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arm/raspberrypi: run VideoCore and mailbox code through rtems.uncrustify.

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Some changes have been reverted to keep readability.
For example squash of BCM2835_MBOX_TAG_* defines
which are visually aligned in column.
This commit is contained in:
Pavel Pisa
2016-06-28 16:15:38 +02:00
parent 48704cdebd
commit 68565b090e
5 changed files with 264 additions and 244 deletions
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315
c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
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@@ -25,25 +25,24 @@
#include <libcpu/arm-cp15.h>
#include "vc_defines.h"
#if (RPI_L2_CACHE_ENABLE == 1)
#if ( RPI_L2_CACHE_ENABLE == 1 )
#define BCM2835_VC_MEMORY_MAPPING 0x40000000
#else
#define BCM2835_VC_MEMORY_MAPPING 0xC0000000
#endif
static inline bool
bcm2835_mailbox_buffer_suceeded(const bcm2835_mbox_buf_hdr *hdr)
static inline bool bcm2835_mailbox_buffer_suceeded(
const bcm2835_mbox_buf_hdr *hdr )
{
RTEMS_COMPILER_MEMORY_BARRIER();
return (hdr->buf_code == BCM2835_MBOX_BUF_CODE_REQUEST_SUCCEED);
return ( hdr->buf_code == BCM2835_MBOX_BUF_CODE_REQUEST_SUCCEED );
}
static inline int
bcm2835_mailbox_send_read_buffer(void *buf)
static inline int bcm2835_mailbox_send_read_buffer( void *buf )
{
raspberrypi_mailbox_write(BCM2835_MBOX_CHANNEL_PROP_AVC,
(unsigned int)buf + BCM2835_VC_MEMORY_MAPPING);
raspberrypi_mailbox_read(BCM2835_MBOX_CHANNEL_PROP_AVC);
raspberrypi_mailbox_write( BCM2835_MBOX_CHANNEL_PROP_AVC,
(unsigned int) buf + BCM2835_VC_MEMORY_MAPPING );
raspberrypi_mailbox_read( BCM2835_MBOX_CHANNEL_PROP_AVC );
return 0;
}
@@ -52,8 +51,10 @@ bcm2835_mailbox_send_read_buffer(void *buf)
* with VideoCore has to be propagated through ARM11/Cortex-A7
* caches
*/
static inline void
bcm2835_mailbox_buffer_flush_and_invalidate(void *buf, size_t size)
static inline void bcm2835_mailbox_buffer_flush_and_invalidate(
void *buf,
size_t size
)
{
uint32_t sctlr_val;
@@ -61,16 +62,17 @@ bcm2835_mailbox_buffer_flush_and_invalidate(void *buf, size_t size)
RTEMS_COMPILER_MEMORY_BARRIER();
arm_cp15_drain_write_buffer();
if (sctlr_val & (ARM_CP15_CTRL_C | ARM_CP15_CTRL_M)) {
if ( sctlr_val & ( ARM_CP15_CTRL_C | ARM_CP15_CTRL_M ) ) {
#if 0
/*
These architecture independent RTEMS API functions should be
used there but CPU_DATA_CACHE_ALIGNMENT is not defined
for ARM architecture version used on RPi and functions
are dummy for now and do not provide required synchronization
*/
rtems_cache_flush_multiple_data_lines(buf, size);
rtems_cache_invalidate_multiple_data_lines(buf, size);
These architecture independent RTEMS API functions should be
used there but CPU_DATA_CACHE_ALIGNMENT is not defined
for ARM architecture version used on RPi and functions
are dummy for now and do not provide required synchronization
*/
rtems_cache_flush_multiple_data_lines( buf, size );
rtems_cache_invalidate_multiple_data_lines( buf, size );
#else
/* Flush complete data cache */
arm_cp15_data_cache_clean_and_invalidate();
@@ -78,32 +80,36 @@ bcm2835_mailbox_buffer_flush_and_invalidate(void *buf, size_t size)
}
}
#define BCM2835_MBOX_VAL_LENGTH_MASK(_val_len) \
(_val_len&(~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE))
#define BCM2835_MBOX_VAL_LENGTH_MASK( _val_len ) \
( _val_len & ( ~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE ) )
int
bcm2835_mailbox_get_display_size(bcm2835_get_display_size_entries *_entries)
int bcm2835_mailbox_get_display_size(
bcm2835_get_display_size_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_display_size get_display_size;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_display_size,
BCM2835_MAILBOX_TAG_GET_DISPLAY_SIZE);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_display_size,
BCM2835_MAILBOX_TAG_GET_DISPLAY_SIZE );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->width = buffer.get_display_size.body.resp.width;
_entries->height = buffer.get_display_size.body.resp.height;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_init_frame_buffer(bcm2835_init_frame_buffer_entries* _entries)
int bcm2835_mailbox_init_frame_buffer(
bcm2835_init_frame_buffer_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
@@ -118,52 +124,54 @@ bcm2835_mailbox_init_frame_buffer(bcm2835_init_frame_buffer_entries* _entries)
bcm2835_mbox_tag_get_pitch get_pitch;
uint32_t end_tag;
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG(&buffer.set_display_size,
BCM2835_MAILBOX_TAG_SET_DISPLAY_SIZE);
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG( &buffer.set_display_size,
BCM2835_MAILBOX_TAG_SET_DISPLAY_SIZE );
buffer.set_display_size.body.req.width = _entries->xres;
buffer.set_display_size.body.req.height = _entries->yres;
BCM2835_MBOX_INIT_TAG(&buffer.set_virtual_size,
BCM2835_MAILBOX_TAG_SET_VIRTUAL_SIZE);
BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_size,
BCM2835_MAILBOX_TAG_SET_VIRTUAL_SIZE );
buffer.set_virtual_size.body.req.vwidth = _entries->xvirt;
buffer.set_virtual_size.body.req.vheight = _entries->yvirt;
BCM2835_MBOX_INIT_TAG(&buffer.set_depth,
BCM2835_MAILBOX_TAG_SET_DEPTH);
BCM2835_MBOX_INIT_TAG( &buffer.set_depth,
BCM2835_MAILBOX_TAG_SET_DEPTH );
buffer.set_depth.body.req.depth = _entries->depth;
BCM2835_MBOX_INIT_TAG(&buffer.set_pixel_order,
BCM2835_MAILBOX_TAG_SET_PIXEL_ORDER);
BCM2835_MBOX_INIT_TAG( &buffer.set_pixel_order,
BCM2835_MAILBOX_TAG_SET_PIXEL_ORDER );
buffer.set_pixel_order.body.req.pixel_order = _entries->pixel_order;
BCM2835_MBOX_INIT_TAG(&buffer.set_alpha_mode,
BCM2835_MAILBOX_TAG_SET_ALPHA_MODE);
BCM2835_MBOX_INIT_TAG( &buffer.set_alpha_mode,
BCM2835_MAILBOX_TAG_SET_ALPHA_MODE );
buffer.set_alpha_mode.body.req.alpha_mode = _entries->alpha_mode;
BCM2835_MBOX_INIT_TAG(&buffer.set_virtual_offset,
BCM2835_MAILBOX_TAG_SET_VIRTUAL_OFFSET);
BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_offset,
BCM2835_MAILBOX_TAG_SET_VIRTUAL_OFFSET );
buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_x;
buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_y;
BCM2835_MBOX_INIT_TAG(&buffer.set_overscan,
BCM2835_MAILBOX_TAG_SET_OVERSCAN);
BCM2835_MBOX_INIT_TAG( &buffer.set_overscan,
BCM2835_MAILBOX_TAG_SET_OVERSCAN );
buffer.set_overscan.body.req.overscan_top = _entries->overscan_top;
buffer.set_overscan.body.req.overscan_bottom = _entries->overscan_bottom;
buffer.set_overscan.body.req.overscan_left = _entries->overscan_left;
buffer.set_overscan.body.req.overscan_right = _entries->overscan_right;
BCM2835_MBOX_INIT_TAG(&buffer.allocate_buffer,
BCM2835_MAILBOX_TAG_ALLOCATE_BUFFER);
BCM2835_MBOX_INIT_TAG( &buffer.allocate_buffer,
BCM2835_MAILBOX_TAG_ALLOCATE_BUFFER );
buffer.allocate_buffer.body.req.align = 0x100;
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_pitch,
BCM2835_MAILBOX_TAG_GET_PITCH);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_pitch,
BCM2835_MAILBOX_TAG_GET_PITCH );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->xres = buffer.set_display_size.body.resp.width;
_entries->yres = buffer.set_display_size.body.resp.height;
_entries->xvirt = buffer.set_virtual_size.body.resp.vwidth;
_entries->yvirt = buffer.set_virtual_size.body.resp.vheight;
_entries->depth = buffer.set_depth.body.resp.depth;
#if (BSP_IS_RPI2 == 1)
#if ( BSP_IS_RPI2 == 1 )
_entries->base = buffer.allocate_buffer.body.resp.base;
#else
_entries->base = buffer.allocate_buffer.body.resp.base
- BCM2835_VC_MEMORY_MAPPING;
_entries->base = buffer.allocate_buffer.body.resp.base -
BCM2835_VC_MEMORY_MAPPING;
#endif
_entries->size = buffer.allocate_buffer.body.resp.size;
_entries->pixel_order = buffer.set_pixel_order.body.resp.pixel_order;
@@ -174,179 +182,208 @@ bcm2835_mailbox_init_frame_buffer(bcm2835_init_frame_buffer_entries* _entries)
_entries->overscan_right = buffer.set_overscan.body.resp.overscan_right;
_entries->overscan_top = buffer.set_overscan.body.resp.overscan_top;
_entries->overscan_bottom = buffer.set_overscan.body.resp.overscan_bottom;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_pitch(bcm2835_get_pitch_entries* _entries)
int bcm2835_mailbox_get_pitch( bcm2835_get_pitch_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_pitch get_pitch;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_pitch,
BCM2835_MAILBOX_TAG_GET_PITCH);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_pitch,
BCM2835_MAILBOX_TAG_GET_PITCH );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->pitch = buffer.get_pitch.body.resp.pitch;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_cmdline(bcm2835_get_cmdline_entries* _entries)
int bcm2835_mailbox_get_cmdline( bcm2835_get_cmdline_entries *_entries )
{
int i;
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_cmd_line get_cmd_line;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_cmd_line,
BCM2835_MAILBOX_TAG_GET_CMD_LINE);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_cmd_line,
BCM2835_MAILBOX_TAG_GET_CMD_LINE );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
for (i = 0;
i < BCM2835_MBOX_VAL_LENGTH_MASK(buffer.get_cmd_line.tag_hdr.val_len);
++i)
{
_entries->cmdline[i] = buffer.get_cmd_line.body.resp.cmdline[i];
for ( i = 0;
i < BCM2835_MBOX_VAL_LENGTH_MASK( buffer.get_cmd_line.tag_hdr.val_len );
++i ) {
_entries->cmdline[ i ] = buffer.get_cmd_line.body.resp.cmdline[ i ];
}
_entries->cmdline[i] = '\0';
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
_entries->cmdline[ i ] = '\0';
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_set_power_state(bcm2835_set_power_state_entries *_entries)
int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_power_state set_power_state;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG(&buffer.set_power_state,
BCM2835_MAILBOX_TAG_SET_POWER_STATE);
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG( &buffer.set_power_state,
BCM2835_MAILBOX_TAG_SET_POWER_STATE );
buffer.set_power_state.body.req.dev_id = _entries->dev_id;
buffer.set_power_state.body.req.state = _entries->state;
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->dev_id = buffer.set_power_state.body.resp.dev_id;
_entries->state = buffer.set_power_state.body.resp.state;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
_entries->state = buffer.set_power_state.body.resp.state;
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_arm_memory(bcm2835_get_arm_memory_entries* _entries)
int bcm2835_mailbox_get_arm_memory( bcm2835_get_arm_memory_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_arm_memory get_arm_memory;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_arm_memory,
BCM2835_MAILBOX_TAG_GET_ARM_MEMORY);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_arm_memory,
BCM2835_MAILBOX_TAG_GET_ARM_MEMORY );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->base = buffer.get_arm_memory.body.resp.base;
_entries->size = buffer.get_arm_memory.body.resp.size;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_vc_memory(bcm2835_get_vc_memory_entries* _entries)
int bcm2835_mailbox_get_vc_memory( bcm2835_get_vc_memory_entries *_entries )
{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_vc_memory get_vc_memory;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_vc_memory,
BCM2835_MAILBOX_TAG_GET_VC_MEMORY);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_vc_memory,
BCM2835_MAILBOX_TAG_GET_VC_MEMORY );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->base = buffer.get_vc_memory.body.resp.base;
_entries->size = buffer.get_vc_memory.body.resp.size;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_firmware_revision(bcm2835_mailbox_get_fw_rev_entries* _entries)
int bcm2835_mailbox_get_firmware_revision(
bcm2835_mailbox_get_fw_rev_entries *_entries )
{
struct{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_fw_rev get_fw_rev;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_fw_rev,
BCM2835_MAILBOX_TAG_FIRMWARE_REVISION);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_fw_rev,
BCM2835_MAILBOX_TAG_FIRMWARE_REVISION );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->fw_rev = buffer.get_fw_rev.body.resp.rev;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_board_model(bcm2835_get_board_spec_entries* _entries)
int bcm2835_mailbox_get_board_model( bcm2835_get_board_spec_entries *_entries )
{
struct{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_board_spec get_board_model;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_board_model,
BCM2835_MAILBOX_TAG_GET_BOARD_MODEL);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_model,
BCM2835_MAILBOX_TAG_GET_BOARD_MODEL );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->spec = buffer.get_board_model.body.resp.spec;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}
int
bcm2835_mailbox_get_board_revision(bcm2835_get_board_spec_entries* _entries)
int bcm2835_mailbox_get_board_revision(
bcm2835_get_board_spec_entries *_entries )
{
struct{
struct {
bcm2835_mbox_buf_hdr hdr;
bcm2835_mbox_tag_get_board_spec get_board_revision;
uint32_t end_tag;
}buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF(&buffer);
BCM2835_MBOX_INIT_TAG_NO_REQ(&buffer.get_board_revision,
BCM2835_MAILBOX_TAG_GET_BOARD_VERSION);
bcm2835_mailbox_buffer_flush_and_invalidate(&buffer, sizeof(&buffer));
if (bcm2835_mailbox_send_read_buffer(&buffer))
} buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
BCM2835_MBOX_INIT_BUF( &buffer );
BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_revision,
BCM2835_MAILBOX_TAG_GET_BOARD_VERSION );
bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) );
if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
return -1;
_entries->spec = buffer.get_board_revision.body.resp.spec;
if( !bcm2835_mailbox_buffer_suceeded(&buffer.hdr) )
if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
return -2;
return 0;
}