drm/radeon/kms/evergreen: setup and enable the CP
The command processor (CP) fetches command buffers and
feeds the GPU. This patch requires the evergreen
family me and pfp ucode files.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 26b219b..57fe569 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -32,6 +32,9 @@
#include "avivod.h"
#include "evergreen_reg.h"
+#define EVERGREEN_PFP_UCODE_SIZE 1120
+#define EVERGREEN_PM4_UCODE_SIZE 1376
+
static void evergreen_gpu_init(struct radeon_device *rdev);
void evergreen_fini(struct radeon_device *rdev);
@@ -418,23 +421,91 @@
rv515_vga_render_disable(rdev);
}
-#if 0
/*
* CP.
*/
-static void evergreen_cp_stop(struct radeon_device *rdev)
-{
- /* XXX */
-}
-
static int evergreen_cp_load_microcode(struct radeon_device *rdev)
{
- /* XXX */
+ const __be32 *fw_data;
+ int i;
+ if (!rdev->me_fw || !rdev->pfp_fw)
+ return -EINVAL;
+
+ r700_cp_stop(rdev);
+ WREG32(CP_RB_CNTL, RB_NO_UPDATE | (15 << 8) | (3 << 0));
+
+ fw_data = (const __be32 *)rdev->pfp_fw->data;
+ WREG32(CP_PFP_UCODE_ADDR, 0);
+ for (i = 0; i < EVERGREEN_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 < EVERGREEN_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;
}
+
+int evergreen_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);
+
+ /* Set ring buffer size */
+ rb_bufsz = drm_order(rdev->cp.ring_size / 8);
+ tmp = RB_NO_UPDATE | (drm_order(RADEON_GPU_PAGE_SIZE/8) << 8) | rb_bufsz;
+#ifdef __BIG_ENDIAN
+ tmp |= BUF_SWAP_32BIT;
#endif
+ WREG32(CP_RB_CNTL, tmp);
+ WREG32(CP_SEM_WAIT_TIMER, 0x4);
+
+ /* Set the write pointer delay */
+ WREG32(CP_RB_WPTR_DELAY, 0);
+
+ /* Initialize the ring buffer's read and write pointers */
+ WREG32(CP_RB_CNTL, tmp | RB_RPTR_WR_ENA);
+ WREG32(CP_RB_RPTR_WR, 0);
+ WREG32(CP_RB_WPTR, 0);
+ WREG32(CP_RB_RPTR_ADDR, rdev->cp.gpu_addr & 0xFFFFFFFF);
+ WREG32(CP_RB_RPTR_ADDR_HI, upper_32_bits(rdev->cp.gpu_addr));
+ mdelay(1);
+ WREG32(CP_RB_CNTL, tmp);
+
+ WREG32(CP_RB_BASE, rdev->cp.gpu_addr >> 8);
+ WREG32(CP_DEBUG, (1 << 27) | (1 << 28));
+
+ rdev->cp.rptr = RREG32(CP_RB_RPTR);
+ rdev->cp.wptr = RREG32(CP_RB_WPTR);
+
+ r600_cp_start(rdev);
+ rdev->cp.ready = true;
+ r = radeon_ring_test(rdev);
+ if (r) {
+ rdev->cp.ready = false;
+ return r;
+ }
+ return 0;
+}
/*
* Core functions
@@ -1138,15 +1209,15 @@
{
int r;
-#if 0
- if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
+ /* XXX until interrupts are supported */
+ if (!rdev->me_fw || !rdev->pfp_fw /*|| !rdev->rlc_fw*/) {
r = r600_init_microcode(rdev);
if (r) {
DRM_ERROR("Failed to load firmware!\n");
return r;
}
}
-#endif
+
evergreen_mc_program(rdev);
if (rdev->flags & RADEON_IS_AGP) {
evergreen_agp_enable(rdev);
@@ -1184,6 +1255,7 @@
return r;
}
r600_irq_set(rdev);
+#endif
r = radeon_ring_init(rdev, rdev->cp.ring_size);
if (r)
@@ -1191,12 +1263,12 @@
r = evergreen_cp_load_microcode(rdev);
if (r)
return r;
- r = r600_cp_resume(rdev);
+ r = evergreen_cp_resume(rdev);
if (r)
return r;
/* write back buffer are not vital so don't worry about failure */
r600_wb_enable(rdev);
-#endif
+
return 0;
}
@@ -1221,13 +1293,13 @@
DRM_ERROR("r600 startup failed on resume\n");
return r;
}
-#if 0
+
r = r600_ib_test(rdev);
if (r) {
DRM_ERROR("radeon: failled testing IB (%d).\n", r);
return r;
}
-#endif
+
return r;
}
@@ -1236,12 +1308,11 @@
{
#if 0
int r;
-
+#endif
/* FIXME: we should wait for ring to be empty */
r700_cp_stop(rdev);
rdev->cp.ready = false;
r600_wb_disable(rdev);
-#endif
evergreen_pcie_gart_disable(rdev);
#if 0
@@ -1348,10 +1419,10 @@
r = radeon_irq_kms_init(rdev);
if (r)
return r;
-
+#endif
rdev->cp.ring_obj = NULL;
r600_ring_init(rdev, 1024 * 1024);
-
+#if 0
rdev->ih.ring_obj = NULL;
r600_ih_ring_init(rdev, 64 * 1024);
#endif
@@ -1362,9 +1433,13 @@
rdev->accel_working = false;
r = evergreen_startup(rdev);
if (r) {
- evergreen_suspend(rdev);
- /*r600_wb_fini(rdev);*/
- /*radeon_ring_fini(rdev);*/
+ dev_err(rdev->dev, "disabling GPU acceleration\n");
+ r700_cp_fini(rdev);
+ r600_wb_fini(rdev);
+#if 0
+ r600_irq_fini(rdev);
+ radeon_irq_kms_fini(rdev);
+#endif
evergreen_pcie_gart_fini(rdev);
rdev->accel_working = false;
}