/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include <linux/aperture.h>
#include <linux/power_supply.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/console.h>
#include <linux/slab.h>
#include <linux/iommu.h>
#include <linux/pci.h>
#include <linux/pci-p2pdma.h>
#include <linux/apple-gmux.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_client_event.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/amdgpu_drm.h>
#include <linux/device.h>
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>
#include <linux/efi.h>
#include "amdgpu.h"
#include "amdgpu_trace.h"
#include "amdgpu_i2c.h"
#include "atom.h"
#include "amdgpu_atombios.h"
#include "amdgpu_atomfirmware.h"
#include "amd_pcie.h"
#ifdef CONFIG_DRM_AMDGPU_SI
#include "si.h"
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
#include "cik.h"
#endif
#include "vi.h"
#include "soc15.h"
#include "nv.h"
#include "bif/bif_4_1_d.h"
#include <linux/firmware.h>
#include "amdgpu_vf_error.h"
#include "amdgpu_amdkfd.h"
#include "amdgpu_pm.h"
#include "amdgpu_xgmi.h"
#include "amdgpu_ras.h"
#include "amdgpu_pmu.h"
#include "amdgpu_fru_eeprom.h"
#include "amdgpu_reset.h"
#include "amdgpu_virt.h"
#include "amdgpu_dev_coredump.h"
#include <linux/suspend.h>
#include <drm/task_barrier.h>
#include <linux/pm_runtime.h>
#include <drm/drm_drv.h>
#if IS_ENABLED(CONFIG_X86)
#include <
asm/intel-family.h>
#include <
asm/cpu_device_id.h>
#endif
MODULE_FIRMWARE(
"amdgpu/vega10_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/vega12_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/raven_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/picasso_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/raven2_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/arcturus_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/navi12_gpu_info.bin");
MODULE_FIRMWARE(
"amdgpu/cyan_skillfish_gpu_info.bin");
#define AMDGPU_RESUME_MS 2000
#define AMDGPU_MAX_RETRY_LIMIT 2
#define AMDGPU_RETRY_SRIOV_RESET(r) ((r) == -EBUSY || (r) == -ETIMEDOUT || (r) == -EINVAL)
#define AMDGPU_PCIE_INDEX_FALLBACK (0x38 >> 2)
#define AMDGPU_PCIE_INDEX_HI_FALLBACK (0x44 >> 2)
#define AMDGPU_PCIE_DATA_FALLBACK (0x3C >> 2)
#define AMDGPU_VBIOS_SKIP (1U << 0)
#define AMDGPU_VBIOS_OPTIONAL (1U << 1)
static const struct drm_driver amdgpu_kms_driver;
const char *amdgpu_asic_name[] = {
"TAHITI",
"PITCAIRN",
"VERDE",
"OLAND",
"HAINAN",
"BONAIRE",
"KAVERI",
"KABINI",
"HAWAII",
"MULLINS",
"TOPAZ",
"TONGA",
"FIJI",
"CARRIZO",
"STONEY",
"POLARIS10",
"POLARIS11",
"POLARIS12",
"VEGAM",
"VEGA10",
"VEGA12",
"VEGA20",
"RAVEN",
"ARCTURUS",
"RENOIR",
"ALDEBARAN",
"NAVI10",
"CYAN_SKILLFISH",
"NAVI14",
"NAVI12",
"SIENNA_CICHLID",
"NAVY_FLOUNDER",
"VANGOGH",
"DIMGREY_CAVEFISH",
"BEIGE_GOBY",
"YELLOW_CARP",
"IP DISCOVERY",
"LAST",
};
#define AMDGPU_IP_BLK_MASK_ALL GENMASK(AMD_IP_BLOCK_TYPE_NUM - 1, 0)
/*
* Default init level where all blocks are expected to be initialized. This is
* the level of initialization expected by default and also after a full reset
* of the device.
*/
struct amdgpu_init_level amdgpu_init_default = {
.level = AMDGPU_INIT_LEVEL_DEFAULT,
.hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL,
};
struct amdgpu_init_level amdgpu_init_recovery = {
.level = AMDGPU_INIT_LEVEL_RESET_RECOVERY,
.hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL,
};
/*
* Minimal blocks needed to be initialized before a XGMI hive can be reset. This
* is used for cases like reset on initialization where the entire hive needs to
* be reset before first use.
*/
struct amdgpu_init_level amdgpu_init_minimal_xgmi = {
.level = AMDGPU_INIT_LEVEL_MINIMAL_XGMI,
.hwini_ip_block_mask =
BIT(AMD_IP_BLOCK_TYPE_GMC) | BIT(AMD_IP_BLOCK_TYPE_SMC) |
BIT(AMD_IP_BLOCK_TYPE_COMMON) | BIT(AMD_IP_BLOCK_TYPE_IH) |
BIT(AMD_IP_BLOCK_TYPE_PSP)
};
static inline bool amdgpu_ip_member_of_hwini(
struct amdgpu_device *adev,
enum amd_ip_block_type block)
{
return (adev->init_lvl->hwini_ip_block_mask & (1U << block)) != 0;
}
void amdgpu_set_init_level(
struct amdgpu_device *adev,
enum amdgpu_init_lvl_id lvl)
{
switch (lvl) {
case AMDGPU_INIT_LEVEL_MINIMAL_XGMI:
adev->init_lvl = &amdgpu_init_minimal_xgmi;
break;
case AMDGPU_INIT_LEVEL_RESET_RECOVERY:
adev->init_lvl = &amdgpu_init_recovery;
break;
case AMDGPU_INIT_LEVEL_DEFAULT:
fallthrough;
default:
adev->init_lvl = &amdgpu_init_default;
break;
}
}
static inline void amdgpu_device_stop_pending_resets(
struct amdgpu_device *adev);
static int amdgpu_device_pm_notifier(
struct notifier_block *nb,
unsigned long mode,
void *data);
/**
* DOC: pcie_replay_count
*
* The amdgpu driver provides a sysfs API for reporting the total number
* of PCIe replays (NAKs).
* The file pcie_replay_count is used for this and returns the total
* number of replays as a sum of the NAKs generated and NAKs received.
*/
static ssize_t amdgpu_device_get_pcie_replay_count(
struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
uint64_t cnt = amdgpu_asic_get_pcie_replay_count(adev);
return sysfs_emit(buf,
"%llu\n", cnt);
}
static DEVICE_ATTR(pcie_replay_count, 0444,
amdgpu_device_get_pcie_replay_count, NULL);
static int amdgpu_device_attr_sysfs_init(
struct amdgpu_device *adev)
{
int ret = 0;
if (amdgpu_nbio_is_replay_cnt_supported(adev))
ret = sysfs_create_file(&adev->dev->kobj,
&dev_attr_pcie_replay_count.attr);
return ret;
}
static void amdgpu_device_attr_sysfs_fini(
struct amdgpu_device *adev)
{
if (amdgpu_nbio_is_replay_cnt_supported(adev))
sysfs_remove_file(&adev->dev->kobj,
&dev_attr_pcie_replay_count.attr);
}
static ssize_t amdgpu_sysfs_reg_state_get(
struct file *f,
struct kobject *kobj,
const struct bin_attribute *attr,
char *buf,
loff_t ppos, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
ssize_t bytes_read;
switch (ppos) {
case AMDGPU_SYS_REG_STATE_XGMI:
bytes_read = amdgpu_asic_get_reg_state(
adev, AMDGPU_REG_STATE_TYPE_XGMI, buf, count);
break;
case AMDGPU_SYS_REG_STATE_WAFL:
bytes_read = amdgpu_asic_get_reg_state(
adev, AMDGPU_REG_STATE_TYPE_WAFL, buf, count);
break;
case AMDGPU_SYS_REG_STATE_PCIE:
bytes_read = amdgpu_asic_get_reg_state(
adev, AMDGPU_REG_STATE_TYPE_PCIE, buf, count);
break;
case AMDGPU_SYS_REG_STATE_USR:
bytes_read = amdgpu_asic_get_reg_state(
adev, AMDGPU_REG_STATE_TYPE_USR, buf, count);
break;
case AMDGPU_SYS_REG_STATE_USR_1:
bytes_read = amdgpu_asic_get_reg_state(
adev, AMDGPU_REG_STATE_TYPE_USR_1, buf, count);
break;
default:
return -EINVAL;
}
return bytes_read;
}
static const BIN_ATTR(reg_state, 0444, amdgpu_sysfs_reg_state_get, NULL,
AMDGPU_SYS_REG_STATE_END);
int amdgpu_reg_state_sysfs_init(
struct amdgpu_device *adev)
{
int ret;
if (!amdgpu_asic_get_reg_state_supported(adev))
return 0;
ret = sysfs_create_bin_file(&adev->dev->kobj, &bin_attr_reg_state);
return ret;
}
void amdgpu_reg_state_sysfs_fini(
struct amdgpu_device *adev)
{
if (!amdgpu_asic_get_reg_state_supported(adev))
return;
sysfs_remove_bin_file(&adev->dev->kobj, &bin_attr_reg_state);
}
int amdgpu_ip_block_suspend(
struct amdgpu_ip_block *ip_block)
{
int r;
if (ip_block->version->funcs->suspend) {
r = ip_block->version->funcs->suspend(ip_block);
if (r) {
dev_err(ip_block->adev->dev,
"suspend of IP block <%s> failed %d\n",
ip_block->version->funcs->name, r);
return r;
}
}
ip_block->status.hw =
false;
return 0;
}
int amdgpu_ip_block_resume(
struct amdgpu_ip_block *ip_block)
{
int r;
if (ip_block->version->funcs->resume) {
r = ip_block->version->funcs->resume(ip_block);
if (r) {
dev_err(ip_block->adev->dev,
"resume of IP block <%s> failed %d\n",
ip_block->version->funcs->name, r);
return r;
}
}
ip_block->status.hw =
true;
return 0;
}
/**
* DOC: board_info
*
* The amdgpu driver provides a sysfs API for giving board related information.
* It provides the form factor information in the format
*
* type : form factor
*
* Possible form factor values
*
* - "cem" - PCIE CEM card
* - "oam" - Open Compute Accelerator Module
* - "unknown" - Not known
*
*/
static ssize_t amdgpu_device_get_board_info(
struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
enum amdgpu_pkg_type pkg_type = AMDGPU_PKG_TYPE_CEM;
const char *pkg;
if (adev->smuio.funcs && adev->smuio.funcs->get_pkg_type)
pkg_type = adev->smuio.funcs->get_pkg_type(adev);
switch (pkg_type) {
case AMDGPU_PKG_TYPE_CEM:
pkg =
"cem";
break;
case AMDGPU_PKG_TYPE_OAM:
pkg =
"oam";
break;
default:
pkg =
"unknown";
break;
}
return sysfs_emit(buf,
"%s : %s\n",
"type", pkg);
}
static DEVICE_ATTR(board_info, 0444, amdgpu_device_get_board_info, NULL);
static struct attribute *amdgpu_board_attrs[] = {
&dev_attr_board_info.attr,
NULL,
};
static umode_t amdgpu_board_attrs_is_visible(
struct kobject *kobj,
struct attribute *attr,
int n)
{
struct device *dev = kobj_to_dev(kobj);
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
if (adev->flags & AMD_IS_APU)
return 0;
return attr->mode;
}
static const struct attribute_group amdgpu_board_attrs_group = {
.attrs = amdgpu_board_attrs,
.is_visible = amdgpu_board_attrs_is_visible
};
static void amdgpu_device_get_pcie_info(
struct amdgpu_device *adev);
/**
* amdgpu_device_supports_px - Is the device a dGPU with ATPX power control
*
* @adev: amdgpu device pointer
*
* Returns true if the device is a dGPU with ATPX power control,
* otherwise return false.
*/
bool amdgpu_device_supports_px(
struct amdgpu_device *adev)
{
if ((adev->flags & AMD_IS_PX) && !amdgpu_is_atpx_hybrid())
return true;
return false;
}
/**
* amdgpu_device_supports_boco - Is the device a dGPU with ACPI power resources
*
* @adev: amdgpu device pointer
*
* Returns true if the device is a dGPU with ACPI power control,
* otherwise return false.
*/
bool amdgpu_device_supports_boco(
struct amdgpu_device *adev)
{
if (!IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE))
return false;
if (adev->has_pr3 ||
((adev->flags & AMD_IS_PX) && amdgpu_is_atpx_hybrid()))
return true;
return false;
}
/**
* amdgpu_device_supports_baco - Does the device support BACO
*
* @adev: amdgpu device pointer
*
* Return:
* 1 if the device supports BACO;
* 3 if the device supports MACO (only works if BACO is supported)
* otherwise return 0.
*/
int amdgpu_device_supports_baco(
struct amdgpu_device *adev)
{
return amdgpu_asic_supports_baco(adev);
}
void amdgpu_device_detect_runtime_pm_mode(
struct amdgpu_device *adev)
{
int bamaco_support;
adev->pm.rpm_mode = AMDGPU_RUNPM_NONE;
bamaco_support = amdgpu_device_supports_baco(adev);
switch (amdgpu_runtime_pm) {
case 2:
if (bamaco_support & MACO_SUPPORT) {
adev->pm.rpm_mode = AMDGPU_RUNPM_BAMACO;
dev_info(adev->dev,
"Forcing BAMACO for runtime pm\n");
}
else if (bamaco_support == BACO_SUPPORT) {
adev->pm.rpm_mode = AMDGPU_RUNPM_BACO;
dev_info(adev->dev,
"Requested mode BAMACO not available,fallback to use BACO\n");
}
break;
case 1:
if (bamaco_support & BACO_SUPPORT) {
adev->pm.rpm_mode = AMDGPU_RUNPM_BACO;
dev_info(adev->dev,
"Forcing BACO for runtime pm\n");
}
break;
case -1:
case -2:
if (amdgpu_device_supports_px(adev)) {
/* enable PX as runtime mode */
adev->pm.rpm_mode = AMDGPU_RUNPM_PX;
dev_info(adev->dev,
"Using ATPX for runtime pm\n");
}
else if (amdgpu_device_supports_boco(adev)) {
/* enable boco as runtime mode */
adev->pm.rpm_mode = AMDGPU_RUNPM_BOCO;
dev_info(adev->dev,
"Using BOCO for runtime pm\n");
}
else {
if (!bamaco_support)
goto no_runtime_pm;
switch (adev->asic_type) {
case CHIP_VEGA20:
case CHIP_ARCTURUS:
/* BACO are not supported on vega20 and arctrus */
break;
case CHIP_VEGA10:
/* enable BACO as runpm mode if noretry=0 */
if (!adev->gmc.noretry && !amdgpu_passthrough(adev))
adev->pm.rpm_mode = AMDGPU_RUNPM_BACO;
break;
default:
/* enable BACO as runpm mode on CI+ */
if (!amdgpu_passthrough(adev))
adev->pm.rpm_mode = AMDGPU_RUNPM_BACO;
break;
}
if (adev->pm.rpm_mode == AMDGPU_RUNPM_BACO) {
if (bamaco_support & MACO_SUPPORT) {
adev->pm.rpm_mode = AMDGPU_RUNPM_BAMACO;
dev_info(adev->dev,
"Using BAMACO for runtime pm\n");
}
else {
dev_info(adev->dev,
"Using BACO for runtime pm\n");
}
}
}
break;
case 0:
dev_info(adev->dev,
"runtime pm is manually disabled\n");
break;
default:
break;
}
no_runtime_pm:
if (adev->pm.rpm_mode == AMDGPU_RUNPM_NONE)
dev_info(adev->dev,
"Runtime PM not available\n");
}
/**
* amdgpu_device_supports_smart_shift - Is the device dGPU with
* smart shift support
*
* @adev: amdgpu device pointer
*
* Returns true if the device is a dGPU with Smart Shift support,
* otherwise returns false.
*/
bool amdgpu_device_supports_smart_shift(
struct amdgpu_device *adev)
{
return (amdgpu_device_supports_boco(adev) &&
amdgpu_acpi_is_power_shift_control_supported());
}
/*
* VRAM access helper functions
*/
/**
* amdgpu_device_mm_access - access vram by MM_INDEX/MM_DATA
*
* @adev: amdgpu_device pointer
* @pos: offset of the buffer in vram
* @buf: virtual address of the buffer in system memory
* @size: read/write size, sizeof(@buf) must > @size
* @write: true - write to vram, otherwise - read from vram
*/
void amdgpu_device_mm_access(
struct amdgpu_device *adev, loff_t pos,
void *buf, size_t size,
bool write)
{
unsigned long flags;
uint32_t hi = ~0, tmp = 0;
uint32_t *data = buf;
uint64_t last;
int idx;
if (!drm_dev_enter(adev_to_drm(adev), &idx))
return;
BUG_ON(!IS_ALIGNED(pos, 4) || !IS_ALIGNED(size, 4));
spin_lock_irqsave(&adev->mmio_idx_lock, flags);
for (last = pos + size; pos < last; pos += 4) {
tmp = pos >> 31;
WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)pos) | 0x80000000);
if (tmp != hi) {
WREG32_NO_KIQ(mmMM_INDEX_HI, tmp);
hi = tmp;
}
if (write)
WREG32_NO_KIQ(mmMM_DATA, *data++);
else
*data++ = RREG32_NO_KIQ(mmMM_DATA);
}
spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
drm_dev_exit(idx);
}
/**
* amdgpu_device_aper_access - access vram by vram aperture
*
* @adev: amdgpu_device pointer
* @pos: offset of the buffer in vram
* @buf: virtual address of the buffer in system memory
* @size: read/write size, sizeof(@buf) must > @size
* @write: true - write to vram, otherwise - read from vram
*
* The return value means how many bytes have been transferred.
*/
size_t amdgpu_device_aper_access(
struct amdgpu_device *adev, loff_t pos,
void *buf, size_t size,
bool write)
{
#ifdef CONFIG_64BIT
void __iomem *addr;
size_t count = 0;
uint64_t last;
if (!adev->mman.aper_base_kaddr)
return 0;
last = min(pos + size, adev->gmc.visible_vram_size);
if (last > pos) {
addr = adev->mman.aper_base_kaddr + pos;
count = last - pos;
if (write) {
memcpy_toio(addr, buf, count);
/* Make sure HDP write cache flush happens without any reordering
* after the system memory contents are sent over PCIe device
*/
mb();
amdgpu_device_flush_hdp(adev, NULL);
}
else {
amdgpu_device_invalidate_hdp(adev, NULL);
/* Make sure HDP read cache is invalidated before issuing a read
* to the PCIe device
*/
mb();
memcpy_fromio(buf, addr, count);
}
}
return count;
#else
return 0;
#endif
}
/**
* amdgpu_device_vram_access - read/write a buffer in vram
*
* @adev: amdgpu_device pointer
* @pos: offset of the buffer in vram
* @buf: virtual address of the buffer in system memory
* @size: read/write size, sizeof(@buf) must > @size
* @write: true - write to vram, otherwise - read from vram
*/
void amdgpu_device_vram_access(
struct amdgpu_device *adev, loff_t pos,
void *buf, size_t size,
bool write)
{
size_t count;
/* try to using vram apreature to access vram first */
count = amdgpu_device_aper_access(adev, pos, buf, size, write);
size -= count;
if (size) {
/* using MM to access rest vram */
pos += count;
buf += count;
amdgpu_device_mm_access(adev, pos, buf, size, write);
}
}
/*
* register access helper functions.
*/
/* Check if hw access should be skipped because of hotplug or device error */
bool amdgpu_device_skip_hw_access(
struct amdgpu_device *adev)
{
if (adev->no_hw_access)
return true;
#ifdef CONFIG_LOCKDEP
/*
* This is a bit complicated to understand, so worth a comment. What we assert
* here is that the GPU reset is not running on another thread in parallel.
*
* For this we trylock the read side of the reset semaphore, if that succeeds
* we know that the reset is not running in parallel.
*
* If the trylock fails we assert that we are either already holding the read
* side of the lock or are the reset thread itself and hold the write side of
* the lock.
*/
if (in_task()) {
if (down_read_trylock(&adev->reset_domain->sem))
up_read(&adev->reset_domain->sem);
else
lockdep_assert_held(&adev->reset_domain->sem);
}
#endif
return false;
}
/**
* amdgpu_device_rreg - read a memory mapped IO or indirect register
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
* @acc_flags: access flags which require special behavior
*
* Returns the 32 bit value from the offset specified.
*/
uint32_t amdgpu_device_rreg(
struct amdgpu_device *adev,
uint32_t reg, uint32_t acc_flags)
{
uint32_t ret;
if (amdgpu_device_skip_hw_access(adev))
return 0;
if ((reg * 4) < adev->rmmio_size) {
if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
amdgpu_sriov_runtime(adev) &&
down_read_trylock(&adev->reset_domain->sem)) {
ret = amdgpu_kiq_rreg(adev, reg, 0);
up_read(&adev->reset_domain->sem);
}
else {
ret = readl(((
void __iomem *)adev->rmmio) + (reg * 4));
}
}
else {
ret = adev->pcie_rreg(adev, reg * 4);
}
trace_amdgpu_device_rreg(adev->pdev->device, reg, ret);
return ret;
}
/*
* MMIO register read with bytes helper functions
* @offset:bytes offset from MMIO start
*/
/**
* amdgpu_mm_rreg8 - read a memory mapped IO register
*
* @adev: amdgpu_device pointer
* @offset: byte aligned register offset
*
* Returns the 8 bit value from the offset specified.
*/
uint8_t amdgpu_mm_rreg8(
struct amdgpu_device *adev, uint32_t offset)
{
if (amdgpu_device_skip_hw_access(adev))
return 0;
if (offset < adev->rmmio_size)
return (readb(adev->rmmio + offset));
BUG();
}
/**
* amdgpu_device_xcc_rreg - read a memory mapped IO or indirect register with specific XCC
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
* @acc_flags: access flags which require special behavior
* @xcc_id: xcc accelerated compute core id
*
* Returns the 32 bit value from the offset specified.
*/
uint32_t amdgpu_device_xcc_rreg(
struct amdgpu_device *adev,
uint32_t reg, uint32_t acc_flags,
uint32_t xcc_id)
{
uint32_t ret, rlcg_flag;
if (amdgpu_device_skip_hw_access(adev))
return 0;
if ((reg * 4) < adev->rmmio_size) {
if (amdgpu_sriov_vf(adev) &&
!amdgpu_sriov_runtime(adev) &&
adev->gfx.rlc.rlcg_reg_access_supported &&
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags,
GC_HWIP,
false,
&rlcg_flag)) {
ret = amdgpu_virt_rlcg_reg_rw(adev, reg, 0, rlcg_flag, GET_INST(GC, xcc_id));
}
else if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
amdgpu_sriov_runtime(adev) &&
down_read_trylock(&adev->reset_domain->sem)) {
ret = amdgpu_kiq_rreg(adev, reg, xcc_id);
up_read(&adev->reset_domain->sem);
}
else {
ret = readl(((
void __iomem *)adev->rmmio) + (reg * 4));
}
}
else {
ret = adev->pcie_rreg(adev, reg * 4);
}
return ret;
}
/*
* MMIO register write with bytes helper functions
* @offset:bytes offset from MMIO start
* @value: the value want to be written to the register
*/
/**
* amdgpu_mm_wreg8 - read a memory mapped IO register
*
* @adev: amdgpu_device pointer
* @offset: byte aligned register offset
* @value: 8 bit value to write
*
* Writes the value specified to the offset specified.
*/
void amdgpu_mm_wreg8(
struct amdgpu_device *adev, uint32_t offset, uint8_t value)
{
if (amdgpu_device_skip_hw_access(adev))
return;
if (offset < adev->rmmio_size)
writeb(value, adev->rmmio + offset);
else
BUG();
}
/**
* amdgpu_device_wreg - write to a memory mapped IO or indirect register
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
* @v: 32 bit value to write to the register
* @acc_flags: access flags which require special behavior
*
* Writes the value specified to the offset specified.
*/
void amdgpu_device_wreg(
struct amdgpu_device *adev,
uint32_t reg, uint32_t v,
uint32_t acc_flags)
{
if (amdgpu_device_skip_hw_access(adev))
return;
if ((reg * 4) < adev->rmmio_size) {
if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
amdgpu_sriov_runtime(adev) &&
down_read_trylock(&adev->reset_domain->sem)) {
amdgpu_kiq_wreg(adev, reg, v, 0);
up_read(&adev->reset_domain->sem);
}
else {
writel(v, ((
void __iomem *)adev->rmmio) + (reg * 4));
}
}
else {
adev->pcie_wreg(adev, reg * 4, v);
}
trace_amdgpu_device_wreg(adev->pdev->device, reg, v);
}
/**
* amdgpu_mm_wreg_mmio_rlc - write register either with direct/indirect mmio or with RLC path if in range
*
* @adev: amdgpu_device pointer
* @reg: mmio/rlc register
* @v: value to write
* @xcc_id: xcc accelerated compute core id
*
* this function is invoked only for the debugfs register access
*/
void amdgpu_mm_wreg_mmio_rlc(
struct amdgpu_device *adev,
uint32_t reg, uint32_t v,
uint32_t xcc_id)
{
if (amdgpu_device_skip_hw_access(adev))
return;
if (amdgpu_sriov_fullaccess(adev) &&
adev->gfx.rlc.funcs &&
adev->gfx.rlc.funcs->is_rlcg_access_range) {
if (adev->gfx.rlc.funcs->is_rlcg_access_range(adev, reg))
return amdgpu_sriov_wreg(adev, reg, v, 0, 0, xcc_id);
}
else if ((reg * 4) >= adev->rmmio_size) {
adev->pcie_wreg(adev, reg * 4, v);
}
else {
writel(v, ((
void __iomem *)adev->rmmio) + (reg * 4));
}
}
/**
* amdgpu_device_xcc_wreg - write to a memory mapped IO or indirect register with specific XCC
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
* @v: 32 bit value to write to the register
* @acc_flags: access flags which require special behavior
* @xcc_id: xcc accelerated compute core id
*
* Writes the value specified to the offset specified.
*/
void amdgpu_device_xcc_wreg(
struct amdgpu_device *adev,
uint32_t reg, uint32_t v,
uint32_t acc_flags, uint32_t xcc_id)
{
uint32_t rlcg_flag;
if (amdgpu_device_skip_hw_access(adev))
return;
if ((reg * 4) < adev->rmmio_size) {
if (amdgpu_sriov_vf(adev) &&
!amdgpu_sriov_runtime(adev) &&
adev->gfx.rlc.rlcg_reg_access_supported &&
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags,
GC_HWIP,
true,
&rlcg_flag)) {
amdgpu_virt_rlcg_reg_rw(adev, reg, v, rlcg_flag, GET_INST(GC, xcc_id));
}
else if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
amdgpu_sriov_runtime(adev) &&
down_read_trylock(&adev->reset_domain->sem)) {
amdgpu_kiq_wreg(adev, reg, v, xcc_id);
up_read(&adev->reset_domain->sem);
}
else {
writel(v, ((
void __iomem *)adev->rmmio) + (reg * 4));
}
}
else {
adev->pcie_wreg(adev, reg * 4, v);
}
}
/**
* amdgpu_device_indirect_rreg - read an indirect register
*
* @adev: amdgpu_device pointer
* @reg_addr: indirect register address to read from
*
* Returns the value of indirect register @reg_addr
*/
u32 amdgpu_device_indirect_rreg(
struct amdgpu_device *adev,
u32 reg_addr)
{
unsigned long flags, pcie_index, pcie_data;
void __iomem *pcie_index_offset;
void __iomem *pcie_data_offset;
u32 r;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
r = readl(pcie_data_offset);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
return r;
}
u32 amdgpu_device_indirect_rreg_ext(
struct amdgpu_device *adev,
u64 reg_addr)
{
unsigned long flags, pcie_index, pcie_index_hi, pcie_data;
u32 r;
void __iomem *pcie_index_offset;
void __iomem *pcie_index_hi_offset;
void __iomem *pcie_data_offset;
if (unlikely(!adev->nbio.funcs)) {
pcie_index = AMDGPU_PCIE_INDEX_FALLBACK;
pcie_data = AMDGPU_PCIE_DATA_FALLBACK;
}
else {
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
}
if (reg_addr >> 32) {
if (unlikely(!adev->nbio.funcs))
pcie_index_hi = AMDGPU_PCIE_INDEX_HI_FALLBACK;
else
pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev);
}
else {
pcie_index_hi = 0;
}
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
if (pcie_index_hi != 0)
pcie_index_hi_offset = (
void __iomem *)adev->rmmio +
pcie_index_hi * 4;
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
r = readl(pcie_data_offset);
/* clear the high bits */
if (pcie_index_hi != 0) {
writel(0, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
return r;
}
/**
* amdgpu_device_indirect_rreg64 - read a 64bits indirect register
*
* @adev: amdgpu_device pointer
* @reg_addr: indirect register address to read from
*
* Returns the value of indirect register @reg_addr
*/
u64 amdgpu_device_indirect_rreg64(
struct amdgpu_device *adev,
u32 reg_addr)
{
unsigned long flags, pcie_index, pcie_data;
void __iomem *pcie_index_offset;
void __iomem *pcie_data_offset;
u64 r;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
/* read low 32 bits */
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
r = readl(pcie_data_offset);
/* read high 32 bits */
writel(reg_addr + 4, pcie_index_offset);
readl(pcie_index_offset);
r |= ((u64)readl(pcie_data_offset) << 32);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
return r;
}
u64 amdgpu_device_indirect_rreg64_ext(
struct amdgpu_device *adev,
u64 reg_addr)
{
unsigned long flags, pcie_index, pcie_data;
unsigned long pcie_index_hi = 0;
void __iomem *pcie_index_offset;
void __iomem *pcie_index_hi_offset;
void __iomem *pcie_data_offset;
u64 r;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset))
pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
if (pcie_index_hi != 0)
pcie_index_hi_offset = (
void __iomem *)adev->rmmio +
pcie_index_hi * 4;
/* read low 32 bits */
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
r = readl(pcie_data_offset);
/* read high 32 bits */
writel(reg_addr + 4, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
r |= ((u64)readl(pcie_data_offset) << 32);
/* clear the high bits */
if (pcie_index_hi != 0) {
writel(0, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
return r;
}
/**
* amdgpu_device_indirect_wreg - write an indirect register address
*
* @adev: amdgpu_device pointer
* @reg_addr: indirect register offset
* @reg_data: indirect register data
*
*/
void amdgpu_device_indirect_wreg(
struct amdgpu_device *adev,
u32 reg_addr, u32 reg_data)
{
unsigned long flags, pcie_index, pcie_data;
void __iomem *pcie_index_offset;
void __iomem *pcie_data_offset;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
writel(reg_data, pcie_data_offset);
readl(pcie_data_offset);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
void amdgpu_device_indirect_wreg_ext(
struct amdgpu_device *adev,
u64 reg_addr, u32 reg_data)
{
unsigned long flags, pcie_index, pcie_index_hi, pcie_data;
void __iomem *pcie_index_offset;
void __iomem *pcie_index_hi_offset;
void __iomem *pcie_data_offset;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset))
pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev);
else
pcie_index_hi = 0;
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
if (pcie_index_hi != 0)
pcie_index_hi_offset = (
void __iomem *)adev->rmmio +
pcie_index_hi * 4;
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
writel(reg_data, pcie_data_offset);
readl(pcie_data_offset);
/* clear the high bits */
if (pcie_index_hi != 0) {
writel(0, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
/**
* amdgpu_device_indirect_wreg64 - write a 64bits indirect register address
*
* @adev: amdgpu_device pointer
* @reg_addr: indirect register offset
* @reg_data: indirect register data
*
*/
void amdgpu_device_indirect_wreg64(
struct amdgpu_device *adev,
u32 reg_addr, u64 reg_data)
{
unsigned long flags, pcie_index, pcie_data;
void __iomem *pcie_index_offset;
void __iomem *pcie_data_offset;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
/* write low 32 bits */
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
writel((u32)(reg_data & 0xffffffffULL), pcie_data_offset);
readl(pcie_data_offset);
/* write high 32 bits */
writel(reg_addr + 4, pcie_index_offset);
readl(pcie_index_offset);
writel((u32)(reg_data >> 32), pcie_data_offset);
readl(pcie_data_offset);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
void amdgpu_device_indirect_wreg64_ext(
struct amdgpu_device *adev,
u64 reg_addr, u64 reg_data)
{
unsigned long flags, pcie_index, pcie_data;
unsigned long pcie_index_hi = 0;
void __iomem *pcie_index_offset;
void __iomem *pcie_index_hi_offset;
void __iomem *pcie_data_offset;
pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset))
pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
pcie_index_offset = (
void __iomem *)adev->rmmio + pcie_index * 4;
pcie_data_offset = (
void __iomem *)adev->rmmio + pcie_data * 4;
if (pcie_index_hi != 0)
pcie_index_hi_offset = (
void __iomem *)adev->rmmio +
pcie_index_hi * 4;
/* write low 32 bits */
writel(reg_addr, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
writel((u32)(reg_data & 0xffffffffULL), pcie_data_offset);
readl(pcie_data_offset);
/* write high 32 bits */
writel(reg_addr + 4, pcie_index_offset);
readl(pcie_index_offset);
if (pcie_index_hi != 0) {
writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
writel((u32)(reg_data >> 32), pcie_data_offset);
readl(pcie_data_offset);
/* clear the high bits */
if (pcie_index_hi != 0) {
writel(0, pcie_index_hi_offset);
readl(pcie_index_hi_offset);
}
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
/**
* amdgpu_device_get_rev_id - query device rev_id
*
* @adev: amdgpu_device pointer
*
* Return device rev_id
*/
u32 amdgpu_device_get_rev_id(
struct amdgpu_device *adev)
{
return adev->nbio.funcs->get_rev_id(adev);
}
/**
* amdgpu_invalid_rreg - dummy reg read function
*
* @adev: amdgpu_device pointer
* @reg: offset of register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
* Returns the value in the register.
*/
static uint32_t amdgpu_invalid_rreg(
struct amdgpu_device *adev, uint32_t reg)
{
dev_err(adev->dev,
"Invalid callback to read register 0x%04X\n", reg);
BUG();
return 0;
}
static uint32_t amdgpu_invalid_rreg_ext(
struct amdgpu_device *adev, uint64_t reg)
{
dev_err(adev->dev,
"Invalid callback to read register 0x%llX\n", reg);
BUG();
return 0;
}
/**
* amdgpu_invalid_wreg - dummy reg write function
*
* @adev: amdgpu_device pointer
* @reg: offset of register
* @v: value to write to the register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
*/
static void amdgpu_invalid_wreg(
struct amdgpu_device *adev, uint32_t reg, uint32_t v)
{
dev_err(adev->dev,
"Invalid callback to write register 0x%04X with 0x%08X\n", reg,
v);
BUG();
}
static void amdgpu_invalid_wreg_ext(
struct amdgpu_device *adev, uint64_t reg, uint32_t v
)
{
dev_err(adev->dev,
"Invalid callback to write register 0x%llX with 0x%08X\n", reg,
v);
BUG();
}
/**
* amdgpu_invalid_rreg64 - dummy 64 bit reg read function
*
* @adev: amdgpu_device pointer
* @reg: offset of register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
* Returns the value in the register.
*/
static uint64_t amdgpu_invalid_rreg64(struct amdgpu_device *adev, uint32_t reg)
{
dev_err(adev->dev, "Invalid callback to read 64 bit register 0x%04X\n",
reg);
BUG();
return 0;
}
static uint64_t amdgpu_invalid_rreg64_ext(struct amdgpu_device *adev, uint64_t reg)
{
dev_err(adev->dev, "Invalid callback to read register 0x%llX\n", reg);
BUG();
return 0;
}
/**
* amdgpu_invalid_wreg64 - dummy reg write function
*
* @adev: amdgpu_device pointer
* @reg: offset of register
* @v: value to write to the register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
*/
static void amdgpu_invalid_wreg64(struct amdgpu_device *adev, uint32_t reg, uint64_t v)
{
dev_err(adev->dev,
"Invalid callback to write 64 bit register 0x%04X with 0x%08llX\n",
reg, v);
BUG();
}
static void amdgpu_invalid_wreg64_ext(struct amdgpu_device *adev, uint64_t reg, uint64_t v)
{
dev_err(adev->dev,
"Invalid callback to write 64 bit register 0x%llX with 0x%08llX\n",
reg, v);
BUG();
}
/**
* amdgpu_block_invalid_rreg - dummy reg read function
*
* @adev: amdgpu_device pointer
* @block: offset of instance
* @reg: offset of register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
* Returns the value in the register.
*/
static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev,
uint32_t block, uint32_t reg)
{
dev_err(adev->dev,
"Invalid callback to read register 0x%04X in block 0x%04X\n",
reg, block);
BUG();
return 0;
}
/**
* amdgpu_block_invalid_wreg - dummy reg write function
*
* @adev: amdgpu_device pointer
* @block: offset of instance
* @reg: offset of register
* @v: value to write to the register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
*/
static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev,
uint32_t block,
uint32_t reg, uint32_t v)
{
dev_err(adev->dev,
"Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n",
reg, block, v);
BUG();
}
static uint32_t amdgpu_device_get_vbios_flags(struct amdgpu_device *adev)
{
if (hweight32(adev->aid_mask) && (adev->flags & AMD_IS_APU))
return AMDGPU_VBIOS_SKIP;
if (hweight32(adev->aid_mask) && amdgpu_passthrough(adev))
return AMDGPU_VBIOS_OPTIONAL;
return 0;
}
/**
* amdgpu_device_asic_init - Wrapper for atom asic_init
*
* @adev: amdgpu_device pointer
*
* Does any asic specific work and then calls atom asic init.
*/
static int amdgpu_device_asic_init(struct amdgpu_device *adev)
{
uint32_t flags;
bool optional;
int ret;
amdgpu_asic_pre_asic_init(adev);
flags = amdgpu_device_get_vbios_flags(adev);
optional = !!(flags & (AMDGPU_VBIOS_OPTIONAL | AMDGPU_VBIOS_SKIP));
if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) ||
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4) ||
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0) ||
amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(11, 0, 0)) {
amdgpu_psp_wait_for_bootloader(adev);
if (optional && !adev->bios)
return 0;
ret = amdgpu_atomfirmware_asic_init(adev, true);
return ret;
} else {
if (optional && !adev->bios)
return 0;
return amdgpu_atom_asic_init(adev->mode_info.atom_context);
}
return 0;
}
/**
* amdgpu_device_mem_scratch_init - allocate the VRAM scratch page
*
* @adev: amdgpu_device pointer
*
* Allocates a scratch page of VRAM for use by various things in the
* driver.
*/
static int amdgpu_device_mem_scratch_init(struct amdgpu_device *adev)
{
return amdgpu_bo_create_kernel(adev, AMDGPU_GPU_PAGE_SIZE, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM |
AMDGPU_GEM_DOMAIN_GTT,
&adev->mem_scratch.robj,
&adev->mem_scratch.gpu_addr,
(void **)&adev->mem_scratch.ptr);
}
/**
* amdgpu_device_mem_scratch_fini - Free the VRAM scratch page
*
* @adev: amdgpu_device pointer
*
* Frees the VRAM scratch page.
*/
static void amdgpu_device_mem_scratch_fini(struct amdgpu_device *adev)
{
amdgpu_bo_free_kernel(&adev->mem_scratch.robj, NULL, NULL);
}
/**
* amdgpu_device_program_register_sequence - program an array of registers.
*
* @adev: amdgpu_device pointer
* @registers: pointer to the register array
* @array_size: size of the register array
*
* Programs an array or registers with and or masks.
* This is a helper for setting golden registers.
*/
void amdgpu_device_program_register_sequence(struct amdgpu_device *adev,
const u32 *registers,
const u32 array_size)
{
u32 tmp, reg, and_mask, or_mask;
int i;
if (array_size % 3)
return;
for (i = 0; i < array_size; i += 3) {
reg = registers[i + 0];
and_mask = registers[i + 1];
or_mask = registers[i + 2];
if (and_mask == 0xffffffff) {
tmp = or_mask;
} else {
tmp = RREG32(reg);
tmp &= ~and_mask;
if (adev->family >= AMDGPU_FAMILY_AI)
tmp |= (or_mask & and_mask);
else
tmp |= or_mask;
}
WREG32(reg, tmp);
}
}
/**
* amdgpu_device_pci_config_reset - reset the GPU
*
* @adev: amdgpu_device pointer
*
* Resets the GPU using the pci config reset sequence.
* Only applicable to asics prior to vega10.
*/
void amdgpu_device_pci_config_reset(struct amdgpu_device *adev)
{
pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
}
/**
* amdgpu_device_pci_reset - reset the GPU using generic PCI means
*
* @adev: amdgpu_device pointer
*
* Resets the GPU using generic pci reset interfaces (FLR, SBR, etc.).
*/
int amdgpu_device_pci_reset(struct amdgpu_device *adev)
{
return pci_reset_function(adev->pdev);
}
/*
* amdgpu_device_wb_*()
* Writeback is the method by which the GPU updates special pages in memory
* with the status of certain GPU events (fences, ring pointers,etc.).
*/
/**
* amdgpu_device_wb_fini - Disable Writeback and free memory
*
* @adev: amdgpu_device pointer
*
* Disables Writeback and frees the Writeback memory (all asics).
* Used at driver shutdown.
*/
static void amdgpu_device_wb_fini(struct amdgpu_device *adev)
{
if (adev->wb.wb_obj) {
amdgpu_bo_free_kernel(&adev->wb.wb_obj,
&adev->wb.gpu_addr,
(void **)&adev->wb.wb);
adev->wb.wb_obj = NULL;
}
}
/**
* amdgpu_device_wb_init - Init Writeback driver info and allocate memory
*
* @adev: amdgpu_device pointer
*
* Initializes writeback and allocates writeback memory (all asics).
* Used at driver startup.
* Returns 0 on success or an -error on failure.
*/
static int amdgpu_device_wb_init(struct amdgpu_device *adev)
{
int r;
if (adev->wb.wb_obj == NULL) {
/* AMDGPU_MAX_WB * sizeof(uint32_t) * 8 = AMDGPU_MAX_WB 256bit slots */
r = amdgpu_bo_create_kernel(adev, AMDGPU_MAX_WB * sizeof(uint32_t) * 8,
PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT,
&adev->wb.wb_obj, &adev->wb.gpu_addr,
(void **)&adev->wb.wb);
if (r) {
dev_warn(adev->dev, "(%d) create WB bo failed\n", r);
return r;
}
adev->wb.num_wb = AMDGPU_MAX_WB;
memset(&adev->wb.used, 0, sizeof(adev->wb.used));
/* clear wb memory */
memset((char *)adev->wb.wb, 0, AMDGPU_MAX_WB * sizeof(uint32_t) * 8);
}
return 0;
}
/**
* amdgpu_device_wb_get - Allocate a wb entry
*
* @adev: amdgpu_device pointer
* @wb: wb index
*
* Allocate a wb slot for use by the driver (all asics).
* Returns 0 on success or -EINVAL on failure.
*/
int amdgpu_device_wb_get(struct amdgpu_device *adev, u32 *wb)
{
unsigned long flags, offset;
spin_lock_irqsave(&adev->wb.lock, flags);
offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb);
if (offset < adev->wb.num_wb) {
__set_bit(offset, adev->wb.used);
spin_unlock_irqrestore(&adev->wb.lock, flags);
*wb = offset << 3; /* convert to dw offset */
return 0;
} else {
spin_unlock_irqrestore(&adev->wb.lock, flags);
return -EINVAL;
}
}
/**
* amdgpu_device_wb_free - Free a wb entry
*
* @adev: amdgpu_device pointer
* @wb: wb index
*
* Free a wb slot allocated for use by the driver (all asics)
*/
void amdgpu_device_wb_free(struct amdgpu_device *adev, u32 wb)
{
unsigned long flags;
wb >>= 3;
spin_lock_irqsave(&adev->wb.lock, flags);
if (wb < adev->wb.num_wb)
__clear_bit(wb, adev->wb.used);
spin_unlock_irqrestore(&adev->wb.lock, flags);
}
/**
* amdgpu_device_resize_fb_bar - try to resize FB BAR
*
* @adev: amdgpu_device pointer
*
* Try to resize FB BAR to make all VRAM CPU accessible. We try very hard not
* to fail, but if any of the BARs is not accessible after the size we abort
* driver loading by returning -ENODEV.
*/
int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
{
int rbar_size = pci_rebar_bytes_to_size(adev->gmc.real_vram_size);
struct pci_bus *root;
struct resource *res;
unsigned int i;
u16 cmd;
int r;
if (!IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
return 0;
/* Bypass for VF */
if (amdgpu_sriov_vf(adev))
return 0;
if (!amdgpu_rebar)
return 0;
/* resizing on Dell G5 SE platforms causes problems with runtime pm */
if ((amdgpu_runtime_pm != 0) &&
adev->pdev->vendor == PCI_VENDOR_ID_ATI &&
adev->pdev->device == 0x731f &&
adev->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL)
return 0;
/* PCI_EXT_CAP_ID_VNDR extended capability is located at 0x100 */
if (!pci_find_ext_capability(adev->pdev, PCI_EXT_CAP_ID_VNDR))
dev_warn(
adev->dev,
"System can't access extended configuration space, please check!!\n");
/* skip if the bios has already enabled large BAR */
if (adev->gmc.real_vram_size &&
(pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size))
return 0;
/* Check if the root BUS has 64bit memory resources */
root = adev->pdev->bus;
while (root->parent)
root = root->parent;
pci_bus_for_each_resource(root, res, i) {
if (res && res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) &&
res->start > 0x100000000ull)
break;
}
/* Trying to resize is pointless without a root hub window above 4GB */
if (!res)
return 0;
/* Limit the BAR size to what is available */
rbar_size = min(fls(pci_rebar_get_possible_sizes(adev->pdev, 0)) - 1,
rbar_size);
/* Disable memory decoding while we change the BAR addresses and size */
pci_read_config_word(adev->pdev, PCI_COMMAND, &cmd);
pci_write_config_word(adev->pdev, PCI_COMMAND,
cmd & ~PCI_COMMAND_MEMORY);
/* Free the VRAM and doorbell BAR, we most likely need to move both. */
amdgpu_doorbell_fini(adev);
if (adev->asic_type >= CHIP_BONAIRE)
pci_release_resource(adev->pdev, 2);
pci_release_resource(adev->pdev, 0);
r = pci_resize_resource(adev->pdev, 0, rbar_size);
if (r == -ENOSPC)
dev_info(adev->dev,
"Not enough PCI address space for a large BAR.");
else if (r && r != -ENOTSUPP)
dev_err(adev->dev, "Problem resizing BAR0 (%d).", r);
pci_assign_unassigned_bus_resources(adev->pdev->bus);
/* When the doorbell or fb BAR isn't available we have no chance of
* using the device.
*/
r = amdgpu_doorbell_init(adev);
if (r || (pci_resource_flags(adev->pdev, 0) & IORESOURCE_UNSET))
return -ENODEV;
pci_write_config_word(adev->pdev, PCI_COMMAND, cmd);
return 0;
}
/*
* GPU helpers function.
*/
/**
* amdgpu_device_need_post - check if the hw need post or not
*
* @adev: amdgpu_device pointer
*
* Check if the asic has been initialized (all asics) at driver startup
* or post is needed if hw reset is performed.
* Returns true if need or false if not.
*/
bool amdgpu_device_need_post(struct amdgpu_device *adev)
{
uint32_t reg, flags;
if (amdgpu_sriov_vf(adev))
return false;
flags = amdgpu_device_get_vbios_flags(adev);
if (flags & AMDGPU_VBIOS_SKIP)
return false;
if ((flags & AMDGPU_VBIOS_OPTIONAL) && !adev->bios)
return false;
if (amdgpu_passthrough(adev)) {
/* for FIJI: In whole GPU pass-through virtualization case, after VM reboot
* some old smc fw still need driver do vPost otherwise gpu hang, while
* those smc fw version above 22.15 doesn't have this flaw, so we force
* vpost executed for smc version below 22.15
*/
if (adev->asic_type == CHIP_FIJI) {
int err;
uint32_t fw_ver;
err = request_firmware(&adev->pm.fw, "amdgpu/fiji_smc.bin", adev->dev);
/* force vPost if error occurred */
if (err)
return true;
fw_ver = *((uint32_t *)adev->pm.fw->data + 69);
release_firmware(adev->pm.fw);
if (fw_ver < 0x00160e00)
return true;
}
}
/* Don't post if we need to reset whole hive on init */
if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI)
return false;
if (adev->has_hw_reset) {
adev->has_hw_reset = false;
return true;
}
/* bios scratch used on CIK+ */
if (adev->asic_type >= CHIP_BONAIRE)
return amdgpu_atombios_scratch_need_asic_init(adev);
/* check MEM_SIZE for older asics */
reg = amdgpu_asic_get_config_memsize(adev);
if ((reg != 0) && (reg != 0xffffffff))
return false;
return true;
}
/*
* Check whether seamless boot is supported.
*
* So far we only support seamless boot on DCE 3.0 or later.
* If users report that it works on older ASICS as well, we may
* loosen this.
*/
bool amdgpu_device_seamless_boot_supported(struct amdgpu_device *adev)
{
switch (amdgpu_seamless) {
case -1:
break;
case 1:
return true;
case 0:
return false;
default:
dev_err(adev->dev, "Invalid value for amdgpu.seamless: %d\n",
amdgpu_seamless);
return false;
}
if (!(adev->flags & AMD_IS_APU))
return false;
if (adev->mman.keep_stolen_vga_memory)
return false;
return amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0);
}
/*
* Intel hosts such as Rocket Lake, Alder Lake, Raptor Lake and Sapphire Rapids
* don't support dynamic speed switching. Until we have confirmation from Intel
* that a specific host supports it, it's safer that we keep it disabled for all.
*
* https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/005/pci-express-support/
* https://gitlab.freedesktop.org/drm/amd/-/issues/2663
*/
static bool amdgpu_device_pcie_dynamic_switching_supported(struct amdgpu_device *adev)
{
#if IS_ENABLED(CONFIG_X86)
struct cpuinfo_x86 *c = &cpu_data(0);
/* eGPU change speeds based on USB4 fabric conditions */
if (dev_is_removable(adev->dev))
return true;
if (c->x86_vendor == X86_VENDOR_INTEL)
return false;
#endif
return true;
}
static bool amdgpu_device_aspm_support_quirk(struct amdgpu_device *adev)
{
/* Enabling ASPM causes randoms hangs on Tahiti and Oland on Zen4.
* It's unclear if this is a platform-specific or GPU-specific issue.
* Disable ASPM on SI for the time being.
*/
if (adev->family == AMDGPU_FAMILY_SI)
return true;
#if IS_ENABLED(CONFIG_X86)
struct cpuinfo_x86 *c = &cpu_data(0);
if (!(amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 0) ||
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 1)))
return false;
if (c->x86 == 6 &&
adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5) {
switch (c->x86_model) {
case VFM_MODEL(INTEL_ALDERLAKE):
case VFM_MODEL(INTEL_ALDERLAKE_L):
case VFM_MODEL(INTEL_RAPTORLAKE):
case VFM_MODEL(INTEL_RAPTORLAKE_P):
case VFM_MODEL(INTEL_RAPTORLAKE_S):
return true;
default:
return false;
}
} else {
return false;
}
#else
return false;
#endif
}
/**
* amdgpu_device_should_use_aspm - check if the device should program ASPM
*
* @adev: amdgpu_device pointer
*
* Confirm whether the module parameter and pcie bridge agree that ASPM should
* be set for this device.
*
* Returns true if it should be used or false if not.
*/
bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
{
switch (amdgpu_aspm) {
case -1:
break;
case 0:
return false;
case 1:
return true;
default:
return false;
}
if (adev->flags & AMD_IS_APU)
return false;
if (amdgpu_device_aspm_support_quirk(adev))
return false;
return pcie_aspm_enabled(adev->pdev);
}
/* if we get transitioned to only one device, take VGA back */
/**
* amdgpu_device_vga_set_decode - enable/disable vga decode
*
* @pdev: PCI device pointer
* @state: enable/disable vga decode
*
* Enable/disable vga decode (all asics).
* Returns VGA resource flags.
*/
static unsigned int amdgpu_device_vga_set_decode(struct pci_dev *pdev,
bool state)
{
struct amdgpu_device *adev = drm_to_adev(pci_get_drvdata(pdev));
amdgpu_asic_set_vga_state(adev, state);
if (state)
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
else
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
/**
* amdgpu_device_check_block_size - validate the vm block size
*
* @adev: amdgpu_device pointer
*
* Validates the vm block size specified via module parameter.
* The vm block size defines number of bits in page table versus page directory,
* a page is 4KB so we have 12 bits offset, minimum 9 bits in the
* page table and the remaining bits are in the page directory.
*/
static void amdgpu_device_check_block_size(struct amdgpu_device *adev)
{
/* defines number of bits in page table versus page directory,
* a page is 4KB so we have 12 bits offset, minimum 9 bits in the
* page table and the remaining bits are in the page directory
*/
if (amdgpu_vm_block_size == -1)
return;
if (amdgpu_vm_block_size < 9) {
dev_warn(adev->dev, "VM page table size (%d) too small\n",
amdgpu_vm_block_size);
amdgpu_vm_block_size = -1;
}
}
/**
* amdgpu_device_check_vm_size - validate the vm size
*
* @adev: amdgpu_device pointer
*
* Validates the vm size in GB specified via module parameter.
* The VM size is the size of the GPU virtual memory space in GB.
*/
static void amdgpu_device_check_vm_size(struct amdgpu_device *adev)
{
/* no need to check the default value */
if (amdgpu_vm_size == -1)
return;
if (amdgpu_vm_size < 1) {
dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
amdgpu_vm_size);
amdgpu_vm_size = -1;
}
}
static void amdgpu_device_check_smu_prv_buffer_size(struct amdgpu_device *adev)
{
struct sysinfo si;
bool is_os_64 = (sizeof(void *) == 8);
uint64_t total_memory;
uint64_t dram_size_seven_GB = 0x1B8000000;
uint64_t dram_size_three_GB = 0xB8000000;
if (amdgpu_smu_memory_pool_size == 0)
return;
if (!is_os_64) {
dev_warn(adev->dev, "Not 64-bit OS, feature not supported\n");
goto def_value;
}
si_meminfo(&si);
total_memory = (uint64_t)si.totalram * si.mem_unit;
if ((amdgpu_smu_memory_pool_size == 1) ||
(amdgpu_smu_memory_pool_size == 2)) {
if (total_memory < dram_size_three_GB)
goto def_value1;
} else if ((amdgpu_smu_memory_pool_size == 4) ||
(amdgpu_smu_memory_pool_size == 8)) {
if (total_memory < dram_size_seven_GB)
goto def_value1;
} else {
dev_warn(adev->dev, "Smu memory pool size not supported\n");
goto def_value;
}
adev->pm.smu_prv_buffer_size = amdgpu_smu_memory_pool_size << 28;
return;
def_value1:
dev_warn(adev->dev, "No enough system memory\n");
def_value:
adev->pm.smu_prv_buffer_size = 0;
}
static int amdgpu_device_init_apu_flags(struct amdgpu_device *adev)
{
if (!(adev->flags & AMD_IS_APU) ||
adev->asic_type < CHIP_RAVEN)
return 0;
switch (adev->asic_type) {
case CHIP_RAVEN:
if (adev->pdev->device == 0x15dd)
adev->apu_flags |= AMD_APU_IS_RAVEN;
if (adev->pdev->device == 0x15d8)
adev->apu_flags |= AMD_APU_IS_PICASSO;
break;
case CHIP_RENOIR:
if ((adev->pdev->device == 0x1636) ||
(adev->pdev->device == 0x164c))
adev->apu_flags |= AMD_APU_IS_RENOIR;
else
adev->apu_flags |= AMD_APU_IS_GREEN_SARDINE;
break;
case CHIP_VANGOGH:
adev->apu_flags |= AMD_APU_IS_VANGOGH;
break;
case CHIP_YELLOW_CARP:
break;
case CHIP_CYAN_SKILLFISH:
if ((adev->pdev->device == 0x13FE) ||
(adev->pdev->device == 0x143F))
adev->apu_flags |= AMD_APU_IS_CYAN_SKILLFISH2;
break;
default:
break;
}
return 0;
}
/**
* amdgpu_device_check_arguments - validate module params
*
* @adev: amdgpu_device pointer
*
* Validates certain module parameters and updates
* the associated values used by the driver (all asics).
*/
static int amdgpu_device_check_arguments(struct amdgpu_device *adev)
{
int i;
if (amdgpu_sched_jobs < 4) {
dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
amdgpu_sched_jobs);
amdgpu_sched_jobs = 4;
} else if (!is_power_of_2(amdgpu_sched_jobs)) {
dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n",
amdgpu_sched_jobs);
amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
}
if (amdgpu_gart_size != -1 && amdgpu_gart_size < 32) {
/* gart size must be greater or equal to 32M */
dev_warn(adev->dev, "gart size (%d) too small\n",
amdgpu_gart_size);
amdgpu_gart_size = -1;
}
if (amdgpu_gtt_size != -1 && amdgpu_gtt_size < 32) {
/* gtt size must be greater or equal to 32M */
dev_warn(adev->dev, "gtt size (%d) too small\n",
amdgpu_gtt_size);
amdgpu_gtt_size = -1;
}
/* valid range is between 4 and 9 inclusive */
if (amdgpu_vm_fragment_size != -1 &&
(amdgpu_vm_fragment_size > 9 || amdgpu_vm_fragment_size < 4)) {
dev_warn(adev->dev, "valid range is between 4 and 9\n");
amdgpu_vm_fragment_size = -1;
}
if (amdgpu_sched_hw_submission < 2) {
dev_warn(adev->dev, "sched hw submission jobs (%d) must be at least 2\n",
amdgpu_sched_hw_submission);
amdgpu_sched_hw_submission = 2;
} else if (!is_power_of_2(amdgpu_sched_hw_submission)) {
dev_warn(adev->dev, "sched hw submission jobs (%d) must be a power of 2\n",
amdgpu_sched_hw_submission);
amdgpu_sched_hw_submission = roundup_pow_of_two(amdgpu_sched_hw_submission);
}
if (amdgpu_reset_method < -1 || amdgpu_reset_method > 4) {
dev_warn(adev->dev, "invalid option for reset method, reverting to default\n");
amdgpu_reset_method = -1;
}
amdgpu_device_check_smu_prv_buffer_size(adev);
amdgpu_device_check_vm_size(adev);
amdgpu_device_check_block_size(adev);
adev->firmware.load_type = amdgpu_ucode_get_load_type(adev, amdgpu_fw_load_type);
for (i = 0; i < MAX_XCP; i++) {
switch (amdgpu_enforce_isolation) {
case -1:
case 0:
default:
/* disable */
adev->enforce_isolation[i] = AMDGPU_ENFORCE_ISOLATION_DISABLE;
break;
case 1:
/* enable */
adev->enforce_isolation[i] =
AMDGPU_ENFORCE_ISOLATION_ENABLE;
break;
case 2:
/* enable legacy mode */
adev->enforce_isolation[i] =
AMDGPU_ENFORCE_ISOLATION_ENABLE_LEGACY;
break;
case 3:
/* enable only process isolation without submitting cleaner shader */
adev->enforce_isolation[i] =
AMDGPU_ENFORCE_ISOLATION_NO_CLEANER_SHADER;
break;
}
}
return 0;
}
/**
* amdgpu_switcheroo_set_state - set switcheroo state
*
* @pdev: pci dev pointer
* @state: vga_switcheroo state
*
* Callback for the switcheroo driver. Suspends or resumes
* the asics before or after it is powered up using ACPI methods.
*/
static void amdgpu_switcheroo_set_state(struct pci_dev *pdev,
enum vga_switcheroo_state state)
{
struct drm_device *dev = pci_get_drvdata(pdev);
int r;
if (amdgpu_device_supports_px(drm_to_adev(dev)) &&
state == VGA_SWITCHEROO_OFF)
return;
if (state == VGA_SWITCHEROO_ON) {
pr_info("switched on\n");
/* don't suspend or resume card normally */
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
pci_set_power_state(pdev, PCI_D0);
amdgpu_device_load_pci_state(pdev);
r = pci_enable_device(pdev);
if (r)
dev_warn(&pdev->dev, "pci_enable_device failed (%d)\n",
r);
amdgpu_device_resume(dev, true);
dev->switch_power_state = DRM_SWITCH_POWER_ON;
} else {
dev_info(&pdev->dev, "switched off\n");
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
amdgpu_device_prepare(dev);
amdgpu_device_suspend(dev, true);
amdgpu_device_cache_pci_state(pdev);
/* Shut down the device */
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3cold);
dev->switch_power_state = DRM_SWITCH_POWER_OFF;
}
}
/**
* amdgpu_switcheroo_can_switch - see if switcheroo state can change
*
* @pdev: pci dev pointer
*
* Callback for the switcheroo driver. Check of the switcheroo
* state can be changed.
* Returns true if the state can be changed, false if not.
*/
static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
/*
* FIXME: open_count is protected by drm_global_mutex but that would lead to
* locking inversion with the driver load path. And the access here is
* completely racy anyway. So don't bother with locking for now.
*/
return atomic_read(&dev->open_count) == 0;
}
static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = {
.set_gpu_state = amdgpu_switcheroo_set_state,
.reprobe = NULL,
.can_switch = amdgpu_switcheroo_can_switch,
};
/**
* amdgpu_device_ip_set_clockgating_state - set the CG state
*
* @dev: amdgpu_device pointer
* @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
* @state: clockgating state (gate or ungate)
*
* Sets the requested clockgating state for all instances of
* the hardware IP specified.
* Returns the error code from the last instance.
*/
int amdgpu_device_ip_set_clockgating_state(void *dev,
enum amd_ip_block_type block_type,
enum amd_clockgating_state state)
{
struct amdgpu_device *adev = dev;
int i, r = 0;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->type != block_type)
continue;
if (!adev->ip_blocks[i].version->funcs->set_clockgating_state)
continue;
r = adev->ip_blocks[i].version->funcs->set_clockgating_state(
&adev->ip_blocks[i], state);
if (r)
dev_err(adev->dev,
"set_clockgating_state of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
return r;
}
/**
* amdgpu_device_ip_set_powergating_state - set the PG state
*
* @dev: amdgpu_device pointer
* @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
* @state: powergating state (gate or ungate)
*
* Sets the requested powergating state for all instances of
* the hardware IP specified.
* Returns the error code from the last instance.
*/
int amdgpu_device_ip_set_powergating_state(void *dev,
enum amd_ip_block_type block_type,
enum amd_powergating_state state)
{
struct amdgpu_device *adev = dev;
int i, r = 0;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->type != block_type)
continue;
if (!adev->ip_blocks[i].version->funcs->set_powergating_state)
continue;
r = adev->ip_blocks[i].version->funcs->set_powergating_state(
&adev->ip_blocks[i], state);
if (r)
dev_err(adev->dev,
"set_powergating_state of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
return r;
}
/**
* amdgpu_device_ip_get_clockgating_state - get the CG state
*
* @adev: amdgpu_device pointer
* @flags: clockgating feature flags
*
* Walks the list of IPs on the device and updates the clockgating
* flags for each IP.
* Updates @flags with the feature flags for each hardware IP where
* clockgating is enabled.
*/
void amdgpu_device_ip_get_clockgating_state(struct amdgpu_device *adev,
u64 *flags)
{
int i;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->funcs->get_clockgating_state)
adev->ip_blocks[i].version->funcs->get_clockgating_state(
&adev->ip_blocks[i], flags);
}
}
/**
* amdgpu_device_ip_wait_for_idle - wait for idle
*
* @adev: amdgpu_device pointer
* @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
*
* Waits for the request hardware IP to be idle.
* Returns 0 for success or a negative error code on failure.
*/
int amdgpu_device_ip_wait_for_idle(struct amdgpu_device *adev,
enum amd_ip_block_type block_type)
{
int i, r;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->type == block_type) {
if (adev->ip_blocks[i].version->funcs->wait_for_idle) {
r = adev->ip_blocks[i].version->funcs->wait_for_idle(
&adev->ip_blocks[i]);
if (r)
return r;
}
break;
}
}
return 0;
}
/**
* amdgpu_device_ip_is_valid - is the hardware IP enabled
*
* @adev: amdgpu_device pointer
* @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
*
* Check if the hardware IP is enable or not.
* Returns true if it the IP is enable, false if not.
*/
bool amdgpu_device_ip_is_valid(struct amdgpu_device *adev,
enum amd_ip_block_type block_type)
{
int i;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (adev->ip_blocks[i].version->type == block_type)
return adev->ip_blocks[i].status.valid;
}
return false;
}
/**
* amdgpu_device_ip_get_ip_block - get a hw IP pointer
*
* @adev: amdgpu_device pointer
* @type: Type of hardware IP (SMU, GFX, UVD, etc.)
*
* Returns a pointer to the hardware IP block structure
* if it exists for the asic, otherwise NULL.
*/
struct amdgpu_ip_block *
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