diff options
Diffstat (limited to 'bsps/arm/raspberrypi/start/vc.c')
| -rw-r--r-- | bsps/arm/raspberrypi/start/vc.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/bsps/arm/raspberrypi/start/vc.c b/bsps/arm/raspberrypi/start/vc.c new file mode 100644 index 0000000000..249ea1e9a2 --- /dev/null +++ b/bsps/arm/raspberrypi/start/vc.c @@ -0,0 +1,487 @@ +/** + * @file + * + * @ingroup raspberrypi_vc + * + * @brief video core support. + * + */ + +/* + * Copyright (c) 2015 Yang Qiao + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.rtems.org/license/LICENSE + * + */ +#include <pthread.h> + +#include <bsp.h> +#include <bsp/raspberrypi.h> +#include <bsp/mailbox.h> +#include <bsp/vc.h> +#include <libcpu/arm-cp15.h> +#include "vc_defines.h" + +#if ( RPI_L2_CACHE_ENABLE == 1 ) + #define BCM2835_VC_MEMORY_MAPPING 0x40000000 +#else + #define BCM2835_VC_MEMORY_MAPPING 0xC0000000 +#endif + +#define BCM2835_VC_MEMORY_MAPPING_MASK 0x3fffffff + +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 ); +} + +static inline int bcm2835_mailbox_send_read_buffer( void *buf ) +{ + RTEMS_COMPILER_MEMORY_BARRIER(); + raspberrypi_mailbox_write( BCM2835_MBOX_CHANNEL_PROP_AVC, + (unsigned int) buf + BCM2835_VC_MEMORY_MAPPING ); + raspberrypi_mailbox_read( BCM2835_MBOX_CHANNEL_PROP_AVC ); + RTEMS_COMPILER_MEMORY_BARRIER(); + return 0; +} + +/* + * When cache is enabled then content of buffer exchanged + * 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 +) +{ + rtems_cache_flush_multiple_data_lines( buf, size ); + rtems_cache_invalidate_multiple_data_lines( buf, size ); +} + +#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 ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_display_size get_display_size; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_display_size ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_init_frame_buffer( + bcm2835_init_frame_buffer_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_display_size set_display_size; + bcm2835_mbox_tag_virtual_size set_virtual_size; + bcm2835_mbox_tag_depth set_depth; + bcm2835_mbox_tag_pixel_order set_pixel_order; + bcm2835_mbox_tag_alpha_mode set_alpha_mode; + bcm2835_mbox_tag_virtual_offset set_virtual_offset; + bcm2835_mbox_tag_overscan set_overscan; + bcm2835_mbox_tag_allocate_buffer allocate_buffer; + bcm2835_mbox_tag_get_pitch get_pitch; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ); + 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 ); + buffer.set_depth.body.req.depth = _entries->depth; + 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 ); + 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 ); + 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 ); + 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 ); + 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 ) ) + 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; + _entries->base = buffer.allocate_buffer.body.resp.base; + _entries->base &= BCM2835_VC_MEMORY_MAPPING_MASK; + _entries->size = buffer.allocate_buffer.body.resp.size; + _entries->pixel_order = buffer.set_pixel_order.body.resp.pixel_order; + _entries->alpha_mode = buffer.set_alpha_mode.body.resp.alpha_mode; + _entries->voffset_x = buffer.set_virtual_offset.body.resp.voffset_x; + _entries->voffset_y = buffer.set_virtual_offset.body.resp.voffset_y; + _entries->overscan_left = buffer.set_overscan.body.resp.overscan_left; + _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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.allocate_buffer ) ) + return -3; + + if ( _entries->base < 0x100000 ) + return -4; + + return 0; +} + +int bcm2835_mailbox_get_pitch( bcm2835_get_pitch_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_pitch get_pitch; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_pitch ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_cmdline( bcm2835_get_cmdline_entries *_entries ) +{ + int i; + + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_cmd_line get_cmd_line; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ]; + } + + _entries->cmdline[ i ] = '\0'; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_cmd_line ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_power_state( bcm2835_set_power_state_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_power_state get_power_state; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG( &buffer.get_power_state, + BCM2835_MAILBOX_TAG_GET_POWER_STATE ); + buffer.get_power_state.body.req.dev_id = _entries->dev_id; + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->dev_id = buffer.get_power_state.body.resp.dev_id; + _entries->state = buffer.get_power_state.body.resp.state; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_power_state set_power_state; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + 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 ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_get_arm_memory( bcm2835_get_arm_memory_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_arm_memory get_arm_memory; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_arm_memory ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_vc_memory( bcm2835_get_vc_memory_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_vc_memory get_vc_memory; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_vc_memory ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_firmware_revision( + bcm2835_mailbox_get_fw_rev_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_fw_rev get_fw_rev; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_fw_rev ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_model( bcm2835_get_board_spec_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_spec get_board_model; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_board_model ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_revision( + bcm2835_get_board_spec_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_spec get_board_revision; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + 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 ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_board_revision ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_serial( + bcm2835_get_board_serial_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_serial get_board_serial; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_serial, + BCM2835_MAILBOX_TAG_GET_BOARD_SERIAL ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->board_serial = buffer.get_board_serial.body.resp.board_serial; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_get_clock_rate( + bcm2835_get_clock_rate_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_clock_rate get_clock_rate; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_clock_rate, + BCM2835_MAILBOX_TAG_GET_CLOCK_RATE ); + buffer.get_clock_rate.body.req.clock_id = _entries->clock_id; + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->clock_id = buffer.get_clock_rate.body.resp.clock_id; + _entries->clock_rate = buffer.get_clock_rate.body.resp.clock_rate; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} |