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-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu.h7
-rw-r--r--drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c15
-rw-r--r--drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c15
-rw-r--r--drivers/gpu/drm/amd/amdgpu/soc15.c11
-rw-r--r--include/uapi/linux/kfd_ioctl.h7
5 files changed, 49 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 14398f55f602..23c3375623d7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -639,6 +639,11 @@ struct nbio_hdp_flush_reg {
u32 ref_and_mask_sdma1;
};
+struct amdgpu_mmio_remap {
+ u32 reg_offset;
+ resource_size_t bus_addr;
+};
+
struct amdgpu_nbio_funcs {
const struct nbio_hdp_flush_reg *hdp_flush_reg;
u32 (*get_hdp_flush_req_offset)(struct amdgpu_device *adev);
@@ -666,6 +671,7 @@ struct amdgpu_nbio_funcs {
void (*ih_control)(struct amdgpu_device *adev);
void (*init_registers)(struct amdgpu_device *adev);
void (*detect_hw_virt)(struct amdgpu_device *adev);
+ void (*remap_hdp_registers)(struct amdgpu_device *adev);
};
struct amdgpu_df_funcs {
@@ -764,6 +770,7 @@ struct amdgpu_device {
void __iomem *rmmio;
/* protects concurrent MM_INDEX/DATA based register access */
spinlock_t mmio_idx_lock;
+ struct amdgpu_mmio_remap rmmio_remap;
/* protects concurrent SMC based register access */
spinlock_t smc_idx_lock;
amdgpu_rreg_t smc_rreg;
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
index 1cdb98ad2db3..73419fa38159 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
@@ -29,9 +29,18 @@
#include "nbio/nbio_7_0_sh_mask.h"
#include "nbio/nbio_7_0_smn.h"
#include "vega10_enum.h"
+#include <uapi/linux/kfd_ioctl.h>
#define smnNBIF_MGCG_CTRL_LCLK 0x1013a05c
+static void nbio_v7_0_remap_hdp_registers(struct amdgpu_device *adev)
+{
+ WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
+ adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
+ WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
+ adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
+}
+
static u32 nbio_v7_0_get_rev_id(struct amdgpu_device *adev)
{
u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
@@ -55,10 +64,9 @@ static void nbio_v7_0_hdp_flush(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
if (!ring || !ring->funcs->emit_wreg)
- WREG32_SOC15_NO_KIQ(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+ WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
else
- amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET(
- NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL), 0);
+ amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
}
static u32 nbio_v7_0_get_memsize(struct amdgpu_device *adev)
@@ -283,4 +291,5 @@ const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
.ih_control = nbio_v7_0_ih_control,
.init_registers = nbio_v7_0_init_registers,
.detect_hw_virt = nbio_v7_0_detect_hw_virt,
+ .remap_hdp_registers = nbio_v7_0_remap_hdp_registers,
};
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index c69d51598cfe..bfaaa327ae3c 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -27,9 +27,18 @@
#include "nbio/nbio_7_4_offset.h"
#include "nbio/nbio_7_4_sh_mask.h"
#include "nbio/nbio_7_4_0_smn.h"
+#include <uapi/linux/kfd_ioctl.h>
#define smnNBIF_MGCG_CTRL_LCLK 0x1013a21c
+static void nbio_v7_4_remap_hdp_registers(struct amdgpu_device *adev)
+{
+ WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
+ adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
+ WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
+ adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
+}
+
static u32 nbio_v7_4_get_rev_id(struct amdgpu_device *adev)
{
u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
@@ -53,10 +62,9 @@ static void nbio_v7_4_hdp_flush(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
if (!ring || !ring->funcs->emit_wreg)
- WREG32_SOC15_NO_KIQ(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+ WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
else
- amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET(
- NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL), 0);
+ amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
}
static u32 nbio_v7_4_get_memsize(struct amdgpu_device *adev)
@@ -262,4 +270,5 @@ const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
.ih_control = nbio_v7_4_ih_control,
.init_registers = nbio_v7_4_init_registers,
.detect_hw_virt = nbio_v7_4_detect_hw_virt,
+ .remap_hdp_registers = nbio_v7_4_remap_hdp_registers,
};
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 4900e4958dec..78bd00a0142f 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -44,6 +44,7 @@
#include "smuio/smuio_9_0_offset.h"
#include "smuio/smuio_9_0_sh_mask.h"
#include "nbio/nbio_7_0_default.h"
+#include "nbio/nbio_7_0_offset.h"
#include "nbio/nbio_7_0_sh_mask.h"
#include "nbio/nbio_7_0_smn.h"
#include "mp/mp_9_0_offset.h"
@@ -64,6 +65,7 @@
#include "dce_virtual.h"
#include "mxgpu_ai.h"
#include "amdgpu_smu.h"
+#include <uapi/linux/kfd_ioctl.h>
#define mmMP0_MISC_CGTT_CTRL0 0x01b9
#define mmMP0_MISC_CGTT_CTRL0_BASE_IDX 0
@@ -783,8 +785,11 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs =
static int soc15_common_early_init(void *handle)
{
+#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
+ adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
adev->smc_rreg = NULL;
adev->smc_wreg = NULL;
adev->pcie_rreg = &soc15_pcie_rreg;
@@ -1014,6 +1019,12 @@ static int soc15_common_hw_init(void *handle)
soc15_program_aspm(adev);
/* setup nbio registers */
adev->nbio_funcs->init_registers(adev);
+ /* remap HDP registers to a hole in mmio space,
+ * for the purpose of expose those registers
+ * to process space
+ */
+ if (adev->nbio_funcs->remap_hdp_registers)
+ adev->nbio_funcs->remap_hdp_registers(adev);
/* enable the doorbell aperture */
soc15_enable_doorbell_aperture(adev, true);
/* HW doorbell routing policy: doorbell writing not
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index dc067ed0b72d..bb1b4280f53d 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -426,6 +426,13 @@ struct kfd_ioctl_import_dmabuf_args {
__u32 dmabuf_fd; /* to KFD */
};
+/* Register offset inside the remapped mmio page
+ */
+enum kfd_mmio_remap {
+ KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL = 0,
+ KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL = 4,
+};
+
#define AMDKFD_IOCTL_BASE 'K'
#define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr)
#define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type)
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-04 05:44:30 +0300