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[media] media: ti-vpe: vpdma: Add support for setting max width height 

Add a helper function to be able to set the maximum
VPDMA transfer size to limit potential buffer overrun.

Added enums for max_width and max_height fields of the
outbound data descriptor.

Changed vpdma_add_out_dtd to accept two more arguments
for max width and height.

Make use of different max width & height sets for different
of capture module (i.e. slices).

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Nikhil Devshatwar 2016-11-18 21:20:21 -02:00 committed by Mauro Carvalho Chehab
parent f43aa420a8
commit 634271f8f6
4 changed files with 62 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/media/platform/ti-vpe/vpdma.c
View File

@ -493,6 +493,22 @@ void vpdma_update_dma_addr(struct vpdma_data *vpdma,
}
EXPORT_SYMBOL(vpdma_update_dma_addr);
void vpdma_set_max_size(struct vpdma_data *vpdma, int reg_addr,
u32 width, u32 height)
{
if (reg_addr != VPDMA_MAX_SIZE1 && reg_addr != VPDMA_MAX_SIZE2 &&
reg_addr != VPDMA_MAX_SIZE3)
reg_addr = VPDMA_MAX_SIZE1;
write_field_reg(vpdma, reg_addr, width - 1,
VPDMA_MAX_SIZE_WIDTH_MASK, VPDMA_MAX_SIZE_WIDTH_SHFT);
write_field_reg(vpdma, reg_addr, height - 1,
VPDMA_MAX_SIZE_HEIGHT_MASK, VPDMA_MAX_SIZE_HEIGHT_SHFT);
}
EXPORT_SYMBOL(vpdma_set_max_size);
static void dump_cfd(struct vpdma_cfd *cfd)
{
int class;
@ -667,23 +683,25 @@ static void dump_dtd(struct vpdma_dtd *dtd)
* @c_rect: compose params of output image
* @fmt: vpdma data format of the buffer
* dma_addr: dma address as seen by VPDMA
* max_width: enum for maximum width of data transfer
* max_height: enum for maximum height of data transfer
* chan: VPDMA channel
* flags: VPDMA flags to configure some descriptor fileds
*/
void vpdma_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
enum vpdma_channel chan, u32 flags)
int max_w, int max_h, enum vpdma_channel chan, u32 flags)
{
vpdma_rawchan_add_out_dtd(list, width, c_rect, fmt, dma_addr,
chan_info[chan].num, flags);
max_w, max_h, chan_info[chan].num, flags);
}
EXPORT_SYMBOL(vpdma_add_out_dtd);
void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
int raw_vpdma_chan, u32 flags)
int max_w, int max_h, int raw_vpdma_chan, u32 flags)
{
int priority = 0;
int field = 0;
@ -722,8 +740,7 @@ void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
dtd->pkt_ctl = dtd_pkt_ctl(!!(flags & VPDMA_DATA_MODE_TILED),
DTD_DIR_OUT, channel, priority, next_chan);
dtd->desc_write_addr = dtd_desc_write_addr(0, 0, 0, 0);
dtd->max_width_height = dtd_max_width_height(MAX_OUT_WIDTH_1920,
MAX_OUT_HEIGHT_1080);
dtd->max_width_height = dtd_max_width_height(max_w, max_h);
dtd->client_attr0 = 0;
dtd->client_attr1 = 0;

32
drivers/media/platform/ti-vpe/vpdma.h
View File

@ -117,6 +117,30 @@ enum vpdma_frame_start_event {
VPDMA_FSEVENT_CHANNEL_ACTIVE,
};
/* max width configurations */
enum vpdma_max_width {
MAX_OUT_WIDTH_UNLIMITED = 0,
MAX_OUT_WIDTH_REG1,
MAX_OUT_WIDTH_REG2,
MAX_OUT_WIDTH_REG3,
MAX_OUT_WIDTH_352,
MAX_OUT_WIDTH_768,
MAX_OUT_WIDTH_1280,
MAX_OUT_WIDTH_1920,
};
/* max height configurations */
enum vpdma_max_height {
MAX_OUT_HEIGHT_UNLIMITED = 0,
MAX_OUT_HEIGHT_REG1,
MAX_OUT_HEIGHT_REG2,
MAX_OUT_HEIGHT_REG3,
MAX_OUT_HEIGHT_288,
MAX_OUT_HEIGHT_576,
MAX_OUT_HEIGHT_720,
MAX_OUT_HEIGHT_1080,
};
/*
* VPDMA channel numbers
*/
@ -198,11 +222,12 @@ void vpdma_add_sync_on_channel_ctd(struct vpdma_desc_list *list,
void vpdma_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
enum vpdma_channel chan, u32 flags);
int max_w, int max_h, enum vpdma_channel chan, u32 flags);
void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
int raw_vpdma_chan, u32 flags);
int max_w, int max_h, int raw_vpdma_chan, u32 flags);
void vpdma_add_in_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
@ -221,6 +246,9 @@ void vpdma_set_line_mode(struct vpdma_data *vpdma, int line_mode,
enum vpdma_channel chan);
void vpdma_set_frame_start_event(struct vpdma_data *vpdma,
enum vpdma_frame_start_event fs_event, enum vpdma_channel chan);
void vpdma_set_max_size(struct vpdma_data *vpdma, int reg_addr,
u32 width, u32 height);
void vpdma_set_bg_color(struct vpdma_data *vpdma,
struct vpdma_data_format *fmt, u32 color);
void vpdma_dump_regs(struct vpdma_data *vpdma);

40
drivers/media/platform/ti-vpe/vpdma_priv.h
View File

@ -28,6 +28,10 @@
#define VPDMA_MAX_SIZE1 0x34
#define VPDMA_MAX_SIZE2 0x38
#define VPDMA_MAX_SIZE3 0x3c
#define VPDMA_MAX_SIZE_WIDTH_MASK 0xffff
#define VPDMA_MAX_SIZE_WIDTH_SHFT 16
#define VPDMA_MAX_SIZE_HEIGHT_MASK 0xffff
#define VPDMA_MAX_SIZE_HEIGHT_SHFT 0
/* Interrupts */
#define VPDMA_INT_CHAN_STAT(grp) (0x40 + grp * 8)
@ -227,42 +231,6 @@ struct vpdma_dtd {
#define DTD_MAX_HEIGHT_MASK 0x07
#define DTD_MAX_HEIGHT_SHFT 0
/* max width configurations */
/* unlimited width */
#define MAX_OUT_WIDTH_UNLIMITED 0
/* as specified in max_size1 reg */
#define MAX_OUT_WIDTH_REG1 1
/* as specified in max_size2 reg */
#define MAX_OUT_WIDTH_REG2 2
/* as specified in max_size3 reg */
#define MAX_OUT_WIDTH_REG3 3
/* maximum of 352 pixels as width */
#define MAX_OUT_WIDTH_352 4
/* maximum of 768 pixels as width */
#define MAX_OUT_WIDTH_768 5
/* maximum of 1280 pixels width */
#define MAX_OUT_WIDTH_1280 6
/* maximum of 1920 pixels as width */
#define MAX_OUT_WIDTH_1920 7
/* max height configurations */
/* unlimited height */
#define MAX_OUT_HEIGHT_UNLIMITED 0
/* as specified in max_size1 reg */
#define MAX_OUT_HEIGHT_REG1 1
/* as specified in max_size2 reg */
#define MAX_OUT_HEIGHT_REG2 2
/* as specified in max_size3 reg */
#define MAX_OUT_HEIGHT_REG3 3
/* maximum of 288 lines as height */
#define MAX_OUT_HEIGHT_288 4
/* maximum of 576 lines as height */
#define MAX_OUT_HEIGHT_576 5
/* maximum of 720 lines as height */
#define MAX_OUT_HEIGHT_720 6
/* maximum of 1080 lines as height */
#define MAX_OUT_HEIGHT_1080 7
static inline u32 dtd_type_ctl_stride(int type, bool notify, int field,
bool one_d, bool even_line_skip, bool odd_line_skip,
int line_stride)

7
drivers/media/platform/ti-vpe/vpe.c
View File

@ -44,6 +44,7 @@
#include <media/videobuf2-dma-contig.h>
#include "vpdma.h"
#include "vpdma_priv.h"
#include "vpe_regs.h"
#include "sc.h"
#include "csc.h"
@ -1035,8 +1036,12 @@ static void add_out_dtd(struct vpe_ctx *ctx, int port)
if (q_data->flags & Q_DATA_MODE_TILED)
flags |= VPDMA_DATA_MODE_TILED;
vpdma_set_max_size(ctx->dev->vpdma, VPDMA_MAX_SIZE1,
MAX_W, MAX_H);
vpdma_add_out_dtd(&ctx->desc_list, q_data->width, &q_data->c_rect,
vpdma_fmt, dma_addr, p_data->channel, flags);
vpdma_fmt, dma_addr, MAX_OUT_WIDTH_REG1,
MAX_OUT_HEIGHT_REG1, p_data->channel, flags);
}
static void add_in_dtd(struct vpe_ctx *ctx, int port)