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