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rga_mm.c
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rga_mm.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Rockchip Electronics Co., Ltd.
*
* Author: Cerf Yu <cerf.yu@rock-chips.com>
*/
#define pr_fmt(fmt) "rga_mm: " fmt
#include "rga.h"
#include "rga_job.h"
#include "rga_mm.h"
#include "rga_dma_buf.h"
#include "rga_common.h"
#include "rga_iommu.h"
#include "rga_hw_config.h"
#include "rga_debugger.h"
static void rga_current_mm_read_lock(struct mm_struct *mm)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
mmap_read_lock(mm);
#else
down_read(&mm->mmap_sem);
#endif
}
static void rga_current_mm_read_unlock(struct mm_struct *mm)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
mmap_read_unlock(mm);
#else
up_read(&mm->mmap_sem);
#endif
}
static int rga_get_user_pages_from_vma(struct page **pages, unsigned long Memory,
uint32_t pageCount, struct mm_struct *current_mm)
{
int ret = 0;
int i;
struct vm_area_struct *vma;
spinlock_t *ptl;
pte_t *pte;
pgd_t *pgd;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
p4d_t *p4d;
#endif
pud_t *pud;
pmd_t *pmd;
unsigned long pfn;
for (i = 0; i < pageCount; i++) {
vma = find_vma(current_mm, (Memory + i) << PAGE_SHIFT);
if (!vma) {
pr_err("failed to get vma\n");
ret = RGA_OUT_OF_RESOURCES;
break;
}
pgd = pgd_offset(current_mm, (Memory + i) << PAGE_SHIFT);
if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd))) {
pr_err("failed to get pgd\n");
ret = RGA_OUT_OF_RESOURCES;
break;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
/*
* In the four-level page table,
* it will do nothing and return pgd.
*/
p4d = p4d_offset(pgd, (Memory + i) << PAGE_SHIFT);
if (p4d_none(*p4d) || unlikely(p4d_bad(*p4d))) {
pr_err("failed to get p4d\n");
ret = RGA_OUT_OF_RESOURCES;
break;
}
pud = pud_offset(p4d, (Memory + i) << PAGE_SHIFT);
#else
pud = pud_offset(pgd, (Memory + i) << PAGE_SHIFT);
#endif
if (pud_none(*pud) || unlikely(pud_bad(*pud))) {
pr_err("failed to get pud\n");
ret = RGA_OUT_OF_RESOURCES;
break;
}
pmd = pmd_offset(pud, (Memory + i) << PAGE_SHIFT);
if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd))) {
pr_err("failed to get pmd\n");
ret = RGA_OUT_OF_RESOURCES;
break;
}
pte = pte_offset_map_lock(current_mm, pmd,
(Memory + i) << PAGE_SHIFT, &ptl);
if (pte_none(*pte)) {
pr_err("failed to get pte\n");
pte_unmap_unlock(pte, ptl);
ret = RGA_OUT_OF_RESOURCES;
break;
}
pfn = pte_pfn(*pte);
pages[i] = pfn_to_page(pfn);
pte_unmap_unlock(pte, ptl);
}
return ret;
}
static int rga_get_user_pages(struct page **pages, unsigned long Memory,
uint32_t pageCount, int writeFlag,
struct mm_struct *current_mm)
{
uint32_t i;
int32_t ret = 0;
int32_t result;
rga_current_mm_read_lock(current_mm);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 168) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
result = get_user_pages(current, current_mm, Memory << PAGE_SHIFT,
pageCount, writeFlag ? FOLL_WRITE : 0,
pages, NULL);
#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
result = get_user_pages(current, current_mm, Memory << PAGE_SHIFT,
pageCount, writeFlag ? FOLL_WRITE : 0, 0, pages, NULL);
#elif LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
result = get_user_pages_remote(current, current_mm,
Memory << PAGE_SHIFT,
pageCount, writeFlag ? FOLL_WRITE : 0, pages, NULL, NULL);
#else
result = get_user_pages_remote(current_mm, Memory << PAGE_SHIFT,
pageCount, writeFlag ? FOLL_WRITE : 0, pages, NULL, NULL);
#endif
if (result > 0 && result >= pageCount) {
ret = result;
} else {
if (result > 0)
for (i = 0; i < result; i++)
put_page(pages[i]);
ret = rga_get_user_pages_from_vma(pages, Memory, pageCount, current_mm);
if (ret < 0) {
pr_err("Can not get user pages from vma, result = %d, pagecount = %d\n",
result, pageCount);
}
}
rga_current_mm_read_unlock(current_mm);
return ret;
}
static void rga_free_sgt(struct sg_table **sgt_ptr)
{
if (sgt_ptr == NULL || *sgt_ptr == NULL)
return;
sg_free_table(*sgt_ptr);
kfree(*sgt_ptr);
*sgt_ptr = NULL;
}
static struct sg_table *rga_alloc_sgt(struct rga_virt_addr *virt_addr)
{
int ret;
struct sg_table *sgt = NULL;
sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
if (sgt == NULL) {
pr_err("%s alloc sgt error!\n", __func__);
return ERR_PTR(-ENOMEM);
}
/* get sg form pages. */
ret = sg_alloc_table_from_pages(sgt, virt_addr->pages,
virt_addr->page_count,
0, virt_addr->size,
GFP_KERNEL);
if (ret) {
pr_err("sg_alloc_table_from_pages failed");
goto out_free_sgt;
}
return sgt;
out_free_sgt:
kfree(sgt);
return ERR_PTR(ret);
}
static void rga_free_virt_addr(struct rga_virt_addr **virt_addr_p)
{
int i;
struct rga_virt_addr *virt_addr = NULL;
if (virt_addr_p == NULL)
return;
virt_addr = *virt_addr_p;
if (virt_addr == NULL)
return;
for (i = 0; i < virt_addr->result; i++)
put_page(virt_addr->pages[i]);
free_pages((unsigned long)virt_addr->pages, virt_addr->pages_order);
kfree(virt_addr);
*virt_addr_p = NULL;
}
static int rga_alloc_virt_addr(struct rga_virt_addr **virt_addr_p,
uint64_t viraddr,
struct rga_memory_parm *memory_parm,
int writeFlag,
struct mm_struct *mm)
{
int i;
int ret;
int result = 0;
int order;
unsigned int count;
int img_size;
size_t offset;
unsigned long size;
struct page **pages = NULL;
struct rga_virt_addr *virt_addr = NULL;
if (memory_parm->size)
img_size = memory_parm->size;
else
img_size = rga_image_size_cal(memory_parm->width,
memory_parm->height,
memory_parm->format,
NULL, NULL, NULL);
offset = viraddr & (~PAGE_MASK);
count = RGA_GET_PAGE_COUNT(img_size + offset);
size = count * PAGE_SIZE;
if (!size) {
pr_err("failed to calculating buffer size! size = %ld, count = %d, offset = %ld\n",
size, count, (unsigned long)offset);
return -EFAULT;
}
/* alloc pages and page_table */
order = get_order(count * sizeof(struct page *));
pages = (struct page **)__get_free_pages(GFP_KERNEL, order);
if (pages == NULL) {
pr_err("%s can not alloc pages for pages\n", __func__);
return -ENOMEM;
}
/* get pages from virtual address. */
ret = rga_get_user_pages(pages, viraddr >> PAGE_SHIFT, count, writeFlag, mm);
if (ret < 0) {
pr_err("failed to get pages");
ret = -EINVAL;
goto out_free_pages;
} else if (ret > 0) {
/* For put pages */
result = ret;
}
*virt_addr_p = kzalloc(sizeof(struct rga_virt_addr), GFP_KERNEL);
if (*virt_addr_p == NULL) {
pr_err("%s alloc virt_addr error!\n", __func__);
ret = -ENOMEM;
goto out_put_and_free_pages;
}
virt_addr = *virt_addr_p;
virt_addr->addr = viraddr;
virt_addr->pages = pages;
virt_addr->pages_order = order;
virt_addr->page_count = count;
virt_addr->size = size;
virt_addr->offset = offset;
virt_addr->result = result;
return 0;
out_put_and_free_pages:
for (i = 0; i < result; i++)
put_page(pages[i]);
out_free_pages:
free_pages((unsigned long)pages, order);
return ret;
}
static inline bool rga_mm_check_memory_limit(struct rga_scheduler_t *scheduler, int mm_flag)
{
if (!scheduler)
return false;
if (scheduler->data->mmu == RGA_MMU &&
!(mm_flag & RGA_MEM_UNDER_4G)) {
pr_err("%s unsupported Memory larger than 4G!\n",
rga_get_mmu_type_str(scheduler->data->mmu));
return false;
}
return true;
}
/* If it is within 0~4G, return 1 (true). */
static int rga_mm_check_range_sgt(struct sg_table *sgt)
{
int i;
struct scatterlist *sg;
phys_addr_t s_phys = 0;
for_each_sg(sgt->sgl, sg, sgt->orig_nents, i) {
s_phys = sg_phys(sg);
if ((s_phys > 0xffffffff) || (s_phys + sg->length > 0xffffffff))
return 0;
}
return 1;
}
static inline int rga_mm_check_range_phys_addr(phys_addr_t paddr, size_t size)
{
return ((paddr + size) <= 0xffffffff);
}
static inline bool rga_mm_check_contiguous_sgt(struct sg_table *sgt)
{
if (sgt->orig_nents == 1)
return true;
return false;
}
static void rga_mm_unmap_dma_buffer(struct rga_internal_buffer *internal_buffer)
{
if (rga_mm_is_invalid_dma_buffer(internal_buffer->dma_buffer))
return;
rga_dma_unmap_buf(internal_buffer->dma_buffer);
if (internal_buffer->mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS &&
internal_buffer->phys_addr > 0)
internal_buffer->phys_addr = 0;
kfree(internal_buffer->dma_buffer);
internal_buffer->dma_buffer = NULL;
}
static int rga_mm_map_dma_buffer(struct rga_external_buffer *external_buffer,
struct rga_internal_buffer *internal_buffer,
struct rga_job *job)
{
int ret;
uint32_t mm_flag = 0;
phys_addr_t phys_addr = 0;
struct rga_dma_buffer *buffer;
struct device *map_dev;
struct rga_scheduler_t *scheduler;
scheduler = job ? job->scheduler :
rga_drvdata->scheduler[rga_drvdata->map_scheduler_index];
if (scheduler == NULL) {
pr_err("Invalid scheduler device!\n");
return -EINVAL;
}
/*
* dma-buf api needs to use default_domain of main dev,
* and not IOMMU for devices without iommu_info ptr.
*/
map_dev = scheduler->iommu_info ? scheduler->iommu_info->default_dev : scheduler->dev;
buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
if (buffer == NULL) {
pr_err("%s alloc internal_buffer error!\n", __func__);
return -ENOMEM;
}
switch (external_buffer->type) {
case RGA_DMA_BUFFER:
ret = rga_dma_map_fd((int)external_buffer->memory,
buffer, DMA_BIDIRECTIONAL,
map_dev);
break;
case RGA_DMA_BUFFER_PTR:
ret = rga_dma_map_buf((struct dma_buf *)u64_to_user_ptr(external_buffer->memory),
buffer, DMA_BIDIRECTIONAL,
map_dev);
break;
default:
ret = -EFAULT;
break;
}
if (ret < 0) {
pr_err("%s core[%d] map dma buffer error!\n",
__func__, scheduler->core);
goto free_buffer;
}
buffer->scheduler = scheduler;
if (rga_mm_check_range_sgt(buffer->sgt))
mm_flag |= RGA_MEM_UNDER_4G;
/*
* If it's physically contiguous, then the RGA_MMU can
* directly use the physical address.
*/
if (rga_mm_check_contiguous_sgt(buffer->sgt)) {
phys_addr = sg_phys(buffer->sgt->sgl);
if (phys_addr == 0) {
pr_err("%s get physical address error!", __func__);
goto unmap_buffer;
}
mm_flag |= RGA_MEM_PHYSICAL_CONTIGUOUS;
}
if (!rga_mm_check_memory_limit(scheduler, mm_flag)) {
pr_err("scheduler core[%d] unsupported mm_flag[0x%x]!\n",
scheduler->core, mm_flag);
ret = -EINVAL;
goto unmap_buffer;
}
internal_buffer->dma_buffer = buffer;
internal_buffer->mm_flag = mm_flag;
internal_buffer->phys_addr = phys_addr ? phys_addr : 0;
return 0;
unmap_buffer:
rga_dma_unmap_buf(buffer);
free_buffer:
kfree(buffer);
return ret;
}
static void rga_mm_unmap_virt_addr(struct rga_internal_buffer *internal_buffer)
{
WARN_ON(internal_buffer->dma_buffer == NULL || internal_buffer->virt_addr == NULL);
if (rga_mm_is_invalid_dma_buffer(internal_buffer->dma_buffer))
return;
switch (internal_buffer->dma_buffer->scheduler->data->mmu) {
case RGA_IOMMU:
rga_iommu_unmap(internal_buffer->dma_buffer);
break;
case RGA_MMU:
dma_unmap_sg(internal_buffer->dma_buffer->scheduler->dev,
internal_buffer->dma_buffer->sgt->sgl,
internal_buffer->dma_buffer->sgt->orig_nents,
DMA_BIDIRECTIONAL);
break;
default:
break;
}
if (internal_buffer->mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS &&
internal_buffer->phys_addr > 0)
internal_buffer->phys_addr = 0;
rga_free_sgt(&internal_buffer->dma_buffer->sgt);
kfree(internal_buffer->dma_buffer);
internal_buffer->dma_buffer = NULL;
rga_free_virt_addr(&internal_buffer->virt_addr);
mmput(internal_buffer->current_mm);
mmdrop(internal_buffer->current_mm);
internal_buffer->current_mm = NULL;
}
static int rga_mm_map_virt_addr(struct rga_external_buffer *external_buffer,
struct rga_internal_buffer *internal_buffer,
struct rga_job *job, int write_flag)
{
int ret;
uint32_t mm_flag = 0;
phys_addr_t phys_addr = 0;
struct sg_table *sgt;
struct rga_virt_addr *virt_addr;
struct rga_dma_buffer *buffer;
struct rga_scheduler_t *scheduler;
scheduler = job ? job->scheduler :
rga_drvdata->scheduler[rga_drvdata->map_scheduler_index];
if (scheduler == NULL) {
pr_err("Invalid scheduler device!\n");
return -EINVAL;
}
internal_buffer->current_mm = job ? job->mm : current->mm;
if (internal_buffer->current_mm == NULL) {
pr_err("%s, cannot get current mm!\n", __func__);
return -EFAULT;
}
mmgrab(internal_buffer->current_mm);
mmget(internal_buffer->current_mm);
ret = rga_alloc_virt_addr(&virt_addr,
external_buffer->memory,
&internal_buffer->memory_parm,
write_flag, internal_buffer->current_mm);
if (ret < 0) {
pr_err("Can not alloc rga_virt_addr from 0x%lx\n",
(unsigned long)external_buffer->memory);
goto put_current_mm;
}
sgt = rga_alloc_sgt(virt_addr);
if (IS_ERR(sgt)) {
pr_err("alloc sgt error!\n");
ret = PTR_ERR(sgt);
goto free_virt_addr;
}
if (rga_mm_check_range_sgt(sgt))
mm_flag |= RGA_MEM_UNDER_4G;
if (rga_mm_check_contiguous_sgt(sgt)) {
phys_addr = sg_phys(sgt->sgl);
if (phys_addr == 0) {
pr_err("%s get physical address error!", __func__);
goto free_sgt;
}
mm_flag |= RGA_MEM_PHYSICAL_CONTIGUOUS;
}
if (!rga_mm_check_memory_limit(scheduler, mm_flag)) {
pr_err("scheduler core[%d] unsupported mm_flag[0x%x]!\n",
scheduler->core, mm_flag);
ret = -EINVAL;
goto free_sgt;
}
buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
if (buffer == NULL) {
pr_err("%s alloc internal dma_buffer error!\n", __func__);
ret = -ENOMEM;
goto free_sgt;
}
switch (scheduler->data->mmu) {
case RGA_IOMMU:
ret = rga_iommu_map_sgt(sgt, virt_addr->size, buffer, scheduler->dev);
if (ret < 0) {
pr_err("%s core[%d] iommu_map virtual address error!\n",
__func__, scheduler->core);
goto free_dma_buffer;
}
break;
case RGA_MMU:
ret = dma_map_sg(scheduler->dev, sgt->sgl, sgt->orig_nents, DMA_BIDIRECTIONAL);
if (ret == 0) {
pr_err("%s core[%d] dma_map_sgt error! va = 0x%lx, nents = %d\n",
__func__, scheduler->core,
(unsigned long)virt_addr->addr, sgt->orig_nents);
ret = -EINVAL;
goto free_dma_buffer;
}
break;
default:
if (mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS)
break;
pr_err("Current RGA mmu[%d] cannot support virtual address!\n",
scheduler->data->mmu);
goto free_dma_buffer;
}
buffer->sgt = sgt;
buffer->offset = virt_addr->offset;
buffer->size = virt_addr->size;
buffer->scheduler = scheduler;
internal_buffer->virt_addr = virt_addr;
internal_buffer->dma_buffer = buffer;
internal_buffer->mm_flag = mm_flag;
internal_buffer->phys_addr = phys_addr ? phys_addr : 0;
return 0;
free_dma_buffer:
kfree(buffer);
free_sgt:
rga_free_sgt(&sgt);
free_virt_addr:
rga_free_virt_addr(&virt_addr);
put_current_mm:
mmput(internal_buffer->current_mm);
mmdrop(internal_buffer->current_mm);
internal_buffer->current_mm = NULL;
return ret;
}
static void rga_mm_unmap_phys_addr(struct rga_internal_buffer *internal_buffer)
{
WARN_ON(internal_buffer->dma_buffer == NULL);
if (rga_mm_is_invalid_dma_buffer(internal_buffer->dma_buffer))
return;
if (internal_buffer->dma_buffer->scheduler->data->mmu == RGA_IOMMU)
rga_iommu_unmap(internal_buffer->dma_buffer);
kfree(internal_buffer->dma_buffer);
internal_buffer->dma_buffer = NULL;
internal_buffer->phys_addr = 0;
internal_buffer->size = 0;
}
static int rga_mm_map_phys_addr(struct rga_external_buffer *external_buffer,
struct rga_internal_buffer *internal_buffer,
struct rga_job *job)
{
int ret;
phys_addr_t phys_addr;
int buffer_size;
uint32_t mm_flag = 0;
struct rga_dma_buffer *buffer;
struct rga_scheduler_t *scheduler;
scheduler = job ? job->scheduler :
rga_drvdata->scheduler[rga_drvdata->map_scheduler_index];
if (scheduler == NULL) {
pr_err("Invalid scheduler device!\n");
return -EINVAL;
}
if (internal_buffer->memory_parm.size)
buffer_size = internal_buffer->memory_parm.size;
else
buffer_size = rga_image_size_cal(internal_buffer->memory_parm.width,
internal_buffer->memory_parm.height,
internal_buffer->memory_parm.format,
NULL, NULL, NULL);
if (buffer_size <= 0) {
pr_err("Fault to get phys addr size!\n");
return buffer_size == 0 ? -EINVAL : buffer_size;
}
phys_addr = external_buffer->memory;
mm_flag |= RGA_MEM_PHYSICAL_CONTIGUOUS;
if (rga_mm_check_range_phys_addr(phys_addr, buffer_size))
mm_flag |= RGA_MEM_UNDER_4G;
if (!rga_mm_check_memory_limit(scheduler, mm_flag)) {
pr_err("scheduler core[%d] unsupported mm_flag[0x%x]!\n",
scheduler->core, mm_flag);
return -EINVAL;
}
buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
if (buffer == NULL) {
pr_err("%s alloc internal dma buffer error!\n", __func__);
return -ENOMEM;
}
if (scheduler->data->mmu == RGA_IOMMU) {
ret = rga_iommu_map(phys_addr, buffer_size, buffer, scheduler->dev);
if (ret < 0) {
pr_err("%s core[%d] map phys_addr error!\n", __func__, scheduler->core);
return ret;
}
}
buffer->scheduler = scheduler;
internal_buffer->phys_addr = phys_addr;
internal_buffer->size = buffer_size;
internal_buffer->mm_flag = mm_flag;
internal_buffer->dma_buffer = buffer;
return 0;
}
static int rga_mm_unmap_buffer(struct rga_internal_buffer *internal_buffer)
{
switch (internal_buffer->type) {
case RGA_DMA_BUFFER:
case RGA_DMA_BUFFER_PTR:
rga_mm_unmap_dma_buffer(internal_buffer);
break;
case RGA_VIRTUAL_ADDRESS:
rga_mm_unmap_virt_addr(internal_buffer);
break;
case RGA_PHYSICAL_ADDRESS:
rga_mm_unmap_phys_addr(internal_buffer);
break;
default:
pr_err("Illegal external buffer!\n");
return -EFAULT;
}
return 0;
}
static int rga_mm_map_buffer(struct rga_external_buffer *external_buffer,
struct rga_internal_buffer *internal_buffer,
struct rga_job *job, int write_flag)
{
int ret;
memcpy(&internal_buffer->memory_parm, &external_buffer->memory_parm,
sizeof(internal_buffer->memory_parm));
switch (external_buffer->type) {
case RGA_DMA_BUFFER:
case RGA_DMA_BUFFER_PTR:
internal_buffer->type = external_buffer->type;
ret = rga_mm_map_dma_buffer(external_buffer, internal_buffer, job);
if (ret < 0) {
pr_err("%s map dma_buf error!\n", __func__);
return ret;
}
internal_buffer->size = internal_buffer->dma_buffer->size -
internal_buffer->dma_buffer->offset;
internal_buffer->mm_flag |= RGA_MEM_NEED_USE_IOMMU;
break;
case RGA_VIRTUAL_ADDRESS:
internal_buffer->type = RGA_VIRTUAL_ADDRESS;
ret = rga_mm_map_virt_addr(external_buffer, internal_buffer, job, write_flag);
if (ret < 0) {
pr_err("%s iommu_map virtual address error!\n", __func__);
return ret;
}
internal_buffer->size = internal_buffer->virt_addr->size -
internal_buffer->virt_addr->offset;
internal_buffer->mm_flag |= RGA_MEM_NEED_USE_IOMMU;
break;
case RGA_PHYSICAL_ADDRESS:
internal_buffer->type = RGA_PHYSICAL_ADDRESS;
ret = rga_mm_map_phys_addr(external_buffer, internal_buffer, job);
if (ret < 0) {
pr_err("%s iommu_map physical address error!\n", __func__);
return ret;
}
internal_buffer->mm_flag |= RGA_MEM_NEED_USE_IOMMU;
break;
default:
pr_err("Illegal external buffer!\n");
return -EFAULT;
}
return 0;
}
static void rga_mm_kref_release_buffer(struct kref *ref)
{
struct rga_internal_buffer *internal_buffer;
internal_buffer = container_of(ref, struct rga_internal_buffer, refcount);
rga_mm_unmap_buffer(internal_buffer);
idr_remove(&rga_drvdata->mm->memory_idr, internal_buffer->handle);
kfree(internal_buffer);
rga_drvdata->mm->buffer_count--;
}
/*
* Called at driver close to release the memory's handle references.
*/
static int rga_mm_handle_remove(int id, void *ptr, void *data)
{
struct rga_internal_buffer *internal_buffer = ptr;
rga_mm_kref_release_buffer(&internal_buffer->refcount);
return 0;
}
static struct rga_internal_buffer *
rga_mm_lookup_external(struct rga_mm *mm_session,
struct rga_external_buffer *external_buffer)
{
int id;
struct dma_buf *dma_buf = NULL;
struct rga_internal_buffer *temp_buffer = NULL;
struct rga_internal_buffer *output_buffer = NULL;
WARN_ON(!mutex_is_locked(&mm_session->lock));
switch (external_buffer->type) {
case RGA_DMA_BUFFER:
dma_buf = dma_buf_get((int)external_buffer->memory);
if (IS_ERR(dma_buf))
return (struct rga_internal_buffer *)dma_buf;
idr_for_each_entry(&mm_session->memory_idr, temp_buffer, id) {
if (temp_buffer->dma_buffer == NULL)
continue;
if (temp_buffer->dma_buffer[0].dma_buf == dma_buf) {
output_buffer = temp_buffer;
break;
}
}
dma_buf_put(dma_buf);
break;
case RGA_VIRTUAL_ADDRESS:
idr_for_each_entry(&mm_session->memory_idr, temp_buffer, id) {
if (temp_buffer->virt_addr == NULL)
continue;
if (temp_buffer->virt_addr->addr == external_buffer->memory) {
output_buffer = temp_buffer;
break;
}
}
break;
case RGA_PHYSICAL_ADDRESS:
idr_for_each_entry(&mm_session->memory_idr, temp_buffer, id) {
if (temp_buffer->phys_addr == external_buffer->memory) {
output_buffer = temp_buffer;
break;
}
}
break;
case RGA_DMA_BUFFER_PTR:
idr_for_each_entry(&mm_session->memory_idr, temp_buffer, id) {
if (temp_buffer->dma_buffer == NULL)
continue;
if ((unsigned long)temp_buffer->dma_buffer[0].dma_buf ==
external_buffer->memory) {
output_buffer = temp_buffer;
break;
}
}
break;
default:
pr_err("Illegal external buffer!\n");
return NULL;
}
return output_buffer;
}
struct rga_internal_buffer *rga_mm_lookup_handle(struct rga_mm *mm_session, uint32_t handle)
{
struct rga_internal_buffer *output_buffer;
WARN_ON(!mutex_is_locked(&mm_session->lock));
output_buffer = idr_find(&mm_session->memory_idr, handle);
return output_buffer;
}
int rga_mm_lookup_flag(struct rga_mm *mm_session, uint64_t handle)
{
struct rga_internal_buffer *output_buffer;
output_buffer = rga_mm_lookup_handle(mm_session, handle);
if (output_buffer == NULL) {
pr_err("This handle[%ld] is illegal.\n", (unsigned long)handle);
return -EINVAL;
}
return output_buffer->mm_flag;
}
dma_addr_t rga_mm_lookup_iova(struct rga_internal_buffer *buffer)
{
if (rga_mm_is_invalid_dma_buffer(buffer->dma_buffer))
return 0;
return buffer->dma_buffer->iova + buffer->dma_buffer->offset;
}
struct sg_table *rga_mm_lookup_sgt(struct rga_internal_buffer *buffer)
{
if (rga_mm_is_invalid_dma_buffer(buffer->dma_buffer))
return NULL;
return buffer->dma_buffer->sgt;
}
void rga_mm_dump_buffer(struct rga_internal_buffer *dump_buffer)
{
pr_info("handle = %d refcount = %d mm_flag = 0x%x\n",
dump_buffer->handle, kref_read(&dump_buffer->refcount),
dump_buffer->mm_flag);
switch (dump_buffer->type) {
case RGA_DMA_BUFFER:
case RGA_DMA_BUFFER_PTR:
if (rga_mm_is_invalid_dma_buffer(dump_buffer->dma_buffer))
break;
pr_info("dma_buffer:\n");
pr_info("dma_buf = %p, iova = 0x%lx, sgt = %p, size = %ld, map_core = 0x%x\n",
dump_buffer->dma_buffer->dma_buf,
(unsigned long)dump_buffer->dma_buffer->iova,
dump_buffer->dma_buffer->sgt,
dump_buffer->dma_buffer->size,
dump_buffer->dma_buffer->scheduler->core);
if (dump_buffer->mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS)
pr_info("is contiguous, pa = 0x%lx\n",
(unsigned long)dump_buffer->phys_addr);
break;
case RGA_VIRTUAL_ADDRESS:
if (dump_buffer->virt_addr == NULL)
break;
pr_info("virtual address:\n");
pr_info("va = 0x%lx, pages = %p, size = %ld\n",
(unsigned long)dump_buffer->virt_addr->addr,
dump_buffer->virt_addr->pages,
dump_buffer->virt_addr->size);
if (rga_mm_is_invalid_dma_buffer(dump_buffer->dma_buffer))
break;
pr_info("iova = 0x%lx, offset = 0x%lx, sgt = %p, size = %ld, map_core = 0x%x\n",
(unsigned long)dump_buffer->dma_buffer->iova,
(unsigned long)dump_buffer->dma_buffer->offset,
dump_buffer->dma_buffer->sgt,
dump_buffer->dma_buffer->size,
dump_buffer->dma_buffer->scheduler->core);
if (dump_buffer->mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS)
pr_info("is contiguous, pa = 0x%lx\n",
(unsigned long)dump_buffer->phys_addr);
break;
case RGA_PHYSICAL_ADDRESS:
pr_info("physical address: pa = 0x%lx\n", (unsigned long)dump_buffer->phys_addr);
break;
default:
pr_err("Illegal external buffer!\n");
break;
}
}
void rga_mm_dump_info(struct rga_mm *mm_session)
{
int id;
struct rga_internal_buffer *dump_buffer;
WARN_ON(!mutex_is_locked(&mm_session->lock));
pr_info("rga mm info:\n");
pr_info("buffer count = %d\n", mm_session->buffer_count);
pr_info("===============================================================\n");
idr_for_each_entry(&mm_session->memory_idr, dump_buffer, id) {
rga_mm_dump_buffer(dump_buffer);
pr_info("---------------------------------------------------------------\n");
}
}
static bool rga_mm_is_need_mmu(struct rga_job *job, struct rga_internal_buffer *buffer)
{
if (buffer == NULL || job == NULL || job->scheduler == NULL)
return false;
/* RK_IOMMU no need to configure enable or not in the driver. */
if (job->scheduler->data->mmu == RGA_IOMMU)
return false;
/* RK_MMU need to configure enable or not in the driver. */
if (buffer->mm_flag & RGA_MEM_PHYSICAL_CONTIGUOUS)
return false;
else if (buffer->mm_flag & RGA_MEM_NEED_USE_IOMMU)
return true;
return false;
}
static int rga_mm_set_mmu_flag(struct rga_job *job)
{
struct rga_mmu_t *mmu_info;