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kernel_samsung_a34x-permissive/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
Fede2782 6db4831e98
Import A346BXXU4BWK2 kernel source 
Android 14
2024-04-28 15:51:13 +02:00

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/*
* 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/power_supply.h>
#include <linux/kthread.h>
#include <linux/console.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_atomic_helper.h>
#include <drm/amdgpu_drm.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 "bif/bif_4_1_d.h"
#include <linux/pci.h>
#include <linux/firmware.h>
#include "amdgpu_vf_error.h"
#include "amdgpu_amdkfd.h"
#include "amdgpu_pm.h"
MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin");
MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin");
#define AMDGPU_RESUME_MS 2000
static 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",
"LAST",
};
static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev);
/**
* amdgpu_device_is_px - Is the device is a dGPU with HG/PX power control
*
* @dev: drm_device pointer
*
* Returns true if the device is a dGPU with HG/PX power control,
* otherwise return false.
*/
bool amdgpu_device_is_px(struct drm_device *dev)
{
struct amdgpu_device *adev = dev->dev_private;
if (adev->flags & AMD_IS_PX)
return true;
return false;
}
/*
* MMIO register access helper functions.
*/
/**
* amdgpu_mm_rreg - read a memory mapped IO 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_mm_rreg(struct amdgpu_device *adev, uint32_t reg,
uint32_t acc_flags)
{
uint32_t ret;
if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev))
return amdgpu_virt_kiq_rreg(adev, reg);
if ((reg * 4) < adev->rmmio_size && !(acc_flags & AMDGPU_REGS_IDX))
ret = readl(((void __iomem *)adev->rmmio) + (reg * 4));
else {
unsigned long flags;
spin_lock_irqsave(&adev->mmio_idx_lock, flags);
writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
}
trace_amdgpu_mm_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 (offset < adev->rmmio_size)
return (readb(adev->rmmio + offset));
BUG();
}
/*
* 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 (offset < adev->rmmio_size)
writeb(value, adev->rmmio + offset);
else
BUG();
}
/**
* amdgpu_mm_wreg - write to a memory mapped IO 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_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
uint32_t acc_flags)
{
trace_amdgpu_mm_wreg(adev->pdev->device, reg, v);
if (adev->asic_type >= CHIP_VEGA10 && reg == 0) {
adev->last_mm_index = v;
}
if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev))
return amdgpu_virt_kiq_wreg(adev, reg, v);
if ((reg * 4) < adev->rmmio_size && !(acc_flags & AMDGPU_REGS_IDX))
writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
else {
unsigned long flags;
spin_lock_irqsave(&adev->mmio_idx_lock, flags);
writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
}
if (adev->asic_type >= CHIP_VEGA10 && reg == 1 && adev->last_mm_index == 0x5702C) {
udelay(500);
}
}
/**
* amdgpu_io_rreg - read an IO register
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
*
* Returns the 32 bit value from the offset specified.
*/
u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg)
{
if ((reg * 4) < adev->rio_mem_size)
return ioread32(adev->rio_mem + (reg * 4));
else {
iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
return ioread32(adev->rio_mem + (mmMM_DATA * 4));
}
}
/**
* amdgpu_io_wreg - write to an IO register
*
* @adev: amdgpu_device pointer
* @reg: dword aligned register offset
* @v: 32 bit value to write to the register
*
* Writes the value specified to the offset specified.
*/
void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
{
if (adev->asic_type >= CHIP_VEGA10 && reg == 0) {
adev->last_mm_index = v;
}
if ((reg * 4) < adev->rio_mem_size)
iowrite32(v, adev->rio_mem + (reg * 4));
else {
iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
iowrite32(v, adev->rio_mem + (mmMM_DATA * 4));
}
if (adev->asic_type >= CHIP_VEGA10 && reg == 1 && adev->last_mm_index == 0x5702C) {
udelay(500);
}
}
/**
* amdgpu_mm_rdoorbell - read a doorbell dword
*
* @adev: amdgpu_device pointer
* @index: doorbell index
*
* Returns the value in the doorbell aperture at the
* requested doorbell index (CIK).
*/
u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index)
{
if (index < adev->doorbell.num_doorbells) {
return readl(adev->doorbell.ptr + index);
} else {
DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
return 0;
}
}
/**
* amdgpu_mm_wdoorbell - write a doorbell dword
*
* @adev: amdgpu_device pointer
* @index: doorbell index
* @v: value to write
*
* Writes @v to the doorbell aperture at the
* requested doorbell index (CIK).
*/
void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v)
{
if (index < adev->doorbell.num_doorbells) {
writel(v, adev->doorbell.ptr + index);
} else {
DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
}
}
/**
* amdgpu_mm_rdoorbell64 - read a doorbell Qword
*
* @adev: amdgpu_device pointer
* @index: doorbell index
*
* Returns the value in the doorbell aperture at the
* requested doorbell index (VEGA10+).
*/
u64 amdgpu_mm_rdoorbell64(struct amdgpu_device *adev, u32 index)
{
if (index < adev->doorbell.num_doorbells) {
return atomic64_read((atomic64_t *)(adev->doorbell.ptr + index));
} else {
DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
return 0;
}
}
/**
* amdgpu_mm_wdoorbell64 - write a doorbell Qword
*
* @adev: amdgpu_device pointer
* @index: doorbell index
* @v: value to write
*
* Writes @v to the doorbell aperture at the
* requested doorbell index (VEGA10+).
*/
void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
{
if (index < adev->doorbell.num_doorbells) {
atomic64_set((atomic64_t *)(adev->doorbell.ptr + index), v);
} else {
DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
}
}
/**
* 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)
{
DRM_ERROR("Invalid callback to read register 0x%04X\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)
{
DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\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)
{
DRM_ERROR("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)
{
DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n",
reg, block, v);
BUG();
}
/**
* amdgpu_device_vram_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_vram_scratch_init(struct amdgpu_device *adev)
{
return amdgpu_bo_create_kernel(adev, AMDGPU_GPU_PAGE_SIZE,
PAGE_SIZE, AMDGPU_GEM_DOMAIN_VRAM,
&adev->vram_scratch.robj,
&adev->vram_scratch.gpu_addr,
(void **)&adev->vram_scratch.ptr);
}
/**
* amdgpu_device_vram_scratch_fini - Free the VRAM scratch page
*
* @adev: amdgpu device pointer
*
* Frees the VRAM scratch page.
*/
static void amdgpu_device_vram_scratch_fini(struct amdgpu_device *adev)
{
amdgpu_bo_free_kernel(&adev->vram_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 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;
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);
}
/*
* GPU doorbell aperture helpers function.
*/
/**
* amdgpu_device_doorbell_init - Init doorbell driver information.
*
* @adev: amdgpu_device pointer
*
* Init doorbell driver information (CIK)
* Returns 0 on success, error on failure.
*/
static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
{
/* No doorbell on SI hardware generation */
if (adev->asic_type < CHIP_BONAIRE) {
adev->doorbell.base = 0;
adev->doorbell.size = 0;
adev->doorbell.num_doorbells = 0;
adev->doorbell.ptr = NULL;
return 0;
}
if (pci_resource_flags(adev->pdev, 2) & IORESOURCE_UNSET)
return -EINVAL;
/* doorbell bar mapping */
adev->doorbell.base = pci_resource_start(adev->pdev, 2);
adev->doorbell.size = pci_resource_len(adev->pdev, 2);
adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32),
AMDGPU_DOORBELL_MAX_ASSIGNMENT+1);
if (adev->doorbell.num_doorbells == 0)
return -EINVAL;
adev->doorbell.ptr = ioremap(adev->doorbell.base,
adev->doorbell.num_doorbells *
sizeof(u32));
if (adev->doorbell.ptr == NULL)
return -ENOMEM;
return 0;
}
/**
* amdgpu_device_doorbell_fini - Tear down doorbell driver information.
*
* @adev: amdgpu_device pointer
*
* Tear down doorbell driver information (CIK)
*/
static void amdgpu_device_doorbell_fini(struct amdgpu_device *adev)
{
iounmap(adev->doorbell.ptr);
adev->doorbell.ptr = NULL;
}
/*
* 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 offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb);
if (offset < adev->wb.num_wb) {
__set_bit(offset, adev->wb.used);
*wb = offset << 3; /* convert to dw offset */
return 0;
} else {
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)
{
wb >>= 3;
if (wb < adev->wb.num_wb)
__clear_bit(wb, adev->wb.used);
}
/**
* amdgpu_device_vram_location - try to find VRAM location
*
* @adev: amdgpu device structure holding all necessary informations
* @mc: memory controller structure holding memory informations
* @base: base address at which to put VRAM
*
* Function will try to place VRAM at base address provided
* as parameter.
*/
void amdgpu_device_vram_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc, u64 base)
{
uint64_t limit = (uint64_t)amdgpu_vram_limit << 20;
mc->vram_start = base;
mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
if (limit && limit < mc->real_vram_size)
mc->real_vram_size = limit;
dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
mc->mc_vram_size >> 20, mc->vram_start,
mc->vram_end, mc->real_vram_size >> 20);
}
/**
* amdgpu_device_gart_location - try to find GART location
*
* @adev: amdgpu device structure holding all necessary informations
* @mc: memory controller structure holding memory informations
*
* Function will place try to place GART before or after VRAM.
*
* If GART size is bigger than space left then we ajust GART size.
* Thus function will never fails.
*/
void amdgpu_device_gart_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc)
{
u64 size_af, size_bf;
mc->gart_size += adev->pm.smu_prv_buffer_size;
size_af = adev->gmc.mc_mask - mc->vram_end;
size_bf = mc->vram_start;
if (size_bf > size_af) {
if (mc->gart_size > size_bf) {
dev_warn(adev->dev, "limiting GART\n");
mc->gart_size = size_bf;
}
mc->gart_start = 0;
} else {
if (mc->gart_size > size_af) {
dev_warn(adev->dev, "limiting GART\n");
mc->gart_size = size_af;
}
/* VCE doesn't like it when BOs cross a 4GB segment, so align
* the GART base on a 4GB boundary as well.
*/
mc->gart_start = ALIGN(mc->vram_end + 1, 0x100000000ULL);
}
mc->gart_end = mc->gart_start + mc->gart_size - 1;
dev_info(adev->dev, "GART: %lluM 0x%016llX - 0x%016llX\n",
mc->gart_size >> 20, mc->gart_start, mc->gart_end);
}
/**
* 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)
{
u64 space_needed = roundup_pow_of_two(adev->gmc.real_vram_size);
u32 rbar_size = order_base_2(((space_needed >> 20) | 1)) - 1;
struct pci_bus *root;
struct resource *res;
unsigned i;
u16 cmd;
int r;
/* Bypass for VF */
if (amdgpu_sriov_vf(adev))
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;
/* 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_device_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)
DRM_INFO("Not enough PCI address space for a large BAR.");
else if (r && r != -ENOTSUPP)
DRM_ERROR("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_device_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;
if (amdgpu_sriov_vf(adev))
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 occured */
if (err)
return true;
fw_ver = *((uint32_t *)adev->pm.fw->data + 69);
if (fw_ver < 0x00160e00)
return true;
}
}
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;
}
/* if we get transitioned to only one device, take VGA back */
/**
* amdgpu_device_vga_set_decode - enable/disable vga decode
*
* @cookie: amdgpu_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(void *cookie, bool state)
{
struct amdgpu_device *adev = cookie;
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) ? true : false;
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) {
DRM_WARN("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 {
DRM_WARN("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:
DRM_WARN("No enough system memory\n");
def_value:
adev->pm.smu_prv_buffer_size = 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 void amdgpu_device_check_arguments(struct amdgpu_device *adev)
{
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;
}
amdgpu_device_check_smu_prv_buffer_size(adev);
amdgpu_device_check_vm_size(adev);
amdgpu_device_check_block_size(adev);
if (amdgpu_vram_page_split != -1 && (amdgpu_vram_page_split < 16 ||
!is_power_of_2(amdgpu_vram_page_split))) {
dev_warn(adev->dev, "invalid VRAM page split (%d)\n",
amdgpu_vram_page_split);
amdgpu_vram_page_split = 1024;
}
if (amdgpu_lockup_timeout == 0) {
dev_warn(adev->dev, "lockup_timeout msut be > 0, adjusting to 10000\n");
amdgpu_lockup_timeout = 10000;
}
adev->firmware.load_type = amdgpu_ucode_get_load_type(adev, amdgpu_fw_load_type);
}
/**
* amdgpu_switcheroo_set_state - set switcheroo state
*
* @pdev: pci dev pointer
* @state: vga_switcheroo state
*
* Callback for the switcheroo driver. Suspends or resumes the
* 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);
if (amdgpu_device_is_px(dev) && state == VGA_SWITCHEROO_OFF)
return;
if (state == VGA_SWITCHEROO_ON) {
pr_info("amdgpu: switched on\n");
/* don't suspend or resume card normally */
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
amdgpu_device_resume(dev, true, true);
dev->switch_power_state = DRM_SWITCH_POWER_ON;
drm_kms_helper_poll_enable(dev);
} else {
pr_info("amdgpu: switched off\n");
drm_kms_helper_poll_disable(dev);
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
amdgpu_device_suspend(dev, true, true);
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 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(
(void *)adev, state);
if (r)
DRM_ERROR("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(
(void *)adev, state);
if (r)
DRM_ERROR("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,
u32 *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((void *)adev, 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) {
r = adev->ip_blocks[i].version->funcs->wait_for_idle((void *)adev);
if (r)
return r;
break;
}
}
return 0;
}
/**
* amdgpu_device_ip_is_idle - is the hardware IP idle
*
* @adev: amdgpu_device pointer
* @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
*
* Check if the hardware IP is idle or not.
* Returns true if it the IP is idle, false if not.
*/
bool amdgpu_device_ip_is_idle(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].status.valid)
continue;
if (adev->ip_blocks[i].version->type == block_type)
return adev->ip_blocks[i].version->funcs->is_idle((void *)adev);
}
return true;
}
/**
* 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 *
amdgpu_device_ip_get_ip_block(struct amdgpu_device *adev,
enum amd_ip_block_type type)
{
int i;
for (i = 0; i < adev->num_ip_blocks; i++)
if (adev->ip_blocks[i].version->type == type)
return &adev->ip_blocks[i];
return NULL;
}
/**
* amdgpu_device_ip_block_version_cmp
*
* @adev: amdgpu_device pointer
* @type: enum amd_ip_block_type
* @major: major version
* @minor: minor version
*
* return 0 if equal or greater
* return 1 if smaller or the ip_block doesn't exist
*/
int amdgpu_device_ip_block_version_cmp(struct amdgpu_device *adev,
enum amd_ip_block_type type,
u32 major, u32 minor)
{
struct amdgpu_ip_block *ip_block = amdgpu_device_ip_get_ip_block(adev, type);
if (ip_block && ((ip_block->version->major > major) ||
((ip_block->version->major == major) &&
(ip_block->version->minor >= minor))))
return 0;
return 1;
}
/**
* amdgpu_device_ip_block_add
*
* @adev: amdgpu_device pointer
* @ip_block_version: pointer to the IP to add
*
* Adds the IP block driver information to the collection of IPs
* on the asic.
*/
int amdgpu_device_ip_block_add(struct amdgpu_device *adev,
const struct amdgpu_ip_block_version *ip_block_version)
{
if (!ip_block_version)
return -EINVAL;
DRM_INFO("add ip block number %d <%s>\n", adev->num_ip_blocks,
ip_block_version->funcs->name);
adev->ip_blocks[adev->num_ip_blocks++].version = ip_block_version;
return 0;
}
/**
* amdgpu_device_enable_virtual_display - enable virtual display feature
*
* @adev: amdgpu_device pointer
*
* Enabled the virtual display feature if the user has enabled it via
* the module parameter virtual_display. This feature provides a virtual
* display hardware on headless boards or in virtualized environments.
* This function parses and validates the configuration string specified by
* the user and configues the virtual display configuration (number of
* virtual connectors, crtcs, etc.) specified.
*/
static void amdgpu_device_enable_virtual_display(struct amdgpu_device *adev)
{
adev->enable_virtual_display = false;
if (amdgpu_virtual_display) {
struct drm_device *ddev = adev->ddev;
const char *pci_address_name = pci_name(ddev->pdev);
char *pciaddstr, *pciaddstr_tmp, *pciaddname_tmp, *pciaddname;
pciaddstr = kstrdup(amdgpu_virtual_display, GFP_KERNEL);
pciaddstr_tmp = pciaddstr;
while ((pciaddname_tmp = strsep(&pciaddstr_tmp, ";"))) {
pciaddname = strsep(&pciaddname_tmp, ",");
if (!strcmp("all", pciaddname)
|| !strcmp(pci_address_name, pciaddname)) {
long num_crtc;
int res = -1;
adev->enable_virtual_display = true;
if (pciaddname_tmp)
res = kstrtol(pciaddname_tmp, 10,
&num_crtc);
if (!res) {
if (num_crtc < 1)
num_crtc = 1;
if (num_crtc > 6)
num_crtc = 6;
adev->mode_info.num_crtc = num_crtc;
} else {
adev->mode_info.num_crtc = 1;
}
break;
}
}
DRM_INFO("virtual display string:%s, %s:virtual_display:%d, num_crtc:%d\n",
amdgpu_virtual_display, pci_address_name,
adev->enable_virtual_display, adev->mode_info.num_crtc);
kfree(pciaddstr);
}
}
/**
* amdgpu_device_parse_gpu_info_fw - parse gpu info firmware
*
* @adev: amdgpu_device pointer
*
* Parses the asic configuration parameters specified in the gpu info
* firmware and makes them availale to the driver for use in configuring
* the asic.
* Returns 0 on success, -EINVAL on failure.
*/
static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
{
const char *chip_name;
char fw_name[30];
int err;
const struct gpu_info_firmware_header_v1_0 *hdr;
adev->firmware.gpu_info_fw = NULL;
switch (adev->asic_type) {
case CHIP_TOPAZ:
case CHIP_TONGA:
case CHIP_FIJI:
case CHIP_POLARIS10:
case CHIP_POLARIS11:
case CHIP_POLARIS12:
case CHIP_VEGAM:
case CHIP_CARRIZO:
case CHIP_STONEY:
#ifdef CONFIG_DRM_AMDGPU_SI
case CHIP_VERDE:
case CHIP_TAHITI:
case CHIP_PITCAIRN:
case CHIP_OLAND:
case CHIP_HAINAN:
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
case CHIP_BONAIRE:
case CHIP_HAWAII:
case CHIP_KAVERI:
case CHIP_KABINI:
case CHIP_MULLINS:
#endif
case CHIP_VEGA20:
default:
return 0;
case CHIP_VEGA10:
chip_name = "vega10";
break;
case CHIP_VEGA12:
chip_name = "vega12";
break;
case CHIP_RAVEN:
chip_name = "raven";
break;
}
snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_gpu_info.bin", chip_name);
err = request_firmware(&adev->firmware.gpu_info_fw, fw_name, adev->dev);
if (err) {
dev_err(adev->dev,
"Failed to load gpu_info firmware \"%s\"\n",
fw_name);
goto out;
}
err = amdgpu_ucode_validate(adev->firmware.gpu_info_fw);
if (err) {
dev_err(adev->dev,
"Failed to validate gpu_info firmware \"%s\"\n",
fw_name);
goto out;
}
hdr = (const struct gpu_info_firmware_header_v1_0 *)adev->firmware.gpu_info_fw->data;
amdgpu_ucode_print_gpu_info_hdr(&hdr->header);
switch (hdr->version_major) {
case 1:
{
const struct gpu_info_firmware_v1_0 *gpu_info_fw =
(const struct gpu_info_firmware_v1_0 *)(adev->firmware.gpu_info_fw->data +
le32_to_cpu(hdr->header.ucode_array_offset_bytes));
adev->gfx.config.max_shader_engines = le32_to_cpu(gpu_info_fw->gc_num_se);
adev->gfx.config.max_cu_per_sh = le32_to_cpu(gpu_info_fw->gc_num_cu_per_sh);
adev->gfx.config.max_sh_per_se = le32_to_cpu(gpu_info_fw->gc_num_sh_per_se);
adev->gfx.config.max_backends_per_se = le32_to_cpu(gpu_info_fw->gc_num_rb_per_se);
adev->gfx.config.max_texture_channel_caches =
le32_to_cpu(gpu_info_fw->gc_num_tccs);
adev->gfx.config.max_gprs = le32_to_cpu(gpu_info_fw->gc_num_gprs);
adev->gfx.config.max_gs_threads = le32_to_cpu(gpu_info_fw->gc_num_max_gs_thds);
adev->gfx.config.gs_vgt_table_depth = le32_to_cpu(gpu_info_fw->gc_gs_table_depth);
adev->gfx.config.gs_prim_buffer_depth = le32_to_cpu(gpu_info_fw->gc_gsprim_buff_depth);
adev->gfx.config.double_offchip_lds_buf =
le32_to_cpu(gpu_info_fw->gc_double_offchip_lds_buffer);
adev->gfx.cu_info.wave_front_size = le32_to_cpu(gpu_info_fw->gc_wave_size);
adev->gfx.cu_info.max_waves_per_simd =
le32_to_cpu(gpu_info_fw->gc_max_waves_per_simd);
adev->gfx.cu_info.max_scratch_slots_per_cu =
le32_to_cpu(gpu_info_fw->gc_max_scratch_slots_per_cu);
adev->gfx.cu_info.lds_size = le32_to_cpu(gpu_info_fw->gc_lds_size);
break;
}
default:
dev_err(adev->dev,
"Unsupported gpu_info table %d\n", hdr->header.ucode_version);
err = -EINVAL;
goto out;
}
out:
return err;
}
/**
* amdgpu_device_ip_early_init - run early init for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Early initialization pass for hardware IPs. The hardware IPs that make
* up each asic are discovered each IP's early_init callback is run. This
* is the first stage in initializing the asic.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
{
int i, r;
amdgpu_device_enable_virtual_display(adev);
switch (adev->asic_type) {
case CHIP_TOPAZ:
case CHIP_TONGA:
case CHIP_FIJI:
case CHIP_POLARIS10:
case CHIP_POLARIS11:
case CHIP_POLARIS12:
case CHIP_VEGAM:
case CHIP_CARRIZO:
case CHIP_STONEY:
if (adev->asic_type == CHIP_CARRIZO || adev->asic_type == CHIP_STONEY)
adev->family = AMDGPU_FAMILY_CZ;
else
adev->family = AMDGPU_FAMILY_VI;
r = vi_set_ip_blocks(adev);
if (r)
return r;
break;
#ifdef CONFIG_DRM_AMDGPU_SI
case CHIP_VERDE:
case CHIP_TAHITI:
case CHIP_PITCAIRN:
case CHIP_OLAND:
case CHIP_HAINAN:
adev->family = AMDGPU_FAMILY_SI;
r = si_set_ip_blocks(adev);
if (r)
return r;
break;
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
case CHIP_BONAIRE:
case CHIP_HAWAII:
case CHIP_KAVERI:
case CHIP_KABINI:
case CHIP_MULLINS:
if ((adev->asic_type == CHIP_BONAIRE) || (adev->asic_type == CHIP_HAWAII))
adev->family = AMDGPU_FAMILY_CI;
else
adev->family = AMDGPU_FAMILY_KV;
r = cik_set_ip_blocks(adev);
if (r)
return r;
break;
#endif
case CHIP_VEGA10:
case CHIP_VEGA12:
case CHIP_VEGA20:
case CHIP_RAVEN:
if (adev->asic_type == CHIP_RAVEN)
adev->family = AMDGPU_FAMILY_RV;
else
adev->family = AMDGPU_FAMILY_AI;
r = soc15_set_ip_blocks(adev);
if (r)
return r;
break;
default:
/* FIXME: not supported yet */
return -EINVAL;
}
r = amdgpu_device_parse_gpu_info_fw(adev);
if (r)
return r;
amdgpu_amdkfd_device_probe(adev);
if (amdgpu_sriov_vf(adev)) {
r = amdgpu_virt_request_full_gpu(adev, true);
if (r)
return -EAGAIN;
}
adev->powerplay.pp_feature = amdgpu_pp_feature_mask;
for (i = 0; i < adev->num_ip_blocks; i++) {
if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
DRM_ERROR("disabled ip block: %d <%s>\n",
i, adev->ip_blocks[i].version->funcs->name);
adev->ip_blocks[i].status.valid = false;
} else {
if (adev->ip_blocks[i].version->funcs->early_init) {
r = adev->ip_blocks[i].version->funcs->early_init((void *)adev);
if (r == -ENOENT) {
adev->ip_blocks[i].status.valid = false;
} else if (r) {
DRM_ERROR("early_init of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
} else {
adev->ip_blocks[i].status.valid = true;
}
} else {
adev->ip_blocks[i].status.valid = true;
}
}
}
adev->cg_flags &= amdgpu_cg_mask;
adev->pg_flags &= amdgpu_pg_mask;
return 0;
}
/**
* amdgpu_device_ip_init - run init for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Main initialization pass for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked and the sw_init and hw_init callbacks
* are run. sw_init initializes the software state associated with each IP
* and hw_init initializes the hardware associated with each IP.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_init(struct amdgpu_device *adev)
{
int i, r;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
r = adev->ip_blocks[i].version->funcs->sw_init((void *)adev);
if (r) {
DRM_ERROR("sw_init of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
adev->ip_blocks[i].status.sw = true;
/* need to do gmc hw init early so we can allocate gpu mem */
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
r = amdgpu_device_vram_scratch_init(adev);
if (r) {
DRM_ERROR("amdgpu_vram_scratch_init failed %d\n", r);
return r;
}
r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
if (r) {
DRM_ERROR("hw_init %d failed %d\n", i, r);
return r;
}
r = amdgpu_device_wb_init(adev);
if (r) {
DRM_ERROR("amdgpu_device_wb_init failed %d\n", r);
return r;
}
adev->ip_blocks[i].status.hw = true;
/* right after GMC hw init, we create CSA */
if (amdgpu_sriov_vf(adev)) {
r = amdgpu_allocate_static_csa(adev);
if (r) {
DRM_ERROR("allocate CSA failed %d\n", r);
return r;
}
}
}
}
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.sw)
continue;
if (adev->ip_blocks[i].status.hw)
continue;
r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
if (r) {
DRM_ERROR("hw_init of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
adev->ip_blocks[i].status.hw = true;
}
amdgpu_amdkfd_device_init(adev);
if (amdgpu_sriov_vf(adev)) {
amdgpu_virt_init_data_exchange(adev);
amdgpu_virt_release_full_gpu(adev, true);
}
return 0;
}
/**
* amdgpu_device_fill_reset_magic - writes reset magic to gart pointer
*
* @adev: amdgpu_device pointer
*
* Writes a reset magic value to the gart pointer in VRAM. The driver calls
* this function before a GPU reset. If the value is retained after a
* GPU reset, VRAM has not been lost. Some GPU resets may destry VRAM contents.
*/
static void amdgpu_device_fill_reset_magic(struct amdgpu_device *adev)
{
memcpy(adev->reset_magic, adev->gart.ptr, AMDGPU_RESET_MAGIC_NUM);
}
/**
* amdgpu_device_check_vram_lost - check if vram is valid
*
* @adev: amdgpu_device pointer
*
* Checks the reset magic value written to the gart pointer in VRAM.
* The driver calls this after a GPU reset to see if the contents of
* VRAM is lost or now.
* returns true if vram is lost, false if not.
*/
static bool amdgpu_device_check_vram_lost(struct amdgpu_device *adev)
{
return !!memcmp(adev->gart.ptr, adev->reset_magic,
AMDGPU_RESET_MAGIC_NUM);
}
/**
* amdgpu_device_ip_late_set_cg_state - late init for clockgating
*
* @adev: amdgpu_device pointer
*
* Late initialization pass enabling clockgating for hardware IPs.
* The list of all the hardware IPs that make up the asic is walked and the
* set_clockgating_state callbacks are run. This stage is run late
* in the init process.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_late_set_cg_state(struct amdgpu_device *adev)
{
int i = 0, r;
if (amdgpu_emu_mode == 1)
return 0;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
/* skip CG for VCE/UVD, it's handled specially */
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN &&
adev->ip_blocks[i].version->funcs->set_clockgating_state) {
/* enable clockgating to save power */
r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_GATE);
if (r) {
DRM_ERROR("set_clockgating_state(gate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
}
}
return 0;
}
static int amdgpu_device_ip_late_set_pg_state(struct amdgpu_device *adev)
{
int i = 0, r;
if (amdgpu_emu_mode == 1)
return 0;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
/* skip CG for VCE/UVD, it's handled specially */
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN &&
adev->ip_blocks[i].version->funcs->set_powergating_state) {
/* enable powergating to save power */
r = adev->ip_blocks[i].version->funcs->set_powergating_state((void *)adev,
AMD_PG_STATE_GATE);
if (r) {
DRM_ERROR("set_powergating_state(gate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
}
}
return 0;
}
/**
* amdgpu_device_ip_late_init - run late init for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Late initialization pass for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked and the late_init callbacks are run.
* late_init covers any special initialization that an IP requires
* after all of the have been initialized or something that needs to happen
* late in the init process.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_late_init(struct amdgpu_device *adev)
{
int i = 0, r;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->funcs->late_init) {
r = adev->ip_blocks[i].version->funcs->late_init((void *)adev);
if (r) {
DRM_ERROR("late_init of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
adev->ip_blocks[i].status.late_initialized = true;
}
}
amdgpu_device_ip_late_set_cg_state(adev);
amdgpu_device_ip_late_set_pg_state(adev);
queue_delayed_work(system_wq, &adev->late_init_work,
msecs_to_jiffies(AMDGPU_RESUME_MS));
amdgpu_device_fill_reset_magic(adev);
return 0;
}
/**
* amdgpu_device_ip_fini - run fini for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Main teardown pass for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked and the hw_fini and sw_fini callbacks
* are run. hw_fini tears down the hardware associated with each IP
* and sw_fini tears down any software state associated with each IP.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
{
int i, r;
amdgpu_amdkfd_device_fini(adev);
/* need to disable SMC first */
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.hw)
continue;
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC &&
adev->ip_blocks[i].version->funcs->set_clockgating_state) {
/* ungate blocks before hw fini so that we can shutdown the blocks safely */
r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
if (adev->powerplay.pp_funcs->set_powergating_by_smu)
amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false);
r = adev->ip_blocks[i].version->funcs->hw_fini((void *)adev);
/* XXX handle errors */
if (r) {
DRM_DEBUG("hw_fini of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
adev->ip_blocks[i].status.hw = false;
break;
}
}
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.hw)
continue;
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE &&
adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN &&
adev->ip_blocks[i].version->funcs->set_clockgating_state) {
/* ungate blocks before hw fini so that we can shutdown the blocks safely */
r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
}
r = adev->ip_blocks[i].version->funcs->hw_fini((void *)adev);
/* XXX handle errors */
if (r) {
DRM_DEBUG("hw_fini of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
adev->ip_blocks[i].status.hw = false;
}
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.sw)
continue;
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
amdgpu_free_static_csa(adev);
amdgpu_device_wb_fini(adev);
amdgpu_device_vram_scratch_fini(adev);
}
r = adev->ip_blocks[i].version->funcs->sw_fini((void *)adev);
/* XXX handle errors */
if (r) {
DRM_DEBUG("sw_fini of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
adev->ip_blocks[i].status.sw = false;
adev->ip_blocks[i].status.valid = false;
}
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.late_initialized)
continue;
if (adev->ip_blocks[i].version->funcs->late_fini)
adev->ip_blocks[i].version->funcs->late_fini((void *)adev);
adev->ip_blocks[i].status.late_initialized = false;
}
if (amdgpu_sriov_vf(adev))
if (amdgpu_virt_release_full_gpu(adev, false))
DRM_ERROR("failed to release exclusive mode on fini\n");
return 0;
}
/**
* amdgpu_device_ip_late_init_func_handler - work handler for clockgating
*
* @work: work_struct
*
* Work handler for amdgpu_device_ip_late_set_cg_state. We put the
* clockgating setup into a worker thread to speed up driver init and
* resume from suspend.
*/
static void amdgpu_device_ip_late_init_func_handler(struct work_struct *work)
{
struct amdgpu_device *adev =
container_of(work, struct amdgpu_device, late_init_work.work);
int r;
r = amdgpu_ib_ring_tests(adev);
if (r)
DRM_ERROR("ib ring test failed (%d).\n", r);
}
/**
* amdgpu_device_ip_suspend_phase1 - run suspend for hardware IPs (phase 1)
*
* @adev: amdgpu_device pointer
*
* Main suspend function for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked, clockgating is disabled and the
* suspend callbacks are run. suspend puts the hardware and software state
* in each IP into a state suitable for suspend.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
{
int i, r;
if (amdgpu_sriov_vf(adev))
amdgpu_virt_request_full_gpu(adev, false);
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.valid)
continue;
/* displays are handled separately */
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) {
/* ungate blocks so that suspend can properly shut them down */
if (adev->ip_blocks[i].version->funcs->set_clockgating_state) {
r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
}
/* XXX handle errors */
r = adev->ip_blocks[i].version->funcs->suspend(adev);
/* XXX handle errors */
if (r) {
DRM_ERROR("suspend of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
}
}
if (amdgpu_sriov_vf(adev))
amdgpu_virt_release_full_gpu(adev, false);
return 0;
}
/**
* amdgpu_device_ip_suspend_phase2 - run suspend for hardware IPs (phase 2)
*
* @adev: amdgpu_device pointer
*
* Main suspend function for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked, clockgating is disabled and the
* suspend callbacks are run. suspend puts the hardware and software state
* in each IP into a state suitable for suspend.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev)
{
int i, r;
if (amdgpu_sriov_vf(adev))
amdgpu_virt_request_full_gpu(adev, false);
/* ungate SMC block first */
r = amdgpu_device_ip_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_SMC,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) SMC failed %d\n", r);
}
/* call smu to disable gfx off feature first when suspend */
if (adev->powerplay.pp_funcs->set_powergating_by_smu)
amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false);
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.valid)
continue;
/* displays are handled in phase1 */
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE)
continue;
/* ungate blocks so that suspend can properly shut them down */
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_SMC &&
adev->ip_blocks[i].version->funcs->set_clockgating_state) {
r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
}
/* XXX handle errors */
r = adev->ip_blocks[i].version->funcs->suspend(adev);
/* XXX handle errors */
if (r) {
DRM_ERROR("suspend of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
}
}
if (amdgpu_sriov_vf(adev))
amdgpu_virt_release_full_gpu(adev, false);
return 0;
}
/**
* amdgpu_device_ip_suspend - run suspend for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Main suspend function for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked, clockgating is disabled and the
* suspend callbacks are run. suspend puts the hardware and software state
* in each IP into a state suitable for suspend.
* Returns 0 on success, negative error code on failure.
*/
int amdgpu_device_ip_suspend(struct amdgpu_device *adev)
{
int r;
r = amdgpu_device_ip_suspend_phase1(adev);
if (r)
return r;
r = amdgpu_device_ip_suspend_phase2(adev);
return r;
}
static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev)
{
int i, r;
static enum amd_ip_block_type ip_order[] = {
AMD_IP_BLOCK_TYPE_GMC,
AMD_IP_BLOCK_TYPE_COMMON,
AMD_IP_BLOCK_TYPE_PSP,
AMD_IP_BLOCK_TYPE_IH,
};
for (i = 0; i < ARRAY_SIZE(ip_order); i++) {
int j;
struct amdgpu_ip_block *block;
for (j = 0; j < adev->num_ip_blocks; j++) {
block = &adev->ip_blocks[j];
if (block->version->type != ip_order[i] ||
!block->status.valid)
continue;
r = block->version->funcs->hw_init(adev);
DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"succeeded");
if (r)
return r;
}
}
return 0;
}
static int amdgpu_device_ip_reinit_late_sriov(struct amdgpu_device *adev)
{
int i, r;
static enum amd_ip_block_type ip_order[] = {
AMD_IP_BLOCK_TYPE_SMC,
AMD_IP_BLOCK_TYPE_DCE,
AMD_IP_BLOCK_TYPE_GFX,
AMD_IP_BLOCK_TYPE_SDMA,
AMD_IP_BLOCK_TYPE_UVD,
AMD_IP_BLOCK_TYPE_VCE
};
for (i = 0; i < ARRAY_SIZE(ip_order); i++) {
int j;
struct amdgpu_ip_block *block;
for (j = 0; j < adev->num_ip_blocks; j++) {
block = &adev->ip_blocks[j];
if (block->version->type != ip_order[i] ||
!block->status.valid)
continue;
r = block->version->funcs->hw_init(adev);
DRM_INFO("RE-INIT: %s %s\n", block->version->funcs->name, r?"failed":"succeeded");
if (r)
return r;
}
}
return 0;
}
/**
* amdgpu_device_ip_resume_phase1 - run resume for hardware IPs
*
* @adev: amdgpu_device pointer
*
* First resume function for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked and the resume callbacks are run for
* COMMON, GMC, and IH. resume puts the hardware into a functional state
* after a suspend and updates the software state as necessary. This
* function is also used for restoring the GPU after a GPU reset.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_resume_phase1(struct amdgpu_device *adev)
{
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 == AMD_IP_BLOCK_TYPE_COMMON ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH) {
r = adev->ip_blocks[i].version->funcs->resume(adev);
if (r) {
DRM_ERROR("resume of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
}
}
return 0;
}
/**
* amdgpu_device_ip_resume_phase2 - run resume for hardware IPs
*
* @adev: amdgpu_device pointer
*
* First resume function for hardware IPs. The list of all the hardware
* IPs that make up the asic is walked and the resume callbacks are run for
* all blocks except COMMON, GMC, and IH. resume puts the hardware into a
* functional state after a suspend and updates the software state as
* necessary. This function is also used for restoring the GPU after a GPU
* reset.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_resume_phase2(struct amdgpu_device *adev)
{
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 == AMD_IP_BLOCK_TYPE_COMMON ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH)
continue;
r = adev->ip_blocks[i].version->funcs->resume(adev);
if (r) {
DRM_ERROR("resume of IP block <%s> failed %d\n",
adev->ip_blocks[i].version->funcs->name, r);
return r;
}
}
return 0;
}
/**
* amdgpu_device_ip_resume - run resume for hardware IPs
*
* @adev: amdgpu_device pointer
*
* Main resume function for hardware IPs. The hardware IPs
* are split into two resume functions because they are
* are also used in in recovering from a GPU reset and some additional
* steps need to be take between them. In this case (S3/S4) they are
* run sequentially.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_resume(struct amdgpu_device *adev)
{
int r;
r = amdgpu_device_ip_resume_phase1(adev);
if (r)
return r;
r = amdgpu_device_ip_resume_phase2(adev);
return r;
}
/**
* amdgpu_device_detect_sriov_bios - determine if the board supports SR-IOV
*
* @adev: amdgpu_device pointer
*
* Query the VBIOS data tables to determine if the board supports SR-IOV.
*/
static void amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev)
{
if (amdgpu_sriov_vf(adev)) {
if (adev->is_atom_fw) {
if (amdgpu_atomfirmware_gpu_supports_virtualization(adev))
adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS;
} else {
if (amdgpu_atombios_has_gpu_virtualization_table(adev))
adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS;
}
if (!(adev->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS))
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_NO_VBIOS, 0, 0);
}
}
/**
* amdgpu_device_asic_has_dc_support - determine if DC supports the asic
*
* @asic_type: AMD asic type
*
* Check if there is DC (new modesetting infrastructre) support for an asic.
* returns true if DC has support, false if not.
*/
bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
{
switch (asic_type) {
#if defined(CONFIG_DRM_AMD_DC)
case CHIP_BONAIRE:
case CHIP_KAVERI:
case CHIP_KABINI:
case CHIP_MULLINS:
/*
* We have systems in the wild with these ASICs that require
* LVDS and VGA support which is not supported with DC.
*
* Fallback to the non-DC driver here by default so as not to
* cause regressions.
*/
return amdgpu_dc > 0;
case CHIP_HAWAII:
case CHIP_CARRIZO:
case CHIP_STONEY:
case CHIP_POLARIS10:
case CHIP_POLARIS11:
case CHIP_POLARIS12:
case CHIP_VEGAM:
case CHIP_TONGA:
case CHIP_FIJI:
case CHIP_VEGA10:
case CHIP_VEGA12:
case CHIP_VEGA20:
#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
case CHIP_RAVEN:
#endif
return amdgpu_dc != 0;
#endif
default:
return false;
}
}
/**
* amdgpu_device_has_dc_support - check if dc is supported
*
* @adev: amdgpu_device_pointer
*
* Returns true for supported, false for not supported
*/
bool amdgpu_device_has_dc_support(struct amdgpu_device *adev)
{
if (amdgpu_sriov_vf(adev))
return false;
return amdgpu_device_asic_has_dc_support(adev->asic_type);
}
/**
* amdgpu_device_init - initialize the driver
*
* @adev: amdgpu_device pointer
* @ddev: drm dev pointer
* @pdev: pci dev pointer
* @flags: driver flags
*
* Initializes the driver info and hw (all asics).
* Returns 0 for success or an error on failure.
* Called at driver startup.
*/
int amdgpu_device_init(struct amdgpu_device *adev,
struct drm_device *ddev,
struct pci_dev *pdev,
uint32_t flags)
{
int r, i;
bool runtime = false;
u32 max_MBps;
adev->shutdown = false;
adev->dev = &pdev->dev;
adev->ddev = ddev;
adev->pdev = pdev;
adev->flags = flags;
adev->asic_type = flags & AMD_ASIC_MASK;
adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT;
if (amdgpu_emu_mode == 1)
adev->usec_timeout *= 2;
adev->gmc.gart_size = 512 * 1024 * 1024;
adev->accel_working = false;
adev->num_rings = 0;
adev->mman.buffer_funcs = NULL;
adev->mman.buffer_funcs_ring = NULL;
adev->vm_manager.vm_pte_funcs = NULL;
adev->vm_manager.vm_pte_num_rings = 0;
adev->gmc.gmc_funcs = NULL;
adev->fence_context = dma_fence_context_alloc(AMDGPU_MAX_RINGS);
bitmap_zero(adev->gfx.pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);
adev->smc_rreg = &amdgpu_invalid_rreg;
adev->smc_wreg = &amdgpu_invalid_wreg;
adev->pcie_rreg = &amdgpu_invalid_rreg;
adev->pcie_wreg = &amdgpu_invalid_wreg;
adev->pciep_rreg = &amdgpu_invalid_rreg;
adev->pciep_wreg = &amdgpu_invalid_wreg;
adev->uvd_ctx_rreg = &amdgpu_invalid_rreg;
adev->uvd_ctx_wreg = &amdgpu_invalid_wreg;
adev->didt_rreg = &amdgpu_invalid_rreg;
adev->didt_wreg = &amdgpu_invalid_wreg;
adev->gc_cac_rreg = &amdgpu_invalid_rreg;
adev->gc_cac_wreg = &amdgpu_invalid_wreg;
adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
/* mutex initialization are all done here so we
* can recall function without having locking issues */
atomic_set(&adev->irq.ih.lock, 0);
mutex_init(&adev->firmware.mutex);
mutex_init(&adev->pm.mutex);
mutex_init(&adev->gfx.gpu_clock_mutex);
mutex_init(&adev->srbm_mutex);
mutex_init(&adev->gfx.pipe_reserve_mutex);
mutex_init(&adev->grbm_idx_mutex);
mutex_init(&adev->mn_lock);
mutex_init(&adev->virt.vf_errors.lock);
hash_init(adev->mn_hash);
mutex_init(&adev->lock_reset);
amdgpu_device_check_arguments(adev);
spin_lock_init(&adev->mmio_idx_lock);
spin_lock_init(&adev->smc_idx_lock);
spin_lock_init(&adev->pcie_idx_lock);
spin_lock_init(&adev->uvd_ctx_idx_lock);
spin_lock_init(&adev->didt_idx_lock);
spin_lock_init(&adev->gc_cac_idx_lock);
spin_lock_init(&adev->se_cac_idx_lock);
spin_lock_init(&adev->audio_endpt_idx_lock);
spin_lock_init(&adev->mm_stats.lock);
INIT_LIST_HEAD(&adev->shadow_list);
mutex_init(&adev->shadow_list_lock);
INIT_LIST_HEAD(&adev->ring_lru_list);
spin_lock_init(&adev->ring_lru_list_lock);
INIT_DELAYED_WORK(&adev->late_init_work,
amdgpu_device_ip_late_init_func_handler);
adev->pm.ac_power = power_supply_is_system_supplied() > 0 ? true : false;
/* Registers mapping */
/* TODO: block userspace mapping of io register */
if (adev->asic_type >= CHIP_BONAIRE) {
adev->rmmio_base = pci_resource_start(adev->pdev, 5);
adev->rmmio_size = pci_resource_len(adev->pdev, 5);
} else {
adev->rmmio_base = pci_resource_start(adev->pdev, 2);
adev->rmmio_size = pci_resource_len(adev->pdev, 2);
}
adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size);
if (adev->rmmio == NULL) {
return -ENOMEM;
}
DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
/* doorbell bar mapping */
amdgpu_device_doorbell_init(adev);
/* io port mapping */
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) {
adev->rio_mem_size = pci_resource_len(adev->pdev, i);
adev->rio_mem = pci_iomap(adev->pdev, i, adev->rio_mem_size);
break;
}
}
if (adev->rio_mem == NULL)
DRM_INFO("PCI I/O BAR is not found.\n");
amdgpu_device_get_pcie_info(adev);
/* early init functions */
r = amdgpu_device_ip_early_init(adev);
if (r)
return r;
/* if we have > 1 VGA cards, then disable the amdgpu VGA resources */
/* this will fail for cards that aren't VGA class devices, just
* ignore it */
vga_client_register(adev->pdev, adev, NULL, amdgpu_device_vga_set_decode);
if (amdgpu_device_is_px(ddev))
runtime = true;
if (!pci_is_thunderbolt_attached(adev->pdev))
vga_switcheroo_register_client(adev->pdev,
&amdgpu_switcheroo_ops, runtime);
if (runtime)
vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
if (amdgpu_emu_mode == 1) {
/* post the asic on emulation mode */
emu_soc_asic_init(adev);
goto fence_driver_init;
}
/* Read BIOS */
if (!amdgpu_get_bios(adev)) {
r = -EINVAL;
goto failed;
}
r = amdgpu_atombios_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atombios_init failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
goto failed;
}
/* detect if we are with an SRIOV vbios */
amdgpu_device_detect_sriov_bios(adev);
/* Post card if necessary */
if (amdgpu_device_need_post(adev)) {
if (!adev->bios) {
dev_err(adev->dev, "no vBIOS found\n");
r = -EINVAL;
goto failed;
}
DRM_INFO("GPU posting now...\n");
r = amdgpu_atom_asic_init(adev->mode_info.atom_context);
if (r) {
dev_err(adev->dev, "gpu post error!\n");
goto failed;
}
}
if (adev->is_atom_fw) {
/* Initialize clocks */
r = amdgpu_atomfirmware_get_clock_info(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
goto failed;
}
} else {
/* Initialize clocks */
r = amdgpu_atombios_get_clock_info(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
goto failed;
}
/* init i2c buses */
if (!amdgpu_device_has_dc_support(adev))
amdgpu_atombios_i2c_init(adev);
}
fence_driver_init:
/* Fence driver */
r = amdgpu_fence_driver_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_fence_driver_init failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_FENCE_INIT_FAIL, 0, 0);
goto failed;
}
/* init the mode config */
drm_mode_config_init(adev->ddev);
r = amdgpu_device_ip_init(adev);
if (r) {
/* failed in exclusive mode due to timeout */
if (amdgpu_sriov_vf(adev) &&
!amdgpu_sriov_runtime(adev) &&
amdgpu_virt_mmio_blocked(adev) &&
!amdgpu_virt_wait_reset(adev)) {
dev_err(adev->dev, "VF exclusive mode timeout\n");
/* Don't send request since VF is inactive. */
adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
adev->virt.ops = NULL;
r = -EAGAIN;
goto failed;
}
dev_err(adev->dev, "amdgpu_device_ip_init failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_INIT_FAIL, 0, 0);
goto failed;
}
adev->accel_working = true;
amdgpu_vm_check_compute_bug(adev);
/* Initialize the buffer migration limit. */
if (amdgpu_moverate >= 0)
max_MBps = amdgpu_moverate;
else
max_MBps = 8; /* Allow 8 MB/s. */
/* Get a log2 for easy divisions. */
adev->mm_stats.log2_max_MBps = ilog2(max(1u, max_MBps));
r = amdgpu_ib_pool_init(adev);
if (r) {
dev_err(adev->dev, "IB initialization failed (%d).\n", r);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_IB_INIT_FAIL, 0, r);
goto failed;
}
amdgpu_fbdev_init(adev);
r = amdgpu_pm_sysfs_init(adev);
if (r)
DRM_ERROR("registering pm debugfs failed (%d).\n", r);
r = amdgpu_debugfs_gem_init(adev);
if (r)
DRM_ERROR("registering gem debugfs failed (%d).\n", r);
r = amdgpu_debugfs_regs_init(adev);
if (r)
DRM_ERROR("registering register debugfs failed (%d).\n", r);
r = amdgpu_debugfs_firmware_init(adev);
if (r)
DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
r = amdgpu_debugfs_init(adev);
if (r)
DRM_ERROR("Creating debugfs files failed (%d).\n", r);
if ((amdgpu_testing & 1)) {
if (adev->accel_working)
amdgpu_test_moves(adev);
else
DRM_INFO("amdgpu: acceleration disabled, skipping move tests\n");
}
if (amdgpu_benchmarking) {
if (adev->accel_working)
amdgpu_benchmark(adev, amdgpu_benchmarking);
else
DRM_INFO("amdgpu: acceleration disabled, skipping benchmarks\n");
}
/* enable clockgating, etc. after ib tests, etc. since some blocks require
* explicit gating rather than handling it automatically.
*/
r = amdgpu_device_ip_late_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_device_ip_late_init failed\n");
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_LATE_INIT_FAIL, 0, r);
goto failed;
}
return 0;
failed:
amdgpu_vf_error_trans_all(adev);
if (runtime)
vga_switcheroo_fini_domain_pm_ops(adev->dev);
return r;
}
/**
* amdgpu_device_fini - tear down the driver
*
* @adev: amdgpu_device pointer
*
* Tear down the driver info (all asics).
* Called at driver shutdown.
*/
void amdgpu_device_fini(struct amdgpu_device *adev)
{
int r;
DRM_INFO("amdgpu: finishing device.\n");
adev->shutdown = true;
/* disable all interrupts */
amdgpu_irq_disable_all(adev);
if (adev->mode_info.mode_config_initialized){
if (!amdgpu_device_has_dc_support(adev))
drm_crtc_force_disable_all(adev->ddev);
else
drm_atomic_helper_shutdown(adev->ddev);
}
amdgpu_ib_pool_fini(adev);
amdgpu_fence_driver_fini(adev);
amdgpu_pm_sysfs_fini(adev);
amdgpu_fbdev_fini(adev);
r = amdgpu_device_ip_fini(adev);
if (adev->firmware.gpu_info_fw) {
release_firmware(adev->firmware.gpu_info_fw);
adev->firmware.gpu_info_fw = NULL;
}
adev->accel_working = false;
cancel_delayed_work_sync(&adev->late_init_work);
/* free i2c buses */
if (!amdgpu_device_has_dc_support(adev))
amdgpu_i2c_fini(adev);
if (amdgpu_emu_mode != 1)
amdgpu_atombios_fini(adev);
kfree(adev->bios);
adev->bios = NULL;
if (!pci_is_thunderbolt_attached(adev->pdev))
vga_switcheroo_unregister_client(adev->pdev);
if (adev->flags & AMD_IS_PX)
vga_switcheroo_fini_domain_pm_ops(adev->dev);
vga_client_register(adev->pdev, NULL, NULL, NULL);
if (adev->rio_mem)
pci_iounmap(adev->pdev, adev->rio_mem);
adev->rio_mem = NULL;
iounmap(adev->rmmio);
adev->rmmio = NULL;
amdgpu_device_doorbell_fini(adev);
amdgpu_debugfs_regs_cleanup(adev);
}
/*
* Suspend & resume.
*/
/**
* amdgpu_device_suspend - initiate device suspend
*
* @dev: drm dev pointer
* @suspend: suspend state
* @fbcon : notify the fbdev of suspend
*
* Puts the hw in the suspend state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver suspend.
*/
int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
{
struct amdgpu_device *adev;
struct drm_crtc *crtc;
struct drm_connector *connector;
int r;
if (dev == NULL || dev->dev_private == NULL) {
return -ENODEV;
}
adev = dev->dev_private;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;
drm_kms_helper_poll_disable(dev);
if (fbcon)
amdgpu_fbdev_set_suspend(adev, 1);
if (!amdgpu_device_has_dc_support(adev)) {
/* turn off display hw */
drm_modeset_lock_all(dev);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
}
drm_modeset_unlock_all(dev);
/* unpin the front buffers and cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
struct drm_framebuffer *fb = crtc->primary->fb;
struct amdgpu_bo *robj;
if (amdgpu_crtc->cursor_bo) {
struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
r = amdgpu_bo_reserve(aobj, true);
if (r == 0) {
amdgpu_bo_unpin(aobj);
amdgpu_bo_unreserve(aobj);
}
}
if (fb == NULL || fb->obj[0] == NULL) {
continue;
}
robj = gem_to_amdgpu_bo(fb->obj[0]);
/* don't unpin kernel fb objects */
if (!amdgpu_fbdev_robj_is_fb(adev, robj)) {
r = amdgpu_bo_reserve(robj, true);
if (r == 0) {
amdgpu_bo_unpin(robj);
amdgpu_bo_unreserve(robj);
}
}
}
}
amdgpu_amdkfd_suspend(adev);
r = amdgpu_device_ip_suspend_phase1(adev);
/* evict vram memory */
amdgpu_bo_evict_vram(adev);
amdgpu_fence_driver_suspend(adev);
r = amdgpu_device_ip_suspend_phase2(adev);
/* evict remaining vram memory
* This second call to evict vram is to evict the gart page table
* using the CPU.
*/
amdgpu_bo_evict_vram(adev);
pci_save_state(dev->pdev);
if (suspend) {
/* Shut down the device */
pci_disable_device(dev->pdev);
pci_set_power_state(dev->pdev, PCI_D3hot);
} else {
r = amdgpu_asic_reset(adev);
if (r)
DRM_ERROR("amdgpu asic reset failed\n");
}
return 0;
}
/**
* amdgpu_device_resume - initiate device resume
*
* @dev: drm dev pointer
* @resume: resume state
* @fbcon : notify the fbdev of resume
*
* Bring the hw back to operating state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver resume.
*/
int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
{
struct drm_connector *connector;
struct amdgpu_device *adev = dev->dev_private;
struct drm_crtc *crtc;
int r = 0;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;
if (resume) {
pci_set_power_state(dev->pdev, PCI_D0);
pci_restore_state(dev->pdev);
r = pci_enable_device(dev->pdev);
if (r)
return r;
}
/* post card */
if (amdgpu_device_need_post(adev)) {
r = amdgpu_atom_asic_init(adev->mode_info.atom_context);
if (r)
DRM_ERROR("amdgpu asic init failed\n");
}
r = amdgpu_device_ip_resume(adev);
if (r) {
DRM_ERROR("amdgpu_device_ip_resume failed (%d).\n", r);
return r;
}
amdgpu_fence_driver_resume(adev);
r = amdgpu_device_ip_late_init(adev);
if (r)
return r;
if (!amdgpu_device_has_dc_support(adev)) {
/* pin cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
if (amdgpu_crtc->cursor_bo) {
struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
r = amdgpu_bo_reserve(aobj, true);
if (r == 0) {
r = amdgpu_bo_pin(aobj, AMDGPU_GEM_DOMAIN_VRAM);
if (r != 0)
DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
amdgpu_crtc->cursor_addr = amdgpu_bo_gpu_offset(aobj);
amdgpu_bo_unreserve(aobj);
}
}
}
}
r = amdgpu_amdkfd_resume(adev);
if (r)
return r;
/* Make sure IB tests flushed */
flush_delayed_work(&adev->late_init_work);
/* blat the mode back in */
if (fbcon) {
if (!amdgpu_device_has_dc_support(adev)) {
/* pre DCE11 */
drm_helper_resume_force_mode(dev);
/* turn on display hw */
drm_modeset_lock_all(dev);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
}
drm_modeset_unlock_all(dev);
}
amdgpu_fbdev_set_suspend(adev, 0);
}
drm_kms_helper_poll_enable(dev);
/*
* Most of the connector probing functions try to acquire runtime pm
* refs to ensure that the GPU is powered on when connector polling is
* performed. Since we're calling this from a runtime PM callback,
* trying to acquire rpm refs will cause us to deadlock.
*
* Since we're guaranteed to be holding the rpm lock, it's safe to
* temporarily disable the rpm helpers so this doesn't deadlock us.
*/
#ifdef CONFIG_PM
dev->dev->power.disable_depth++;
#endif
if (!amdgpu_device_has_dc_support(adev))
drm_helper_hpd_irq_event(dev);
else
drm_kms_helper_hotplug_event(dev);
#ifdef CONFIG_PM
dev->dev->power.disable_depth--;
#endif
return 0;
}
/**
* amdgpu_device_ip_check_soft_reset - did soft reset succeed
*
* @adev: amdgpu_device pointer
*
* The list of all the hardware IPs that make up the asic is walked and
* the check_soft_reset callbacks are run. check_soft_reset determines
* if the asic is still hung or not.
* Returns true if any of the IPs are still in a hung state, false if not.
*/
static bool amdgpu_device_ip_check_soft_reset(struct amdgpu_device *adev)
{
int i;
bool asic_hang = false;
if (amdgpu_sriov_vf(adev))
return true;
if (amdgpu_asic_need_full_reset(adev))
return true;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->funcs->check_soft_reset)
adev->ip_blocks[i].status.hang =
adev->ip_blocks[i].version->funcs->check_soft_reset(adev);
if (adev->ip_blocks[i].status.hang) {
DRM_INFO("IP block:%s is hung!\n", adev->ip_blocks[i].version->funcs->name);
asic_hang = true;
}
}
return asic_hang;
}
/**
* amdgpu_device_ip_pre_soft_reset - prepare for soft reset
*
* @adev: amdgpu_device pointer
*
* The list of all the hardware IPs that make up the asic is walked and the
* pre_soft_reset callbacks are run if the block is hung. pre_soft_reset
* handles any IP specific hardware or software state changes that are
* necessary for a soft reset to succeed.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_pre_soft_reset(struct amdgpu_device *adev)
{
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].status.hang &&
adev->ip_blocks[i].version->funcs->pre_soft_reset) {
r = adev->ip_blocks[i].version->funcs->pre_soft_reset(adev);
if (r)
return r;
}
}
return 0;
}
/**
* amdgpu_device_ip_need_full_reset - check if a full asic reset is needed
*
* @adev: amdgpu_device pointer
*
* Some hardware IPs cannot be soft reset. If they are hung, a full gpu
* reset is necessary to recover.
* Returns true if a full asic reset is required, false if not.
*/
static bool amdgpu_device_ip_need_full_reset(struct amdgpu_device *adev)
{
int i;
if (amdgpu_asic_need_full_reset(adev))
return true;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if ((adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) ||
(adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) ||
(adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_ACP) ||
(adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) {
if (adev->ip_blocks[i].status.hang) {
DRM_INFO("Some block need full reset!\n");
return true;
}
}
}
return false;
}
/**
* amdgpu_device_ip_soft_reset - do a soft reset
*
* @adev: amdgpu_device pointer
*
* The list of all the hardware IPs that make up the asic is walked and the
* soft_reset callbacks are run if the block is hung. soft_reset handles any
* IP specific hardware or software state changes that are necessary to soft
* reset the IP.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_soft_reset(struct amdgpu_device *adev)
{
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].status.hang &&
adev->ip_blocks[i].version->funcs->soft_reset) {
r = adev->ip_blocks[i].version->funcs->soft_reset(adev);
if (r)
return r;
}
}
return 0;
}
/**
* amdgpu_device_ip_post_soft_reset - clean up from soft reset
*
* @adev: amdgpu_device pointer
*
* The list of all the hardware IPs that make up the asic is walked and the
* post_soft_reset callbacks are run if the asic was hung. post_soft_reset
* handles any IP specific hardware or software state changes that are
* necessary after the IP has been soft reset.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_ip_post_soft_reset(struct amdgpu_device *adev)
{
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].status.hang &&
adev->ip_blocks[i].version->funcs->post_soft_reset)
r = adev->ip_blocks[i].version->funcs->post_soft_reset(adev);
if (r)
return r;
}
return 0;
}
/**
* amdgpu_device_recover_vram_from_shadow - restore shadowed VRAM buffers
*
* @adev: amdgpu_device pointer
* @ring: amdgpu_ring for the engine handling the buffer operations
* @bo: amdgpu_bo buffer whose shadow is being restored
* @fence: dma_fence associated with the operation
*
* Restores the VRAM buffer contents from the shadow in GTT. Used to
* restore things like GPUVM page tables after a GPU reset where
* the contents of VRAM might be lost.
* Returns 0 on success, negative error code on failure.
*/
static int amdgpu_device_recover_vram_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,
struct dma_fence **fence)
{
uint32_t domain;
int r;
if (!bo->shadow)
return 0;
r = amdgpu_bo_reserve(bo, true);
if (r)
return r;
domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
/* if bo has been evicted, then no need to recover */
if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
r = amdgpu_bo_validate(bo->shadow);
if (r) {
DRM_ERROR("bo validate failed!\n");
goto err;
}
r = amdgpu_bo_restore_from_shadow(adev, ring, bo,
NULL, fence, true);
if (r) {
DRM_ERROR("recover page table failed!\n");
goto err;
}
}
err:
amdgpu_bo_unreserve(bo);
return r;
}
/**
* amdgpu_device_handle_vram_lost - Handle the loss of VRAM contents
*
* @adev: amdgpu_device pointer
*
* Restores the contents of VRAM buffers from the shadows in GTT. Used to
* restore things like GPUVM page tables after a GPU reset where
* the contents of VRAM might be lost.
* Returns 0 on success, 1 on failure.
*/
static int amdgpu_device_handle_vram_lost(struct amdgpu_device *adev)
{
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
struct amdgpu_bo *bo, *tmp;
struct dma_fence *fence = NULL, *next = NULL;
long r = 1;
int i = 0;
long tmo;
if (amdgpu_sriov_runtime(adev))
tmo = msecs_to_jiffies(8000);
else
tmo = msecs_to_jiffies(100);
DRM_INFO("recover vram bo from shadow start\n");
mutex_lock(&adev->shadow_list_lock);
list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) {
next = NULL;
amdgpu_device_recover_vram_from_shadow(adev, ring, bo, &next);
if (fence) {
r = dma_fence_wait_timeout(fence, false, tmo);
if (r == 0)
pr_err("wait fence %p[%d] timeout\n", fence, i);
else if (r < 0)
pr_err("wait fence %p[%d] interrupted\n", fence, i);
if (r < 1) {
dma_fence_put(fence);
fence = next;
break;
}
i++;
}
dma_fence_put(fence);
fence = next;
}
mutex_unlock(&adev->shadow_list_lock);
if (fence) {
r = dma_fence_wait_timeout(fence, false, tmo);
if (r == 0)
pr_err("wait fence %p[%d] timeout\n", fence, i);
else if (r < 0)
pr_err("wait fence %p[%d] interrupted\n", fence, i);
}
dma_fence_put(fence);
if (r > 0)
DRM_INFO("recover vram bo from shadow done\n");
else
DRM_ERROR("recover vram bo from shadow failed\n");
return (r > 0) ? 0 : 1;
}
/**
* amdgpu_device_reset - reset ASIC/GPU for bare-metal or passthrough
*
* @adev: amdgpu device pointer
*
* attempt to do soft-reset or full-reset and reinitialize Asic
* return 0 means succeeded otherwise failed
*/
static int amdgpu_device_reset(struct amdgpu_device *adev)
{
bool need_full_reset, vram_lost = 0;
int r;
need_full_reset = amdgpu_device_ip_need_full_reset(adev);
if (!need_full_reset) {
amdgpu_device_ip_pre_soft_reset(adev);
r = amdgpu_device_ip_soft_reset(adev);
amdgpu_device_ip_post_soft_reset(adev);
if (r || amdgpu_device_ip_check_soft_reset(adev)) {
DRM_INFO("soft reset failed, will fallback to full reset!\n");
need_full_reset = true;
}
}
if (need_full_reset) {
r = amdgpu_device_ip_suspend(adev);
retry:
r = amdgpu_asic_reset(adev);
/* post card */
amdgpu_atom_asic_init(adev->mode_info.atom_context);
if (!r) {
dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
r = amdgpu_device_ip_resume_phase1(adev);
if (r)
goto out;
vram_lost = amdgpu_device_check_vram_lost(adev);
if (vram_lost) {
DRM_ERROR("VRAM is lost!\n");
atomic_inc(&adev->vram_lost_counter);
}
r = amdgpu_gtt_mgr_recover(
&adev->mman.bdev.man[TTM_PL_TT]);
if (r)
goto out;
r = amdgpu_device_ip_resume_phase2(adev);
if (r)
goto out;
if (vram_lost)
amdgpu_device_fill_reset_magic(adev);
}
}
out:
if (!r) {
amdgpu_irq_gpu_reset_resume_helper(adev);
r = amdgpu_ib_ring_tests(adev);
if (r) {
dev_err(adev->dev, "ib ring test failed (%d).\n", r);
r = amdgpu_device_ip_suspend(adev);
need_full_reset = true;
goto retry;
}
}
if (!r && ((need_full_reset && !(adev->flags & AMD_IS_APU)) || vram_lost))
r = amdgpu_device_handle_vram_lost(adev);
return r;
}
/**
* amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf
*
* @adev: amdgpu device pointer
* @from_hypervisor: request from hypervisor
*
* do VF FLR and reinitialize Asic
* return 0 means succeeded otherwise failed
*/
static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
bool from_hypervisor)
{
int r;
if (from_hypervisor)
r = amdgpu_virt_request_full_gpu(adev, true);
else
r = amdgpu_virt_reset_gpu(adev);
if (r)
return r;
/* Resume IP prior to SMC */
r = amdgpu_device_ip_reinit_early_sriov(adev);
if (r)
goto error;
/* we need recover gart prior to run SMC/CP/SDMA resume */
amdgpu_gtt_mgr_recover(&adev->mman.bdev.man[TTM_PL_TT]);
/* now we are okay to resume SMC/CP/SDMA */
r = amdgpu_device_ip_reinit_late_sriov(adev);
if (r)
goto error;
amdgpu_irq_gpu_reset_resume_helper(adev);
r = amdgpu_ib_ring_tests(adev);
error:
amdgpu_virt_init_data_exchange(adev);
amdgpu_virt_release_full_gpu(adev, true);
if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
atomic_inc(&adev->vram_lost_counter);
r = amdgpu_device_handle_vram_lost(adev);
}
return r;
}
/**
* amdgpu_device_gpu_recover - reset the asic and recover scheduler
*
* @adev: amdgpu device pointer
* @job: which job trigger hang
* @force: forces reset regardless of amdgpu_gpu_recovery
*
* Attempt to reset the GPU if it has hung (all asics).
* Returns 0 for success or an error on failure.
*/
int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
struct amdgpu_job *job, bool force)
{
int i, r, resched;
if (!force && !amdgpu_device_ip_check_soft_reset(adev)) {
DRM_INFO("No hardware hang detected. Did some blocks stall?\n");
return 0;
}
if (!force && (amdgpu_gpu_recovery == 0 ||
(amdgpu_gpu_recovery == -1 && !amdgpu_sriov_vf(adev)))) {
DRM_INFO("GPU recovery disabled.\n");
return 0;
}
dev_info(adev->dev, "GPU reset begin!\n");
mutex_lock(&adev->lock_reset);
atomic_inc(&adev->gpu_reset_counter);
adev->in_gpu_reset = 1;
/* Block kfd */
amdgpu_amdkfd_pre_reset(adev);
/* block TTM */
resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
/* block all schedulers and reset given job's ring */
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
if (!ring || !ring->sched.thread)
continue;
kthread_park(ring->sched.thread);
if (job && job->base.sched == &ring->sched)
continue;
drm_sched_hw_job_reset(&ring->sched, job ? &job->base : NULL);
/* after all hw jobs are reset, hw fence is meaningless, so force_completion */
amdgpu_fence_driver_force_completion(ring);
}
if (amdgpu_sriov_vf(adev))
r = amdgpu_device_reset_sriov(adev, job ? false : true);
else
r = amdgpu_device_reset(adev);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
if (!ring || !ring->sched.thread)
continue;
/* only need recovery sched of the given job's ring
* or all rings (in the case @job is NULL)
* after above amdgpu_reset accomplished
*/
if ((!job || job->base.sched == &ring->sched) && !r)
drm_sched_job_recovery(&ring->sched);
kthread_unpark(ring->sched.thread);
}
if (!amdgpu_device_has_dc_support(adev)) {
drm_helper_resume_force_mode(adev->ddev);
}
ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
if (r) {
/* bad news, how to tell it to userspace ? */
dev_info(adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter));
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
} else {
dev_info(adev->dev, "GPU reset(%d) succeeded!\n",atomic_read(&adev->gpu_reset_counter));
}
/*unlock kfd */
amdgpu_amdkfd_post_reset(adev);
amdgpu_vf_error_trans_all(adev);
adev->in_gpu_reset = 0;
mutex_unlock(&adev->lock_reset);
return r;
}
/**
* amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot
*
* @adev: amdgpu_device pointer
*
* Fetchs and stores in the driver the PCIE capabilities (gen speed
* and lanes) of the slot the device is in. Handles APUs and
* virtualized environments where PCIE config space may not be available.
*/
static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev)
{
struct pci_dev *pdev;
enum pci_bus_speed speed_cap;
enum pcie_link_width link_width;
if (amdgpu_pcie_gen_cap)
adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap;
if (amdgpu_pcie_lane_cap)
adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap;
/* covers APUs as well */
if (pci_is_root_bus(adev->pdev->bus)) {
if (adev->pm.pcie_gen_mask == 0)
adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
if (adev->pm.pcie_mlw_mask == 0)
adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
return;
}
if (adev->pm.pcie_gen_mask == 0) {
/* asic caps */
pdev = adev->pdev;
speed_cap = pcie_get_speed_cap(pdev);
if (speed_cap == PCI_SPEED_UNKNOWN) {
adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
} else {
if (speed_cap == PCIE_SPEED_16_0GT)
adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4);
else if (speed_cap == PCIE_SPEED_8_0GT)
adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
else if (speed_cap == PCIE_SPEED_5_0GT)
adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2);
else
adev->pm.pcie_gen_mask |= CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1;
}
/* platform caps */
pdev = adev->ddev->pdev->bus->self;
speed_cap = pcie_get_speed_cap(pdev);
if (speed_cap == PCI_SPEED_UNKNOWN) {
adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2);
} else {
if (speed_cap == PCIE_SPEED_16_0GT)
adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4);
else if (speed_cap == PCIE_SPEED_8_0GT)
adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3);
else if (speed_cap == PCIE_SPEED_5_0GT)
adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2);
else
adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1;
}
}
if (adev->pm.pcie_mlw_mask == 0) {
pdev = adev->ddev->pdev->bus->self;
link_width = pcie_get_width_cap(pdev);
if (link_width == PCIE_LNK_WIDTH_UNKNOWN) {
adev->pm.pcie_mlw_mask |= AMDGPU_DEFAULT_PCIE_MLW_MASK;
} else {
switch (link_width) {
case PCIE_LNK_X32:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X16:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X12:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X8:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X4:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X2:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case PCIE_LNK_X1:
adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1;
break;
default:
break;
}
}
}
}
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