From: Alex Deucher <alexander.deuc...@amd.com>
RLC handles the interrupt controller and other tasks
on the GPU.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/radeon/radeon.h | 13 ++++
drivers/gpu/drm/radeon/si.c | 132 +++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/sid.h | 17 +++++
3 files changed, 162 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index f1c2f58..8275b41 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -772,6 +772,18 @@ struct r600_blit {
void r600_blit_suspend(struct radeon_device *rdev);
+/*
+ * SI RLC stuff
+ */
+struct si_rlc {
+ /* for power gating */
+ struct radeon_bo *save_restore_obj;
+ uint64_t save_restore_gpu_addr;
+ /* for clear state */
+ struct radeon_bo *clear_state_obj;
+ uint64_t clear_state_gpu_addr;
+};
+
int radeon_ib_get(struct radeon_device *rdev, int ring,
struct radeon_ib **ib, unsigned size);
void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib **ib);
@@ -1532,6 +1544,7 @@ struct radeon_device {
struct r600_vram_scratch vram_scratch;
int msi_enabled; /* msi enabled */
struct r600_ih ih; /* r6/700 interrupt ring */
+ struct si_rlc rlc;
struct work_struct hotplug_work;
int num_crtc; /* number of crtcs */
struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 408119a..4252cd0 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2940,3 +2940,135 @@ void si_vm_tlb_flush(struct radeon_device *rdev, struct
radeon_vm *vm)
WREG32(VM_INVALIDATE_REQUEST, 1 << vm->id);
}
+/*
+ * RLC
+ */
+static void si_rlc_fini(struct radeon_device *rdev)
+{
+ int r;
+
+ /* save restore block */
+ if (rdev->rlc.save_restore_obj) {
+ r = radeon_bo_reserve(rdev->rlc.save_restore_obj, false);
+ if (unlikely(r != 0))
+ dev_warn(rdev->dev, "(%d) reserve RLC sr bo failed\n",
r);
+ radeon_bo_unpin(rdev->rlc.save_restore_obj);
+ radeon_bo_unreserve(rdev->rlc.save_restore_obj);
+
+ radeon_bo_unref(&rdev->rlc.save_restore_obj);
+ rdev->rlc.save_restore_obj = NULL;
+ }
+
+ /* clear state block */
+ if (rdev->rlc.clear_state_obj) {
+ r = radeon_bo_reserve(rdev->rlc.clear_state_obj, false);
+ if (unlikely(r != 0))
+ dev_warn(rdev->dev, "(%d) reserve RLC c bo failed\n",
r);
+ radeon_bo_unpin(rdev->rlc.clear_state_obj);
+ radeon_bo_unreserve(rdev->rlc.clear_state_obj);
+
+ radeon_bo_unref(&rdev->rlc.clear_state_obj);
+ rdev->rlc.clear_state_obj = NULL;
+ }
+}
+
+static int si_rlc_init(struct radeon_device *rdev)
+{
+ int r;
+
+ /* save restore block */
+ if (rdev->rlc.save_restore_obj == NULL) {
+ r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE,
true,
+ RADEON_GEM_DOMAIN_VRAM,
&rdev->rlc.save_restore_obj);
+ if (r) {
+ dev_warn(rdev->dev, "(%d) create RLC sr bo failed\n",
r);
+ return r;
+ }
+ }
+
+ r = radeon_bo_reserve(rdev->rlc.save_restore_obj, false);
+ if (unlikely(r != 0)) {
+ si_rlc_fini(rdev);
+ return r;
+ }
+ r = radeon_bo_pin(rdev->rlc.save_restore_obj, RADEON_GEM_DOMAIN_VRAM,
+ &rdev->rlc.save_restore_gpu_addr);
+ if (r) {
+ radeon_bo_unreserve(rdev->rlc.save_restore_obj);
+ dev_warn(rdev->dev, "(%d) pin RLC sr bo failed\n", r);
+ si_rlc_fini(rdev);
+ return r;
+ }
+
+ /* clear state block */
+ if (rdev->rlc.clear_state_obj == NULL) {
+ r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE,
true,
+ RADEON_GEM_DOMAIN_VRAM,
&rdev->rlc.clear_state_obj);
+ if (r) {
+ dev_warn(rdev->dev, "(%d) create RLC c bo failed\n", r);
+ si_rlc_fini(rdev);
+ return r;
+ }
+ }
+ r = radeon_bo_reserve(rdev->rlc.clear_state_obj, false);
+ if (unlikely(r != 0)) {
+ si_rlc_fini(rdev);
+ return r;
+ }
+ r = radeon_bo_pin(rdev->rlc.clear_state_obj, RADEON_GEM_DOMAIN_VRAM,
+ &rdev->rlc.clear_state_gpu_addr);
+ if (r) {
+
+ radeon_bo_unreserve(rdev->rlc.clear_state_obj);
+ dev_warn(rdev->dev, "(%d) pin RLC c bo failed\n", r);
+ si_rlc_fini(rdev);
+ return r;
+ }
+
+ return 0;
+}
+
+static void si_rlc_stop(struct radeon_device *rdev)
+{
+ WREG32(RLC_CNTL, 0);
+}
+
+static void si_rlc_start(struct radeon_device *rdev)
+{
+ WREG32(RLC_CNTL, RLC_ENABLE);
+}
+
+static int si_rlc_resume(struct radeon_device *rdev)
+{
+ u32 i;
+ const __be32 *fw_data;
+
+ if (!rdev->rlc_fw)
+ return -EINVAL;
+
+ si_rlc_stop(rdev);
+
+ WREG32(RLC_RL_BASE, 0);
+ WREG32(RLC_RL_SIZE, 0);
+ WREG32(RLC_LB_CNTL, 0);
+ WREG32(RLC_LB_CNTR_MAX, 0xffffffff);
+ WREG32(RLC_LB_CNTR_INIT, 0);
+
+ WREG32(RLC_SAVE_AND_RESTORE_BASE, rdev->rlc.save_restore_gpu_addr >> 8);
+ WREG32(RLC_CLEAR_STATE_RESTORE_BASE, rdev->rlc.clear_state_gpu_addr >>
8);
+
+ WREG32(RLC_MC_CNTL, 0);
+ WREG32(RLC_UCODE_CNTL, 0);
+
+ fw_data = (const __be32 *)rdev->rlc_fw->data;
+ for (i = 0; i < SI_RLC_UCODE_SIZE; i++) {
+ WREG32(RLC_UCODE_ADDR, i);
+ WREG32(RLC_UCODE_DATA, be32_to_cpup(fw_data++));
+ }
+ WREG32(RLC_UCODE_ADDR, 0);
+
+ si_rlc_start(rdev);
+
+ return 0;
+}
+
diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
index 904c4fd..78b5649 100644
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -513,6 +513,23 @@
#define CP_DEBUG 0xC1FC
+#define RLC_CNTL 0xC300
+# define RLC_ENABLE (1 << 0)
+#define RLC_RL_BASE 0xC304
+#define RLC_RL_SIZE 0xC308
+#define RLC_LB_CNTL 0xC30C
+#define RLC_SAVE_AND_RESTORE_BASE 0xC310
+#define RLC_LB_CNTR_MAX 0xC314
+#define RLC_LB_CNTR_INIT 0xC318
+
+#define RLC_CLEAR_STATE_RESTORE_BASE 0xC320
+
+#define RLC_UCODE_ADDR 0xC32C
+#define RLC_UCODE_DATA 0xC330
+
+#define RLC_MC_CNTL 0xC344
+#define RLC_UCODE_CNTL 0xC348
+
#define VGT_EVENT_INITIATOR 0x28a90
# define SAMPLE_STREAMOUTSTATS1 (1 << 0)
# define SAMPLE_STREAMOUTSTATS2 (2 << 0)
--
1.7.7.5
