Commit 130e0371 authored by Oded Gabbay's avatar Oded Gabbay

drm/amdgpu: Add H/W agnostic amdgpu <--> amdkfd interface

This patch adds an interface file between amdgpu and amdkfd. This
interface file is H/W agnostic, thus containing functions that
operate the same for any AMD APU/GPU H/W generation.

The functions in this interface mirror (some) of the functions in
radeon_kfd.c (the radeon<-->amdkfd interface file). The main functions
are:

- amdgpu_amdkfd_init - initialize the amdkfd module
- amdgpu_amdkfd_load_interface - load the H/W interface according to the
  currently probed device
- amdgpu_amdkfd_device_probe - probe the device in amdkfd
- amdgpu_amdkfd_device_init - initialize the device in amdkfd
- amdgpu_amdkfd_interrupt - call the ISR of amdkfd
- amdgpu_amdkfd_suspend - suspend callback from amdgpu
- amdgpu_amdkfd_resume - resume callback from amdgpu

This patch also modifies the relevant amdgpu files, to use this new
interface.
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent 22801f76
......@@ -636,6 +636,8 @@ M: Oded Gabbay <oded.gabbay@gmail.com>
L: dri-devel@lists.freedesktop.org
T: git git://people.freedesktop.org/~gabbayo/linux.git
S: Supported
F: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
F: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
F: drivers/gpu/drm/amd/amdkfd/
F: drivers/gpu/drm/amd/include/cik_structs.h
F: drivers/gpu/drm/amd/include/kgd_kfd_interface.h
......
......@@ -71,6 +71,10 @@ amdgpu-y += \
amdgpu_vce.o \
vce_v3_0.o
# add amdkfd interfaces
amdgpu-y += \
amdgpu_amdkfd.o
amdgpu-$(CONFIG_COMPAT) += amdgpu_ioc32.o
amdgpu-$(CONFIG_VGA_SWITCHEROO) += amdgpu_atpx_handler.o
amdgpu-$(CONFIG_ACPI) += amdgpu_acpi.o
......
......@@ -2011,6 +2011,9 @@ struct amdgpu_device {
/* tracking pinned memory */
u64 vram_pin_size;
u64 gart_pin_size;
/* amdkfd interface */
struct kfd_dev *kfd;
};
bool amdgpu_device_is_px(struct drm_device *dev);
......
/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "amdgpu_amdkfd.h"
#include "amdgpu_family.h"
#include <drm/drmP.h>
#include "amdgpu.h"
#include <linux/module.h>
const struct kfd2kgd_calls *kfd2kgd;
const struct kgd2kfd_calls *kgd2kfd;
bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
bool amdgpu_amdkfd_init(void)
{
#if defined(CONFIG_HSA_AMD_MODULE)
bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
kgd2kfd_init_p = symbol_request(kgd2kfd_init);
if (kgd2kfd_init_p == NULL)
return false;
#endif
return true;
}
bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
{
#if defined(CONFIG_HSA_AMD_MODULE)
bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
#endif
switch (rdev->asic_type) {
case CHIP_KAVERI:
default:
return false;
}
#if defined(CONFIG_HSA_AMD_MODULE)
kgd2kfd_init_p = symbol_request(kgd2kfd_init);
if (kgd2kfd_init_p == NULL) {
kfd2kgd = NULL;
return false;
}
if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) {
symbol_put(kgd2kfd_init);
kfd2kgd = NULL;
kgd2kfd = NULL;
return false;
}
return true;
#elif defined(CONFIG_HSA_AMD)
if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) {
kfd2kgd = NULL;
kgd2kfd = NULL;
return false;
}
return true;
#else
kfd2kgd = NULL;
return false;
#endif
}
void amdgpu_amdkfd_fini(void)
{
if (kgd2kfd) {
kgd2kfd->exit();
symbol_put(kgd2kfd_init);
}
}
void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev)
{
if (kgd2kfd)
rdev->kfd = kgd2kfd->probe((struct kgd_dev *)rdev,
rdev->pdev, kfd2kgd);
}
void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev)
{
if (rdev->kfd) {
struct kgd2kfd_shared_resources gpu_resources = {
.compute_vmid_bitmap = 0xFF00,
.first_compute_pipe = 1,
.compute_pipe_count = 4 - 1,
};
amdgpu_doorbell_get_kfd_info(rdev,
&gpu_resources.doorbell_physical_address,
&gpu_resources.doorbell_aperture_size,
&gpu_resources.doorbell_start_offset);
kgd2kfd->device_init(rdev->kfd, &gpu_resources);
}
}
void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev)
{
if (rdev->kfd) {
kgd2kfd->device_exit(rdev->kfd);
rdev->kfd = NULL;
}
}
void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
const void *ih_ring_entry)
{
if (rdev->kfd)
kgd2kfd->interrupt(rdev->kfd, ih_ring_entry);
}
void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev)
{
if (rdev->kfd)
kgd2kfd->suspend(rdev->kfd);
}
int amdgpu_amdkfd_resume(struct amdgpu_device *rdev)
{
int r = 0;
if (rdev->kfd)
r = kgd2kfd->resume(rdev->kfd);
return r;
}
u32 pool_to_domain(enum kgd_memory_pool p)
{
switch (p) {
case KGD_POOL_FRAMEBUFFER: return AMDGPU_GEM_DOMAIN_VRAM;
default: return AMDGPU_GEM_DOMAIN_GTT;
}
}
int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
void **mem_obj, uint64_t *gpu_addr,
void **cpu_ptr)
{
struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
struct kgd_mem **mem = (struct kgd_mem **) mem_obj;
int r;
BUG_ON(kgd == NULL);
BUG_ON(gpu_addr == NULL);
BUG_ON(cpu_ptr == NULL);
*mem = kmalloc(sizeof(struct kgd_mem), GFP_KERNEL);
if ((*mem) == NULL)
return -ENOMEM;
r = amdgpu_bo_create(rdev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_GTT,
AMDGPU_GEM_CREATE_CPU_GTT_USWC, NULL, &(*mem)->bo);
if (r) {
dev_err(rdev->dev,
"failed to allocate BO for amdkfd (%d)\n", r);
return r;
}
/* map the buffer */
r = amdgpu_bo_reserve((*mem)->bo, true);
if (r) {
dev_err(rdev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
goto allocate_mem_reserve_bo_failed;
}
r = amdgpu_bo_pin((*mem)->bo, AMDGPU_GEM_DOMAIN_GTT,
&(*mem)->gpu_addr);
if (r) {
dev_err(rdev->dev, "(%d) failed to pin bo for amdkfd\n", r);
goto allocate_mem_pin_bo_failed;
}
*gpu_addr = (*mem)->gpu_addr;
r = amdgpu_bo_kmap((*mem)->bo, &(*mem)->cpu_ptr);
if (r) {
dev_err(rdev->dev,
"(%d) failed to map bo to kernel for amdkfd\n", r);
goto allocate_mem_kmap_bo_failed;
}
*cpu_ptr = (*mem)->cpu_ptr;
amdgpu_bo_unreserve((*mem)->bo);
return 0;
allocate_mem_kmap_bo_failed:
amdgpu_bo_unpin((*mem)->bo);
allocate_mem_pin_bo_failed:
amdgpu_bo_unreserve((*mem)->bo);
allocate_mem_reserve_bo_failed:
amdgpu_bo_unref(&(*mem)->bo);
return r;
}
void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
{
struct kgd_mem *mem = (struct kgd_mem *) mem_obj;
BUG_ON(mem == NULL);
amdgpu_bo_reserve(mem->bo, true);
amdgpu_bo_kunmap(mem->bo);
amdgpu_bo_unpin(mem->bo);
amdgpu_bo_unreserve(mem->bo);
amdgpu_bo_unref(&(mem->bo));
kfree(mem);
}
uint64_t get_vmem_size(struct kgd_dev *kgd)
{
struct amdgpu_device *rdev =
(struct amdgpu_device *)kgd;
BUG_ON(kgd == NULL);
return rdev->mc.real_vram_size;
}
uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
{
struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
if (rdev->asic_funcs->get_gpu_clock_counter)
return rdev->asic_funcs->get_gpu_clock_counter(rdev);
return 0;
}
uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
{
struct amdgpu_device *rdev = (struct amdgpu_device *)kgd;
/* The sclk is in quantas of 10kHz */
return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100;
}
/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */
#ifndef AMDGPU_AMDKFD_H_INCLUDED
#define AMDGPU_AMDKFD_H_INCLUDED
#include <linux/types.h>
#include <kgd_kfd_interface.h>
struct amdgpu_device;
struct kgd_mem {
struct amdgpu_bo *bo;
uint64_t gpu_addr;
void *cpu_ptr;
};
bool amdgpu_amdkfd_init(void);
void amdgpu_amdkfd_fini(void);
bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev);
void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev);
int amdgpu_amdkfd_resume(struct amdgpu_device *rdev);
void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
const void *ih_ring_entry);
void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev);
void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev);
void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev);
struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
/* Shared API */
int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
void **mem_obj, uint64_t *gpu_addr,
void **cpu_ptr);
void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
uint64_t get_vmem_size(struct kgd_dev *kgd);
uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
#endif /* AMDGPU_AMDKFD_H_INCLUDED */
......@@ -44,6 +44,8 @@
#include "amdgpu.h"
#include "amdgpu_irq.h"
#include "amdgpu_amdkfd.h"
/*
* KMS wrapper.
* - 3.0.0 - initial driver
......@@ -527,12 +529,15 @@ static int __init amdgpu_init(void)
driver->num_ioctls = amdgpu_max_kms_ioctl;
amdgpu_register_atpx_handler();
amdgpu_amdkfd_init();
/* let modprobe override vga console setting */
return drm_pci_init(driver, pdriver);
}
static void __exit amdgpu_exit(void)
{
amdgpu_amdkfd_fini();
drm_pci_exit(driver, pdriver);
amdgpu_unregister_atpx_handler();
}
......
......@@ -24,6 +24,7 @@
#include <drm/drmP.h>
#include "amdgpu.h"
#include "amdgpu_ih.h"
#include "amdgpu_amdkfd.h"
/**
* amdgpu_ih_ring_alloc - allocate memory for the IH ring
......@@ -199,6 +200,12 @@ int amdgpu_ih_process(struct amdgpu_device *adev)
rmb();
while (adev->irq.ih.rptr != wptr) {
u32 ring_index = adev->irq.ih.rptr >> 2;
/* Before dispatching irq to IP blocks, send it to amdkfd */
amdgpu_amdkfd_interrupt(adev,
(const void *) &adev->irq.ih.ring[ring_index]);
amdgpu_ih_decode_iv(adev, &entry);
adev->irq.ih.rptr &= adev->irq.ih.ptr_mask;
......
......@@ -34,6 +34,7 @@
#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include "amdgpu_amdkfd.h"
#if defined(CONFIG_VGA_SWITCHEROO)
bool amdgpu_has_atpx(void);
......@@ -61,6 +62,8 @@ int amdgpu_driver_unload_kms(struct drm_device *dev)
pm_runtime_get_sync(dev->dev);
amdgpu_amdkfd_device_fini(adev);
amdgpu_acpi_fini(adev);
amdgpu_device_fini(adev);
......@@ -118,6 +121,10 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
"Error during ACPI methods call\n");
}
amdgpu_amdkfd_load_interface(adev);
amdgpu_amdkfd_device_probe(adev);
amdgpu_amdkfd_device_init(adev);
if (amdgpu_device_is_px(dev)) {
pm_runtime_use_autosuspend(dev->dev);
pm_runtime_set_autosuspend_delay(dev->dev, 5000);
......
......@@ -64,6 +64,8 @@
#include "oss/oss_2_0_d.h"
#include "oss/oss_2_0_sh_mask.h"
#include "amdgpu_amdkfd.h"
/*
* Indirect registers accessor
*/
......@@ -2448,14 +2450,21 @@ static int cik_common_suspend(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_amdkfd_suspend(adev);
return cik_common_hw_fini(adev);
}
static int cik_common_resume(void *handle)
{
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
return cik_common_hw_init(adev);
r = cik_common_hw_init(adev);
if (r)
return r;
return amdgpu_amdkfd_resume(adev);
}
static bool cik_common_is_idle(void *handle)
......
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