?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
OpenRISC: No need to reset handler if SA_ONESHOT
[linux-2.6.git] / drivers / ide / aec62xx.c
blob57d00caefc86c2762b1c5eeee5c3bd8e9a408b76
1 /*
2 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
3 * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
4 *
5 */
6
7 #include <linux/module.h>
8 #include <linux/types.h>
9 #include <linux/pci.h>
10 #include <linux/ide.h>
11 #include <linux/init.h>
12
13 #include <asm/io.h>
14
15 #define DRV_NAME "aec62xx"
16
17 struct chipset_bus_clock_list_entry {
18 u8 xfer_speed;
19 u8 chipset_settings;
20 u8 ultra_settings;
21 };
22
23 static const struct chipset_bus_clock_list_entry aec6xxx_33_base [] = {
24 { XFER_UDMA_6, 0x31, 0x07 },
25 { XFER_UDMA_5, 0x31, 0x06 },
26 { XFER_UDMA_4, 0x31, 0x05 },
27 { XFER_UDMA_3, 0x31, 0x04 },
28 { XFER_UDMA_2, 0x31, 0x03 },
29 { XFER_UDMA_1, 0x31, 0x02 },
30 { XFER_UDMA_0, 0x31, 0x01 },
31
32 { XFER_MW_DMA_2, 0x31, 0x00 },
33 { XFER_MW_DMA_1, 0x31, 0x00 },
34 { XFER_MW_DMA_0, 0x0a, 0x00 },
35 { XFER_PIO_4, 0x31, 0x00 },
36 { XFER_PIO_3, 0x33, 0x00 },
37 { XFER_PIO_2, 0x08, 0x00 },
38 { XFER_PIO_1, 0x0a, 0x00 },
39 { XFER_PIO_0, 0x00, 0x00 },
40 { 0, 0x00, 0x00 }
41 };
42
43 static const struct chipset_bus_clock_list_entry aec6xxx_34_base [] = {
44 { XFER_UDMA_6, 0x41, 0x06 },
45 { XFER_UDMA_5, 0x41, 0x05 },
46 { XFER_UDMA_4, 0x41, 0x04 },
47 { XFER_UDMA_3, 0x41, 0x03 },
48 { XFER_UDMA_2, 0x41, 0x02 },
49 { XFER_UDMA_1, 0x41, 0x01 },
50 { XFER_UDMA_0, 0x41, 0x01 },
51
52 { XFER_MW_DMA_2, 0x41, 0x00 },
53 { XFER_MW_DMA_1, 0x42, 0x00 },
54 { XFER_MW_DMA_0, 0x7a, 0x00 },
55 { XFER_PIO_4, 0x41, 0x00 },
56 { XFER_PIO_3, 0x43, 0x00 },
57 { XFER_PIO_2, 0x78, 0x00 },
58 { XFER_PIO_1, 0x7a, 0x00 },
59 { XFER_PIO_0, 0x70, 0x00 },
60 { 0, 0x00, 0x00 }
61 };
62
63 /*
64 * TO DO: active tuning and correction of cards without a bios.
65 */
66 static u8 pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
67 {
68 for ( ; chipset_table->xfer_speed ; chipset_table++)
69 if (chipset_table->xfer_speed == speed) {
70 return chipset_table->chipset_settings;
71 }
72 return chipset_table->chipset_settings;
73 }
74
75 static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
76 {
77 for ( ; chipset_table->xfer_speed ; chipset_table++)
78 if (chipset_table->xfer_speed == speed) {
79 return chipset_table->ultra_settings;
80 }
81 return chipset_table->ultra_settings;
82 }
83
84 static void aec6210_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
85 {
86 struct pci_dev *dev = to_pci_dev(hwif->dev);
87 struct ide_host *host = pci_get_drvdata(dev);
88 struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
89 u16 d_conf = 0;
90 u8 ultra = 0, ultra_conf = 0;
91 u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
92 const u8 speed = drive->dma_mode;
93 unsigned long flags;
94
95 local_irq_save(flags);
96 /* 0x40|(2*drive->dn): Active, 0x41|(2*drive->dn): Recovery */
97 pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf);
98 tmp0 = pci_bus_clock_list(speed, bus_clock);
99 d_conf = ((tmp0 & 0xf0) << 4) | (tmp0 & 0xf);
100 pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf);
101
102 tmp1 = 0x00;
103 tmp2 = 0x00;
104 pci_read_config_byte(dev, 0x54, &ultra);
105 tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn))));
106 ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
107 tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn))));
108 pci_write_config_byte(dev, 0x54, tmp2);
109 local_irq_restore(flags);
110 }
111
112 static void aec6260_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
113 {
114 struct pci_dev *dev = to_pci_dev(hwif->dev);
115 struct ide_host *host = pci_get_drvdata(dev);
116 struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
117 u8 unit = drive->dn & 1;
118 u8 tmp1 = 0, tmp2 = 0;
119 u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
120 const u8 speed = drive->dma_mode;
121 unsigned long flags;
122
123 local_irq_save(flags);
124 /* high 4-bits: Active, low 4-bits: Recovery */
125 pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf);
126 drive_conf = pci_bus_clock_list(speed, bus_clock);
127 pci_write_config_byte(dev, 0x40|drive->dn, drive_conf);
128
129 pci_read_config_byte(dev, (0x44|hwif->channel), &ultra);
130 tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit))));
131 ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
132 tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit))));
133 pci_write_config_byte(dev, (0x44|hwif->channel), tmp2);
134 local_irq_restore(flags);
135 }
136
137 static void aec_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
138 {
139 drive->dma_mode = drive->pio_mode;
140 hwif->port_ops->set_dma_mode(hwif, drive);
141 }
142
143 static int init_chipset_aec62xx(struct pci_dev *dev)
144 {
145 /* These are necessary to get AEC6280 Macintosh cards to work */
146 if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
147 (dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) {
148 u8 reg49h = 0, reg4ah = 0;
149 /* Clear reset and test bits. */
150 pci_read_config_byte(dev, 0x49, &reg49h);
151 pci_write_config_byte(dev, 0x49, reg49h & ~0x30);
152 /* Enable chip interrupt output. */
153 pci_read_config_byte(dev, 0x4a, &reg4ah);
154 pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01);
155 /* Enable burst mode. */
156 pci_read_config_byte(dev, 0x4a, &reg4ah);
157 pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
158 }
159
160 return 0;
161 }
162
163 static u8 atp86x_cable_detect(ide_hwif_t *hwif)
164 {
165 struct pci_dev *dev = to_pci_dev(hwif->dev);
166 u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
167
168 pci_read_config_byte(dev, 0x49, &ata66);
169
170 return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
171 }
172
173 static const struct ide_port_ops atp850_port_ops = {
174 .set_pio_mode = aec_set_pio_mode,
175 .set_dma_mode = aec6210_set_mode,
176 };
177
178 static const struct ide_port_ops atp86x_port_ops = {
179 .set_pio_mode = aec_set_pio_mode,
180 .set_dma_mode = aec6260_set_mode,
181 .cable_detect = atp86x_cable_detect,
182 };
183
184 static const struct ide_port_info aec62xx_chipsets[] __devinitdata = {
185 { /* 0: AEC6210 */
186 .name = DRV_NAME,
187 .init_chipset = init_chipset_aec62xx,
188 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
189 .port_ops = &atp850_port_ops,
190 .host_flags = IDE_HFLAG_SERIALIZE |
191 IDE_HFLAG_NO_ATAPI_DMA |
192 IDE_HFLAG_NO_DSC |
193 IDE_HFLAG_OFF_BOARD,
194 .pio_mask = ATA_PIO4,
195 .mwdma_mask = ATA_MWDMA2,
196 .udma_mask = ATA_UDMA2,
197 },
198 { /* 1: AEC6260 */
199 .name = DRV_NAME,
200 .init_chipset = init_chipset_aec62xx,
201 .port_ops = &atp86x_port_ops,
202 .host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_NO_AUTODMA |
203 IDE_HFLAG_OFF_BOARD,
204 .pio_mask = ATA_PIO4,
205 .mwdma_mask = ATA_MWDMA2,
206 .udma_mask = ATA_UDMA4,
207 },
208 { /* 2: AEC6260R */
209 .name = DRV_NAME,
210 .init_chipset = init_chipset_aec62xx,
211 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
212 .port_ops = &atp86x_port_ops,
213 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
214 IDE_HFLAG_NON_BOOTABLE,
215 .pio_mask = ATA_PIO4,
216 .mwdma_mask = ATA_MWDMA2,
217 .udma_mask = ATA_UDMA4,
218 },
219 { /* 3: AEC6280 */
220 .name = DRV_NAME,
221 .init_chipset = init_chipset_aec62xx,
222 .port_ops = &atp86x_port_ops,
223 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
224 IDE_HFLAG_OFF_BOARD,
225 .pio_mask = ATA_PIO4,
226 .mwdma_mask = ATA_MWDMA2,
227 .udma_mask = ATA_UDMA5,
228 },
229 { /* 4: AEC6280R */
230 .name = DRV_NAME,
231 .init_chipset = init_chipset_aec62xx,
232 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
233 .port_ops = &atp86x_port_ops,
234 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
235 IDE_HFLAG_OFF_BOARD,
236 .pio_mask = ATA_PIO4,
237 .mwdma_mask = ATA_MWDMA2,
238 .udma_mask = ATA_UDMA5,
239 }
240 };
241
242 /**
243 * aec62xx_init_one - called when a AEC is found
244 * @dev: the aec62xx device
245 * @id: the matching pci id
246 *
247 * Called when the PCI registration layer (or the IDE initialization)
248 * finds a device matching our IDE device tables.
249 *
250 * NOTE: since we're going to modify the 'name' field for AEC-6[26]80[R]
251 * chips, pass a local copy of 'struct ide_port_info' down the call chain.
252 */
253
254 static int __devinit aec62xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
255 {
256 const struct chipset_bus_clock_list_entry *bus_clock;
257 struct ide_port_info d;
258 u8 idx = id->driver_data;
259 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
260 int err;
261
262 if (bus_speed <= 33)
263 bus_clock = aec6xxx_33_base;
264 else
265 bus_clock = aec6xxx_34_base;
266
267 err = pci_enable_device(dev);
268 if (err)
269 return err;
270
271 d = aec62xx_chipsets[idx];
272
273 if (idx == 3 || idx == 4) {
274 unsigned long dma_base = pci_resource_start(dev, 4);
275
276 if (inb(dma_base + 2) & 0x10) {
277 printk(KERN_INFO DRV_NAME " %s: AEC6880%s card detected"
278 "\n", pci_name(dev), (idx == 4) ? "R" : "");
279 d.udma_mask = ATA_UDMA6;
280 }
281 }
282
283 err = ide_pci_init_one(dev, &d, (void *)bus_clock);
284 if (err)
285 pci_disable_device(dev);
286
287 return err;
288 }
289
290 static void __devexit aec62xx_remove(struct pci_dev *dev)
291 {
292 ide_pci_remove(dev);
293 pci_disable_device(dev);
294 }
295
296 static const struct pci_device_id aec62xx_pci_tbl[] = {
297 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF), 0 },
298 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860), 1 },
299 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R), 2 },
300 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865), 3 },
301 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865R), 4 },
302 { 0, },
303 };
304 MODULE_DEVICE_TABLE(pci, aec62xx_pci_tbl);
305
306 static struct pci_driver aec62xx_pci_driver = {
307 .name = "AEC62xx_IDE",
308 .id_table = aec62xx_pci_tbl,
309 .probe = aec62xx_init_one,
310 .remove = __devexit_p(aec62xx_remove),
311 .suspend = ide_pci_suspend,
312 .resume = ide_pci_resume,
313 };
314
315 static int __init aec62xx_ide_init(void)
316 {
317 return ide_pci_register_driver(&aec62xx_pci_driver);
318 }
319
320 static void __exit aec62xx_ide_exit(void)
321 {
322 pci_unregister_driver(&aec62xx_pci_driver);
323 }
324
325 module_init(aec62xx_ide_init);
326 module_exit(aec62xx_ide_exit);
327
328 MODULE_AUTHOR("Andre Hedrick");
329 MODULE_DESCRIPTION("PCI driver module for ARTOP AEC62xx IDE");
330 MODULE_LICENSE("GPL");
Linus' kernel tree