[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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| 29 | |
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[7357f566] | 30 | #define ATA_DEBUG 0 |
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| 31 | |
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| 32 | #if ATA_DEBUG |
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[109fc26] | 33 | #include <stdio.h> |
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[7357f566] | 34 | bool ata_trace; |
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| 35 | #define ata_printf if (ata_trace) printf |
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[109fc26] | 36 | #endif |
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| 37 | |
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[37f9717a] | 38 | /* |
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| 39 | * FIXME: make this better... |
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| 40 | * find out, which exception model is used |
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| 41 | * assume, that all i386 BSPs use new exception handling |
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| 42 | * assume, that some PPC BSPs use new exception handling |
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| 43 | * assume, that all other BSPs use old exception handling |
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| 44 | */ |
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| 45 | #if defined(_OLD_EXCEPTIONS) || (!defined(__i386__) && !defined(__PPC__)) |
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| 46 | |
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| 47 | #define ATA_USE_OLD_EXCEPTIONS |
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| 48 | #endif |
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| 49 | |
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| 50 | #if !defined(ATA_USE_OLD_EXCEPTIONS) |
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[d5ed9e1] | 51 | #include <bsp/irq.h> |
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| 52 | #define ATA_IRQ_CHAIN_MAX_CNT 4 /* support up to 4 ATA devices */ |
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| 53 | typedef struct { |
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| 54 | rtems_irq_number name; |
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[b9c38ed] | 55 | rtems_chain_control irq_chain; |
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[d5ed9e1] | 56 | } ata_irq_chain_t; |
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| 57 | |
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| 58 | ata_irq_chain_t ata_irq_chain[ATA_IRQ_CHAIN_MAX_CNT]; |
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| 59 | int ata_irq_chain_cnt = 0; |
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| 60 | #endif |
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| 61 | |
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[109fc26] | 62 | #define SAFE |
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[3735f08] | 63 | #define SAFE_MUTEX |
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| 64 | |
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[109fc26] | 65 | #ifdef SAFE |
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[3735f08] | 66 | #ifdef SAFE_MUTEX |
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| 67 | static rtems_id ata_lock; |
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| 68 | static void |
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[142025c] | 69 | rtems_ata_lock (void) |
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[3735f08] | 70 | { |
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| 71 | rtems_status_code sc = rtems_semaphore_obtain (ata_lock, |
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| 72 | RTEMS_WAIT, |
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| 73 | RTEMS_NO_TIMEOUT); |
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| 74 | if (sc != RTEMS_SUCCESSFUL) |
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| 75 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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| 76 | } |
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| 77 | |
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| 78 | static void |
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[142025c] | 79 | rtems_ata_unlock (void) |
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[3735f08] | 80 | { |
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| 81 | rtems_status_code sc = rtems_semaphore_release (ata_lock); |
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| 82 | if (sc != RTEMS_SUCCESSFUL) |
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| 83 | rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR); |
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| 84 | } |
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| 85 | |
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| 86 | #define RTEMS_ATA_LOCK_ATTRIBS \ |
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| 87 | (RTEMS_PRIORITY | RTEMS_BINARY_SEMAPHORE | \ |
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| 88 | RTEMS_INHERIT_PRIORITY | RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL) |
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| 89 | |
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| 90 | #define PREEMPTION_KEY(key) |
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| 91 | #define DISABLE_PREEMPTION(key) rtems_ata_lock () |
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| 92 | #define ENABLE_PREEMPTION(key) rtems_ata_unlock () |
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| 93 | |
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| 94 | #else /* !SAFE_MUTEX */ |
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[109fc26] | 95 | typedef rtems_mode preemption_key; |
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| 96 | |
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[3735f08] | 97 | #define PREEMPTION_KEY(key) preemption_key key |
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| 98 | |
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| 99 | #define DISABLE_PREEMPTION(key) \ |
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[109fc26] | 100 | do { \ |
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| 101 | rtems_task_mode(RTEMS_NO_PREEMPT, RTEMS_PREEMPT_MASK, &(key)); \ |
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| 102 | } while (0) |
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| 103 | |
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| 104 | #define ENABLE_PREEMPTION(key) \ |
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| 105 | do { \ |
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| 106 | rtems_mode temp; \ |
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| 107 | rtems_task_mode((key), RTEMS_PREEMPT_MASK, &temp); \ |
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| 108 | } while (0) |
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[3735f08] | 109 | #endif |
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| 110 | #else /* !SAFE */ |
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[6640459d] | 111 | typedef bool preemption_key; |
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[109fc26] | 112 | |
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[3735f08] | 113 | #define PREEMPTION_KEY(key) preemption_key key |
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| 114 | |
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[109fc26] | 115 | #define DISABLE_PREEMPTION(key) \ |
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| 116 | do { \ |
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| 117 | (key) = _Thread_Executing->is_preemptible; \ |
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| 118 | _Thread_Executing->is_preemptible = 0; \ |
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| 119 | } while (0) |
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[a3d3d9a] | 120 | |
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[109fc26] | 121 | #define ENABLE_PREEMPTION(key) \ |
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| 122 | do { \ |
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| 123 | _Thread_Executing->is_preemptible = (key); \ |
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| 124 | if (_Thread_Evaluate_mode()) \ |
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| 125 | _Thread_Dispatch(); \ |
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| 126 | } while (0) |
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| 127 | |
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| 128 | #endif |
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| 129 | |
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| 130 | /* FIXME: case if ATA device is FLASH device need more attention */ |
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| 131 | #undef ATA_DEV_IS_FLASH_DISK |
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| 132 | |
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| 133 | /* Block device request with a single buffer provided */ |
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| 134 | typedef struct blkdev_request1 { |
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[3735f08] | 135 | rtems_blkdev_request req; |
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| 136 | rtems_blkdev_sg_buffer sg[1]; |
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[109fc26] | 137 | } blkdev_request1; |
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| 138 | |
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| 139 | |
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| 140 | /* Array indexed by controllers minor number */ |
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| 141 | static ata_ide_ctrl_t ata_ide_ctrls[IDE_CTRL_MAX_MINOR_NUMBER]; |
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| 142 | |
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| 143 | /* |
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[a3d3d9a] | 144 | * Mapping from ATA-minor numbers to |
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[109fc26] | 145 | * controller-minor and device on this controller. |
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| 146 | */ |
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| 147 | static ata_ide_dev_t ata_devs[2 * IDE_CTRL_MAX_MINOR_NUMBER]; |
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| 148 | static int ata_devs_number; |
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| 149 | |
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| 150 | /* Flag meaning that ATA driver has already been initialized */ |
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[6640459d] | 151 | static bool ata_initialized = false; |
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[109fc26] | 152 | |
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| 153 | |
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| 154 | /* task and queue used for asynchronous I/O operations */ |
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| 155 | static rtems_id ata_task_id; |
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| 156 | static rtems_id ata_queue_id; |
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| 157 | |
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[37f9717a] | 158 | #if defined (ATA_USE_OLD_EXCEPTIONS) |
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[109fc26] | 159 | /* Mapping of interrupt vectors to devices */ |
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[b9c38ed] | 160 | static rtems_chain_control ata_int_vec[ATA_MAX_RTEMS_INT_VEC_NUMBER + 1]; |
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[d5ed9e1] | 161 | #endif |
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[109fc26] | 162 | |
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| 163 | static void |
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| 164 | ata_process_request(rtems_device_minor_number ctrl_minor); |
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| 165 | |
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| 166 | static void |
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| 167 | ata_process_request_on_init_phase(rtems_device_minor_number ctrl_minor, |
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| 168 | ata_req_t *areq); |
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| 169 | |
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[a3d3d9a] | 170 | static void |
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| 171 | ata_add_to_controller_queue(rtems_device_minor_number ctrl_minor, |
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[109fc26] | 172 | ata_req_t *areq); |
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| 173 | |
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| 174 | /* |
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[a3d3d9a] | 175 | * read/write, open/close and ioctl are provided by general block device |
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[109fc26] | 176 | * driver. Only initialization and ata-specific ioctl are here. |
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| 177 | */ |
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| 178 | |
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[a3d3d9a] | 179 | /* ata_io_data_request -- |
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| 180 | * Form read/write request for an ATA device and enqueue it to |
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| 181 | * IDE controller. |
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| 182 | * |
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[109fc26] | 183 | * PARAMETERS: |
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| 184 | * device - device identifier |
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| 185 | * req - read/write request from block device driver |
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| 186 | * |
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| 187 | * RETURNS: |
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| 188 | * RTEMS_SUCCESSFUL on success, or error code if |
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[a3d3d9a] | 189 | * error occured |
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[109fc26] | 190 | */ |
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| 191 | static rtems_status_code |
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[3735f08] | 192 | ata_io_data_request(dev_t device, rtems_blkdev_request *req) |
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[109fc26] | 193 | { |
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| 194 | ata_req_t *areq; /* ATA request */ |
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[a3d3d9a] | 195 | rtems_device_minor_number rel_minor; /* relative minor which indexes |
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[109fc26] | 196 | * ata_devs array |
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| 197 | */ |
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| 198 | rtems_device_minor_number ctrl_minor; |
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[ee4f57d] | 199 | uint8_t dev; |
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[a3d3d9a] | 200 | |
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| 201 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
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[109fc26] | 202 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
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[a3d3d9a] | 203 | |
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[109fc26] | 204 | /* get controller which serves the ATA device */ |
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| 205 | ctrl_minor = ata_devs[rel_minor].ctrl_minor; |
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| 206 | |
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| 207 | /* get ATA device identifier (0 or 1) */ |
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| 208 | dev = ata_devs[rel_minor].device; |
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| 209 | |
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| 210 | areq = malloc(sizeof(ata_req_t)); |
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| 211 | if (areq == NULL) |
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| 212 | { |
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| 213 | return RTEMS_NO_MEMORY; |
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| 214 | } |
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[a3d3d9a] | 215 | |
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[109fc26] | 216 | areq->breq = req; |
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[f031251c] | 217 | areq->cnt = req->bufnum; |
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[109fc26] | 218 | areq->cbuf = 0; |
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| 219 | areq->pos = 0; |
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[a3d3d9a] | 220 | |
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| 221 | /* set up registers masks */ |
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[109fc26] | 222 | areq->regs.to_write = ATA_REGISTERS_POSITION; |
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| 223 | areq->regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_STATUS); |
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[a3d3d9a] | 224 | |
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[109fc26] | 225 | /* choose device on the controller for which the command will be issued */ |
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[a3d3d9a] | 226 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] = |
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[109fc26] | 227 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
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| 228 | |
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| 229 | /* Find ATA command and its type */ |
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| 230 | if (ATA_DEV_INFO(ctrl_minor, dev).mode_active & ATA_MODES_DMA) |
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| 231 | { |
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| 232 | /* XXX: never has been tested */ |
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| 233 | areq->type = ATA_COMMAND_TYPE_DMA; |
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[3735f08] | 234 | if (req->req == RTEMS_BLKDEV_REQ_READ) |
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[109fc26] | 235 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_READ_DMA; |
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[a3d3d9a] | 236 | else |
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[109fc26] | 237 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_WRITE_DMA; |
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| 238 | } |
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[a3d3d9a] | 239 | else |
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[109fc26] | 240 | { |
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[3735f08] | 241 | if (req->req == RTEMS_BLKDEV_REQ_READ) |
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[109fc26] | 242 | { |
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| 243 | areq->type = ATA_COMMAND_TYPE_PIO_IN; |
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[7357f566] | 244 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_READ_SECTORS; |
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| 245 | #if ATA_DEBUG |
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| 246 | ata_printf("ata_io_data_request: type: READ: %lu, %lu cmd:%02x\n", |
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| 247 | req->bufs[0].block, req->bufnum, |
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| 248 | areq->regs.regs[IDE_REGISTER_COMMAND]); |
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[3495c57] | 249 | #endif |
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[109fc26] | 250 | } |
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| 251 | else |
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| 252 | { |
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| 253 | areq->type = ATA_COMMAND_TYPE_PIO_OUT; |
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[7357f566] | 254 | areq->regs.regs[IDE_REGISTER_COMMAND] = ATA_COMMAND_WRITE_SECTORS; |
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| 255 | #if ATA_DEBUG |
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| 256 | ata_printf("ata_io_data_request: type: WRITE: %lu, %lu cmd:%02x\n", |
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| 257 | req->bufs[0].block, req->bufnum, |
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| 258 | areq->regs.regs[IDE_REGISTER_COMMAND]); |
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[3495c57] | 259 | #endif |
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[109fc26] | 260 | } |
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| 261 | } |
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| 262 | |
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| 263 | /* |
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| 264 | * Fill position registers |
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| 265 | */ |
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| 266 | if (ATA_DEV_INFO(ctrl_minor, dev).lba_avaible) |
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| 267 | { |
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[3735f08] | 268 | uint32_t start = req->bufs[0].block; |
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| 269 | areq->regs.regs[IDE_REGISTER_LBA0] = (uint8_t)start; |
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| 270 | areq->regs.regs[IDE_REGISTER_LBA1] = (uint8_t)(start >> 8); |
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| 271 | areq->regs.regs[IDE_REGISTER_LBA2] = (uint8_t)(start >> 16); |
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[7357f566] | 272 | /* Set as the head register write above */ |
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[3735f08] | 273 | areq->regs.regs[IDE_REGISTER_LBA3] |= (uint8_t) (start >> 24); |
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[109fc26] | 274 | areq->regs.regs[IDE_REGISTER_LBA3] |= IDE_REGISTER_LBA3_L; |
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| 275 | } |
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| 276 | else |
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| 277 | { |
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[3735f08] | 278 | uint32_t count = req->bufs[0].block; |
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[109fc26] | 279 | |
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| 280 | areq->regs.regs[IDE_REGISTER_SECTOR_NUMBER] = |
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| 281 | (count % ATA_DEV_INFO(ctrl_minor, dev).sectors) + 1; |
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| 282 | |
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| 283 | /* now count = number of tracks: */ |
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| 284 | count /= ATA_DEV_INFO(ctrl_minor, dev).sectors; |
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[a3d3d9a] | 285 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
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[109fc26] | 286 | (count / ATA_DEV_INFO(ctrl_minor, dev).cylinders); |
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| 287 | |
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| 288 | /* now count = number of cylinders */ |
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| 289 | count %= ATA_DEV_INFO(ctrl_minor, dev).cylinders; |
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[509fec9c] | 290 | areq->regs.regs[IDE_REGISTER_CYLINDER_LOW] = (uint8_t)count; |
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| 291 | areq->regs.regs[IDE_REGISTER_CYLINDER_HIGH] = (uint8_t)(count >> 8); |
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[a3d3d9a] | 292 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] &= |
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[109fc26] | 293 | ~IDE_REGISTER_DEVICE_HEAD_L; |
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| 294 | } |
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| 295 | |
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[7357f566] | 296 | /* |
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| 297 | * Fill sector count register. We have a number of buffers (bufnum) which |
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| 298 | * can be of a specific length (bufs[0].length / ATA_SECTOR_SIZE). |
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| 299 | */ |
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| 300 | areq->regs.regs[IDE_REGISTER_SECTOR_COUNT] = |
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| 301 | areq->breq->bufnum * (areq->breq->bufs[0].length / ATA_SECTOR_SIZE); |
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[a3d3d9a] | 302 | |
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[109fc26] | 303 | /* add request to the queue of awaiting requests to the controller */ |
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| 304 | ata_add_to_controller_queue(ctrl_minor, areq); |
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[3495c57] | 305 | |
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[109fc26] | 306 | return RTEMS_SUCCESSFUL; |
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| 307 | } |
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| 308 | |
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[a3d3d9a] | 309 | /* ata_non_data_request -- |
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| 310 | * Form and serve request of NON DATA type for an ATA device. |
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[109fc26] | 311 | * Processing of NON DATA request is SYNChronous operation. |
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[a3d3d9a] | 312 | * |
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[109fc26] | 313 | * PARAMETERS: |
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| 314 | * device - device identifier |
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| 315 | * cmd - command |
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| 316 | * argp - arguments for command |
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| 317 | * |
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| 318 | * RETURNS: |
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| 319 | * RTEMS_SUCCESSFUL on success, or error code if |
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[a3d3d9a] | 320 | * error occured |
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[109fc26] | 321 | */ |
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| 322 | static rtems_status_code |
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[8509ec2] | 323 | ata_non_data_request(dev_t device, uint32_t cmd, void *argp) |
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[109fc26] | 324 | { |
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| 325 | rtems_status_code rc; |
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| 326 | ata_req_t *areq; /* ATA request */ |
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| 327 | rtems_device_minor_number rel_minor; /* relative minor which indexes |
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| 328 | * ata_devs array |
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| 329 | */ |
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| 330 | rtems_device_minor_number ctrl_minor; |
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[ee4f57d] | 331 | uint8_t dev; |
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[a3d3d9a] | 332 | ata_queue_msg_t msg; |
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| 333 | |
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[109fc26] | 334 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
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[a3d3d9a] | 335 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
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[109fc26] | 336 | |
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| 337 | /* get controller which serves the ATA device */ |
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| 338 | ctrl_minor = ata_devs[rel_minor].ctrl_minor; |
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| 339 | |
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| 340 | /* get ATA device identifier (0 or 1) */ |
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| 341 | dev = ata_devs[rel_minor].device; |
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| 342 | |
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| 343 | /* form the request */ |
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| 344 | areq = malloc(sizeof(ata_req_t)); |
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| 345 | if (areq == NULL) |
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| 346 | { |
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| 347 | return RTEMS_NO_MEMORY; |
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| 348 | } |
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[a3d3d9a] | 349 | memset(areq, 0, sizeof(ata_req_t)); |
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[109fc26] | 350 | |
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| 351 | areq->type = ATA_COMMAND_TYPE_NON_DATA; |
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| 352 | areq->regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
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[a3d3d9a] | 353 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
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[109fc26] | 354 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
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| 355 | areq->breq = NULL; |
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| 356 | areq->regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_ERROR); |
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[a3d3d9a] | 357 | |
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| 358 | /* |
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| 359 | * depending on command fill command register and additional registers |
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[109fc26] | 360 | * which are needed for command execution |
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| 361 | */ |
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| 362 | switch(cmd) |
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[a3d3d9a] | 363 | { |
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[109fc26] | 364 | case ATAIO_SET_MULTIPLE_MODE: |
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[a3d3d9a] | 365 | areq->regs.regs[IDE_REGISTER_COMMAND] = |
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[109fc26] | 366 | ATA_COMMAND_SET_MULTIPLE_MODE; |
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[a3d3d9a] | 367 | areq->regs.to_write |= |
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[109fc26] | 368 | ATA_REGISTERS_VALUE(IDE_REGISTER_SECTOR_COUNT); |
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[509fec9c] | 369 | areq->regs.regs[IDE_REGISTER_SECTOR_COUNT] = *(uint8_t*)argp; |
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[109fc26] | 370 | break; |
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[a3d3d9a] | 371 | |
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[109fc26] | 372 | default: |
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| 373 | free(areq); |
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| 374 | return RTEMS_INVALID_NUMBER; |
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[a3d3d9a] | 375 | break; |
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| 376 | } |
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[109fc26] | 377 | |
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[a3d3d9a] | 378 | rc = rtems_semaphore_create(rtems_build_name('I', 'D', 'E', 'S'), |
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| 379 | 0, |
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| 380 | RTEMS_FIFO | RTEMS_COUNTING_SEMAPHORE | |
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[109fc26] | 381 | RTEMS_NO_INHERIT_PRIORITY | |
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| 382 | RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL, |
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| 383 | 0, |
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| 384 | &(areq->sema)); |
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| 385 | if (rc != RTEMS_SUCCESSFUL) |
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| 386 | { |
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| 387 | free(areq); |
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| 388 | return rc; |
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[a3d3d9a] | 389 | } |
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| 390 | |
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[109fc26] | 391 | ata_add_to_controller_queue(ctrl_minor, areq); |
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[a3d3d9a] | 392 | |
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[109fc26] | 393 | /* wait for request processing... */ |
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| 394 | rc = rtems_semaphore_obtain(areq->sema, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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| 395 | if (rc != RTEMS_SUCCESSFUL) |
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| 396 | { |
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| 397 | free(areq); |
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| 398 | return rc; |
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[a3d3d9a] | 399 | } |
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[109fc26] | 400 | |
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| 401 | rtems_semaphore_delete(areq->sema); |
---|
[a3d3d9a] | 402 | |
---|
| 403 | /* |
---|
| 404 | * if no error occurred and if necessary, update internal ata driver data |
---|
[109fc26] | 405 | * structures to reflect changes (in device configuration, for example) |
---|
[a3d3d9a] | 406 | */ |
---|
[109fc26] | 407 | if (areq->status == RTEMS_SUCCESSFUL) |
---|
| 408 | { |
---|
| 409 | switch(cmd) |
---|
[a3d3d9a] | 410 | { |
---|
[109fc26] | 411 | case ATAIO_SET_MULTIPLE_MODE: |
---|
[7357f566] | 412 | /* invalid operation now */ |
---|
[109fc26] | 413 | default: |
---|
| 414 | rc = RTEMS_INVALID_NUMBER; |
---|
[a3d3d9a] | 415 | break; |
---|
| 416 | } |
---|
| 417 | } |
---|
| 418 | else |
---|
| 419 | { |
---|
| 420 | /* XXX: should be correct error processing: for ex, may be |
---|
[109fc26] | 421 | * ABRT and then we should return RTEMS_NOT_IMPLEMENTED |
---|
| 422 | */ |
---|
| 423 | rc = RTEMS_IO_ERROR; |
---|
[a3d3d9a] | 424 | } |
---|
| 425 | |
---|
[109fc26] | 426 | /* tell ata driver that controller ready to serve next request */ |
---|
| 427 | ATA_SEND_EVT(msg, ATA_MSG_SUCCESS_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 428 | |
---|
[109fc26] | 429 | return rc; |
---|
| 430 | } |
---|
| 431 | |
---|
[a3d3d9a] | 432 | /* ata_process_request -- |
---|
| 433 | * Get first request from controller's queue and process it. |
---|
| 434 | * |
---|
[109fc26] | 435 | * PARAMETERS: |
---|
| 436 | * ctrl_minor - controller identifier |
---|
| 437 | * |
---|
| 438 | * RETURNS: |
---|
[a3d3d9a] | 439 | * NONE |
---|
[109fc26] | 440 | */ |
---|
| 441 | static void |
---|
| 442 | ata_process_request(rtems_device_minor_number ctrl_minor) |
---|
| 443 | { |
---|
| 444 | ata_req_t *areq; |
---|
[ee4f57d] | 445 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
[109fc26] | 446 | ata_queue_msg_t msg; |
---|
[ee4f57d] | 447 | uint8_t i, dev; |
---|
| 448 | uint16_t val; |
---|
[a3d3d9a] | 449 | ISR_Level level; |
---|
[3495c57] | 450 | |
---|
[109fc26] | 451 | /* if no requests to controller then do nothing */ |
---|
[b9c38ed] | 452 | if (rtems_chain_is_empty(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 453 | return; |
---|
| 454 | |
---|
| 455 | /* get first request in the controller's queue */ |
---|
| 456 | _ISR_Disable(level); |
---|
| 457 | areq = (ata_req_t *)(ata_ide_ctrls[ctrl_minor].reqs.first); |
---|
| 458 | _ISR_Enable(level); |
---|
[a3d3d9a] | 459 | |
---|
[109fc26] | 460 | /* get ATA device identifier (0 or 1) */ |
---|
[a3d3d9a] | 461 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 462 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 463 | |
---|
| 464 | /* execute device select protocol */ |
---|
[a3d3d9a] | 465 | ide_controller_write_register(ctrl_minor, IDE_REGISTER_DEVICE_HEAD, |
---|
[109fc26] | 466 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD]); |
---|
[a3d3d9a] | 467 | |
---|
[109fc26] | 468 | do { |
---|
| 469 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
[a3d3d9a] | 470 | } while ((byte & IDE_REGISTER_STATUS_BSY) || |
---|
[109fc26] | 471 | (!(byte & IDE_REGISTER_STATUS_DRDY))); |
---|
| 472 | |
---|
| 473 | /* fill in all necessary registers on the controller */ |
---|
| 474 | for (i=0; i< ATA_MAX_CMD_REG_OFFSET; i++) |
---|
| 475 | { |
---|
[ee4f57d] | 476 | uint32_t reg = (1 << i); |
---|
[109fc26] | 477 | if (areq->regs.to_write & reg) |
---|
| 478 | ide_controller_write_register(ctrl_minor, i, areq->regs.regs[i]); |
---|
| 479 | } |
---|
| 480 | |
---|
[7357f566] | 481 | #if ATA_DEBUG |
---|
| 482 | ata_printf("ata_process_request: type: %d\n", areq->type); |
---|
[3735f08] | 483 | #endif |
---|
[3495c57] | 484 | |
---|
[109fc26] | 485 | /* continue to execute ATA protocols depending on type of request */ |
---|
| 486 | if (areq->type == ATA_COMMAND_TYPE_PIO_OUT) |
---|
| 487 | { |
---|
| 488 | do { |
---|
[a3d3d9a] | 489 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 490 | &byte); |
---|
| 491 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
| 492 | |
---|
| 493 | if (byte & IDE_REGISTER_STATUS_DRQ) |
---|
| 494 | { |
---|
[7357f566] | 495 | if (areq->cnt) |
---|
| 496 | { |
---|
| 497 | int ccbuf = areq->cbuf; |
---|
| 498 | ide_controller_write_data_block(ctrl_minor, |
---|
| 499 | areq->breq->bufs[0].length * areq->cnt, |
---|
| 500 | areq->breq->bufs, &areq->cbuf, |
---|
| 501 | &areq->pos); |
---|
| 502 | ccbuf = areq->cbuf - ccbuf; |
---|
| 503 | areq->cnt -= ccbuf; |
---|
| 504 | } |
---|
[a3d3d9a] | 505 | } |
---|
[109fc26] | 506 | else |
---|
[a3d3d9a] | 507 | { |
---|
[6640459d] | 508 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 509 | { |
---|
| 510 | ide_controller_read_register( |
---|
[a3d3d9a] | 511 | ctrl_minor, |
---|
[109fc26] | 512 | IDE_REGISTER_ALTERNATE_STATUS_OFFSET, |
---|
| 513 | &val); |
---|
| 514 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
| 515 | &val); |
---|
| 516 | |
---|
[a3d3d9a] | 517 | ATA_SEND_EVT(msg, ATA_MSG_ERROR_EVT, ctrl_minor, |
---|
[109fc26] | 518 | RTEMS_IO_ERROR); |
---|
| 519 | } |
---|
[a3d3d9a] | 520 | } |
---|
[109fc26] | 521 | } |
---|
| 522 | |
---|
[6640459d] | 523 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 524 | { |
---|
| 525 | do { |
---|
[a3d3d9a] | 526 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 527 | &byte); |
---|
| 528 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
[a3d3d9a] | 529 | |
---|
[109fc26] | 530 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 531 | } |
---|
[109fc26] | 532 | } |
---|
| 533 | |
---|
[a3d3d9a] | 534 | /* ata_request_done -- |
---|
[109fc26] | 535 | * Extract request from controller queue, execute callback if necessary |
---|
| 536 | * and process next request for the controller. |
---|
[a3d3d9a] | 537 | * |
---|
[109fc26] | 538 | * PARAMETERS: |
---|
[a3d3d9a] | 539 | * areq - ATA request |
---|
[109fc26] | 540 | * ctrl_minor - controller identifier |
---|
| 541 | * status - status with which request has been done |
---|
| 542 | * error - error, if status != RTEMS_SUCCESSFUL |
---|
| 543 | * |
---|
| 544 | * RETURNS: |
---|
| 545 | * NONE |
---|
| 546 | */ |
---|
| 547 | static inline void |
---|
| 548 | ata_request_done(ata_req_t *areq, rtems_device_minor_number ctrl_minor, |
---|
[5c587596] | 549 | rtems_status_code status) |
---|
[109fc26] | 550 | { |
---|
| 551 | assert(areq); |
---|
| 552 | |
---|
[7357f566] | 553 | #if ATA_DEBUG |
---|
| 554 | ata_printf("ata_request_done: entry\n"); |
---|
[3735f08] | 555 | #endif |
---|
[3495c57] | 556 | |
---|
[5c587596] | 557 | ATA_EXEC_CALLBACK(areq, status); |
---|
[b9c38ed] | 558 | rtems_chain_extract(&areq->link); |
---|
[3495c57] | 559 | |
---|
[b9c38ed] | 560 | if (!rtems_chain_is_empty(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 561 | { |
---|
[3735f08] | 562 | free(areq); |
---|
[109fc26] | 563 | ata_process_request(ctrl_minor); |
---|
| 564 | return; |
---|
| 565 | } |
---|
[3495c57] | 566 | |
---|
[3d14a45] | 567 | free(areq); |
---|
[3495c57] | 568 | |
---|
[7357f566] | 569 | #if ATA_DEBUG |
---|
| 570 | ata_printf("ata_request_done: exit\n"); |
---|
[3735f08] | 571 | #endif |
---|
[109fc26] | 572 | } |
---|
| 573 | |
---|
[a3d3d9a] | 574 | /* ata_non_data_request_done -- |
---|
[109fc26] | 575 | * Set up request status and release request's semaphore. |
---|
[a3d3d9a] | 576 | * |
---|
[109fc26] | 577 | * PARAMETERS: |
---|
[a3d3d9a] | 578 | * areq - ATA request |
---|
[109fc26] | 579 | * ctrl_minor - controller identifier |
---|
| 580 | * status - status with which request has been done |
---|
| 581 | * error - error, if status != RTEMS_SUCCESSFUL |
---|
| 582 | * |
---|
| 583 | * RETURNS: |
---|
| 584 | * NONE |
---|
| 585 | */ |
---|
| 586 | static inline void |
---|
[a3d3d9a] | 587 | ata_non_data_request_done(ata_req_t *areq, |
---|
[109fc26] | 588 | rtems_device_minor_number ctrl_minor, |
---|
[5c587596] | 589 | rtems_status_code status, int info) |
---|
[109fc26] | 590 | { |
---|
[7357f566] | 591 | #if ATA_DEBUG |
---|
| 592 | ata_printf("ata_non_data_request_done: entry\n"); |
---|
[92c70b9] | 593 | #endif |
---|
[3495c57] | 594 | |
---|
[109fc26] | 595 | areq->status = status; |
---|
[5c587596] | 596 | areq->info = info; |
---|
[109fc26] | 597 | rtems_semaphore_release(areq->sema); |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | |
---|
[a3d3d9a] | 601 | /* ata_add_to_controller_queue -- |
---|
[109fc26] | 602 | * Add request to the controller's queue. |
---|
[a3d3d9a] | 603 | * |
---|
[109fc26] | 604 | * PARAMETERS: |
---|
| 605 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 606 | * areq - ATA request |
---|
[109fc26] | 607 | * |
---|
| 608 | * RETURNS: |
---|
| 609 | * NONE |
---|
| 610 | */ |
---|
| 611 | static void |
---|
[a3d3d9a] | 612 | ata_add_to_controller_queue(rtems_device_minor_number ctrl_minor, |
---|
[109fc26] | 613 | ata_req_t *areq) |
---|
| 614 | { |
---|
[3735f08] | 615 | PREEMPTION_KEY(key); |
---|
[3495c57] | 616 | |
---|
[3735f08] | 617 | DISABLE_PREEMPTION(key); |
---|
[3495c57] | 618 | |
---|
[b9c38ed] | 619 | rtems_chain_append(&ata_ide_ctrls[ctrl_minor].reqs, &areq->link); |
---|
| 620 | if (rtems_chain_has_only_one_node(&ata_ide_ctrls[ctrl_minor].reqs)) |
---|
[109fc26] | 621 | { |
---|
[d5ed9e1] | 622 | |
---|
[109fc26] | 623 | ata_queue_msg_t msg; |
---|
| 624 | |
---|
[7357f566] | 625 | #if ATA_DEBUG_DOES_NOT_WORK_WITH_QEMU |
---|
[d5ed9e1] | 626 | uint16_t val; |
---|
[a3d3d9a] | 627 | /* |
---|
[109fc26] | 628 | * read IDE_REGISTER_ALTERNATE_STATUS instead IDE_REGISTER_STATUS |
---|
| 629 | * to prevent clearing of pending interrupt |
---|
| 630 | */ |
---|
[a3d3d9a] | 631 | ide_controller_read_register(ctrl_minor, |
---|
| 632 | IDE_REGISTER_ALTERNATE_STATUS, |
---|
[109fc26] | 633 | &val); |
---|
| 634 | if (val & IDE_REGISTER_STATUS_BSY) |
---|
| 635 | return; |
---|
| 636 | #endif |
---|
| 637 | ATA_SEND_EVT(msg, ATA_MSG_PROCESS_NEXT_EVT, ctrl_minor, 0); |
---|
[a3d3d9a] | 638 | } |
---|
[3735f08] | 639 | |
---|
| 640 | ENABLE_PREEMPTION(key); |
---|
[a3d3d9a] | 641 | } |
---|
[109fc26] | 642 | |
---|
| 643 | |
---|
[a3d3d9a] | 644 | /* ata_interrupt_handler -- |
---|
[109fc26] | 645 | * ATA driver interrrupt handler. If interrrupt happend it mapped it to |
---|
| 646 | * controller (controllerS, if a number of controllers share one int line) |
---|
| 647 | * and generates ATA event(s). |
---|
[a3d3d9a] | 648 | * |
---|
[109fc26] | 649 | * PARAMETERS: |
---|
[a3d3d9a] | 650 | * vec - interrupt vector |
---|
[109fc26] | 651 | * |
---|
| 652 | * RETURNS: |
---|
| 653 | * NONE |
---|
| 654 | */ |
---|
[37f9717a] | 655 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 656 | rtems_isr |
---|
| 657 | ata_interrupt_handler(rtems_vector_number vec) |
---|
| 658 | { |
---|
[b9c38ed] | 659 | rtems_chain_node *the_node = ((rtems_chain_control *)(&ata_int_vec[vec]))->first; |
---|
[109fc26] | 660 | ata_queue_msg_t msg; |
---|
[ee4f57d] | 661 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
[a3d3d9a] | 662 | |
---|
[b9c38ed] | 663 | for ( ; !rtems_chain_is_tail(&ata_int_vec[vec], the_node) ; ) |
---|
[109fc26] | 664 | { |
---|
| 665 | /* if (1) - is temporary hack - currently I don't know how to identify |
---|
| 666 | * controller which asserted interrupt if few controllers share one |
---|
| 667 | * interrupt line |
---|
| 668 | */ |
---|
| 669 | if (1) |
---|
| 670 | { |
---|
| 671 | msg.ctrl_minor = ((ata_int_st_t *)the_node)->ctrl_minor; |
---|
[a3d3d9a] | 672 | ide_controller_read_register(msg.ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 673 | &byte); |
---|
[a3d3d9a] | 674 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, msg.ctrl_minor, 0); |
---|
[109fc26] | 675 | } |
---|
| 676 | the_node = the_node->next; |
---|
[a3d3d9a] | 677 | } |
---|
[109fc26] | 678 | } |
---|
[d5ed9e1] | 679 | #else |
---|
| 680 | void ata_interrupt_handler(rtems_irq_hdl_param handle) |
---|
| 681 | { |
---|
| 682 | int ata_irq_chain_index = (int) handle; |
---|
[b9c38ed] | 683 | rtems_chain_node *the_node = |
---|
[d5ed9e1] | 684 | ata_irq_chain[ata_irq_chain_index].irq_chain.last; |
---|
| 685 | ata_queue_msg_t msg; |
---|
| 686 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
| 687 | |
---|
| 688 | |
---|
[b9c38ed] | 689 | for ( ; !rtems_chain_is_tail(&ata_irq_chain[ata_irq_chain_index].irq_chain, |
---|
[d5ed9e1] | 690 | the_node) ; ) |
---|
| 691 | { |
---|
| 692 | /* if (1) - is temporary hack - currently I don't know how to identify |
---|
| 693 | * controller which asserted interrupt if few controllers share one |
---|
| 694 | * interrupt line |
---|
| 695 | */ |
---|
| 696 | if (1) |
---|
| 697 | { |
---|
| 698 | msg.ctrl_minor = ((ata_int_st_t *)the_node)->ctrl_minor; |
---|
| 699 | ide_controller_read_register(msg.ctrl_minor, IDE_REGISTER_STATUS, |
---|
| 700 | &byte); |
---|
| 701 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, msg.ctrl_minor, 0); |
---|
| 702 | } |
---|
| 703 | the_node = the_node->next; |
---|
| 704 | } |
---|
| 705 | } |
---|
| 706 | |
---|
| 707 | void ata_interrupt_on(const rtems_irq_connect_data *ptr) |
---|
| 708 | { |
---|
| 709 | |
---|
| 710 | /* enable ATA device interrupt */ |
---|
| 711 | ide_controller_write_register(0, |
---|
| 712 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 713 | 0x00 |
---|
| 714 | ); |
---|
| 715 | } |
---|
| 716 | |
---|
| 717 | |
---|
| 718 | void ata_interrupt_off(const rtems_irq_connect_data *ptr) |
---|
| 719 | { |
---|
| 720 | |
---|
| 721 | /* disable ATA device interrupt */ |
---|
| 722 | ide_controller_write_register(0, |
---|
| 723 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 724 | IDE_REGISTER_DEVICE_CONTROL_nIEN |
---|
| 725 | ); |
---|
| 726 | } |
---|
| 727 | |
---|
| 728 | |
---|
| 729 | int ata_interrupt_isOn(const rtems_irq_connect_data *ptr) |
---|
| 730 | { |
---|
| 731 | uint16_t byte; /* emphasize that only 8 low bits is meaningful */ |
---|
| 732 | |
---|
| 733 | /* return int. status od ATA device */ |
---|
| 734 | ide_controller_read_register(0, |
---|
| 735 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
| 736 | &byte |
---|
| 737 | ); |
---|
| 738 | |
---|
| 739 | return !(byte & IDE_REGISTER_DEVICE_CONTROL_nIEN); |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | |
---|
| 743 | static rtems_irq_connect_data ata_irq_data = |
---|
| 744 | { |
---|
| 745 | |
---|
| 746 | 0, /* filled out before use... */ |
---|
[397060c] | 747 | ata_interrupt_handler,/* filled out before use... */ |
---|
| 748 | NULL, |
---|
| 749 | ata_interrupt_on, |
---|
| 750 | ata_interrupt_off, |
---|
| 751 | ata_interrupt_isOn |
---|
[d5ed9e1] | 752 | }; |
---|
| 753 | #endif |
---|
[109fc26] | 754 | |
---|
[a3d3d9a] | 755 | /* ata_pio_in_protocol -- |
---|
[109fc26] | 756 | * ATA PIO_IN protocol implementation, see specification |
---|
[a3d3d9a] | 757 | * |
---|
[109fc26] | 758 | * PARAMETERS: |
---|
| 759 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 760 | * areq - ATA request |
---|
[109fc26] | 761 | * |
---|
| 762 | * RETURNS: |
---|
| 763 | * NONE |
---|
| 764 | */ |
---|
| 765 | static inline void |
---|
| 766 | ata_pio_in_protocol(rtems_device_minor_number ctrl_minor, ata_req_t *areq) |
---|
| 767 | { |
---|
[7357f566] | 768 | uint16_t val; |
---|
[ee4f57d] | 769 | uint8_t dev; |
---|
[109fc26] | 770 | ata_queue_msg_t msg; |
---|
[a3d3d9a] | 771 | |
---|
| 772 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 773 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 774 | |
---|
[7357f566] | 775 | if (areq->cnt) |
---|
| 776 | { |
---|
| 777 | int ccbuf = areq->cbuf; |
---|
| 778 | ide_controller_read_data_block(ctrl_minor, |
---|
| 779 | areq->breq->bufs[0].length * areq->cnt, |
---|
| 780 | areq->breq->bufs, &areq->cbuf, &areq->pos); |
---|
| 781 | ccbuf = areq->cbuf - ccbuf; |
---|
| 782 | areq->cnt -= ccbuf; |
---|
| 783 | } |
---|
[3495c57] | 784 | |
---|
[109fc26] | 785 | if (areq->cnt == 0) |
---|
| 786 | { |
---|
[5c587596] | 787 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL); |
---|
[109fc26] | 788 | } |
---|
[6640459d] | 789 | else if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 790 | { |
---|
| 791 | do { |
---|
| 792 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &val); |
---|
| 793 | } while (val & IDE_REGISTER_STATUS_BSY); |
---|
[a3d3d9a] | 794 | |
---|
[109fc26] | 795 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
| 796 | } |
---|
| 797 | } |
---|
| 798 | |
---|
[a3d3d9a] | 799 | /* ata_pio_out_protocol -- |
---|
[109fc26] | 800 | * ATA PIO_OUT protocol implementation, see specification |
---|
[a3d3d9a] | 801 | * |
---|
[109fc26] | 802 | * PARAMETERS: |
---|
| 803 | * ctrl_minor - controller identifier |
---|
[a3d3d9a] | 804 | * areq - ATA request |
---|
[109fc26] | 805 | * |
---|
| 806 | * RETURNS: |
---|
| 807 | * NONE |
---|
| 808 | */ |
---|
| 809 | static inline void |
---|
| 810 | ata_pio_out_protocol(rtems_device_minor_number ctrl_minor, ata_req_t *areq) |
---|
| 811 | { |
---|
[7357f566] | 812 | uint16_t val; |
---|
[ee4f57d] | 813 | uint8_t dev; |
---|
[109fc26] | 814 | ata_queue_msg_t msg; |
---|
[a3d3d9a] | 815 | |
---|
[7357f566] | 816 | #if ATA_DEBUG |
---|
| 817 | ata_printf("ata_pio_out_protocol:\n"); |
---|
[3735f08] | 818 | #endif |
---|
[3495c57] | 819 | |
---|
[a3d3d9a] | 820 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 821 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 822 | |
---|
| 823 | if (areq->cnt == 0) |
---|
| 824 | { |
---|
[5c587596] | 825 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL); |
---|
[109fc26] | 826 | } |
---|
[a3d3d9a] | 827 | else |
---|
[109fc26] | 828 | { |
---|
[7357f566] | 829 | if (areq->cnt) |
---|
| 830 | { |
---|
| 831 | int ccbuf = areq->cbuf; |
---|
| 832 | ide_controller_write_data_block(ctrl_minor, |
---|
| 833 | areq->breq->bufs[0].length * areq->cnt, |
---|
| 834 | areq->breq->bufs, &areq->cbuf, |
---|
| 835 | &areq->pos); |
---|
| 836 | ccbuf = areq->cbuf - ccbuf; |
---|
| 837 | areq->cnt -= ccbuf; |
---|
| 838 | } |
---|
[6640459d] | 839 | if (IDE_Controller_Table[ctrl_minor].int_driven == false) |
---|
[109fc26] | 840 | { |
---|
| 841 | do { |
---|
[a3d3d9a] | 842 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 843 | &val); |
---|
| 844 | } while (val & IDE_REGISTER_STATUS_BSY); |
---|
| 845 | |
---|
| 846 | ATA_SEND_EVT(msg, ATA_MSG_GEN_EVT, ctrl_minor, 0); |
---|
| 847 | } |
---|
| 848 | } |
---|
| 849 | } |
---|
| 850 | |
---|
[a3d3d9a] | 851 | /* ata_queue_task -- |
---|
[109fc26] | 852 | * Task which manages ATA driver events queue. |
---|
[a3d3d9a] | 853 | * |
---|
[109fc26] | 854 | * PARAMETERS: |
---|
| 855 | * arg - ignored |
---|
| 856 | * |
---|
| 857 | * RETURNS: |
---|
| 858 | * NONE |
---|
| 859 | * |
---|
| 860 | * NOTES: |
---|
[a3d3d9a] | 861 | * should be non-preemptive |
---|
[109fc26] | 862 | */ |
---|
| 863 | static rtems_task |
---|
| 864 | ata_queue_task(rtems_task_argument arg) |
---|
| 865 | { |
---|
| 866 | ata_queue_msg_t msg; |
---|
[41a1c334] | 867 | size_t size; |
---|
[109fc26] | 868 | ata_req_t *areq; |
---|
| 869 | rtems_device_minor_number ctrl_minor; |
---|
[ee4f57d] | 870 | uint16_t val; |
---|
| 871 | uint16_t val1; |
---|
[109fc26] | 872 | rtems_status_code rc; |
---|
| 873 | ISR_Level level; |
---|
[3495c57] | 874 | |
---|
[3735f08] | 875 | PREEMPTION_KEY(key); |
---|
[109fc26] | 876 | |
---|
[3735f08] | 877 | DISABLE_PREEMPTION(key); |
---|
[3495c57] | 878 | |
---|
[109fc26] | 879 | while (1) |
---|
| 880 | { |
---|
[3735f08] | 881 | ENABLE_PREEMPTION(key); |
---|
[3495c57] | 882 | |
---|
[109fc26] | 883 | /* get event which has happend */ |
---|
[a3d3d9a] | 884 | rc = rtems_message_queue_receive(ata_queue_id, &msg, &size, RTEMS_WAIT, |
---|
[109fc26] | 885 | RTEMS_NO_TIMEOUT); |
---|
| 886 | if (rc != RTEMS_SUCCESSFUL) |
---|
| 887 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
[a3d3d9a] | 888 | |
---|
[109fc26] | 889 | /* get controller on which event has happend */ |
---|
| 890 | ctrl_minor = msg.ctrl_minor; |
---|
[a3d3d9a] | 891 | |
---|
[3735f08] | 892 | DISABLE_PREEMPTION(key); |
---|
[3495c57] | 893 | |
---|
[109fc26] | 894 | /* get current request to the controller */ |
---|
[a3d3d9a] | 895 | _ISR_Disable(level); |
---|
[109fc26] | 896 | areq = (ata_req_t *)(ata_ide_ctrls[ctrl_minor].reqs.first); |
---|
| 897 | _ISR_Enable(level); |
---|
[3495c57] | 898 | |
---|
[109fc26] | 899 | switch(msg.type) |
---|
| 900 | { |
---|
| 901 | case ATA_MSG_PROCESS_NEXT_EVT: |
---|
| 902 | /* process next request in the controller queue */ |
---|
| 903 | ata_process_request(ctrl_minor); |
---|
| 904 | break; |
---|
| 905 | |
---|
| 906 | case ATA_MSG_SUCCESS_EVT: |
---|
[a3d3d9a] | 907 | /* |
---|
| 908 | * finish processing of current request with successful |
---|
| 909 | * status and start processing of the next request in the |
---|
[109fc26] | 910 | * controller queue |
---|
| 911 | */ |
---|
[5c587596] | 912 | ata_request_done(areq, ctrl_minor, RTEMS_SUCCESSFUL); |
---|
[109fc26] | 913 | break; |
---|
[a3d3d9a] | 914 | |
---|
[109fc26] | 915 | case ATA_MSG_ERROR_EVT: |
---|
[a3d3d9a] | 916 | /* |
---|
| 917 | * finish processing of current request with error |
---|
| 918 | * status and start processing of the next request in the |
---|
[109fc26] | 919 | * controller queue |
---|
| 920 | */ |
---|
[5c587596] | 921 | ata_request_done(areq, ctrl_minor, RTEMS_IO_ERROR); |
---|
[109fc26] | 922 | break; |
---|
[a3d3d9a] | 923 | |
---|
[109fc26] | 924 | case ATA_MSG_GEN_EVT: |
---|
[a3d3d9a] | 925 | /* |
---|
| 926 | * continue processing of the current request to the |
---|
| 927 | * controller according to current request state and |
---|
[109fc26] | 928 | * ATA protocol |
---|
| 929 | */ |
---|
[a3d3d9a] | 930 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, |
---|
[109fc26] | 931 | &val); |
---|
| 932 | /* process error case */ |
---|
| 933 | if (val & IDE_REGISTER_STATUS_ERR) |
---|
[a3d3d9a] | 934 | { |
---|
| 935 | ide_controller_read_register(ctrl_minor, |
---|
| 936 | IDE_REGISTER_ERROR, |
---|
[109fc26] | 937 | &val); |
---|
[7357f566] | 938 | if (val & (IDE_REGISTER_ERROR_UNC | |
---|
| 939 | IDE_REGISTER_ERROR_ICRC | |
---|
| 940 | IDE_REGISTER_ERROR_IDNF | |
---|
| 941 | IDE_REGISTER_ERROR_NM | |
---|
| 942 | IDE_REGISTER_ERROR_MED)) |
---|
| 943 | { |
---|
| 944 | if (areq->type == ATA_COMMAND_TYPE_NON_DATA) |
---|
| 945 | ata_non_data_request_done(areq, ctrl_minor, |
---|
| 946 | RTEMS_UNSATISFIED, |
---|
| 947 | RTEMS_IO_ERROR); |
---|
| 948 | else |
---|
[5c587596] | 949 | ata_request_done(areq, ctrl_minor, RTEMS_IO_ERROR); |
---|
[7357f566] | 950 | break; |
---|
| 951 | } |
---|
[109fc26] | 952 | } |
---|
| 953 | |
---|
| 954 | switch(areq->type) |
---|
| 955 | { |
---|
| 956 | case ATA_COMMAND_TYPE_PIO_IN: |
---|
| 957 | ata_pio_in_protocol(ctrl_minor, areq); |
---|
| 958 | break; |
---|
[a3d3d9a] | 959 | |
---|
[109fc26] | 960 | case ATA_COMMAND_TYPE_PIO_OUT: |
---|
| 961 | ata_pio_out_protocol(ctrl_minor, areq); |
---|
| 962 | break; |
---|
[a3d3d9a] | 963 | |
---|
[109fc26] | 964 | case ATA_COMMAND_TYPE_NON_DATA: |
---|
[a3d3d9a] | 965 | ide_controller_read_register(ctrl_minor, |
---|
| 966 | IDE_REGISTER_ERROR, |
---|
[109fc26] | 967 | &val1); |
---|
| 968 | ata_non_data_request_done(areq, ctrl_minor, |
---|
| 969 | RTEMS_SUCCESSFUL, |
---|
| 970 | val1); |
---|
| 971 | break; |
---|
[a3d3d9a] | 972 | |
---|
[109fc26] | 973 | default: |
---|
[7357f566] | 974 | #if ATA_DEBUG |
---|
| 975 | ata_printf("ata_queue_task: non-supported command type\n"); |
---|
[d5ed9e1] | 976 | #endif |
---|
[5c587596] | 977 | ata_request_done(areq, ctrl_minor, RTEMS_IO_ERROR); |
---|
[a3d3d9a] | 978 | break; |
---|
[109fc26] | 979 | } |
---|
[a3d3d9a] | 980 | break; |
---|
[109fc26] | 981 | |
---|
| 982 | default: |
---|
[7357f566] | 983 | #if ATA_DEBUG |
---|
| 984 | ata_printf("ata_queue_task: internal error\n"); |
---|
[3735f08] | 985 | rtems_task_delete (RTEMS_SELF); |
---|
| 986 | #endif |
---|
[109fc26] | 987 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
| 988 | break; |
---|
| 989 | } |
---|
| 990 | } |
---|
| 991 | } |
---|
| 992 | |
---|
[a3d3d9a] | 993 | /* ata_ioctl -- |
---|
[109fc26] | 994 | * ATA driver ioctl interface. |
---|
[a3d3d9a] | 995 | * |
---|
[109fc26] | 996 | * PARAMETERS: |
---|
| 997 | * device - device identifier |
---|
| 998 | * cmd - command |
---|
| 999 | * argp - arguments |
---|
| 1000 | * |
---|
| 1001 | * RETURNS: |
---|
| 1002 | * depend on 'cmd' |
---|
| 1003 | */ |
---|
[94d7bd7] | 1004 | static int |
---|
| 1005 | ata_ioctl(rtems_disk_device *dd, uint32_t cmd, void *argp) |
---|
[109fc26] | 1006 | { |
---|
[1e0a5512] | 1007 | dev_t device = rtems_disk_get_device_identifier(dd); |
---|
[109fc26] | 1008 | rtems_status_code status; |
---|
| 1009 | rtems_device_minor_number rel_minor; |
---|
[3495c57] | 1010 | |
---|
[109fc26] | 1011 | rel_minor = (rtems_filesystem_dev_minor_t(device)) / |
---|
| 1012 | ATA_MINOR_NUM_RESERVED_PER_ATA_DEVICE; |
---|
| 1013 | |
---|
[a3d3d9a] | 1014 | /* |
---|
[109fc26] | 1015 | * in most cases this means that device 'device' is not an registred ATA |
---|
| 1016 | * device |
---|
[a3d3d9a] | 1017 | */ |
---|
[109fc26] | 1018 | if (ata_devs[rel_minor].device == ATA_UNDEFINED_VALUE) |
---|
| 1019 | { |
---|
| 1020 | errno = ENODEV; |
---|
| 1021 | return -1; |
---|
[a3d3d9a] | 1022 | } |
---|
[109fc26] | 1023 | |
---|
[a3d3d9a] | 1024 | switch (cmd) |
---|
[109fc26] | 1025 | { |
---|
[3735f08] | 1026 | case RTEMS_BLKIO_REQUEST: |
---|
| 1027 | status = ata_io_data_request(device, (rtems_blkdev_request *)argp); |
---|
[109fc26] | 1028 | break; |
---|
[a3d3d9a] | 1029 | |
---|
[109fc26] | 1030 | case ATAIO_SET_MULTIPLE_MODE: |
---|
| 1031 | status = ata_non_data_request(device, cmd, argp); |
---|
| 1032 | break; |
---|
[a3d3d9a] | 1033 | |
---|
[3735f08] | 1034 | case RTEMS_BLKDEV_CAPABILITIES: |
---|
| 1035 | *((uint32_t*) argp) = RTEMS_BLKDEV_CAP_MULTISECTOR_CONT; |
---|
| 1036 | status = RTEMS_SUCCESSFUL; |
---|
| 1037 | break; |
---|
[3495c57] | 1038 | |
---|
[109fc26] | 1039 | default: |
---|
[94d7bd7] | 1040 | return rtems_blkdev_ioctl (dd, cmd, argp); |
---|
[109fc26] | 1041 | break; |
---|
| 1042 | } |
---|
| 1043 | |
---|
| 1044 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1045 | { |
---|
| 1046 | errno = EIO; |
---|
[a3d3d9a] | 1047 | return -1; |
---|
[109fc26] | 1048 | } |
---|
| 1049 | return 0; |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | /* |
---|
| 1053 | * ata_initialize -- |
---|
| 1054 | * Initializes all ATA devices found on initialized IDE controllers. |
---|
[a3d3d9a] | 1055 | * |
---|
[109fc26] | 1056 | * PARAMETERS: |
---|
| 1057 | * major - device major number |
---|
| 1058 | * minor - device minor number |
---|
| 1059 | * args - arguments |
---|
| 1060 | * |
---|
| 1061 | * RETURNS: |
---|
| 1062 | * RTEMS_SUCCESSFUL on success, or error code if |
---|
[a3d3d9a] | 1063 | * error occured |
---|
[109fc26] | 1064 | */ |
---|
[a3d3d9a] | 1065 | rtems_device_driver |
---|
[3735f08] | 1066 | rtems_ata_initialize(rtems_device_major_number major, |
---|
| 1067 | rtems_device_minor_number minor_arg, |
---|
| 1068 | void *args) |
---|
[109fc26] | 1069 | { |
---|
[ee4f57d] | 1070 | uint32_t ctrl_minor; |
---|
[109fc26] | 1071 | rtems_status_code status; |
---|
| 1072 | ata_req_t areq; |
---|
[a3d3d9a] | 1073 | blkdev_request1 breq; |
---|
[ee4f57d] | 1074 | uint8_t i, dev = 0; |
---|
| 1075 | uint16_t *buffer; |
---|
[0d3b27cd] | 1076 | #if ATA_EXEC_DEVICE_DIAGNOSTIC |
---|
[ee4f57d] | 1077 | uint16_t ec; |
---|
[0d3b27cd] | 1078 | #endif |
---|
[109fc26] | 1079 | char name[ATA_MAX_NAME_LENGTH]; |
---|
| 1080 | dev_t device; |
---|
| 1081 | ata_int_st_t *int_st; |
---|
[c9b005a9] | 1082 | |
---|
[37f9717a] | 1083 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1084 | rtems_isr_entry old_isr; |
---|
[d5ed9e1] | 1085 | #else |
---|
| 1086 | int ata_irq_chain_use; |
---|
| 1087 | #endif |
---|
[109fc26] | 1088 | |
---|
| 1089 | if (ata_initialized) |
---|
| 1090 | return RTEMS_SUCCESSFUL; |
---|
[a3d3d9a] | 1091 | |
---|
[109fc26] | 1092 | /* initialization of disk devices library */ |
---|
| 1093 | status = rtems_disk_io_initialize(); |
---|
| 1094 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1095 | return status; |
---|
[a3d3d9a] | 1096 | |
---|
[3735f08] | 1097 | #ifdef SAFE |
---|
| 1098 | #ifdef SAFE_MUTEX |
---|
| 1099 | status = rtems_semaphore_create (rtems_build_name ('A', 'T', 'A', 'L'), |
---|
| 1100 | 1, RTEMS_ATA_LOCK_ATTRIBS, 0, |
---|
| 1101 | &ata_lock); |
---|
| 1102 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1103 | return status; |
---|
| 1104 | #endif |
---|
| 1105 | #endif |
---|
[3495c57] | 1106 | |
---|
[109fc26] | 1107 | /* create queue for asynchronous requests handling */ |
---|
| 1108 | status = rtems_message_queue_create( |
---|
| 1109 | rtems_build_name('A', 'T', 'A', 'Q'), |
---|
| 1110 | ATA_DRIVER_MESSAGE_QUEUE_SIZE, |
---|
| 1111 | sizeof(ata_queue_msg_t), |
---|
| 1112 | RTEMS_FIFO | RTEMS_LOCAL, |
---|
| 1113 | &ata_queue_id); |
---|
| 1114 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1115 | { |
---|
| 1116 | rtems_disk_io_done(); |
---|
| 1117 | return status; |
---|
[a3d3d9a] | 1118 | } |
---|
[109fc26] | 1119 | |
---|
[a3d3d9a] | 1120 | /* |
---|
| 1121 | * create ATA driver task, see comments for task implementation for |
---|
| 1122 | * details |
---|
[109fc26] | 1123 | */ |
---|
| 1124 | status = rtems_task_create( |
---|
| 1125 | rtems_build_name ('A', 'T', 'A', 'T'), |
---|
[3495c57] | 1126 | ((rtems_ata_driver_task_priority > 0) |
---|
[3735f08] | 1127 | ? rtems_ata_driver_task_priority |
---|
[c9b005a9] | 1128 | : ATA_DRIVER_TASK_DEFAULT_PRIORITY), |
---|
[109fc26] | 1129 | ATA_DRIVER_TASK_STACK_SIZE, |
---|
[3735f08] | 1130 | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_NO_ASR | |
---|
[109fc26] | 1131 | RTEMS_INTERRUPT_LEVEL(0), |
---|
| 1132 | RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL, |
---|
| 1133 | &ata_task_id); |
---|
| 1134 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1135 | { |
---|
| 1136 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1137 | rtems_disk_io_done(); |
---|
| 1138 | return status; |
---|
[a3d3d9a] | 1139 | } |
---|
| 1140 | |
---|
| 1141 | /* |
---|
| 1142 | * start ATA driver task. Actually the task will not start immediately - |
---|
[109fc26] | 1143 | * it will start only after multitasking support will be started |
---|
[a3d3d9a] | 1144 | */ |
---|
| 1145 | status = rtems_task_start(ata_task_id, ata_queue_task, 0); |
---|
[109fc26] | 1146 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1147 | { |
---|
| 1148 | rtems_task_delete(ata_task_id); |
---|
| 1149 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1150 | rtems_disk_io_done(); |
---|
| 1151 | return status; |
---|
[a3d3d9a] | 1152 | } |
---|
| 1153 | |
---|
[509fec9c] | 1154 | buffer = (uint16_t*)malloc(ATA_SECTOR_SIZE); |
---|
[109fc26] | 1155 | if (buffer == NULL) |
---|
| 1156 | { |
---|
| 1157 | rtems_task_delete(ata_task_id); |
---|
| 1158 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1159 | rtems_disk_io_done(); |
---|
| 1160 | return RTEMS_NO_MEMORY; |
---|
[a3d3d9a] | 1161 | } |
---|
| 1162 | |
---|
[109fc26] | 1163 | ata_devs_number = 0; |
---|
| 1164 | |
---|
| 1165 | for (i = 0; i < (2 * IDE_CTRL_MAX_MINOR_NUMBER); i++) |
---|
| 1166 | ata_devs[i].device = ATA_UNDEFINED_VALUE; |
---|
| 1167 | |
---|
[37f9717a] | 1168 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1169 | /* prepare ATA driver for handling interrupt driven devices */ |
---|
| 1170 | for (i = 0; i < ATA_MAX_RTEMS_INT_VEC_NUMBER; i++) |
---|
[b9c38ed] | 1171 | rtems_chain_initialize_empty(&ata_int_vec[i]); |
---|
[d5ed9e1] | 1172 | #else |
---|
| 1173 | for (i = 0; i < ATA_IRQ_CHAIN_MAX_CNT; i++) { |
---|
[b9c38ed] | 1174 | rtems_chain_initialize_empty(&(ata_irq_chain[i].irq_chain)); |
---|
[d5ed9e1] | 1175 | } |
---|
| 1176 | #endif |
---|
[109fc26] | 1177 | |
---|
[a3d3d9a] | 1178 | /* |
---|
| 1179 | * during ATA driver initialization EXECUTE DEVICE DIAGNOSTIC and |
---|
| 1180 | * IDENTIFY DEVICE ATA command should be issued; for these purposes ATA |
---|
| 1181 | * requests should be formed; ATA requests contain block device request, |
---|
[109fc26] | 1182 | * so form block device request first |
---|
| 1183 | */ |
---|
| 1184 | memset(&breq, 0, sizeof(blkdev_request1)); |
---|
| 1185 | breq.req.req_done = NULL; |
---|
| 1186 | breq.req.done_arg = &breq; |
---|
| 1187 | breq.req.bufnum = 1; |
---|
| 1188 | breq.req.bufs[0].length = ATA_SECTOR_SIZE; |
---|
| 1189 | breq.req.bufs[0].buffer = buffer; |
---|
| 1190 | |
---|
[a3d3d9a] | 1191 | /* |
---|
[109fc26] | 1192 | * for each presented IDE controller execute EXECUTE DEVICE DIAGNOSTIC |
---|
[a3d3d9a] | 1193 | * ATA command; for each found device execute IDENTIFY DEVICE ATA |
---|
| 1194 | * command |
---|
[109fc26] | 1195 | */ |
---|
| 1196 | for (ctrl_minor = 0; ctrl_minor < IDE_Controller_Count; ctrl_minor++) |
---|
| 1197 | if (IDE_Controller_Table[ctrl_minor].status == IDE_CTRL_INITIALIZED) |
---|
| 1198 | { |
---|
[b9c38ed] | 1199 | rtems_chain_initialize_empty(&ata_ide_ctrls[ctrl_minor].reqs); |
---|
[a3d3d9a] | 1200 | |
---|
[6640459d] | 1201 | if (IDE_Controller_Table[ctrl_minor].int_driven == true) |
---|
[109fc26] | 1202 | { |
---|
| 1203 | int_st = malloc(sizeof(ata_int_st_t)); |
---|
| 1204 | if (int_st == NULL) |
---|
| 1205 | { |
---|
| 1206 | free(buffer); |
---|
| 1207 | rtems_task_delete(ata_task_id); |
---|
| 1208 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1209 | rtems_disk_io_done(); |
---|
| 1210 | return RTEMS_NO_MEMORY; |
---|
[a3d3d9a] | 1211 | } |
---|
[109fc26] | 1212 | |
---|
| 1213 | int_st->ctrl_minor = ctrl_minor; |
---|
[37f9717a] | 1214 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[109fc26] | 1215 | status = rtems_interrupt_catch( |
---|
[a3d3d9a] | 1216 | ata_interrupt_handler, |
---|
| 1217 | IDE_Controller_Table[ctrl_minor].int_vec, |
---|
[109fc26] | 1218 | &old_isr); |
---|
[d5ed9e1] | 1219 | #else |
---|
| 1220 | /* |
---|
| 1221 | * FIXME: check existing entries. if they use the same |
---|
| 1222 | * IRQ name, then append int_st to respective chain |
---|
| 1223 | * otherwise, use new ata_irq_chain entry |
---|
| 1224 | */ |
---|
| 1225 | ata_irq_chain_use = -1; |
---|
| 1226 | for (i = 0; |
---|
| 1227 | ((i < ata_irq_chain_cnt) && |
---|
| 1228 | (ata_irq_chain_use < 0));i++) { |
---|
| 1229 | if (ata_irq_chain[i].name == |
---|
| 1230 | IDE_Controller_Table[ctrl_minor].int_vec) { |
---|
| 1231 | ata_irq_chain_use = i; |
---|
| 1232 | } |
---|
| 1233 | } |
---|
| 1234 | if (ata_irq_chain_use < 0) { |
---|
| 1235 | /* |
---|
| 1236 | * no match found, try to use new channel entry |
---|
| 1237 | */ |
---|
| 1238 | if (ata_irq_chain_cnt < ATA_IRQ_CHAIN_MAX_CNT) { |
---|
| 1239 | ata_irq_chain_use = ata_irq_chain_cnt++; |
---|
| 1240 | |
---|
| 1241 | ata_irq_chain[ata_irq_chain_use].name = |
---|
| 1242 | IDE_Controller_Table[ctrl_minor].int_vec; |
---|
| 1243 | ata_irq_data.name = |
---|
| 1244 | IDE_Controller_Table[ctrl_minor].int_vec; |
---|
| 1245 | ata_irq_data.hdl = ata_interrupt_handler; |
---|
[f610e83f] | 1246 | ata_irq_data.handle = (rtems_irq_hdl_param) ctrl_minor; |
---|
[d5ed9e1] | 1247 | |
---|
| 1248 | status = ((0 == BSP_install_rtems_irq_handler(&ata_irq_data)) |
---|
| 1249 | ? RTEMS_INVALID_NUMBER |
---|
| 1250 | : RTEMS_SUCCESSFUL); |
---|
| 1251 | } |
---|
| 1252 | else { |
---|
| 1253 | status = RTEMS_TOO_MANY; |
---|
| 1254 | } |
---|
| 1255 | } |
---|
| 1256 | #endif |
---|
[109fc26] | 1257 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1258 | { |
---|
| 1259 | free(int_st); |
---|
| 1260 | free(buffer); |
---|
| 1261 | rtems_task_delete(ata_task_id); |
---|
| 1262 | rtems_message_queue_delete(ata_queue_id); |
---|
| 1263 | rtems_disk_io_done(); |
---|
| 1264 | return status; |
---|
[a3d3d9a] | 1265 | } |
---|
[37f9717a] | 1266 | #if defined(ATA_USE_OLD_EXCEPTIONS) |
---|
[b9c38ed] | 1267 | rtems_chain_append( |
---|
[109fc26] | 1268 | &ata_int_vec[IDE_Controller_Table[ctrl_minor].int_vec], |
---|
| 1269 | &int_st->link); |
---|
[d5ed9e1] | 1270 | #else |
---|
[b9c38ed] | 1271 | rtems_chain_append( |
---|
[d5ed9e1] | 1272 | &(ata_irq_chain[ata_irq_chain_use].irq_chain), |
---|
| 1273 | &int_st->link); |
---|
| 1274 | #endif |
---|
[109fc26] | 1275 | |
---|
| 1276 | /* disable interrupts */ |
---|
[a3d3d9a] | 1277 | ide_controller_write_register(ctrl_minor, |
---|
| 1278 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
[109fc26] | 1279 | IDE_REGISTER_DEVICE_CONTROL_nIEN); |
---|
| 1280 | } |
---|
[b30c618] | 1281 | |
---|
| 1282 | #if ATA_EXEC_DEVICE_DIAGNOSTIC |
---|
[109fc26] | 1283 | /* |
---|
| 1284 | * Issue EXECUTE DEVICE DIAGNOSTIC ATA command for explore is |
---|
| 1285 | * there any ATA device on the controller. |
---|
[b30c618] | 1286 | * |
---|
| 1287 | * This command may fail and it assumes we have a master device and may |
---|
| 1288 | * be a slave device. I think the identify command will handle |
---|
| 1289 | * detection better than this method. |
---|
[109fc26] | 1290 | */ |
---|
| 1291 | memset(&areq, 0, sizeof(ata_req_t)); |
---|
| 1292 | areq.type = ATA_COMMAND_TYPE_NON_DATA; |
---|
| 1293 | areq.regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
---|
[a3d3d9a] | 1294 | areq.regs.regs[IDE_REGISTER_COMMAND] = |
---|
[109fc26] | 1295 | ATA_COMMAND_EXECUTE_DEVICE_DIAGNOSTIC; |
---|
| 1296 | areq.regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_ERROR); |
---|
| 1297 | |
---|
[3735f08] | 1298 | areq.breq = (rtems_blkdev_request *)&breq; |
---|
[109fc26] | 1299 | |
---|
[a3d3d9a] | 1300 | /* |
---|
| 1301 | * Process the request. Special processing of requests on |
---|
| 1302 | * initialization phase is needed because at this moment there |
---|
[109fc26] | 1303 | * is no multitasking enviroment |
---|
| 1304 | */ |
---|
| 1305 | ata_process_request_on_init_phase(ctrl_minor, &areq); |
---|
| 1306 | |
---|
| 1307 | /* |
---|
| 1308 | * check status of I/O operation |
---|
| 1309 | */ |
---|
[b30c618] | 1310 | if (breq.req.status == RTEMS_SUCCESSFUL) |
---|
[109fc26] | 1311 | { |
---|
[b30c618] | 1312 | /* disassemble returned diagnostic codes */ |
---|
[5c587596] | 1313 | if (areq.info == ATA_DEV0_PASSED_DEV1_PASSED_OR_NOT_PRSNT) |
---|
[b30c618] | 1314 | { |
---|
| 1315 | printk("ATA: ctrl:%d: primary, secondary\n", ctrl_minor); |
---|
| 1316 | ATA_DEV_INFO(ctrl_minor,0).present = true; |
---|
[6640459d] | 1317 | ATA_DEV_INFO(ctrl_minor,1).present = true; |
---|
[b30c618] | 1318 | } |
---|
[5c587596] | 1319 | else if (areq.info == ATA_DEV0_PASSED_DEV1_FAILED) |
---|
[b30c618] | 1320 | { |
---|
| 1321 | printk("ATA: ctrl:%d: primary\n", ctrl_minor); |
---|
[6640459d] | 1322 | ATA_DEV_INFO(ctrl_minor,0).present = true; |
---|
| 1323 | ATA_DEV_INFO(ctrl_minor,1).present = false; |
---|
[b30c618] | 1324 | } |
---|
[5c587596] | 1325 | else if (areq.info < ATA_DEV1_PASSED_DEV0_FAILED) |
---|
[b30c618] | 1326 | { |
---|
| 1327 | printk("ATA: ctrl:%d: secondary\n", ctrl_minor); |
---|
[6640459d] | 1328 | ATA_DEV_INFO(ctrl_minor,0).present = false; |
---|
| 1329 | ATA_DEV_INFO(ctrl_minor,1).present = true; |
---|
[b30c618] | 1330 | } |
---|
| 1331 | else |
---|
| 1332 | { |
---|
| 1333 | printk("ATA: ctrl:%d: none\n", ctrl_minor); |
---|
[6640459d] | 1334 | ATA_DEV_INFO(ctrl_minor, 0).present = false; |
---|
| 1335 | ATA_DEV_INFO(ctrl_minor, 1).present = false; |
---|
[b30c618] | 1336 | } |
---|
[109fc26] | 1337 | |
---|
[b30c618] | 1338 | /* refine the returned codes */ |
---|
| 1339 | if (ATA_DEV_INFO(ctrl_minor, 1).present) |
---|
| 1340 | { |
---|
[109fc26] | 1341 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_ERROR, &ec); |
---|
| 1342 | if (ec & ATA_DEV1_PASSED_DEV0_FAILED) |
---|
[b30c618] | 1343 | { |
---|
| 1344 | printk("ATA: ctrl:%d: secondary inforced\n", ctrl_minor); |
---|
| 1345 | ATA_DEV_INFO(ctrl_minor, 1).present = true; |
---|
| 1346 | } |
---|
[109fc26] | 1347 | else |
---|
[b30c618] | 1348 | { |
---|
| 1349 | printk("ATA: ctrl:%d: secondary removed\n", ctrl_minor); |
---|
| 1350 | ATA_DEV_INFO(ctrl_minor, 1).present = false; |
---|
| 1351 | } |
---|
| 1352 | } |
---|
[109fc26] | 1353 | } |
---|
[b30c618] | 1354 | else |
---|
| 1355 | #endif |
---|
| 1356 | { |
---|
| 1357 | ATA_DEV_INFO(ctrl_minor, 0).present = true; |
---|
| 1358 | ATA_DEV_INFO(ctrl_minor,1).present = true; |
---|
| 1359 | } |
---|
[3495c57] | 1360 | |
---|
[109fc26] | 1361 | /* for each found ATA device obtain it configuration */ |
---|
| 1362 | for (dev = 0; dev < 2; dev++) |
---|
| 1363 | if (ATA_DEV_INFO(ctrl_minor, dev).present) |
---|
| 1364 | { |
---|
| 1365 | /* |
---|
[a3d3d9a] | 1366 | * Issue DEVICE IDENTIFY ATA command and get device |
---|
| 1367 | * configuration |
---|
[109fc26] | 1368 | */ |
---|
| 1369 | memset(&areq, 0, sizeof(ata_req_t)); |
---|
| 1370 | areq.type = ATA_COMMAND_TYPE_PIO_IN; |
---|
| 1371 | areq.regs.to_write = ATA_REGISTERS_VALUE(IDE_REGISTER_COMMAND); |
---|
[a3d3d9a] | 1372 | areq.regs.regs[IDE_REGISTER_COMMAND] = |
---|
[109fc26] | 1373 | ATA_COMMAND_IDENTIFY_DEVICE; |
---|
| 1374 | areq.regs.to_read = ATA_REGISTERS_VALUE(IDE_REGISTER_STATUS); |
---|
[3735f08] | 1375 | areq.breq = (rtems_blkdev_request *)&breq; |
---|
[a3d3d9a] | 1376 | |
---|
[f031251c] | 1377 | areq.cnt = breq.req.bufnum; |
---|
[109fc26] | 1378 | |
---|
| 1379 | areq.regs.regs[IDE_REGISTER_DEVICE_HEAD] |= |
---|
| 1380 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS); |
---|
| 1381 | |
---|
[a3d3d9a] | 1382 | /* |
---|
| 1383 | * Process the request. Special processing of requests on |
---|
| 1384 | * initialization phase is needed because at this moment there |
---|
[109fc26] | 1385 | * is no multitasking enviroment |
---|
| 1386 | */ |
---|
| 1387 | ata_process_request_on_init_phase(ctrl_minor, &areq); |
---|
| 1388 | |
---|
| 1389 | /* check status of I/O operation */ |
---|
| 1390 | if (breq.req.status != RTEMS_SUCCESSFUL) |
---|
| 1391 | continue; |
---|
| 1392 | |
---|
| 1393 | /* |
---|
[a3d3d9a] | 1394 | * Parse returned device configuration and fill in ATA internal |
---|
[109fc26] | 1395 | * device info structure |
---|
| 1396 | */ |
---|
[a3d3d9a] | 1397 | ATA_DEV_INFO(ctrl_minor, dev).cylinders = |
---|
[109fc26] | 1398 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_CLNDS]); |
---|
[a3d3d9a] | 1399 | ATA_DEV_INFO(ctrl_minor, dev).heads = |
---|
[109fc26] | 1400 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_HEADS]); |
---|
[a3d3d9a] | 1401 | ATA_DEV_INFO(ctrl_minor, dev).sectors = |
---|
[109fc26] | 1402 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_CURR_LOG_SECS]); |
---|
[3495c57] | 1403 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors = |
---|
[d949482] | 1404 | CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_USR_SECS1]); |
---|
| 1405 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors <<= 16; |
---|
| 1406 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors += CF_LE_W(buffer[ATA_IDENT_WORD_NUM_OF_USR_SECS0]); |
---|
[a3d3d9a] | 1407 | ATA_DEV_INFO(ctrl_minor, dev).lba_avaible = |
---|
[109fc26] | 1408 | (CF_LE_W(buffer[ATA_IDENT_WORD_CAPABILITIES]) >> 9) & 0x1; |
---|
| 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)); |
---|
[a3d3d9a] | 1450 | status = rtems_disk_create_phys(device, ATA_SECTOR_SIZE, |
---|
| 1451 | ATA_DEV_INFO(ctrl_minor, dev).lba_avaible ? |
---|
| 1452 | ATA_DEV_INFO(ctrl_minor, dev).lba_sectors : |
---|
[109fc26] | 1453 | (ATA_DEV_INFO(ctrl_minor, dev).heads * |
---|
| 1454 | ATA_DEV_INFO(ctrl_minor, dev).cylinders * |
---|
| 1455 | ATA_DEV_INFO(ctrl_minor, dev).sectors), |
---|
[94d7bd7] | 1456 | ata_ioctl, NULL, name); |
---|
[109fc26] | 1457 | if (status != RTEMS_SUCCESSFUL) |
---|
| 1458 | { |
---|
| 1459 | ata_devs[ata_devs_number].device = ATA_UNDEFINED_VALUE; |
---|
| 1460 | continue; |
---|
[a3d3d9a] | 1461 | } |
---|
[109fc26] | 1462 | ata_devs_number++; |
---|
| 1463 | } |
---|
[6640459d] | 1464 | if (IDE_Controller_Table[ctrl_minor].int_driven == true) |
---|
[a3d3d9a] | 1465 | { |
---|
| 1466 | ide_controller_write_register(ctrl_minor, |
---|
| 1467 | IDE_REGISTER_DEVICE_CONTROL_OFFSET, |
---|
[109fc26] | 1468 | 0x00); |
---|
| 1469 | } |
---|
| 1470 | } |
---|
| 1471 | |
---|
| 1472 | free(buffer); |
---|
[6640459d] | 1473 | ata_initialized = true; |
---|
[109fc26] | 1474 | return RTEMS_SUCCESSFUL; |
---|
| 1475 | } |
---|
| 1476 | |
---|
[a3d3d9a] | 1477 | /* ata_process_request_on_init_phase -- |
---|
| 1478 | * Process the ATA request during system initialization. Request |
---|
[109fc26] | 1479 | * processing is syncronous and doesn't use multiprocessing enviroment. |
---|
[a3d3d9a] | 1480 | * |
---|
[109fc26] | 1481 | * PARAMETERS: |
---|
| 1482 | * ctrl_minor - controller identifier |
---|
| 1483 | * areq - ATA request |
---|
| 1484 | * |
---|
| 1485 | * RETURNS: |
---|
[a3d3d9a] | 1486 | * NONE |
---|
[109fc26] | 1487 | */ |
---|
| 1488 | static void |
---|
| 1489 | ata_process_request_on_init_phase(rtems_device_minor_number ctrl_minor, |
---|
| 1490 | ata_req_t *areq) |
---|
| 1491 | { |
---|
[ee4f57d] | 1492 | uint16_t byte;/* emphasize that only 8 low bits is meaningful */ |
---|
| 1493 | uint8_t i, dev; |
---|
| 1494 | uint16_t val, val1; |
---|
[b30c618] | 1495 | volatile unsigned retries; |
---|
[3495c57] | 1496 | |
---|
[109fc26] | 1497 | assert(areq); |
---|
[a3d3d9a] | 1498 | |
---|
| 1499 | dev = areq->regs.regs[IDE_REGISTER_DEVICE_HEAD] & |
---|
[109fc26] | 1500 | IDE_REGISTER_DEVICE_HEAD_DEV; |
---|
| 1501 | |
---|
[a3d3d9a] | 1502 | ide_controller_write_register(ctrl_minor, IDE_REGISTER_DEVICE_HEAD, |
---|
[109fc26] | 1503 | areq->regs.regs[IDE_REGISTER_DEVICE_HEAD]); |
---|
[a3d3d9a] | 1504 | |
---|
[89d19033] | 1505 | retries = 0; |
---|
[109fc26] | 1506 | do { |
---|
| 1507 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
[89d19033] | 1508 | /* If device (on INIT, i.e. it should be idle) is neither |
---|
| 1509 | * busy nor ready something's fishy, i.e., there is probably |
---|
| 1510 | * no device present. |
---|
| 1511 | * I'd like to do a proper timeout but don't know of a portable |
---|
| 1512 | * timeout routine (w/o using multitasking / rtems_task_wake_after()) |
---|
| 1513 | */ |
---|
[b30c618] | 1514 | if ( ! (byte & (IDE_REGISTER_STATUS_BSY | IDE_REGISTER_STATUS_DRDY))) { |
---|
[89d19033] | 1515 | retries++; |
---|
[b30c618] | 1516 | if ( 10000 == retries ) { |
---|
| 1517 | /* probably no drive connected */ |
---|
| 1518 | areq->breq->status = RTEMS_UNSATISFIED; |
---|
| 1519 | return; |
---|
| 1520 | } |
---|
[89d19033] | 1521 | } |
---|
[a3d3d9a] | 1522 | } while ((byte & IDE_REGISTER_STATUS_BSY) || |
---|
[109fc26] | 1523 | (!(byte & IDE_REGISTER_STATUS_DRDY))); |
---|
| 1524 | |
---|
| 1525 | for (i=0; i< ATA_MAX_CMD_REG_OFFSET; i++) |
---|
| 1526 | { |
---|
[ee4f57d] | 1527 | uint32_t reg = (1 << i); |
---|
[109fc26] | 1528 | if (areq->regs.to_write & reg) |
---|
[a3d3d9a] | 1529 | ide_controller_write_register(ctrl_minor, i, |
---|
[109fc26] | 1530 | areq->regs.regs[i]); |
---|
| 1531 | } |
---|
| 1532 | |
---|
| 1533 | do { |
---|
| 1534 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &byte); |
---|
| 1535 | } while (byte & IDE_REGISTER_STATUS_BSY); |
---|
| 1536 | |
---|
| 1537 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_STATUS, &val); |
---|
| 1538 | ide_controller_read_register(ctrl_minor, IDE_REGISTER_ERROR, &val1); |
---|
| 1539 | |
---|
| 1540 | if (val & IDE_REGISTER_STATUS_ERR) |
---|
| 1541 | { |
---|
[5c587596] | 1542 | areq->breq->status = RTEMS_IO_ERROR; |
---|
[109fc26] | 1543 | return; |
---|
| 1544 | } |
---|
[a3d3d9a] | 1545 | |
---|
[109fc26] | 1546 | switch(areq->type) |
---|
| 1547 | { |
---|
| 1548 | case ATA_COMMAND_TYPE_PIO_IN: |
---|
[7357f566] | 1549 | if (areq->cnt) |
---|
| 1550 | { |
---|
| 1551 | int ccbuf = areq->cbuf; |
---|
| 1552 | ide_controller_read_data_block(ctrl_minor, |
---|
| 1553 | areq->breq->bufs[0].length * areq->cnt, |
---|
| 1554 | areq->breq->bufs, &areq->cbuf, |
---|
| 1555 | &areq->pos); |
---|
| 1556 | ccbuf = areq->cbuf - ccbuf; |
---|
| 1557 | areq->cnt -= ccbuf; |
---|
| 1558 | } |
---|
[109fc26] | 1559 | if (areq->cnt == 0) |
---|
| 1560 | { |
---|
| 1561 | areq->breq->status = RTEMS_SUCCESSFUL; |
---|
| 1562 | } |
---|
[a3d3d9a] | 1563 | else |
---|
[109fc26] | 1564 | { |
---|
[a3d3d9a] | 1565 | /* |
---|
| 1566 | * this shouldn't happend on the initialization |
---|
| 1567 | * phase! |
---|
[109fc26] | 1568 | */ |
---|
[a3d3d9a] | 1569 | rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); |
---|
[109fc26] | 1570 | } |
---|
| 1571 | break; |
---|
[a3d3d9a] | 1572 | |
---|
[109fc26] | 1573 | case ATA_COMMAND_TYPE_NON_DATA: |
---|
| 1574 | areq->breq->status = RTEMS_SUCCESSFUL; |
---|
[5c587596] | 1575 | areq->info = val1; |
---|
[109fc26] | 1576 | break; |
---|
[a3d3d9a] | 1577 | |
---|
[109fc26] | 1578 | default: |
---|
[7357f566] | 1579 | #if ATA_DEBUG |
---|
| 1580 | ata_printf("ata_queue_task: non-supported command type\n"); |
---|
[d5ed9e1] | 1581 | #endif |
---|
[5c587596] | 1582 | areq->breq->status = RTEMS_IO_ERROR; |
---|
[a3d3d9a] | 1583 | break; |
---|
[109fc26] | 1584 | } |
---|
| 1585 | } |
---|