[109fc26] | 1 | /* |
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| 2 | * ata.c |
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| 3 | * |
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[a3d3d9a] | 4 | * ATA RTEMS driver. ATA driver is hardware independant implementation of |
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| 5 | * ATA-2 standart, working draft X3T10/0948D, revision 4c. ATA driver bases |
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[109fc26] | 6 | * on RTEMS IDE controller driver. |
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| 7 | * |
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| 8 | * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia |
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| 9 | * Authors: Eugeny S. Mints <Eugeny.Mints@oktet.ru> |
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| 10 | * |
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| 11 | * The license and distribution terms for this file may be |
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| 12 | * found in the file LICENSE in this distribution or at |
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[94365d9] | 13 | * http://www.rtems.com/license/LICENSE. |
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[a3d3d9a] | 14 | * |
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[109fc26] | 15 | * $Id$ |
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[a3d3d9a] | 16 | * |
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[109fc26] | 17 | */ |
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| 18 | #include <errno.h> |
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[4caeb10] | 19 | #include <rtems/chain.h> |
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[109fc26] | 20 | #include <assert.h> |
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| 21 | #include <string.h> /* for "memset" declaration */ |
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| 22 | |
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| 23 | #include <rtems/diskdevs.h> |
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| 24 | #include <rtems/blkdev.h> |
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| 25 | #include <libchip/ide_ctrl_io.h> |
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| 26 | #include <libchip/ide_ctrl_cfg.h> |
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| 27 | #include "ata_internal.h" |
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| 28 | #include <libchip/ata.h> |
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[f031251c] | 29 | /* #define DEBUG */ |
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[109fc26] | 30 | |
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| 31 | #ifdef DEBUG |
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| 32 | #include <stdio.h> |
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| 33 | #endif |
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| 34 | |
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[d5ed9e1] | 35 | /* |
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| 36 | * FIXME: make this better... |
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| 37 | * find out, which exception model is used |
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| 38 | * assume, that all i386 BSPs use new exception handling |
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| 39 | * assume, that some PPC BSPs use new exception handling |
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| 40 | * assume, that all other BSPs use old exception handling |
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| 41 | */ |
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| 42 | #if defined(_OLD_EXCEPTIONS) || (!defined(__i386__) && !defined(__PPC__)) |
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| 43 | |
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| 44 | #define ATA_USE_OLD_EXCEPTIONS |
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| 45 | #endif |
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| 46 | |
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| 47 | #if !defined(ATA_USE_OLD_EXCEPTIONS) |
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| 48 | #include <bsp/irq.h> |
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| 49 | #define ATA_IRQ_CHAIN_MAX_CNT 4 /* support up to 4 ATA devices */ |
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| 50 | typedef struct { |
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| 51 | rtems_irq_number name; |
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[b9c38ed] | 52 | rtems_chain_control irq_chain; |
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[d5ed9e1] | 53 | } ata_irq_chain_t; |
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| 54 | |
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| 55 | ata_irq_chain_t ata_irq_chain[ATA_IRQ_CHAIN_MAX_CNT]; |
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| 56 | int ata_irq_chain_cnt = 0; |
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| 57 | #endif |
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| 58 | |
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[109fc26] | 59 | #define SAFE |
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[3735f08] | 60 | #define SAFE_MUTEX |
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| 61 | |
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[109fc26] | 62 | #ifdef SAFE |
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[3735f08] | 63 | #ifdef SAFE_MUTEX |
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| 64 | static rtems_id ata_lock; |
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| 65 | static void |
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[142025c] | 66 | rtems_ata_lock (void) |
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[3735f08] | 67 | { |
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| 68 | rtems_status_code sc = rtems_semaphore_obtain (ata_lock, |
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| 69 | RTEMS_WAIT, |
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| 70 | RTEMS_NO_TIMEOUT); |
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| 71 | if (sc != RTEMS_SUCCESSFUL) |
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| 72 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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| 73 | } |
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| 74 | |
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| 75 | static void |
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[142025c] | 76 | rtems_ata_unlock (void) |
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[3735f08] | 77 | { |
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| 78 | rtems_status_code sc = rtems_semaphore_release (ata_lock); |
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| 79 | if (sc != RTEMS_SUCCESSFUL) |
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| 80 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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| 81 | } |
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| 82 | |
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| 83 | #define RTEMS_ATA_LOCK_ATTRIBS \ |
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| 84 | (RTEMS_PRIORITY | RTEMS_BINARY_SEMAPHORE | \ |
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| 85 | RTEMS_INHERIT_PRIORITY | RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL) |
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| 86 | |
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| 87 | #define PREEMPTION_KEY(key) |
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| 88 | #define DISABLE_PREEMPTION(key) rtems_ata_lock () |
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| 89 | #define ENABLE_PREEMPTION(key) rtems_ata_unlock () |
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| 90 | |
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| 91 | #else /* !SAFE_MUTEX */ |
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[109fc26] | 92 | typedef rtems_mode preemption_key; |
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| 93 | |
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[3735f08] | 94 | #define PREEMPTION_KEY(key) preemption_key key |
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| 95 | |
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| 96 | #define DISABLE_PREEMPTION(key) \ |
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[109fc26] | 97 | do { \ |
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| 98 | rtems_task_mode(RTEMS_NO_PREEMPT, RTEMS_PREEMPT_MASK, &(key)); \ |
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| 99 | } while (0) |
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| 100 | |
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| 101 | #define ENABLE_PREEMPTION(key) \ |
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| 102 | do { \ |
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| 103 | rtems_mode temp; \ |
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| 104 | rtems_task_mode((key), RTEMS_PREEMPT_MASK, &temp); \ |
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| 105 | } while (0) |
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[3735f08] | 106 | #endif |
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| 107 | #else /* !SAFE */ |
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[6640459d] | 108 | typedef bool preemption_key; |
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[109fc26] | 109 | |
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[3735f08] | 110 | #define PREEMPTION_KEY(key) preemption_key key |
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| 111 | |
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[109fc26] | 112 | #define DISABLE_PREEMPTION(key) \ |
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| 113 | do { \ |
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| 114 | (key) = _Thread_Executing->is_preemptible; \ |
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| 115 | _Thread_Executing->is_preemptible = 0; \ |
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| 116 | } while (0) |
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[a3d3d9a] | 117 | |
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[109fc26] | 118 | #define ENABLE_PREEMPTION(key) \ |
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| 119 | do { \ |
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| 120 | _Thread_Executing->is_preemptible = (key); \ |
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| 121 | if (_Thread_Evaluate_mode()) \ |
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| 122 | _Thread_Dispatch(); \ |
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| 123 | } while (0) |
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| 124 | |
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| 125 | #endif |
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| 126 | |
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| 127 | /* FIXME: case if ATA device is FLASH device need more attention */ |
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| 128 | #undef ATA_DEV_IS_FLASH_DISK |
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| 129 | |
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| 130 | /* Block device request with a single buffer provided */ |
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| 131 | typedef struct blkdev_request1 { |
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[3735f08] | 132 | rtems_blkdev_request req; |
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| 133 | rtems_blkdev_sg_buffer sg[1]; |
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[109fc26] | 134 | } blkdev_request1; |
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| 135 | |
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| 136 | |
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| 137 | /* Array indexed by controllers minor number */ |
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| 138 | static ata_ide_ctrl_t ata_ide_ctrls[IDE_CTRL_MAX_MINOR_NUMBER]; |
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| 139 | |
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| 140 | /* |
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[a3d3d9a] | 141 | * Mapping from ATA-minor numbers to |
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[109fc26] | 142 | * controller-minor and device on this controller. |
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| 143 | */ |
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| 144 | static ata_ide_dev_t ata_devs[2 * IDE_CTRL_MAX_MINOR_NUMBER]; |
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| 145 | static int ata_devs_number; |
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| 146 | |
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| 147 | /* Flag meaning that ATA driver has already been initialized */ |
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[6640459d] | 148 | static bool ata_initialized = false; |
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[109fc26] | 149 | |
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| 150 | |
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| 151 | /* task and queue used for asynchronous I/O operations */ |
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| 152 | static rtems_id ata_task_id; |
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| 153 | static rtems_id ata_queue_id; |
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| 154 | |
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[d5ed9e1] | 155 | #if defined (ATA_USE_OLD_EXCEPTIONS) |
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[109fc26] | 156 | /* Mapping of interrupt vectors to devices */ |
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[b9c38ed] | 157 | static rtems_chain_control ata_int_vec[ATA_MAX_RTEMS_INT_VEC_NUMBER + 1]; |
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[d5ed9e1] | 158 | #endif |
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[109fc26] | 159 | |
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| 160 | static void |
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| 161 | ata_process_request(rtems_device_minor_number ctrl_minor); |
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| 162 | |
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| 163 | static void |
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| 164 | ata_process_request_on_init_phase(rtems_device_minor_number ctrl_minor, |
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| 165 | ata_req_t *areq); |
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| 166 | |
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[a3d3d9a] | 167 | static void |
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| 168 | ata_add_to_controller_queue(rtems_device_minor_number ctrl_minor, |
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[109fc26] | 169 | ata_req_t *areq); |
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| 170 | |
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| 171 | /* |
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[a3d3d9a] | 172 | * read/write, open/close and ioctl are provided by general block device |
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[109fc26] | 173 | * driver. Only initialization and ata-specific ioctl are here. |
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| 174 | */ |
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| 175 | |
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[a3d3d9a] | 176 | /* ata_io_data_request -- |
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| 177 | * Form read/write request for an ATA device and enqueue it to |
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| 178 | * IDE controller. |
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| 179 | * |
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[109fc26] | 180 | * PARAMETERS: |
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| 181 | * device - device identifier |
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| 182 | * req - read/write request from block device driver |
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| 183 | * |
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| 184 | * RETURNS: |
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| 185 | * RTEMS_SUCCESSFUL on success, or error code if |
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[a3d3d9a] | 186 | * error occured |
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[109fc26] | 187 | */ |
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| 188 | static rtems_status_code |
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[3735f08] | 189 | ata_io_data_request(dev_t device, rtems_blkdev_request *req) |
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[109fc26] | 190 | { |
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| 191 | ata_req_t *areq; /* ATA request */ |
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[a3d3d9a] | 192 | rtems_device_minor_number rel_minor; /* relative minor which indexes |
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[109fc26] | 193 | * ata_devs array |
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| 194 | */ |
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| 195 | rtems_device_minor_number ctrl_minor; |
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[ee4f57d] | 196 | uint8_t dev; |
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[a3d3d9a] | 197 | |
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| 198 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
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[109fc26] | 199 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
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[a3d3d9a] | 200 | |
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[109fc26] | 201 | /* get controller which serves the ATA device */ |
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| 202 | ctrl_minor = ata_devs[rel_minor].ctrl_minor; |
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| 203 | |
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| 204 | /* get ATA device identifier (0 or 1) */ |
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| 205 | dev = ata_devs[rel_minor].device; |
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| 206 | |
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| 207 | areq = malloc(sizeof(ata_req_t)); |
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| 208 | if (areq == NULL) |
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| 209 | { |
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| 210 | return RTEMS_NO_MEMORY; |
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| 211 | } |
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[a3d3d9a] | 212 | |
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[109fc26] | 213 | areq->breq = req; |
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[f031251c] | 214 | areq->cnt = req->bufnum; |
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[109fc26] | 215 | areq->cbuf = 0; |
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| 216 | areq->pos = 0; |
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[a3d3d9a] | 217 | |
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| 218 | /* set up registers masks */ |
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[109fc26] | 219 | areq->regs.to_write = ATA_REGISTERS_POSITION; |
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| 220 | areq->regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_STATUS); |
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[a3d3d9a] | 221 | |
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[109fc26] | 222 | /* choose device on the controller for which the command will be issued */ |
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[a3d3d9a] | 223 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] = |
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[109fc26] | 224 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
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| 225 | |
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| 226 | /* Find ATA command and its type */ |
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| 227 | if (ATA_DEV_INFO(ctrl_minor, dev).mode_active & ATA_MODES_DMA) |
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| 228 | { |
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| 229 | /* XXX: never has been tested */ |
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| 230 | areq->type = ATA_COMMAND_TYPE_DMA; |
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[3735f08] | 231 | if (req->req == RTEMS_BLKDEV_REQ_READ) |
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[109fc26] | 232 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_READ_DMA; |
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[a3d3d9a] | 233 | else |
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[109fc26] | 234 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_WRITE_DMA; |
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| 235 | } |
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[a3d3d9a] | 236 | else |
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[109fc26] | 237 | { |
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[3735f08] | 238 | if (req->req == RTEMS_BLKDEV_REQ_READ) |
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[109fc26] | 239 | { |
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[3735f08] | 240 | #ifdef DEBUG |
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| 241 | printf("ata_io_data_request: type: READ: %d, %d\n", |
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[f031251c] | 242 | req->bufs[0].block, req->bufnum); |
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[3735f08] | 243 | #endif |
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[109fc26] | 244 | areq->type = ATA_COMMAND_TYPE_PIO_IN; |
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[a3d3d9a] | 245 | |
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| 246 | /* |
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| 247 | * choose command to issue: if the number of blocks to be |
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[109fc26] | 248 | * exchanged is greater then 1 and for ATA command READ MULTIPLE |
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| 249 | * data block consists of more then 1 sector choose READ MULTIPLE |
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| 250 | * otherwise READ SECTORS |
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| 251 | */ |
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[a3d3d9a] | 252 | areq->regs.regs[IDE_REGISTER_COMMAND] = |
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| 253 | ((ATA_DEV_INFO(ctrl_minor, dev).max_multiple) && |
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[f031251c] | 254 | (req->bufnum > 1) && |
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[a3d3d9a] | 255 | (ATA_DEV_INFO(ctrl_minor, dev).current_multiple > 1)) ? |
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| 256 | ATA_COMMAND_READ_MULTIPLE : |
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[109fc26] | 257 | ATA_COMMAND_READ_SECTORS; |
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| 258 | } |
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| 259 | else |
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| 260 | { |
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[3735f08] | 261 | #ifdef DEBUG |
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| 262 | printf("ata_io_data_request: type: WRITE: %d, %d\n", |
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[f031251c] | 263 | req->bufs[0].block, req->bufnum); |
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[3735f08] | 264 | #endif |
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[109fc26] | 265 | areq->type = ATA_COMMAND_TYPE_PIO_OUT; |
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| 266 | |
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[a3d3d9a] | 267 | /* |
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| 268 | * choose command to issue: if the number of blocks to be |
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[109fc26] | 269 | * exchanged is greater then 1 and for ATA command WRITE MULTIPLE |
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| 270 | * data block consists of more then 1 sector choose WRITE MULTIPLE |
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| 271 | * otherwise WRITE SECTORS |
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| 272 | */ |
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[a3d3d9a] | 273 | areq->regs.regs[IDE_REGISTER_COMMAND] = |
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[109fc26] | 274 | ((ATA_DEV_INFO(ctrl_minor, dev).max_multiple) && |
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[f031251c] | 275 | (req->bufnum > 1) && |
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[a3d3d9a] | 276 | (ATA_DEV_INFO(ctrl_minor, dev).current_multiple > 1)) ? |
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| 277 | ATA_COMMAND_WRITE_MULTIPLE : |
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[109fc26] | 278 | ATA_COMMAND_WRITE_SECTORS; |
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| 279 | } |
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| 280 | } |
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| 281 | |
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| 282 | /* |
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| 283 | * Fill position registers |
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| 284 | */ |
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| 285 | if (ATA_DEV_INFO(ctrl_minor, dev).lba_avaible) |
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| 286 | { |
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[3735f08] | 287 | uint32_t start = req->bufs[0].block; |
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| 288 | areq->regs.regs[IDE_REGISTER_LBA0] = (uint8_t)start; |
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| 289 | areq->regs.regs[IDE_REGISTER_LBA1] = (uint8_t)(start >> 8); |
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| 290 | areq->regs.regs[IDE_REGISTER_LBA2] = (uint8_t)(start >> 16); |
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| 291 | areq->regs.regs[IDE_REGISTER_LBA3] |= (uint8_t) (start >> 24); |
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[109fc26] | 292 | areq->regs.regs[IDE_REGISTER_LBA3] |= IDE_REGISTER_LBA3_L; |
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| 293 | } |
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| 294 | else |
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| 295 | { |
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[3735f08] | 296 | uint32_t count = req->bufs[0].block; |
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[109fc26] | 297 | |
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| 298 | areq->regs.regs[IDE_REGISTER_SECTOR_NUMBER] = |
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| 299 | (count % ATA_DEV_INFO(ctrl_minor, dev).sectors) + 1; |
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| 300 | |
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| 301 | /* now count = number of tracks: */ |
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| 302 | count /= ATA_DEV_INFO(ctrl_minor, dev).sectors; |
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[a3d3d9a] | 303 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
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[109fc26] | 304 | (count / ATA_DEV_INFO(ctrl_minor, dev).cylinders); |
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| 305 | |
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| 306 | /* now count = number of cylinders */ |
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| 307 | count %= ATA_DEV_INFO(ctrl_minor, dev).cylinders; |
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[509fec9c] | 308 | areq->regs.regs[IDE_REGISTER_CYLINDER_LOW] = (uint8_t)count; |
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| 309 | areq->regs.regs[IDE_REGISTER_CYLINDER_HIGH] = (uint8_t)(count >> 8); |
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[a3d3d9a] | 310 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] &= |
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[109fc26] | 311 | ~IDE_REGISTER_DEVICE_HEAD_L; |
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| 312 | } |
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| 313 | |
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| 314 | /* fill sector count register */ |
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[f031251c] | 315 | areq->regs.regs[IDE_REGISTER_SECTOR_COUNT] = areq->breq->bufnum; |
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[a3d3d9a] | 316 | |
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[109fc26] | 317 | /* add request to the queue of awaiting requests to the controller */ |
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| 318 | ata_add_to_controller_queue(ctrl_minor, areq); |
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[3735f08] | 319 | |
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[109fc26] | 320 | return RTEMS_SUCCESSFUL; |
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| 321 | } |
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| 322 | |
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[a3d3d9a] | 323 | /* ata_non_data_request -- |
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| 324 | * Form and serve request of NON DATA type for an ATA device. |
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[109fc26] | 325 | * Processing of NON DATA request is SYNChronous operation. |
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[a3d3d9a] | 326 | * |
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[109fc26] | 327 | * PARAMETERS: |
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| 328 | * device - device identifier |
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| 329 | * cmd - command |
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| 330 | * argp - arguments for command |
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| 331 | * |
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| 332 | * RETURNS: |
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| 333 | * RTEMS_SUCCESSFUL on success, or error code if |
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[a3d3d9a] | 334 | * error occured |
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[109fc26] | 335 | */ |
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| 336 | static rtems_status_code |
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| 337 | ata_non_data_request(dev_t device, int cmd, void *argp) |
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| 338 | { |
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| 339 | rtems_status_code rc; |
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| 340 | ata_req_t *areq; /* ATA request */ |
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| 341 | rtems_device_minor_number rel_minor; /* relative minor which indexes |
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| 342 | * ata_devs array |
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| 343 | */ |
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| 344 | rtems_device_minor_number ctrl_minor; |
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[ee4f57d] | 345 | uint8_t dev; |
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[a3d3d9a] | 346 | ata_queue_msg_t msg; |
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| 347 | |
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[109fc26] | 348 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
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[a3d3d9a] | 349 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
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[109fc26] | 350 | |
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| 351 | /* get controller which serves the ATA device */ |
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| 352 | ctrl_minor = ata_devs[rel_minor].ctrl_minor; |
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| 353 | |
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| 354 | /* get ATA device identifier (0 or 1) */ |
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| 355 | dev = ata_devs[rel_minor].device; |
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| 356 | |
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| 357 | /* form the request */ |
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| 358 | areq = malloc(sizeof(ata_req_t)); |
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| 359 | if (areq == NULL) |
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| 360 | { |
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| 361 | return RTEMS_NO_MEMORY; |
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| 362 | } |
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[a3d3d9a] | 363 | memset(areq, 0, sizeof(ata_req_t)); |
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[109fc26] | 364 | |
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| 365 | areq->type = ATA_COMMAND_TYPE_NON_DATA; |
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| 366 | areq->regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
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[a3d3d9a] | 367 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
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[109fc26] | 368 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
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| 369 | areq->breq = NULL; |
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| 370 | areq->regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_ERROR); |
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[a3d3d9a] | 371 | |
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| 372 | /* |
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| 373 | * depending on command fill command register and additional registers |
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[109fc26] | 374 | * which are needed for command execution |
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| 375 | */ |
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| 376 | switch(cmd) |
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[a3d3d9a] | 377 | { |
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[109fc26] | 378 | case ATAIO_SET_MULTIPLE_MODE: |
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[a3d3d9a] | 379 | areq->regs.regs[IDE_REGISTER_COMMAND] = |
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[109fc26] | 380 | ATA_COMMAND_SET_MULTIPLE_MODE; |
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[a3d3d9a] | 381 | areq->regs.to_write |= |
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[109fc26] | 382 | ATA_REGISTERS_VALUE(IDE_REGISTER_SECTOR_COUNT); |
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[509fec9c] | 383 | areq->regs.regs[IDE_REGISTER_SECTOR_COUNT] = *(uint8_t*)argp; |
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[109fc26] | 384 | break; |
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[a3d3d9a] | 385 | |
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[109fc26] | 386 | default: |
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| 387 | free(areq); |
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| 388 | return RTEMS_INVALID_NUMBER; |
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[a3d3d9a] | 389 | break; |
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| 390 | } |
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[109fc26] | 391 | |
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[a3d3d9a] | 392 | rc = rtems_semaphore_create(rtems_build_name('I', 'D', 'E', 'S'), |
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| 393 | 0, |
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| 394 | RTEMS_FIFO | RTEMS_COUNTING_SEMAPHORE | |
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[109fc26] | 395 | RTEMS_NO_INHERIT_PRIORITY | |
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| 396 | RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL, |
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| 397 | 0, |
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| 398 | &(areq->sema)); |
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| 399 | if (rc != RTEMS_SUCCESSFUL) |
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| 400 | { |
---|
| 401 | free(areq); |
---|
| 402 | return rc; |
---|
[a3d3d9a] | 403 | } |
---|
| 404 | |
---|
[109fc26] | 405 | ata_add_to_controller_queue(ctrl_minor, areq); |
---|
[a3d3d9a] | 406 | |
---|
[109fc26] | 407 | /* wait for request processing... */ |
---|
| 408 | rc = rtems_semaphore_obtain(areq->sema, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
| 409 | if (rc != RTEMS_SUCCESSFUL) |
---|
| 410 | { |
---|
| 411 | free(areq); |
---|
| 412 | return rc; |
---|
[a3d3d9a] | 413 | } |
---|
[109fc26] | 414 | |
---|
| 415 | rtems_semaphore_delete(areq->sema); |
---|
[a3d3d9a] | 416 | |
---|
| 417 | /* |
---|
| 418 | * if no error occurred and if necessary, update internal ata driver data |
---|
[109fc26] | 419 | * structures to reflect changes (in device configuration, for example) |
---|
[a3d3d9a] | 420 | */ |
---|
[109fc26] | 421 | if (areq->status == RTEMS_SUCCESSFUL) |
---|
| 422 | { |
---|
| 423 | switch(cmd) |
---|
[a3d3d9a] | 424 | { |
---|
[109fc26] | 425 | case ATAIO_SET_MULTIPLE_MODE: |
---|
[a3d3d9a] | 426 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple = |
---|
[509fec9c] | 427 | *(uint8_t*)argp; |
---|
[109fc26] | 428 | break; |
---|
[a3d3d9a] | 429 | |
---|
[109fc26] | 430 | default: |
---|
| 431 | rc = RTEMS_INVALID_NUMBER; |
---|
[a3d3d9a] | 432 | break; |
---|
| 433 | } |
---|
| 434 | } |
---|
| 435 | else |
---|
| 436 | { |
---|
| 437 | /* XXX: should be correct error processing: for ex, may be |
---|
[109fc26] | 438 | * ABRT and then we should return RTEMS_NOT_IMPLEMENTED |
---|
| 439 | */ |
---|
| 440 | rc = RTEMS_IO_ERROR; |
---|
[a3d3d9a] | 441 | } |
---|
| 442 | |
---|
[109fc26] | 443 | /* tell ata driver that controller ready to serve next request */ |
---|
| 444 | ATA_SEND_EVT(msg, ATA_MSG_SUCCESS_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 445 | |
---|
[109fc26] | 446 | return rc; |
---|
| 447 | } |
---|
| 448 | |
---|
[a3d3d9a] | 449 | /* ata_process_request -- |
---|
| 450 | * Get first request from controller's queue and process it. |
---|
| 451 | * |
---|
[109fc26] | 452 | * PARAMETERS: |
---|
| 453 | * ctrl_minor - controller identifier |
---|
| 454 | * |
---|
| 455 | * RETURNS: |
---|
[a3d3d9a] | 456 | * NONE |
---|
[109fc26] | 457 | */ |
---|
| 458 | static void |
---|
| 459 | ata_process_request(rtems_device_minor_number ctrl_minor) |
---|
| 460 | { |
---|
| 461 | ata_req_t *areq; |
---|
[ee4f57d] | 462 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
[109fc26] | 463 | ata_queue_msg_t msg; |
---|
[ee4f57d] | 464 | uint8_t i, dev; |
---|
| 465 | uint16_t val; |
---|
[a3d3d9a] | 466 | uint16_t data_bs; /* the number of 512-bytes sectors in one |
---|
| 467 | * data block |
---|
[109fc26] | 468 | */ |
---|
[a3d3d9a] | 469 | ISR_Level level; |
---|
[3735f08] | 470 | |
---|
[109fc26] | 471 | /* if no requests to controller then do nothing */ |
---|
[b9c38ed] | 472 | if (rtems_chain_is_empty(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 473 | return; |
---|
| 474 | |
---|
| 475 | /* get first request in the controller's queue */ |
---|
| 476 | _ISR_Disable(level); |
---|
| 477 | areq = (ata_req_t *)(ata_ide_ctrls[ctrl_minor].reqs.first); |
---|
| 478 | _ISR_Enable(level); |
---|
[a3d3d9a] | 479 | |
---|
[109fc26] | 480 | /* get ATA device identifier (0 or 1) */ |
---|
[a3d3d9a] | 481 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 482 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 483 | |
---|
| 484 | /* get data block size */ |
---|
[a3d3d9a] | 485 | data_bs = ATA_DEV_INFO(ctrl_minor, dev).current_multiple ? |
---|
| 486 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple : 1; |
---|
| 487 | |
---|
[109fc26] | 488 | /* execute device select protocol */ |
---|
[a3d3d9a] | 489 | ide_controller_write_register(ctrl_minor, IDE_REGISTER_DEVICE_HEAD, |
---|
[109fc26] | 490 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD]); |
---|
[a3d3d9a] | 491 | |
---|
[109fc26] | 492 | do { |
---|
| 493 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
[a3d3d9a] | 494 | } while ((byte & IDE_REGISTER_STATUS_BSY) || |
---|
[109fc26] | 495 | (!(byte & IDE_REGISTER_STATUS_DRDY))); |
---|
| 496 | |
---|
| 497 | /* fill in all necessary registers on the controller */ |
---|
| 498 | for (i=0; i< ATA_MAX_CMD_REG_OFFSET; i++) |
---|
| 499 | { |
---|
[ee4f57d] | 500 | uint32_t reg = (1 << i); |
---|
[109fc26] | 501 | if (areq->regs.to_write & reg) |
---|
| 502 | ide_controller_write_register(ctrl_minor, i, areq->regs.regs[i]); |
---|
| 503 | } |
---|
| 504 | |
---|
[3735f08] | 505 | #ifdef DEBUG |
---|
| 506 | printf("ata_process_request: type: %d\n", areq->type); |
---|
| 507 | #endif |
---|
| 508 | |
---|
[109fc26] | 509 | /* continue to execute ATA protocols depending on type of request */ |
---|
| 510 | if (areq->type == ATA_COMMAND_TYPE_PIO_OUT) |
---|
| 511 | { |
---|
| 512 | do { |
---|
[a3d3d9a] | 513 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 514 | &byte); |
---|
| 515 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
| 516 | |
---|
| 517 | if (byte & IDE_REGISTER_STATUS_DRQ) |
---|
| 518 | { |
---|
| 519 | ide_controller_write_data_block( |
---|
[a3d3d9a] | 520 | ctrl_minor, |
---|
[109fc26] | 521 | MIN(data_bs, areq->cnt) * ATA_SECTOR_SIZE, |
---|
| 522 | areq->breq->bufs, &areq->cbuf, |
---|
| 523 | &areq->pos); |
---|
| 524 | areq->cnt -= MIN(data_bs, areq->cnt); |
---|
[a3d3d9a] | 525 | } |
---|
[109fc26] | 526 | else |
---|
[a3d3d9a] | 527 | { |
---|
[6640459d] | 528 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 529 | { |
---|
| 530 | ide_controller_read_register( |
---|
[a3d3d9a] | 531 | ctrl_minor, |
---|
[109fc26] | 532 | IDE_REGISTER_ALTERNATE_STATUS_OFFSET, |
---|
| 533 | &val); |
---|
| 534 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
| 535 | &val); |
---|
| 536 | |
---|
[a3d3d9a] | 537 | ATA_SEND_EVT(msg, ATA_MSG_ERROR_EVT, ctrl_minor, |
---|
[109fc26] | 538 | RTEMS_IO_ERROR); |
---|
| 539 | } |
---|
[a3d3d9a] | 540 | } |
---|
[109fc26] | 541 | } |
---|
| 542 | |
---|
[6640459d] | 543 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 544 | { |
---|
| 545 | do { |
---|
[a3d3d9a] | 546 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 547 | &byte); |
---|
| 548 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
[a3d3d9a] | 549 | |
---|
[109fc26] | 550 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 551 | } |
---|
[109fc26] | 552 | } |
---|
| 553 | |
---|
[a3d3d9a] | 554 | /* ata_request_done -- |
---|
[109fc26] | 555 | * Extract request from controller queue, execute callback if necessary |
---|
| 556 | * and process next request for the controller. |
---|
[a3d3d9a] | 557 | * |
---|
[109fc26] | 558 | * PARAMETERS: |
---|
[a3d3d9a] | 559 | * areq - ATA request |
---|
[109fc26] | 560 | * ctrl_minor - controller identifier |
---|
| 561 | * status - status with which request has been done |
---|
| 562 | * error - error, if status != RTEMS_SUCCESSFUL |
---|
| 563 | * |
---|
| 564 | * RETURNS: |
---|
| 565 | * NONE |
---|
| 566 | */ |
---|
| 567 | static inline void |
---|
| 568 | ata_request_done(ata_req_t *areq, rtems_device_minor_number ctrl_minor, |
---|
| 569 | rtems_status_code status, int error) |
---|
| 570 | { |
---|
| 571 | assert(areq); |
---|
| 572 | |
---|
[3735f08] | 573 | #ifdef DEBUG |
---|
| 574 | printf("ata_request_done: entry\n"); |
---|
| 575 | #endif |
---|
| 576 | |
---|
[109fc26] | 577 | ATA_EXEC_CALLBACK(areq, status, error); |
---|
[b9c38ed] | 578 | rtems_chain_extract(&areq->link); |
---|
[3735f08] | 579 | |
---|
[b9c38ed] | 580 | if (!rtems_chain_is_empty(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 581 | { |
---|
[3735f08] | 582 | free(areq); |
---|
[109fc26] | 583 | ata_process_request(ctrl_minor); |
---|
| 584 | return; |
---|
| 585 | } |
---|
[3735f08] | 586 | |
---|
[3d14a45] | 587 | free(areq); |
---|
[3735f08] | 588 | |
---|
| 589 | #ifdef DEBUG |
---|
| 590 | printf("ata_request_done: exit\n"); |
---|
| 591 | #endif |
---|
[109fc26] | 592 | } |
---|
| 593 | |
---|
[a3d3d9a] | 594 | /* ata_non_data_request_done -- |
---|
[109fc26] | 595 | * Set up request status and release request's semaphore. |
---|
[a3d3d9a] | 596 | * |
---|
[109fc26] | 597 | * PARAMETERS: |
---|
[a3d3d9a] | 598 | * areq - ATA request |
---|
[109fc26] | 599 | * ctrl_minor - controller identifier |
---|
| 600 | * status - status with which request has been done |
---|
| 601 | * error - error, if status != RTEMS_SUCCESSFUL |
---|
| 602 | * |
---|
| 603 | * RETURNS: |
---|
| 604 | * NONE |
---|
| 605 | */ |
---|
| 606 | static inline void |
---|
[a3d3d9a] | 607 | ata_non_data_request_done(ata_req_t *areq, |
---|
[109fc26] | 608 | rtems_device_minor_number ctrl_minor, |
---|
| 609 | rtems_status_code status, int error) |
---|
| 610 | { |
---|
[92c70b9] | 611 | #ifdef DEBUG |
---|
| 612 | printf("ata_non_data_request_done: entry\n"); |
---|
| 613 | #endif |
---|
| 614 | |
---|
[109fc26] | 615 | areq->status = status; |
---|
| 616 | areq->error = error; |
---|
| 617 | rtems_semaphore_release(areq->sema); |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | |
---|
[a3d3d9a] | 621 | /* ata_add_to_controller_queue -- |
---|
[109fc26] | 622 | * Add request to the controller's queue. |
---|
[a3d3d9a] | 623 | * |
---|
[109fc26] | 624 | * PARAMETERS: |
---|
| 625 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 626 | * areq - ATA request |
---|
[109fc26] | 627 | * |
---|
| 628 | * RETURNS: |
---|
| 629 | * NONE |
---|
| 630 | */ |
---|
| 631 | static void |
---|
[a3d3d9a] | 632 | ata_add_to_controller_queue(rtems_device_minor_number ctrl_minor, |
---|
[109fc26] | 633 | ata_req_t *areq) |
---|
| 634 | { |
---|
[3735f08] | 635 | PREEMPTION_KEY(key); |
---|
| 636 | |
---|
| 637 | DISABLE_PREEMPTION(key); |
---|
| 638 | |
---|
[b9c38ed] | 639 | rtems_chain_append(&ata_ide_ctrls[ctrl_minor].reqs, &areq->link); |
---|
| 640 | if (rtems_chain_has_only_one_node(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 641 | { |
---|
[d5ed9e1] | 642 | |
---|
[109fc26] | 643 | ata_queue_msg_t msg; |
---|
| 644 | |
---|
[92c70b9] | 645 | #ifdef DEBUG_DOES_NOT_WORK_WITH_QEMU |
---|
[d5ed9e1] | 646 | uint16_t val; |
---|
[a3d3d9a] | 647 | /* |
---|
[109fc26] | 648 | * read IDE_REGISTER_ALTERNATE_STATUS instead IDE_REGISTER_STATUS |
---|
| 649 | * to prevent clearing of pending interrupt |
---|
| 650 | */ |
---|
[a3d3d9a] | 651 | ide_controller_read_register(ctrl_minor, |
---|
| 652 | IDE_REGISTER_ALTERNATE_STATUS, |
---|
[109fc26] | 653 | &val); |
---|
| 654 | if (val & IDE_REGISTER_STATUS_BSY) |
---|
| 655 | return; |
---|
| 656 | #endif |
---|
| 657 | ATA_SEND_EVT(msg, ATA_MSG_PROCESS_NEXT_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 658 | } |
---|
[3735f08] | 659 | |
---|
| 660 | ENABLE_PREEMPTION(key); |
---|
[a3d3d9a] | 661 | } |
---|
[109fc26] | 662 | |
---|
| 663 | |
---|
[a3d3d9a] | 664 | /* ata_interrupt_handler -- |
---|
[109fc26] | 665 | * ATA driver interrrupt handler. If interrrupt happend it mapped it to |
---|
| 666 | * controller (controllerS, if a number of controllers share one int line) |
---|
| 667 | * and generates ATA event(s). |
---|
[a3d3d9a] | 668 | * |
---|
[109fc26] | 669 | * PARAMETERS: |
---|
[a3d3d9a] | 670 | * vec - interrupt vector |
---|
[109fc26] | 671 | * |
---|
| 672 | * RETURNS: |
---|
| 673 | * NONE |
---|
| 674 | */ |
---|
[d5ed9e1] | 675 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 676 | rtems_isr |
---|
| 677 | ata_interrupt_handler(rtems_vector_number vec) |
---|
| 678 | { |
---|
[b9c38ed] | 679 | rtems_chain_node *the_node = ((rtems_chain_control *)(&ata_int_vec[vec]))->first; |
---|
[109fc26] | 680 | ata_queue_msg_t msg; |
---|
[ee4f57d] | 681 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
[a3d3d9a] | 682 | |
---|
[b9c38ed] | 683 | for ( ; !rtems_chain_is_tail(&ata_int_vec[vec], the_node) ; ) |
---|
[109fc26] | 684 | { |
---|
| 685 | /* if (1) - is temporary hack - currently I don't know how to identify |
---|
| 686 | * controller which asserted interrupt if few controllers share one |
---|
| 687 | * interrupt line |
---|
| 688 | */ |
---|
| 689 | if (1) |
---|
| 690 | { |
---|
| 691 | msg.ctrl_minor = ((ata_int_st_t *)the_node)->ctrl_minor; |
---|
[a3d3d9a] | 692 | ide_controller_read_register(msg.ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 693 | &byte); |
---|
[a3d3d9a] | 694 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, msg.ctrl_minor, 0); |
---|
[109fc26] | 695 | } |
---|
| 696 | the_node = the_node->next; |
---|
[a3d3d9a] | 697 | } |
---|
[109fc26] | 698 | } |
---|
[d5ed9e1] | 699 | #else |
---|
| 700 | void ata_interrupt_handler(rtems_irq_hdl_param handle) |
---|
| 701 | { |
---|
| 702 | int ata_irq_chain_index = (int) handle; |
---|
[b9c38ed] | 703 | rtems_chain_node *the_node = |
---|
[d5ed9e1] | 704 | ata_irq_chain[ata_irq_chain_index].irq_chain.last; |
---|
| 705 | ata_queue_msg_t msg; |
---|
| 706 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
| 707 | |
---|
| 708 | |
---|
[b9c38ed] | 709 | for ( ; !rtems_chain_is_tail(&ata_irq_chain[ata_irq_chain_index].irq_chain, |
---|
[d5ed9e1] | 710 | the_node) ; ) |
---|
| 711 | { |
---|
| 712 | /* if (1) - is temporary hack - currently I don't know how to identify |
---|
| 713 | * controller which asserted interrupt if few controllers share one |
---|
| 714 | * interrupt line |
---|
| 715 | */ |
---|
| 716 | if (1) |
---|
| 717 | { |
---|
| 718 | msg.ctrl_minor = ((ata_int_st_t *)the_node)->ctrl_minor; |
---|
| 719 | ide_controller_read_register(msg.ctrl_minor, IDE_REGISTER_STATUS, |
---|
| 720 | &byte); |
---|
| 721 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, msg.ctrl_minor, 0); |
---|
| 722 | } |
---|
| 723 | the_node = the_node->next; |
---|
| 724 | } |
---|
| 725 | } |
---|
| 726 | |
---|
| 727 | void ata_interrupt_on(const rtems_irq_connect_data *ptr) |
---|
| 728 | { |
---|
| 729 | |
---|
| 730 | /* enable ATA device interrupt */ |
---|
| 731 | ide_controller_write_register(0, |
---|
| 732 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 733 | 0x00 |
---|
| 734 | ); |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | |
---|
| 738 | void ata_interrupt_off(const rtems_irq_connect_data *ptr) |
---|
| 739 | { |
---|
| 740 | |
---|
| 741 | /* disable ATA device interrupt */ |
---|
| 742 | ide_controller_write_register(0, |
---|
| 743 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 744 | IDE_REGISTER_DEVICE_CONTROL_nIEN |
---|
| 745 | ); |
---|
| 746 | } |
---|
| 747 | |
---|
| 748 | |
---|
| 749 | int ata_interrupt_isOn(const rtems_irq_connect_data *ptr) |
---|
| 750 | { |
---|
| 751 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
| 752 | |
---|
| 753 | /* return int. status od ATA device */ |
---|
| 754 | ide_controller_read_register(0, |
---|
| 755 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 756 | &byte |
---|
| 757 | ); |
---|
| 758 | |
---|
| 759 | return !(byte & IDE_REGISTER_DEVICE_CONTROL_nIEN); |
---|
| 760 | } |
---|
| 761 | |
---|
| 762 | |
---|
| 763 | static rtems_irq_connect_data ata_irq_data = |
---|
| 764 | { |
---|
| 765 | |
---|
| 766 | 0, /* filled out before use... */ |
---|
[397060c] | 767 | ata_interrupt_handler,/* filled out before use... */ |
---|
| 768 | NULL, |
---|
| 769 | ata_interrupt_on, |
---|
| 770 | ata_interrupt_off, |
---|
| 771 | ata_interrupt_isOn |
---|
[d5ed9e1] | 772 | }; |
---|
| 773 | #endif |
---|
[109fc26] | 774 | |
---|
[a3d3d9a] | 775 | /* ata_pio_in_protocol -- |
---|
[109fc26] | 776 | * ATA PIO_IN protocol implementation, see specification |
---|
[a3d3d9a] | 777 | * |
---|
[109fc26] | 778 | * PARAMETERS: |
---|
| 779 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 780 | * areq - ATA request |
---|
[109fc26] | 781 | * |
---|
| 782 | * RETURNS: |
---|
| 783 | * NONE |
---|
| 784 | */ |
---|
| 785 | static inline void |
---|
| 786 | ata_pio_in_protocol(rtems_device_minor_number ctrl_minor, ata_req_t *areq) |
---|
| 787 | { |
---|
[ee4f57d] | 788 | uint16_t bs, val; |
---|
| 789 | uint8_t dev; |
---|
| 790 | uint32_t min_val; |
---|
[109fc26] | 791 | ata_queue_msg_t msg; |
---|
[a3d3d9a] | 792 | |
---|
| 793 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 794 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 795 | |
---|
[a3d3d9a] | 796 | bs = ATA_DEV_INFO(ctrl_minor, dev).current_multiple ? |
---|
| 797 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple : 1; |
---|
[109fc26] | 798 | min_val = MIN(bs, areq->cnt); |
---|
[a3d3d9a] | 799 | |
---|
| 800 | ide_controller_read_data_block(ctrl_minor, min_val * ATA_SECTOR_SIZE, |
---|
[109fc26] | 801 | areq->breq->bufs, &areq->cbuf, &areq->pos); |
---|
[a3d3d9a] | 802 | |
---|
[109fc26] | 803 | areq->cnt -= min_val; |
---|
| 804 | if (areq->cnt == 0) |
---|
| 805 | { |
---|
| 806 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL, RTEMS_SUCCESSFUL); |
---|
| 807 | } |
---|
[6640459d] | 808 | else if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 809 | { |
---|
| 810 | do { |
---|
| 811 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &val); |
---|
| 812 | } while (val & IDE_REGISTER_STATUS_BSY); |
---|
[a3d3d9a] | 813 | |
---|
[109fc26] | 814 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
| 815 | } |
---|
| 816 | } |
---|
| 817 | |
---|
[a3d3d9a] | 818 | /* ata_pio_out_protocol -- |
---|
[109fc26] | 819 | * ATA PIO_OUT protocol implementation, see specification |
---|
[a3d3d9a] | 820 | * |
---|
[109fc26] | 821 | * PARAMETERS: |
---|
| 822 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 823 | * areq - ATA request |
---|
[109fc26] | 824 | * |
---|
| 825 | * RETURNS: |
---|
| 826 | * NONE |
---|
| 827 | */ |
---|
| 828 | static inline void |
---|
| 829 | ata_pio_out_protocol(rtems_device_minor_number ctrl_minor, ata_req_t *areq) |
---|
| 830 | { |
---|
[ee4f57d] | 831 | uint16_t bs, val; |
---|
| 832 | uint8_t dev; |
---|
| 833 | uint32_t min_val; |
---|
[109fc26] | 834 | ata_queue_msg_t msg; |
---|
[a3d3d9a] | 835 | |
---|
[3735f08] | 836 | #ifdef DEBUG |
---|
| 837 | printf("ata_pio_out_protocol:\n"); |
---|
| 838 | #endif |
---|
| 839 | |
---|
[a3d3d9a] | 840 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 841 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 842 | |
---|
[a3d3d9a] | 843 | bs = ATA_DEV_INFO(ctrl_minor, dev).current_multiple ? |
---|
| 844 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple : 1; |
---|
[109fc26] | 845 | |
---|
[a3d3d9a] | 846 | min_val = MIN(bs, areq->cnt); |
---|
[109fc26] | 847 | |
---|
| 848 | if (areq->cnt == 0) |
---|
| 849 | { |
---|
| 850 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL, RTEMS_SUCCESSFUL); |
---|
| 851 | } |
---|
[a3d3d9a] | 852 | else |
---|
[109fc26] | 853 | { |
---|
| 854 | ide_controller_write_data_block(ctrl_minor, min_val * ATA_SECTOR_SIZE, |
---|
[a3d3d9a] | 855 | areq->breq->bufs, &areq->cbuf, |
---|
[109fc26] | 856 | &areq->pos); |
---|
| 857 | areq->cnt -= min_val; |
---|
[6640459d] | 858 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 859 | { |
---|
| 860 | do { |
---|
[a3d3d9a] | 861 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 862 | &val); |
---|
| 863 | } while (val & IDE_REGISTER_STATUS_BSY); |
---|
| 864 | |
---|
| 865 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
| 866 | } |
---|
| 867 | } |
---|
| 868 | } |
---|
| 869 | |
---|
[a3d3d9a] | 870 | /* ata_queue_task -- |
---|
[109fc26] | 871 | * Task which manages ATA driver events queue. |
---|
[a3d3d9a] | 872 | * |
---|
[109fc26] | 873 | * PARAMETERS: |
---|
| 874 | * arg - ignored |
---|
| 875 | * |
---|
| 876 | * RETURNS: |
---|
| 877 | * NONE |
---|
| 878 | * |
---|
| 879 | * NOTES: |
---|
[a3d3d9a] | 880 | * should be non-preemptive |
---|
[109fc26] | 881 | */ |
---|
| 882 | static rtems_task |
---|
| 883 | ata_queue_task(rtems_task_argument arg) |
---|
| 884 | { |
---|
| 885 | ata_queue_msg_t msg; |
---|
[41a1c334] | 886 | size_t size; |
---|
[109fc26] | 887 | ata_req_t *areq; |
---|
| 888 | rtems_device_minor_number ctrl_minor; |
---|
[ee4f57d] | 889 | uint16_t val; |
---|
| 890 | uint16_t val1; |
---|
[109fc26] | 891 | rtems_status_code rc; |
---|
| 892 | ISR_Level level; |
---|
[3735f08] | 893 | |
---|
| 894 | PREEMPTION_KEY(key); |
---|
[109fc26] | 895 | |
---|
[3735f08] | 896 | DISABLE_PREEMPTION(key); |
---|
| 897 | |
---|
[109fc26] | 898 | while (1) |
---|
| 899 | { |
---|
[3735f08] | 900 | ENABLE_PREEMPTION(key); |
---|
| 901 | |
---|
[109fc26] | 902 | /* get event which has happend */ |
---|
[a3d3d9a] | 903 | rc = rtems_message_queue_receive(ata_queue_id, &msg, &size, RTEMS_WAIT, |
---|
[109fc26] | 904 | RTEMS_NO_TIMEOUT); |
---|
| 905 | if (rc != RTEMS_SUCCESSFUL) |
---|
| 906 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
[a3d3d9a] | 907 | |
---|
[109fc26] | 908 | /* get controller on which event has happend */ |
---|
| 909 | ctrl_minor = msg.ctrl_minor; |
---|
[a3d3d9a] | 910 | |
---|
[3735f08] | 911 | DISABLE_PREEMPTION(key); |
---|
| 912 | |
---|
[109fc26] | 913 | /* get current request to the controller */ |
---|
[a3d3d9a] | 914 | _ISR_Disable(level); |
---|
[109fc26] | 915 | areq = (ata_req_t *)(ata_ide_ctrls[ctrl_minor].reqs.first); |
---|
| 916 | _ISR_Enable(level); |
---|
[3735f08] | 917 | |
---|
[109fc26] | 918 | switch(msg.type) |
---|
| 919 | { |
---|
| 920 | case ATA_MSG_PROCESS_NEXT_EVT: |
---|
| 921 | /* process next request in the controller queue */ |
---|
| 922 | ata_process_request(ctrl_minor); |
---|
| 923 | break; |
---|
| 924 | |
---|
| 925 | case ATA_MSG_SUCCESS_EVT: |
---|
[a3d3d9a] | 926 | /* |
---|
| 927 | * finish processing of current request with successful |
---|
| 928 | * status and start processing of the next request in the |
---|
[109fc26] | 929 | * controller queue |
---|
| 930 | */ |
---|
[a3d3d9a] | 931 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL, |
---|
[109fc26] | 932 | msg.error); |
---|
| 933 | break; |
---|
[a3d3d9a] | 934 | |
---|
[109fc26] | 935 | case ATA_MSG_ERROR_EVT: |
---|
[a3d3d9a] | 936 | /* |
---|
| 937 | * finish processing of current request with error |
---|
| 938 | * status and start processing of the next request in the |
---|
[109fc26] | 939 | * controller queue |
---|
| 940 | */ |
---|
[a3d3d9a] | 941 | ata_request_done(areq, ctrl_minor, RTEMS_UNSATISFIED, |
---|
[109fc26] | 942 | msg.error); |
---|
| 943 | break; |
---|
[a3d3d9a] | 944 | |
---|
[109fc26] | 945 | case ATA_MSG_GEN_EVT: |
---|
[a3d3d9a] | 946 | /* |
---|
| 947 | * continue processing of the current request to the |
---|
| 948 | * controller according to current request state and |
---|
[109fc26] | 949 | * ATA protocol |
---|
| 950 | */ |
---|
[a3d3d9a] | 951 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 952 | &val); |
---|
| 953 | /* process error case */ |
---|
| 954 | if (val & IDE_REGISTER_STATUS_ERR) |
---|
[a3d3d9a] | 955 | { |
---|
| 956 | ide_controller_read_register(ctrl_minor, |
---|
| 957 | IDE_REGISTER_ERROR, |
---|
[109fc26] | 958 | &val); |
---|
| 959 | if (areq->type == ATA_COMMAND_TYPE_NON_DATA) |
---|
[a3d3d9a] | 960 | ata_non_data_request_done(areq, ctrl_minor, |
---|
| 961 | RTEMS_UNSATISFIED, |
---|
[109fc26] | 962 | RTEMS_IO_ERROR); |
---|
[a3d3d9a] | 963 | else |
---|
| 964 | ata_request_done(areq, ctrl_minor, RTEMS_UNSATISFIED, |
---|
[109fc26] | 965 | RTEMS_IO_ERROR); |
---|
[a3d3d9a] | 966 | break; |
---|
[109fc26] | 967 | } |
---|
| 968 | |
---|
| 969 | switch(areq->type) |
---|
| 970 | { |
---|
| 971 | case ATA_COMMAND_TYPE_PIO_IN: |
---|
| 972 | ata_pio_in_protocol(ctrl_minor, areq); |
---|
| 973 | break; |
---|
[a3d3d9a] | 974 | |
---|
[109fc26] | 975 | case ATA_COMMAND_TYPE_PIO_OUT: |
---|
| 976 | ata_pio_out_protocol(ctrl_minor, areq); |
---|
| 977 | break; |
---|
[a3d3d9a] | 978 | |
---|
[109fc26] | 979 | case ATA_COMMAND_TYPE_NON_DATA: |
---|
[a3d3d9a] | 980 | ide_controller_read_register(ctrl_minor, |
---|
| 981 | IDE_REGISTER_ERROR, |
---|
[109fc26] | 982 | &val1); |
---|
| 983 | ata_non_data_request_done(areq, ctrl_minor, |
---|
| 984 | RTEMS_SUCCESSFUL, |
---|
| 985 | val1); |
---|
| 986 | break; |
---|
[a3d3d9a] | 987 | |
---|
[109fc26] | 988 | default: |
---|
[d5ed9e1] | 989 | #ifdef DEBUG |
---|
[109fc26] | 990 | printf("ata_queue_task: non-supported command type\n"); |
---|
[d5ed9e1] | 991 | #endif |
---|
[109fc26] | 992 | ata_request_done(areq, ctrl_minor, |
---|
| 993 | RTEMS_UNSATISFIED, |
---|
| 994 | RTEMS_NOT_IMPLEMENTED); |
---|
[a3d3d9a] | 995 | break; |
---|
[109fc26] | 996 | } |
---|
[a3d3d9a] | 997 | break; |
---|
[109fc26] | 998 | |
---|
| 999 | default: |
---|
[3735f08] | 1000 | #ifdef DEBUG |
---|
| 1001 | printf("ata_queue_task: internal error\n"); |
---|
| 1002 | rtems_task_delete (RTEMS_SELF); |
---|
| 1003 | #endif |
---|
[109fc26] | 1004 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
| 1005 | break; |
---|
| 1006 | } |
---|
| 1007 | } |
---|
| 1008 | } |
---|
| 1009 | |
---|
[a3d3d9a] | 1010 | /* ata_ioctl -- |
---|
[109fc26] | 1011 | * ATA driver ioctl interface. |
---|
[a3d3d9a] | 1012 | * |
---|
[109fc26] | 1013 | * PARAMETERS: |
---|
| 1014 | * device - device identifier |
---|
| 1015 | * cmd - command |
---|
| 1016 | * argp - arguments |
---|
| 1017 | * |
---|
| 1018 | * RETURNS: |
---|
| 1019 | * depend on 'cmd' |
---|
| 1020 | */ |
---|
[a3d3d9a] | 1021 | int |
---|
[109fc26] | 1022 | ata_ioctl(dev_t device, int cmd, void *argp) |
---|
| 1023 | { |
---|
| 1024 | rtems_status_code status; |
---|
| 1025 | rtems_device_minor_number rel_minor; |
---|
[a3d3d9a] | 1026 | |
---|
[109fc26] | 1027 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
---|
| 1028 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
---|
| 1029 | |
---|
[a3d3d9a] | 1030 | /* |
---|
[109fc26] | 1031 | * in most cases this means that device 'device' is not an registred ATA |
---|
| 1032 | * device |
---|
[a3d3d9a] | 1033 | */ |
---|
[109fc26] | 1034 | if (ata_devs[rel_minor].device == ATA_UNDEFINED_VALUE) |
---|
| 1035 | { |
---|
| 1036 | errno = ENODEV; |
---|
| 1037 | return -1; |
---|
[a3d3d9a] | 1038 | } |
---|
[109fc26] | 1039 | |
---|
[a3d3d9a] | 1040 | switch (cmd) |
---|
[109fc26] | 1041 | { |
---|
[3735f08] | 1042 | case RTEMS_BLKIO_REQUEST: |
---|
| 1043 | status = ata_io_data_request(device, (rtems_blkdev_request *)argp); |
---|
[109fc26] | 1044 | break; |
---|
[a3d3d9a] | 1045 | |
---|
[109fc26] | 1046 | case ATAIO_SET_MULTIPLE_MODE: |
---|
| 1047 | status = ata_non_data_request(device, cmd, argp); |
---|
| 1048 | break; |
---|
[a3d3d9a] | 1049 | |
---|
[3735f08] | 1050 | case RTEMS_BLKDEV_CAPABILITIES: |
---|
| 1051 | *((uint32_t*) argp) = RTEMS_BLKDEV_CAP_MULTISECTOR_CONT; |
---|
| 1052 | status = RTEMS_SUCCESSFUL; |
---|
| 1053 | break; |
---|
| 1054 | |
---|
[109fc26] | 1055 | default: |
---|
| 1056 | errno = EBADRQC; |
---|
| 1057 | return -1; |
---|
| 1058 | break; |
---|
| 1059 | } |
---|
| 1060 | |
---|
| 1061 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1062 | { |
---|
| 1063 | errno = EIO; |
---|
[a3d3d9a] | 1064 | return -1; |
---|
[109fc26] | 1065 | } |
---|
| 1066 | return 0; |
---|
| 1067 | } |
---|
| 1068 | |
---|
| 1069 | /* |
---|
| 1070 | * ata_initialize -- |
---|
| 1071 | * Initializes all ATA devices found on initialized IDE controllers. |
---|
[a3d3d9a] | 1072 | * |
---|
[109fc26] | 1073 | * PARAMETERS: |
---|
| 1074 | * major - device major number |
---|
| 1075 | * minor - device minor number |
---|
| 1076 | * args - arguments |
---|
| 1077 | * |
---|
| 1078 | * RETURNS: |
---|
| 1079 | * RTEMS_SUCCESSFUL on success, or error code if |
---|
[a3d3d9a] | 1080 | * error occured |
---|
[109fc26] | 1081 | */ |
---|
[a3d3d9a] | 1082 | rtems_device_driver |
---|
[3735f08] | 1083 | rtems_ata_initialize(rtems_device_major_number major, |
---|
| 1084 | rtems_device_minor_number minor_arg, |
---|
| 1085 | void *args) |
---|
[109fc26] | 1086 | { |
---|
[ee4f57d] | 1087 | uint32_t ctrl_minor; |
---|
[109fc26] | 1088 | rtems_status_code status; |
---|
| 1089 | ata_req_t areq; |
---|
[a3d3d9a] | 1090 | blkdev_request1 breq; |
---|
[ee4f57d] | 1091 | uint8_t i, dev = 0; |
---|
| 1092 | uint16_t *buffer; |
---|
| 1093 | uint16_t ec; |
---|
[109fc26] | 1094 | char name[ATA_MAX_NAME_LENGTH]; |
---|
| 1095 | dev_t device; |
---|
| 1096 | ata_int_st_t *int_st; |
---|
[c9b005a9] | 1097 | |
---|
[d5ed9e1] | 1098 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1099 | rtems_isr_entry old_isr; |
---|
[d5ed9e1] | 1100 | #else |
---|
| 1101 | int ata_irq_chain_use; |
---|
| 1102 | #endif |
---|
[109fc26] | 1103 | |
---|
| 1104 | if (ata_initialized) |
---|
| 1105 | return RTEMS_SUCCESSFUL; |
---|
[a3d3d9a] | 1106 | |
---|
[109fc26] | 1107 | /* initialization of disk devices library */ |
---|
| 1108 | status = rtems_disk_io_initialize(); |
---|
| 1109 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1110 | return status; |
---|
[a3d3d9a] | 1111 | |
---|
[3735f08] | 1112 | #ifdef SAFE |
---|
| 1113 | #ifdef SAFE_MUTEX |
---|
| 1114 | status = rtems_semaphore_create (rtems_build_name ('A', 'T', 'A', 'L'), |
---|
| 1115 | 1, RTEMS_ATA_LOCK_ATTRIBS, 0, |
---|
| 1116 | &ata_lock); |
---|
| 1117 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1118 | return status; |
---|
| 1119 | #endif |
---|
| 1120 | #endif |
---|
| 1121 | |
---|
[109fc26] | 1122 | /* create queue for asynchronous requests handling */ |
---|
| 1123 | status = rtems_message_queue_create( |
---|
| 1124 | rtems_build_name('A', 'T', 'A', 'Q'), |
---|
| 1125 | ATA_DRIVER_MESSAGE_QUEUE_SIZE, |
---|
| 1126 | sizeof(ata_queue_msg_t), |
---|
| 1127 | RTEMS_FIFO | RTEMS_LOCAL, |
---|
| 1128 | &ata_queue_id); |
---|
| 1129 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1130 | { |
---|
| 1131 | rtems_disk_io_done(); |
---|
| 1132 | return status; |
---|
[a3d3d9a] | 1133 | } |
---|
[109fc26] | 1134 | |
---|
[a3d3d9a] | 1135 | /* |
---|
| 1136 | * create ATA driver task, see comments for task implementation for |
---|
| 1137 | * details |
---|
[109fc26] | 1138 | */ |
---|
| 1139 | status = rtems_task_create( |
---|
| 1140 | rtems_build_name ('A', 'T', 'A', 'T'), |
---|
[3735f08] | 1141 | ((rtems_ata_driver_task_priority > 0) |
---|
| 1142 | ? rtems_ata_driver_task_priority |
---|
[c9b005a9] | 1143 | : ATA_DRIVER_TASK_DEFAULT_PRIORITY), |
---|
[109fc26] | 1144 | ATA_DRIVER_TASK_STACK_SIZE, |
---|
[3735f08] | 1145 | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_NO_ASR | |
---|
[109fc26] | 1146 | RTEMS_INTERRUPT_LEVEL(0), |
---|
| 1147 | RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL, |
---|
| 1148 | &ata_task_id); |
---|
| 1149 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1150 | { |
---|
| 1151 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1152 | rtems_disk_io_done(); |
---|
| 1153 | return status; |
---|
[a3d3d9a] | 1154 | } |
---|
| 1155 | |
---|
| 1156 | /* |
---|
| 1157 | * start ATA driver task. Actually the task will not start immediately - |
---|
[109fc26] | 1158 | * it will start only after multitasking support will be started |
---|
[a3d3d9a] | 1159 | */ |
---|
| 1160 | status = rtems_task_start(ata_task_id, ata_queue_task, 0); |
---|
[109fc26] | 1161 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1162 | { |
---|
| 1163 | rtems_task_delete(ata_task_id); |
---|
| 1164 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1165 | rtems_disk_io_done(); |
---|
| 1166 | return status; |
---|
[a3d3d9a] | 1167 | } |
---|
| 1168 | |
---|
[509fec9c] | 1169 | buffer = (uint16_t*)malloc(ATA_SECTOR_SIZE); |
---|
[109fc26] | 1170 | if (buffer == NULL) |
---|
| 1171 | { |
---|
| 1172 | rtems_task_delete(ata_task_id); |
---|
| 1173 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1174 | rtems_disk_io_done(); |
---|
| 1175 | return RTEMS_NO_MEMORY; |
---|
[a3d3d9a] | 1176 | } |
---|
| 1177 | |
---|
[109fc26] | 1178 | ata_devs_number = 0; |
---|
| 1179 | |
---|
| 1180 | for (i = 0; i < (2 * IDE_CTRL_MAX_MINOR_NUMBER); i++) |
---|
| 1181 | ata_devs[i].device = ATA_UNDEFINED_VALUE; |
---|
| 1182 | |
---|
[d5ed9e1] | 1183 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1184 | /* prepare ATA driver for handling interrupt driven devices */ |
---|
| 1185 | for (i = 0; i < ATA_MAX_RTEMS_INT_VEC_NUMBER; i++) |
---|
[b9c38ed] | 1186 | rtems_chain_initialize_empty(&ata_int_vec[i]); |
---|
[d5ed9e1] | 1187 | #else |
---|
| 1188 | for (i = 0; i < ATA_IRQ_CHAIN_MAX_CNT; i++) { |
---|
[b9c38ed] | 1189 | rtems_chain_initialize_empty(&(ata_irq_chain[i].irq_chain)); |
---|
[d5ed9e1] | 1190 | } |
---|
| 1191 | #endif |
---|
[109fc26] | 1192 | |
---|
[a3d3d9a] | 1193 | /* |
---|
| 1194 | * during ATA driver initialization EXECUTE DEVICE DIAGNOSTIC and |
---|
| 1195 | * IDENTIFY DEVICE ATA command should be issued; for these purposes ATA |
---|
| 1196 | * requests should be formed; ATA requests contain block device request, |
---|
[109fc26] | 1197 | * so form block device request first |
---|
| 1198 | */ |
---|
| 1199 | memset(&breq, 0, sizeof(blkdev_request1)); |
---|
| 1200 | breq.req.req_done = NULL; |
---|
| 1201 | breq.req.done_arg = &breq; |
---|
| 1202 | breq.req.bufnum = 1; |
---|
| 1203 | breq.req.bufs[0].length = ATA_SECTOR_SIZE; |
---|
| 1204 | breq.req.bufs[0].buffer = buffer; |
---|
| 1205 | |
---|
[a3d3d9a] | 1206 | /* |
---|
[109fc26] | 1207 | * for each presented IDE controller execute EXECUTE DEVICE DIAGNOSTIC |
---|
[a3d3d9a] | 1208 | * ATA command; for each found device execute IDENTIFY DEVICE ATA |
---|
| 1209 | * command |
---|
[109fc26] | 1210 | */ |
---|
| 1211 | for (ctrl_minor = 0; ctrl_minor < IDE_Controller_Count; ctrl_minor++) |
---|
| 1212 | if (IDE_Controller_Table[ctrl_minor].status == IDE_CTRL_INITIALIZED) |
---|
| 1213 | { |
---|
[b9c38ed] | 1214 | rtems_chain_initialize_empty(&ata_ide_ctrls[ctrl_minor].reqs); |
---|
[a3d3d9a] | 1215 | |
---|
[6640459d] | 1216 | if (IDE_Controller_Table[ctrl_minor].int_driven == true) |
---|
[109fc26] | 1217 | { |
---|
| 1218 | int_st = malloc(sizeof(ata_int_st_t)); |
---|
| 1219 | if (int_st == NULL) |
---|
| 1220 | { |
---|
| 1221 | free(buffer); |
---|
| 1222 | rtems_task_delete(ata_task_id); |
---|
| 1223 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1224 | rtems_disk_io_done(); |
---|
| 1225 | return RTEMS_NO_MEMORY; |
---|
[a3d3d9a] | 1226 | } |
---|
[109fc26] | 1227 | |
---|
| 1228 | int_st->ctrl_minor = ctrl_minor; |
---|
[d5ed9e1] | 1229 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1230 | status = rtems_interrupt_catch( |
---|
[a3d3d9a] | 1231 | ata_interrupt_handler, |
---|
| 1232 | IDE_Controller_Table[ctrl_minor].int_vec, |
---|
[109fc26] | 1233 | &old_isr); |
---|
[d5ed9e1] | 1234 | #else |
---|
| 1235 | /* |
---|
| 1236 | * FIXME: check existing entries. if they use the same |
---|
| 1237 | * IRQ name, then append int_st to respective chain |
---|
| 1238 | * otherwise, use new ata_irq_chain entry |
---|
| 1239 | */ |
---|
| 1240 | ata_irq_chain_use = -1; |
---|
| 1241 | for (i = 0; |
---|
| 1242 | ((i < ata_irq_chain_cnt) && |
---|
| 1243 | (ata_irq_chain_use < 0));i++) { |
---|
| 1244 | if (ata_irq_chain[i].name == |
---|
| 1245 | IDE_Controller_Table[ctrl_minor].int_vec) { |
---|
| 1246 | ata_irq_chain_use = i; |
---|
| 1247 | } |
---|
| 1248 | } |
---|
| 1249 | if (ata_irq_chain_use < 0) { |
---|
| 1250 | /* |
---|
| 1251 | * no match found, try to use new channel entry |
---|
| 1252 | */ |
---|
| 1253 | if (ata_irq_chain_cnt < ATA_IRQ_CHAIN_MAX_CNT) { |
---|
| 1254 | ata_irq_chain_use = ata_irq_chain_cnt++; |
---|
| 1255 | |
---|
| 1256 | ata_irq_chain[ata_irq_chain_use].name = |
---|
| 1257 | IDE_Controller_Table[ctrl_minor].int_vec; |
---|
| 1258 | ata_irq_data.name = |
---|
| 1259 | IDE_Controller_Table[ctrl_minor].int_vec; |
---|
| 1260 | ata_irq_data.hdl = ata_interrupt_handler; |
---|
[f610e83f] | 1261 | ata_irq_data.handle = (rtems_irq_hdl_param) ctrl_minor; |
---|
[d5ed9e1] | 1262 | |
---|
| 1263 | status = ((0 == BSP_install_rtems_irq_handler(&ata_irq_data)) |
---|
| 1264 | ? RTEMS_INVALID_NUMBER |
---|
| 1265 | : RTEMS_SUCCESSFUL); |
---|
| 1266 | } |
---|
| 1267 | else { |
---|
| 1268 | status = RTEMS_TOO_MANY; |
---|
| 1269 | } |
---|
| 1270 | } |
---|
| 1271 | #endif |
---|
[109fc26] | 1272 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1273 | { |
---|
| 1274 | free(int_st); |
---|
| 1275 | free(buffer); |
---|
| 1276 | rtems_task_delete(ata_task_id); |
---|
| 1277 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1278 | rtems_disk_io_done(); |
---|
| 1279 | return status; |
---|
[a3d3d9a] | 1280 | } |
---|
[d5ed9e1] | 1281 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[b9c38ed] | 1282 | rtems_chain_append( |
---|
[109fc26] | 1283 | &ata_int_vec[IDE_Controller_Table[ctrl_minor].int_vec], |
---|
| 1284 | &int_st->link); |
---|
[d5ed9e1] | 1285 | #else |
---|
[b9c38ed] | 1286 | rtems_chain_append( |
---|
[d5ed9e1] | 1287 | &(ata_irq_chain[ata_irq_chain_use].irq_chain), |
---|
| 1288 | &int_st->link); |
---|
| 1289 | #endif |
---|
[109fc26] | 1290 | |
---|
| 1291 | /* disable interrupts */ |
---|
[a3d3d9a] | 1292 | ide_controller_write_register(ctrl_minor, |
---|
| 1293 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
[109fc26] | 1294 | IDE_REGISTER_DEVICE_CONTROL_nIEN); |
---|
| 1295 | } |
---|
[92c70b9] | 1296 | #if 0 |
---|
[109fc26] | 1297 | /* |
---|
| 1298 | * Issue EXECUTE DEVICE DIAGNOSTIC ATA command for explore is |
---|
| 1299 | * there any ATA device on the controller. |
---|
| 1300 | */ |
---|
| 1301 | memset(&areq, 0, sizeof(ata_req_t)); |
---|
| 1302 | areq.type = ATA_COMMAND_TYPE_NON_DATA; |
---|
| 1303 | areq.regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
---|
[a3d3d9a] | 1304 | areq.regs.regs[IDE_REGISTER_COMMAND] = |
---|
[109fc26] | 1305 | ATA_COMMAND_EXECUTE_DEVICE_DIAGNOSTIC; |
---|
| 1306 | areq.regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_ERROR); |
---|
| 1307 | |
---|
[3735f08] | 1308 | areq.breq = (rtems_blkdev_request *)&breq; |
---|
[109fc26] | 1309 | |
---|
[a3d3d9a] | 1310 | /* |
---|
| 1311 | * Process the request. Special processing of requests on |
---|
| 1312 | * initialization phase is needed because at this moment there |
---|
[109fc26] | 1313 | * is no multitasking enviroment |
---|
| 1314 | */ |
---|
| 1315 | ata_process_request_on_init_phase(ctrl_minor, &areq); |
---|
| 1316 | |
---|
| 1317 | /* |
---|
| 1318 | * check status of I/O operation |
---|
| 1319 | */ |
---|
| 1320 | if (breq.req.status != RTEMS_SUCCESSFUL) |
---|
| 1321 | continue; |
---|
[92c70b9] | 1322 | #endif |
---|
| 1323 | breq.req.error = ATA_DEV0_PASSED_DEV1_PASSED_OR_NOT_PRSNT; |
---|
[a3d3d9a] | 1324 | /* disassemble returned diagnostic codes */ |
---|
[109fc26] | 1325 | if (breq.req.error == ATA_DEV0_PASSED_DEV1_PASSED_OR_NOT_PRSNT) |
---|
| 1326 | { |
---|
[6640459d] | 1327 | ATA_DEV_INFO(ctrl_minor, 0).present = true; |
---|
| 1328 | ATA_DEV_INFO(ctrl_minor,1).present = true; |
---|
[109fc26] | 1329 | } |
---|
| 1330 | else if (breq.req.error == ATA_DEV0_PASSED_DEV1_FAILED) |
---|
| 1331 | { |
---|
[6640459d] | 1332 | ATA_DEV_INFO(ctrl_minor,0).present = true; |
---|
| 1333 | ATA_DEV_INFO(ctrl_minor,1).present = false; |
---|
[109fc26] | 1334 | } |
---|
| 1335 | else if (breq.req.error < ATA_DEV1_PASSED_DEV0_FAILED) |
---|
| 1336 | { |
---|
[6640459d] | 1337 | ATA_DEV_INFO(ctrl_minor,0).present = false; |
---|
| 1338 | ATA_DEV_INFO(ctrl_minor,1).present = true; |
---|
[109fc26] | 1339 | } |
---|
| 1340 | else |
---|
| 1341 | { |
---|
[6640459d] | 1342 | ATA_DEV_INFO(ctrl_minor, 0).present = false; |
---|
| 1343 | ATA_DEV_INFO(ctrl_minor, 1).present = false; |
---|
[109fc26] | 1344 | } |
---|
| 1345 | |
---|
| 1346 | /* refine the returned codes */ |
---|
[6640459d] | 1347 | if (ATA_DEV_INFO(ctrl_minor, 1).present != false) |
---|
[109fc26] | 1348 | { |
---|
| 1349 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_ERROR, &ec); |
---|
| 1350 | if (ec & ATA_DEV1_PASSED_DEV0_FAILED) |
---|
[6640459d] | 1351 | ATA_DEV_INFO(ctrl_minor, 1).present = true; |
---|
[109fc26] | 1352 | else |
---|
[6640459d] | 1353 | ATA_DEV_INFO(ctrl_minor, 1).present = false; |
---|
[109fc26] | 1354 | } |
---|
| 1355 | |
---|
| 1356 | /* for each found ATA device obtain it configuration */ |
---|
| 1357 | for (dev = 0; dev < 2; dev++) |
---|
| 1358 | if (ATA_DEV_INFO(ctrl_minor, dev).present) |
---|
| 1359 | { |
---|
| 1360 | /* |
---|
[a3d3d9a] | 1361 | * Issue DEVICE IDENTIFY ATA command and get device |
---|
| 1362 | * configuration |
---|
[109fc26] | 1363 | */ |
---|
| 1364 | memset(&areq, 0, sizeof(ata_req_t)); |
---|
| 1365 | areq.type = ATA_COMMAND_TYPE_PIO_IN; |
---|
| 1366 | areq.regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
---|
[a3d3d9a] | 1367 | areq.regs.regs[IDE_REGISTER_COMMAND] = |
---|
[109fc26] | 1368 | ATA_COMMAND_IDENTIFY_DEVICE; |
---|
| 1369 | areq.regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_STATUS); |
---|
[3735f08] | 1370 | areq.breq = (rtems_blkdev_request *)&breq; |
---|
[a3d3d9a] | 1371 | |
---|
[f031251c] | 1372 | areq.cnt = breq.req.bufnum; |
---|
[109fc26] | 1373 | |
---|
| 1374 | areq.regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
---|
| 1375 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
---|
| 1376 | |
---|
[a3d3d9a] | 1377 | /* |
---|
| 1378 | * Process the request. Special processing of requests on |
---|
| 1379 | * initialization phase is needed because at this moment there |
---|
[109fc26] | 1380 | * is no multitasking enviroment |
---|
| 1381 | */ |
---|
| 1382 | ata_process_request_on_init_phase(ctrl_minor, &areq); |
---|
| 1383 | |
---|
| 1384 | /* check status of I/O operation */ |
---|
| 1385 | if (breq.req.status != RTEMS_SUCCESSFUL) |
---|
| 1386 | continue; |
---|
| 1387 | |
---|
| 1388 | /* |
---|
[a3d3d9a] | 1389 | * Parse returned device configuration and fill in ATA internal |
---|
[109fc26] | 1390 | * device info structure |
---|
| 1391 | */ |
---|
[a3d3d9a] | 1392 | ATA_DEV_INFO(ctrl_minor, dev).cylinders = |
---|
[109fc26] | 1393 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_CLNDS]); |
---|
[a3d3d9a] | 1394 | ATA_DEV_INFO(ctrl_minor, dev).heads = |
---|
[109fc26] | 1395 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_HEADS]); |
---|
[a3d3d9a] | 1396 | ATA_DEV_INFO(ctrl_minor, dev).sectors = |
---|
[109fc26] | 1397 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_SECS]); |
---|
[a3d3d9a] | 1398 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors = |
---|
| 1399 | (CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_USR_SECS0]) << 16) + |
---|
[109fc26] | 1400 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_USR_SECS1]); |
---|
[a3d3d9a] | 1401 | ATA_DEV_INFO(ctrl_minor, dev).lba_avaible = |
---|
[109fc26] | 1402 | (CF_LE_W(buffer[ATA_IDENT_WORD_CAPABILITIES]) >> 9) & 0x1; |
---|
[a3d3d9a] | 1403 | ATA_DEV_INFO(ctrl_minor, dev).max_multiple = |
---|
[509fec9c] | 1404 | (uint8_t) (CF_LE_W(buffer[ATA_IDENT_WORD_RW_MULT])); |
---|
[a3d3d9a] | 1405 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple = |
---|
| 1406 | (CF_LE_W(buffer[ATA_IDENT_WORD_MULT_SECS]) & 0x100) ? |
---|
[509fec9c] | 1407 | (uint8_t)(CF_LE_W(buffer[ATA_IDENT_WORD_MULT_SECS])) : |
---|
[109fc26] | 1408 | 0; |
---|
| 1409 | |
---|
[a3d3d9a] | 1410 | if ((CF_LE_W(buffer[ATA_IDENT_WORD_FIELD_VALIDITY]) & |
---|
[109fc26] | 1411 | ATA_IDENT_BIT_VALID) == 0) { |
---|
| 1412 | /* no "supported modes" info -> use default */ |
---|
| 1413 | ATA_DEV_INFO(ctrl_minor, dev).mode_active = ATA_MODES_PIO3; |
---|
| 1414 | } |
---|
| 1415 | else { |
---|
[bf474880] | 1416 | ATA_DEV_INFO(ctrl_minor, dev).modes_available = |
---|
[109fc26] | 1417 | ((CF_LE_W(buffer[64]) & 0x1) ? ATA_MODES_PIO3 : 0) | |
---|
| 1418 | ((CF_LE_W(buffer[64]) & 0x2) ? ATA_MODES_PIO4 : 0) | |
---|
| 1419 | ((CF_LE_W(buffer[63]) & 0x1) ? ATA_MODES_DMA0 : 0) | |
---|
[a3d3d9a] | 1420 | ((CF_LE_W(buffer[63]) & 0x2) ? |
---|
[109fc26] | 1421 | ATA_MODES_DMA0 | ATA_MODES_DMA1 : 0) | |
---|
[a3d3d9a] | 1422 | ((CF_LE_W(buffer[63]) & 0x4) ? |
---|
[109fc26] | 1423 | ATA_MODES_DMA0 | ATA_MODES_DMA1 | ATA_MODES_DMA2 : 0); |
---|
[bf474880] | 1424 | if (ATA_DEV_INFO(ctrl_minor, dev).modes_available == 0) |
---|
[109fc26] | 1425 | continue; |
---|
[a3d3d9a] | 1426 | /* |
---|
[109fc26] | 1427 | * choose most appropriate ATA device data I/O speed supported |
---|
| 1428 | * by the controller |
---|
| 1429 | */ |
---|
| 1430 | status = ide_controller_config_io_speed( |
---|
[a3d3d9a] | 1431 | ctrl_minor, |
---|
[bf474880] | 1432 | ATA_DEV_INFO(ctrl_minor, dev).modes_available); |
---|
[109fc26] | 1433 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1434 | continue; |
---|
[a3d3d9a] | 1435 | } |
---|
[109fc26] | 1436 | /* |
---|
| 1437 | * Ok, let register new ATA device in the system |
---|
| 1438 | */ |
---|
| 1439 | ata_devs[ata_devs_number].ctrl_minor = ctrl_minor; |
---|
| 1440 | ata_devs[ata_devs_number].device = dev; |
---|
| 1441 | |
---|
[c54764f9] | 1442 | /* The space leaves a hole for the character. */ |
---|
| 1443 | strcpy(name, "/dev/hd "); |
---|
| 1444 | name[7] = 'a' + 2 * ctrl_minor + dev; |
---|
| 1445 | |
---|
[109fc26] | 1446 | device = rtems_filesystem_make_dev_t( |
---|
[a3d3d9a] | 1447 | major, |
---|
| 1448 | (ata_devs_number * |
---|
[109fc26] | 1449 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE)); |
---|
| 1450 | |
---|
[a3d3d9a] | 1451 | status = rtems_disk_create_phys(device, ATA_SECTOR_SIZE, |
---|
| 1452 | ATA_DEV_INFO(ctrl_minor, dev).lba_avaible ? |
---|
| 1453 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors : |
---|
[109fc26] | 1454 | (ATA_DEV_INFO(ctrl_minor, dev).heads * |
---|
| 1455 | ATA_DEV_INFO(ctrl_minor, dev).cylinders * |
---|
| 1456 | ATA_DEV_INFO(ctrl_minor, dev).sectors), |
---|
[3735f08] | 1457 | (rtems_block_device_ioctl) ata_ioctl, name); |
---|
[109fc26] | 1458 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1459 | { |
---|
| 1460 | ata_devs[ata_devs_number].device = ATA_UNDEFINED_VALUE; |
---|
| 1461 | continue; |
---|
[a3d3d9a] | 1462 | } |
---|
[109fc26] | 1463 | ata_devs_number++; |
---|
| 1464 | } |
---|
[6640459d] | 1465 | if (IDE_Controller_Table[ctrl_minor].int_driven == true) |
---|
[a3d3d9a] | 1466 | { |
---|
| 1467 | ide_controller_write_register(ctrl_minor, |
---|
| 1468 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
[109fc26] | 1469 | 0x00); |
---|
| 1470 | } |
---|
| 1471 | } |
---|
| 1472 | |
---|
| 1473 | free(buffer); |
---|
[6640459d] | 1474 | ata_initialized = true; |
---|
[109fc26] | 1475 | return RTEMS_SUCCESSFUL; |
---|
| 1476 | } |
---|
| 1477 | |
---|
[a3d3d9a] | 1478 | /* ata_process_request_on_init_phase -- |
---|
| 1479 | * Process the ATA request during system initialization. Request |
---|
[109fc26] | 1480 | * processing is syncronous and doesn't use multiprocessing enviroment. |
---|
[a3d3d9a] | 1481 | * |
---|
[109fc26] | 1482 | * PARAMETERS: |
---|
| 1483 | * ctrl_minor - controller identifier |
---|
| 1484 | * areq - ATA request |
---|
| 1485 | * |
---|
| 1486 | * RETURNS: |
---|
[a3d3d9a] | 1487 | * NONE |
---|
[109fc26] | 1488 | */ |
---|
| 1489 | static void |
---|
| 1490 | ata_process_request_on_init_phase(rtems_device_minor_number ctrl_minor, |
---|
| 1491 | ata_req_t *areq) |
---|
| 1492 | { |
---|
[ee4f57d] | 1493 | uint16_t byte;/* emphasize that only 8 low bits is meaningful */ |
---|
| 1494 | uint8_t i, dev; |
---|
| 1495 | uint16_t val, val1; |
---|
[a3d3d9a] | 1496 | uint16_t data_bs; /* the number of 512 bytes sectors into one |
---|
| 1497 | * data block |
---|
[109fc26] | 1498 | */ |
---|
[89d19033] | 1499 | unsigned retries; |
---|
[109fc26] | 1500 | assert(areq); |
---|
[a3d3d9a] | 1501 | |
---|
| 1502 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 1503 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 1504 | |
---|
[a3d3d9a] | 1505 | data_bs = ATA_DEV_INFO(ctrl_minor, dev).current_multiple ? |
---|
| 1506 | ATA_DEV_INFO(ctrl_minor, dev).current_multiple : 1; |
---|
| 1507 | |
---|
| 1508 | ide_controller_write_register(ctrl_minor, IDE_REGISTER_DEVICE_HEAD, |
---|
[109fc26] | 1509 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD]); |
---|
[a3d3d9a] | 1510 | |
---|
[89d19033] | 1511 | retries = 0; |
---|
[109fc26] | 1512 | do { |
---|
| 1513 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
[89d19033] | 1514 | /* If device (on INIT, i.e. it should be idle) is neither |
---|
| 1515 | * busy nor ready something's fishy, i.e., there is probably |
---|
| 1516 | * no device present. |
---|
| 1517 | * I'd like to do a proper timeout but don't know of a portable |
---|
| 1518 | * timeout routine (w/o using multitasking / rtems_task_wake_after()) |
---|
| 1519 | */ |
---|
| 1520 | if ( ! (byte & (IDE_REGISTER_STATUS_BSY | IDE_REGISTER_STATUS_DRDY))) |
---|
| 1521 | retries++; |
---|
| 1522 | else |
---|
| 1523 | retries=0; |
---|
| 1524 | if ( 10000 == retries ) { |
---|
| 1525 | /* probably no drive connected */ |
---|
| 1526 | areq->breq->status = RTEMS_UNSATISFIED; |
---|
| 1527 | areq->breq->error = RTEMS_IO_ERROR; |
---|
| 1528 | return; |
---|
| 1529 | } |
---|
[a3d3d9a] | 1530 | } while ((byte & IDE_REGISTER_STATUS_BSY) || |
---|
[109fc26] | 1531 | (!(byte & IDE_REGISTER_STATUS_DRDY))); |
---|
| 1532 | |
---|
| 1533 | for (i=0; i< ATA_MAX_CMD_REG_OFFSET; i++) |
---|
| 1534 | { |
---|
[ee4f57d] | 1535 | uint32_t reg = (1 << i); |
---|
[109fc26] | 1536 | if (areq->regs.to_write & reg) |
---|
[a3d3d9a] | 1537 | ide_controller_write_register(ctrl_minor, i, |
---|
[109fc26] | 1538 | areq->regs.regs[i]); |
---|
| 1539 | } |
---|
| 1540 | |
---|
| 1541 | do { |
---|
| 1542 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
| 1543 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
| 1544 | |
---|
| 1545 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &val); |
---|
| 1546 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_ERROR, &val1); |
---|
| 1547 | |
---|
| 1548 | if (val & IDE_REGISTER_STATUS_ERR) |
---|
| 1549 | { |
---|
| 1550 | areq->breq->status = RTEMS_UNSATISFIED; |
---|
| 1551 | areq->breq->error = RTEMS_IO_ERROR; |
---|
| 1552 | return; |
---|
| 1553 | } |
---|
[a3d3d9a] | 1554 | |
---|
[109fc26] | 1555 | switch(areq->type) |
---|
| 1556 | { |
---|
| 1557 | case ATA_COMMAND_TYPE_PIO_IN: |
---|
| 1558 | ide_controller_read_data_block( |
---|
[a3d3d9a] | 1559 | ctrl_minor, |
---|
[109fc26] | 1560 | MIN(data_bs, areq->cnt) * ATA_SECTOR_SIZE, |
---|
| 1561 | areq->breq->bufs, &areq->cbuf, |
---|
| 1562 | &areq->pos); |
---|
[a3d3d9a] | 1563 | |
---|
[109fc26] | 1564 | areq->cnt -= MIN(data_bs, areq->cnt); |
---|
| 1565 | if (areq->cnt == 0) |
---|
| 1566 | { |
---|
| 1567 | areq->breq->status = RTEMS_SUCCESSFUL; |
---|
| 1568 | } |
---|
[a3d3d9a] | 1569 | else |
---|
[109fc26] | 1570 | { |
---|
[a3d3d9a] | 1571 | /* |
---|
| 1572 | * this shouldn't happend on the initialization |
---|
| 1573 | * phase! |
---|
[109fc26] | 1574 | */ |
---|
[a3d3d9a] | 1575 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
[109fc26] | 1576 | } |
---|
| 1577 | break; |
---|
[a3d3d9a] | 1578 | |
---|
[109fc26] | 1579 | case ATA_COMMAND_TYPE_NON_DATA: |
---|
| 1580 | areq->breq->status = RTEMS_SUCCESSFUL; |
---|
| 1581 | areq->breq->error = val1; |
---|
| 1582 | break; |
---|
[a3d3d9a] | 1583 | |
---|
[109fc26] | 1584 | default: |
---|
[d5ed9e1] | 1585 | #ifdef DEBUG |
---|
[109fc26] | 1586 | printf("ata_queue_task: non-supported command type\n"); |
---|
[d5ed9e1] | 1587 | #endif |
---|
[109fc26] | 1588 | areq->breq->status = RTEMS_UNSATISFIED; |
---|
| 1589 | areq->breq->error = RTEMS_NOT_IMPLEMENTED; |
---|
[a3d3d9a] | 1590 | break; |
---|
[109fc26] | 1591 | } |
---|
| 1592 | } |
---|