mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
d251510d4c
Further investigation revealed that codec buffers also don't need to be allocated at higher addresses than firmware base for MFC v6+ hardware. Those buffers can be quite large and its size depends on the selected format and framesize. This patch changes the way the codec buffers are allocated - driver will use generic allocator for them instead of the pre-allocated buffer for firmware and contexts. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/*
|
|
* drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
|
|
*
|
|
* Samsung MFC (Multi Function Codec - FIMV) driver
|
|
* This file contains hw related functions.
|
|
*
|
|
* Kamil Debski, Copyright (c) 2012 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com/
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include "s5p_mfc_debug.h"
|
|
#include "s5p_mfc_opr.h"
|
|
#include "s5p_mfc_opr_v5.h"
|
|
#include "s5p_mfc_opr_v6.h"
|
|
|
|
static struct s5p_mfc_hw_ops *s5p_mfc_ops;
|
|
|
|
void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev)
|
|
{
|
|
if (IS_MFCV6_PLUS(dev)) {
|
|
s5p_mfc_ops = s5p_mfc_init_hw_ops_v6();
|
|
dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6;
|
|
} else {
|
|
s5p_mfc_ops = s5p_mfc_init_hw_ops_v5();
|
|
dev->warn_start = S5P_FIMV_ERR_WARNINGS_START;
|
|
}
|
|
dev->mfc_ops = s5p_mfc_ops;
|
|
}
|
|
|
|
void s5p_mfc_init_regs(struct s5p_mfc_dev *dev)
|
|
{
|
|
if (IS_MFCV6_PLUS(dev))
|
|
dev->mfc_regs = s5p_mfc_init_regs_v6_plus(dev);
|
|
}
|
|
|
|
int s5p_mfc_alloc_priv_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
|
|
struct s5p_mfc_priv_buf *b)
|
|
{
|
|
unsigned int bits = dev->mem_size >> PAGE_SHIFT;
|
|
unsigned int count = b->size >> PAGE_SHIFT;
|
|
unsigned int align = (SZ_64K >> PAGE_SHIFT) - 1;
|
|
unsigned int start, offset;
|
|
|
|
mfc_debug(3, "Allocating priv: %zu\n", b->size);
|
|
|
|
if (dev->mem_virt) {
|
|
start = bitmap_find_next_zero_area(dev->mem_bitmap, bits, 0, count, align);
|
|
if (start > bits)
|
|
goto no_mem;
|
|
|
|
bitmap_set(dev->mem_bitmap, start, count);
|
|
offset = start << PAGE_SHIFT;
|
|
b->virt = dev->mem_virt + offset;
|
|
b->dma = dev->mem_base + offset;
|
|
} else {
|
|
struct device *mem_dev = dev->mem_dev[mem_ctx];
|
|
dma_addr_t base = dev->dma_base[mem_ctx];
|
|
|
|
b->ctx = mem_ctx;
|
|
b->virt = dma_alloc_coherent(mem_dev, b->size, &b->dma, GFP_KERNEL);
|
|
if (!b->virt)
|
|
goto no_mem;
|
|
if (b->dma < base) {
|
|
mfc_err("Invalid memory configuration - buffer (%pad) is below base memory address(%pad)\n",
|
|
&b->dma, &base);
|
|
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
mfc_debug(3, "Allocated addr %p %pad\n", b->virt, &b->dma);
|
|
return 0;
|
|
no_mem:
|
|
mfc_err("Allocating private buffer of size %zu failed\n", b->size);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int s5p_mfc_alloc_generic_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
|
|
struct s5p_mfc_priv_buf *b)
|
|
{
|
|
struct device *mem_dev = dev->mem_dev[mem_ctx];
|
|
|
|
mfc_debug(3, "Allocating generic buf: %zu\n", b->size);
|
|
|
|
b->ctx = mem_ctx;
|
|
b->virt = dma_alloc_coherent(mem_dev, b->size, &b->dma, GFP_KERNEL);
|
|
if (!b->virt)
|
|
goto no_mem;
|
|
|
|
mfc_debug(3, "Allocated addr %p %pad\n", b->virt, &b->dma);
|
|
return 0;
|
|
no_mem:
|
|
mfc_err("Allocating generic buffer of size %zu failed\n", b->size);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void s5p_mfc_release_priv_buf(struct s5p_mfc_dev *dev,
|
|
struct s5p_mfc_priv_buf *b)
|
|
{
|
|
if (dev->mem_virt) {
|
|
unsigned int start = (b->dma - dev->mem_base) >> PAGE_SHIFT;
|
|
unsigned int count = b->size >> PAGE_SHIFT;
|
|
|
|
bitmap_clear(dev->mem_bitmap, start, count);
|
|
} else {
|
|
struct device *mem_dev = dev->mem_dev[b->ctx];
|
|
|
|
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
|
|
}
|
|
b->virt = NULL;
|
|
b->dma = 0;
|
|
b->size = 0;
|
|
}
|
|
|
|
void s5p_mfc_release_generic_buf(struct s5p_mfc_dev *dev,
|
|
struct s5p_mfc_priv_buf *b)
|
|
{
|
|
struct device *mem_dev = dev->mem_dev[b->ctx];
|
|
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
|
|
b->virt = NULL;
|
|
b->dma = 0;
|
|
b->size = 0;
|
|
}
|