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-rw-r--r--drivers/ide/ide-probe.c135
-rw-r--r--drivers/ide/ide.c146
-rw-r--r--include/linux/ide.h9
3 files changed, 136 insertions, 154 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index e953b70706c2..09ea50118e63 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -918,6 +918,8 @@ static int ide_init_queue(ide_drive_t *drive)
918 return 0; 918 return 0;
919} 919}
920 920
921static DEFINE_MUTEX(ide_cfg_mtx);
922
921/* 923/*
922 * For any present drive: 924 * For any present drive:
923 * - allocate the block device queue 925 * - allocate the block device queue
@@ -1273,6 +1275,69 @@ static void ide_port_cable_detect(ide_hwif_t *hwif)
1273 } 1275 }
1274} 1276}
1275 1277
1278static const u8 ide_hwif_to_major[] =
1279 { IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR, IDE4_MAJOR,
1280 IDE5_MAJOR, IDE6_MAJOR, IDE7_MAJOR, IDE8_MAJOR, IDE9_MAJOR };
1281
1282static void ide_port_init_devices_data(ide_hwif_t *hwif)
1283{
1284 int unit;
1285
1286 for (unit = 0; unit < MAX_DRIVES; ++unit) {
1287 ide_drive_t *drive = &hwif->drives[unit];
1288 u8 j = (hwif->index * MAX_DRIVES) + unit;
1289
1290 memset(drive, 0, sizeof(*drive));
1291
1292 drive->media = ide_disk;
1293 drive->select = (unit << 4) | ATA_DEVICE_OBS;
1294 drive->hwif = hwif;
1295 drive->ready_stat = ATA_DRDY;
1296 drive->bad_wstat = BAD_W_STAT;
1297 drive->special.b.recalibrate = 1;
1298 drive->special.b.set_geometry = 1;
1299 drive->name[0] = 'h';
1300 drive->name[1] = 'd';
1301 drive->name[2] = 'a' + j;
1302 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
1303
1304 INIT_LIST_HEAD(&drive->list);
1305 init_completion(&drive->gendev_rel_comp);
1306 }
1307}
1308
1309static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
1310{
1311 /* bulk initialize hwif & drive info with zeros */
1312 memset(hwif, 0, sizeof(ide_hwif_t));
1313
1314 /* fill in any non-zero initial values */
1315 hwif->index = index;
1316 hwif->major = ide_hwif_to_major[index];
1317
1318 hwif->name[0] = 'i';
1319 hwif->name[1] = 'd';
1320 hwif->name[2] = 'e';
1321 hwif->name[3] = '0' + index;
1322
1323 init_completion(&hwif->gendev_rel_comp);
1324
1325 hwif->tp_ops = &default_tp_ops;
1326
1327 ide_port_init_devices_data(hwif);
1328}
1329
1330static void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
1331{
1332 memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
1333 hwif->irq = hw->irq;
1334 hwif->chipset = hw->chipset;
1335 hwif->dev = hw->dev;
1336 hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
1337 hwif->ack_intr = hw->ack_intr;
1338 hwif->config_data = hw->config;
1339}
1340
1276static unsigned int ide_indexes; 1341static unsigned int ide_indexes;
1277 1342
1278/** 1343/**
@@ -1503,6 +1568,76 @@ int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws,
1503} 1568}
1504EXPORT_SYMBOL_GPL(ide_host_add); 1569EXPORT_SYMBOL_GPL(ide_host_add);
1505 1570
1571static void __ide_port_unregister_devices(ide_hwif_t *hwif)
1572{
1573 int i;
1574
1575 for (i = 0; i < MAX_DRIVES; i++) {
1576 ide_drive_t *drive = &hwif->drives[i];
1577
1578 if (drive->dev_flags & IDE_DFLAG_PRESENT) {
1579 device_unregister(&drive->gendev);
1580 wait_for_completion(&drive->gendev_rel_comp);
1581 }
1582 }
1583}
1584
1585void ide_port_unregister_devices(ide_hwif_t *hwif)
1586{
1587 mutex_lock(&ide_cfg_mtx);
1588 __ide_port_unregister_devices(hwif);
1589 hwif->present = 0;
1590 ide_port_init_devices_data(hwif);
1591 mutex_unlock(&ide_cfg_mtx);
1592}
1593EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
1594
1595/**
1596 * ide_unregister - free an IDE interface
1597 * @hwif: IDE interface
1598 *
1599 * Perform the final unregister of an IDE interface.
1600 *
1601 * Locking:
1602 * The caller must not hold the IDE locks.
1603 *
1604 * It is up to the caller to be sure there is no pending I/O here,
1605 * and that the interface will not be reopened (present/vanishing
1606 * locking isn't yet done BTW).
1607 */
1608
1609static void ide_unregister(ide_hwif_t *hwif)
1610{
1611 BUG_ON(in_interrupt());
1612 BUG_ON(irqs_disabled());
1613
1614 mutex_lock(&ide_cfg_mtx);
1615
1616 if (hwif->present) {
1617 __ide_port_unregister_devices(hwif);
1618 hwif->present = 0;
1619 }
1620
1621 ide_proc_unregister_port(hwif);
1622
1623 free_irq(hwif->irq, hwif);
1624
1625 device_unregister(hwif->portdev);
1626 device_unregister(&hwif->gendev);
1627 wait_for_completion(&hwif->gendev_rel_comp);
1628
1629 /*
1630 * Remove us from the kernel's knowledge
1631 */
1632 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
1633 kfree(hwif->sg_table);
1634 unregister_blkdev(hwif->major, hwif->name);
1635
1636 ide_release_dma_engine(hwif);
1637
1638 mutex_unlock(&ide_cfg_mtx);
1639}
1640
1506void ide_host_free(struct ide_host *host) 1641void ide_host_free(struct ide_host *host)
1507{ 1642{
1508 ide_hwif_t *hwif; 1643 ide_hwif_t *hwif;
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 6538b63158bf..c1bb0f6784a9 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -60,154 +60,8 @@
60#include <linux/completion.h> 60#include <linux/completion.h>
61#include <linux/device.h> 61#include <linux/device.h>
62 62
63
64/* default maximum number of failures */
65#define IDE_DEFAULT_MAX_FAILURES 1
66
67struct class *ide_port_class; 63struct class *ide_port_class;
68 64
69static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
70 IDE2_MAJOR, IDE3_MAJOR,
71 IDE4_MAJOR, IDE5_MAJOR,
72 IDE6_MAJOR, IDE7_MAJOR,
73 IDE8_MAJOR, IDE9_MAJOR };
74
75DEFINE_MUTEX(ide_cfg_mtx);
76
77static void ide_port_init_devices_data(ide_hwif_t *);
78
79/*
80 * Do not even *think* about calling this!
81 */
82void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
83{
84 /* bulk initialize hwif & drive info with zeros */
85 memset(hwif, 0, sizeof(ide_hwif_t));
86
87 /* fill in any non-zero initial values */
88 hwif->index = index;
89 hwif->major = ide_hwif_to_major[index];
90
91 hwif->name[0] = 'i';
92 hwif->name[1] = 'd';
93 hwif->name[2] = 'e';
94 hwif->name[3] = '0' + index;
95
96 init_completion(&hwif->gendev_rel_comp);
97
98 hwif->tp_ops = &default_tp_ops;
99
100 ide_port_init_devices_data(hwif);
101}
102
103static void ide_port_init_devices_data(ide_hwif_t *hwif)
104{
105 int unit;
106
107 for (unit = 0; unit < MAX_DRIVES; ++unit) {
108 ide_drive_t *drive = &hwif->drives[unit];
109 u8 j = (hwif->index * MAX_DRIVES) + unit;
110
111 memset(drive, 0, sizeof(*drive));
112
113 drive->media = ide_disk;
114 drive->select = (unit << 4) | ATA_DEVICE_OBS;
115 drive->hwif = hwif;
116 drive->ready_stat = ATA_DRDY;
117 drive->bad_wstat = BAD_W_STAT;
118 drive->special.b.recalibrate = 1;
119 drive->special.b.set_geometry = 1;
120 drive->name[0] = 'h';
121 drive->name[1] = 'd';
122 drive->name[2] = 'a' + j;
123 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
124
125 INIT_LIST_HEAD(&drive->list);
126 init_completion(&drive->gendev_rel_comp);
127 }
128}
129
130static void __ide_port_unregister_devices(ide_hwif_t *hwif)
131{
132 int i;
133
134 for (i = 0; i < MAX_DRIVES; i++) {
135 ide_drive_t *drive = &hwif->drives[i];
136
137 if (drive->dev_flags & IDE_DFLAG_PRESENT) {
138 device_unregister(&drive->gendev);
139 wait_for_completion(&drive->gendev_rel_comp);
140 }
141 }
142}
143
144void ide_port_unregister_devices(ide_hwif_t *hwif)
145{
146 mutex_lock(&ide_cfg_mtx);
147 __ide_port_unregister_devices(hwif);
148 hwif->present = 0;
149 ide_port_init_devices_data(hwif);
150 mutex_unlock(&ide_cfg_mtx);
151}
152EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
153
154/**
155 * ide_unregister - free an IDE interface
156 * @hwif: IDE interface
157 *
158 * Perform the final unregister of an IDE interface.
159 *
160 * Locking:
161 * The caller must not hold the IDE locks.
162 *
163 * It is up to the caller to be sure there is no pending I/O here,
164 * and that the interface will not be reopened (present/vanishing
165 * locking isn't yet done BTW).
166 */
167
168void ide_unregister(ide_hwif_t *hwif)
169{
170 BUG_ON(in_interrupt());
171 BUG_ON(irqs_disabled());
172
173 mutex_lock(&ide_cfg_mtx);
174
175 if (hwif->present) {
176 __ide_port_unregister_devices(hwif);
177 hwif->present = 0;
178 }
179
180 ide_proc_unregister_port(hwif);
181
182 free_irq(hwif->irq, hwif);
183
184 device_unregister(hwif->portdev);
185 device_unregister(&hwif->gendev);
186 wait_for_completion(&hwif->gendev_rel_comp);
187
188 /*
189 * Remove us from the kernel's knowledge
190 */
191 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
192 kfree(hwif->sg_table);
193 unregister_blkdev(hwif->major, hwif->name);
194
195 ide_release_dma_engine(hwif);
196
197 mutex_unlock(&ide_cfg_mtx);
198}
199
200void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
201{
202 memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
203 hwif->irq = hw->irq;
204 hwif->chipset = hw->chipset;
205 hwif->dev = hw->dev;
206 hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
207 hwif->ack_intr = hw->ack_intr;
208 hwif->config_data = hw->config;
209}
210
211/* 65/*
212 * Locks for IDE setting functionality 66 * Locks for IDE setting functionality
213 */ 67 */
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f27f130ba000..ee2f461882ad 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -37,6 +37,7 @@ typedef unsigned char byte; /* used everywhere */
37/* 37/*
38 * Probably not wise to fiddle with these 38 * Probably not wise to fiddle with these
39 */ 39 */
40#define IDE_DEFAULT_MAX_FAILURES 1
40#define ERROR_MAX 8 /* Max read/write errors per sector */ 41#define ERROR_MAX 8 /* Max read/write errors per sector */
41#define ERROR_RESET 3 /* Reset controller every 4th retry */ 42#define ERROR_RESET 3 /* Reset controller every 4th retry */
42#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ 43#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
@@ -184,9 +185,6 @@ typedef struct hw_regs_s {
184 unsigned long config; 185 unsigned long config;
185} hw_regs_t; 186} hw_regs_t;
186 187
187void ide_init_port_data(struct hwif_s *, unsigned int);
188void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
189
190static inline void ide_std_init_ports(hw_regs_t *hw, 188static inline void ide_std_init_ports(hw_regs_t *hw,
191 unsigned long io_addr, 189 unsigned long io_addr,
192 unsigned long ctl_addr) 190 unsigned long ctl_addr)
@@ -1506,8 +1504,6 @@ static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1506static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} 1504static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1507#endif 1505#endif
1508 1506
1509void ide_unregister(ide_hwif_t *);
1510
1511void ide_register_region(struct gendisk *); 1507void ide_register_region(struct gendisk *);
1512void ide_unregister_region(struct gendisk *); 1508void ide_unregister_region(struct gendisk *);
1513 1509
@@ -1592,9 +1588,6 @@ static inline void ide_set_max_pio(ide_drive_t *drive)
1592 ide_set_pio(drive, 255); 1588 ide_set_pio(drive, 255);
1593} 1589}
1594 1590
1595extern spinlock_t ide_lock;
1596extern struct mutex ide_cfg_mtx;
1597
1598#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0) 1591#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1599 1592
1600char *ide_media_string(ide_drive_t *); 1593char *ide_media_string(ide_drive_t *);
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-10 08:20:49 -0400