diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/gen5200/include/ata.h')
-rw-r--r-- | c/src/lib/libbsp/powerpc/gen5200/include/ata.h | 338 |
1 files changed, 0 insertions, 338 deletions
diff --git a/c/src/lib/libbsp/powerpc/gen5200/include/ata.h b/c/src/lib/libbsp/powerpc/gen5200/include/ata.h deleted file mode 100644 index 3d8ccfc49a..0000000000 --- a/c/src/lib/libbsp/powerpc/gen5200/include/ata.h +++ /dev/null @@ -1,338 +0,0 @@ -/* - * Copyright (c) 2010-2013 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * 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. - */ - -#ifndef GEN5200_ATA_H -#define GEN5200_ATA_H - -#include "bestcomm.h" - -#include <assert.h> - -#include <rtems.h> -#include <rtems/diskdevs.h> -#include <rtems/bdbuf.h> - -#include <libchip/ata_internal.h> -#include <libchip/ide_ctrl_io.h> -#include <libchip/ide_ctrl_cfg.h> - -#include <libcpu/powerpc-utility.h> - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -#define DCTRL_SRST BSP_BBIT8(5) -#define DCTRL_NIEN BSP_BBIT8(6) - -#define DAST_BSY BSP_BBIT8(0) -#define DAST_DRDY BSP_BBIT8(1) -#define DAST_DRQ BSP_BBIT8(4) -#define DAST_ERR BSP_BBIT8(7) - -#define DST_BSY BSP_BBIT16(0) -#define DST_DRDY BSP_BBIT16(1) -#define DST_DRQ BSP_BBIT16(4) -#define DST_ERR BSP_BBIT16(7) - -#define DDMA_HUT BSP_BBIT8(1) -#define DDMA_FR BSP_BBIT8(2) -#define DDMA_FE BSP_BBIT8(3) -#define DDMA_IE BSP_BBIT8(4) -#define DDMA_UDMA BSP_BBIT8(5) -#define DDMA_READ BSP_BBIT8(6) -#define DDMA_WRITE BSP_BBIT8(7) - -#define ATA_SECTOR_SHIFT 9 - -#define ATA_PER_TRANSFER_SECTOR_COUNT_MAX 256 - -typedef union { - struct { - uint8_t alternate_status; - uint8_t reserved_0[3]; - uint16_t data; - uint8_t reserved_1[2]; - uint8_t error; - uint8_t reserved_2[3]; - uint8_t sector_count; - uint8_t reserved_3[3]; - uint8_t sector; - uint8_t reserved_4[3]; - uint8_t cylinder_low; - uint8_t reserved_5[3]; - uint8_t cylinder_high; - uint8_t reserved_6[3]; - uint8_t head; - uint8_t reserved_7[3]; - uint16_t status; - uint8_t reserved_8[2]; - } read; - - struct { - uint8_t control; - uint8_t reserved_0[3]; - uint16_t data; - uint8_t reserved_1[2]; - uint8_t feature; - uint8_t reserved_2[3]; - uint8_t sector_count; - uint8_t reserved_3[3]; - uint8_t sector; - uint8_t reserved_4[3]; - uint8_t cylinder_low; - uint8_t reserved_5[3]; - uint8_t cylinder_high; - uint8_t reserved_6[3]; - uint8_t head; - uint8_t reserved_7[3]; - uint8_t command; - uint8_t dma_control; - uint8_t reserved_8[2]; - } write; -} ata_drive_registers; - -#define ATA ((volatile ata_drive_registers *) 0xf0003a5c) - -static inline bool ata_is_data_request(void) -{ - return (ATA->read.alternate_status & DAST_DRQ) != 0; -} - -static inline bool ata_is_drive_ready_for_selection(void) -{ - return (ATA->read.alternate_status & (DAST_BSY | DAST_DRQ)) == 0; -} - -static inline void ata_wait_400_nano_seconds(void) -{ - ATA->read.alternate_status; -} - -static inline void ata_wait_for_drive_ready(void) -{ - while ((ATA->read.alternate_status & (DAST_BSY | DAST_DRQ | DAST_DRDY)) != DAST_DRDY) { - /* Wait */ - } -} - -static inline void ata_wait_for_not_busy(void) -{ - ata_wait_400_nano_seconds(); - - while ((ATA->read.alternate_status & DAST_BSY) != 0) { - /* Wait */ - } -} - -static inline bool ata_wait_for_data_request(void) -{ - ata_wait_400_nano_seconds(); - - uint8_t alternate_status; - do { - alternate_status = ATA->read.alternate_status; - } while ((alternate_status & DAST_BSY) == DAST_BSY); - - return (alternate_status & (DAST_ERR | DAST_DRQ)) == DAST_DRQ; -} - -static inline bool ata_check_status(void) -{ - return (ATA->read.status & (DST_BSY | DST_ERR)) == 0; -} - -static inline void ata_clear_interrupts(void) -{ - ATA->read.status; -} - -static inline uint8_t ata_read_or_write_sectors_command(bool read) -{ - return read ? 0x20 : 0x30; -} - -static inline rtems_blkdev_bnum ata_max_transfer_count(rtems_blkdev_bnum sector_count) -{ - return sector_count > ATA_PER_TRANSFER_SECTOR_COUNT_MAX ? - ATA_PER_TRANSFER_SECTOR_COUNT_MAX - : sector_count; -} - -static inline void ata_flush_sector(uint16_t *begin) -{ - /* XXX: The dcbi operation does not work properly */ - rtems_cache_flush_multiple_data_lines(begin, ATA_SECTOR_SIZE); -} - -void ata_reset_device(void); - -bool ata_set_transfer_mode(uint8_t mode); - -bool ata_execute_io_command(uint8_t command, uint32_t lba, uint32_t sector_count); - -static inline bool ata_execute_io_command_with_sg(uint8_t command, const rtems_blkdev_sg_buffer *sg) -{ - uint32_t lba = sg->block; - uint32_t sector_count = sg->length / ATA_SECTOR_SIZE; - return ata_execute_io_command(command, lba, sector_count); -} - -typedef struct { - const rtems_blkdev_sg_buffer *sg; - - size_t sg_count; - - rtems_blkdev_bnum sg_buffer_offset_mask; - - int sg_index_shift; -} ata_sg_context; - -static inline void ata_sg_reset(ata_sg_context *self, const rtems_blkdev_sg_buffer *sg, size_t sg_count) -{ - self->sg = sg; - self->sg_count = sg_count; - uint32_t sectors_per_buffer = self->sg[0].length >> ATA_SECTOR_SHIFT; - self->sg_buffer_offset_mask = sectors_per_buffer - 1; - self->sg_index_shift = __builtin_ffs((int) sectors_per_buffer) - 1; -} - -static inline void ata_sg_create_default(ata_sg_context *self) -{ - ata_sg_reset(self, NULL, 0); -} - -static inline void ata_sg_create(ata_sg_context *self, const rtems_blkdev_sg_buffer *sg, size_t sg_count) -{ - ata_sg_reset(self, sg, sg_count); -} - -static inline rtems_blkdev_bnum ata_sg_get_start_sector(const ata_sg_context *self) -{ - return self->sg[0].block; -} - -static inline rtems_blkdev_bnum ata_sg_get_sector_count(const ata_sg_context *self) -{ - return (self->sg_buffer_offset_mask + 1) * self->sg_count; -} - -static inline uint16_t *ata_sg_get_sector_data_begin(const ata_sg_context *self, rtems_blkdev_bnum relative_sector) -{ - uint16_t *begin = (uint16_t *)(self->sg[relative_sector >> self->sg_index_shift].buffer); - - return begin + ((relative_sector & self->sg_buffer_offset_mask) << (ATA_SECTOR_SHIFT - 1)); -} - -static inline uint16_t *ata_sg_get_sector_data_end(const ata_sg_context *self, uint16_t *begin) -{ - return begin + ATA_SECTOR_SIZE / 2; -} - -typedef struct { - rtems_id lock; - - bool card_present; -} ata_driver; - -void ata_driver_create(ata_driver *self, const char *device_file_path, rtems_block_device_ioctl io_control); - -void ata_driver_destroy(ata_driver *self); - -static inline void ata_driver_lock(const ata_driver *self) -{ - rtems_status_code sc = rtems_semaphore_obtain(self->lock, RTEMS_WAIT, RTEMS_NO_TIMEOUT); - assert(sc == RTEMS_SUCCESSFUL); -} - -static inline void ata_driver_unlock(const ata_driver *self) -{ - rtems_status_code sc = rtems_semaphore_release(self->lock); - assert(sc == RTEMS_SUCCESSFUL); -} - -static inline bool ata_driver_is_card_present(const ata_driver *self) -{ - return self->card_present; -} - -static inline void ata_driver_io_request( - ata_driver *self, - rtems_blkdev_request *request, - bool (*transfer)(ata_driver *, bool, rtems_blkdev_sg_buffer *, size_t) -) -{ - assert(request->req == RTEMS_BLKDEV_REQ_READ || request->req == RTEMS_BLKDEV_REQ_WRITE); - bool read = request->req != RTEMS_BLKDEV_REQ_WRITE; - rtems_blkdev_sg_buffer *sg = &request->bufs[0]; - uint32_t sg_count = request->bufnum; - ata_driver_lock(self); - bool ok = (*transfer)(self, read, sg, sg_count); - ata_driver_unlock(self); - rtems_status_code sc = ok ? RTEMS_SUCCESSFUL : RTEMS_IO_ERROR; - rtems_blkdev_request_done(request, sc); -} - -static inline int ata_driver_io_control( - rtems_disk_device *dd, - uint32_t cmd, - void *arg, - bool (*transfer)(ata_driver *, bool, rtems_blkdev_sg_buffer *, size_t) -) -{ - ata_driver *self = (ata_driver *) rtems_disk_get_driver_data(dd); - - switch (cmd) { - case RTEMS_BLKIO_REQUEST: - ata_driver_io_request(self, (rtems_blkdev_request *) arg, transfer); - return 0; - case RTEMS_BLKIO_CAPABILITIES: - *(uint32_t *) arg = RTEMS_BLKDEV_CAP_MULTISECTOR_CONT; - return 0; - default: - return rtems_blkdev_ioctl(dd, cmd, arg); - } -} - -int ata_driver_io_control_pio_polled( - rtems_disk_device *dd, - uint32_t cmd, - void *arg -); - -typedef struct { - ata_driver super; - - bestcomm_task task; - - bool read; - - ata_sg_context sg_context; - - rtems_blkdev_bnum transfer_current; - - rtems_blkdev_bnum transfer_end; -} ata_driver_dma_pio_single; - -void ata_driver_dma_pio_single_create( - ata_driver_dma_pio_single *self, - const char *device_file_path, - TaskId task_index -); - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* GEN5200_ATA_H */ |