon_device *rdev)
+{
+ cik_cp_compute_enable(rdev, false);
+ //todo
+}
+
+/**
+ * cik_cp_compute_resume - setup the compute queue registers
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Program the compute queues and test them to make sure they
+ * are working.
+ * Returns 0 for success, error for failure.
+ */
+static int cik_cp_compute_resume(struct radeon_device *rdev)
+{
+ int r;
+
+ //todo
+ r = cik_cp_compute_start(rdev);
+ if (r)
+ return r;
+ return 0;
+}
+
+/* XXX temporary wrappers to handle both compute and gfx */
+/* XXX */
+static void cik_cp_enable(struct radeon_device *rdev, bool enable)
+{
+ cik_cp_gfx_enable(rdev, enable);
+ cik_cp_compute_enable(rdev, enable);
+}
+
+/* XXX */
+static int cik_cp_load_microcode(struct radeon_device *rdev)
+{
+ int r;
+
+ r = cik_cp_gfx_load_microcode(rdev);
+ if (r)
+ return r;
+ r = cik_cp_compute_load_microcode(rdev);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+/* XXX */
+static void cik_cp_fini(struct radeon_device *rdev)
+{
+ cik_cp_gfx_fini(rdev);
+ cik_cp_compute_fini(rdev);
+}
+
+/* XXX */
+static int cik_cp_resume(struct radeon_device *rdev)
+{
+ int r;
+
+ /* Reset all cp blocks */
+ WREG32(GRBM_SOFT_RESET, SOFT_RESET_CP);
+ RREG32(GRBM_SOFT_RESET);
+ mdelay(15);
+ WREG32(GRBM_SOFT_RESET, 0);
+ RREG32(GRBM_SOFT_RESET);
+
+ r = cik_cp_load_microcode(rdev);
+ if (r)
+ return r;
+
+ r = cik_cp_gfx_resume(rdev);
+ if (r)
+ return r;
+ r = cik_cp_compute_resume(rdev);
+ if (r)
+ return r;
+
+ return 0;
+}
+
/**
* cik_gpu_is_lockup - check if the 3D engine is locked up
*