tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
4 * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
5 *
6 */
7
8#include <linux/module.h>
9#include <linux/types.h>
10#include <linux/pci.h>
11#include <linux/ide.h>
12#include <linux/init.h>
13
14#include <asm/io.h>
15
16#define DRV_NAME "aec62xx"
17
18struct chipset_bus_clock_list_entry {
19 u8 xfer_speed;
20 u8 chipset_settings;
21 u8 ultra_settings;
22};
23
24static const struct chipset_bus_clock_list_entry aec6xxx_33_base [] = {
25 { XFER_UDMA_6, 0x31, 0x07 },
26 { XFER_UDMA_5, 0x31, 0x06 },
27 { XFER_UDMA_4, 0x31, 0x05 },
28 { XFER_UDMA_3, 0x31, 0x04 },
29 { XFER_UDMA_2, 0x31, 0x03 },
30 { XFER_UDMA_1, 0x31, 0x02 },
31 { XFER_UDMA_0, 0x31, 0x01 },
32
33 { XFER_MW_DMA_2, 0x31, 0x00 },
34 { XFER_MW_DMA_1, 0x31, 0x00 },
35 { XFER_MW_DMA_0, 0x0a, 0x00 },
36 { XFER_PIO_4, 0x31, 0x00 },
37 { XFER_PIO_3, 0x33, 0x00 },
38 { XFER_PIO_2, 0x08, 0x00 },
39 { XFER_PIO_1, 0x0a, 0x00 },
40 { XFER_PIO_0, 0x00, 0x00 },
41 { 0, 0x00, 0x00 }
42};
43
44static const struct chipset_bus_clock_list_entry aec6xxx_34_base [] = {
45 { XFER_UDMA_6, 0x41, 0x06 },
46 { XFER_UDMA_5, 0x41, 0x05 },
47 { XFER_UDMA_4, 0x41, 0x04 },
48 { XFER_UDMA_3, 0x41, 0x03 },
49 { XFER_UDMA_2, 0x41, 0x02 },
50 { XFER_UDMA_1, 0x41, 0x01 },
51 { XFER_UDMA_0, 0x41, 0x01 },
52
53 { XFER_MW_DMA_2, 0x41, 0x00 },
54 { XFER_MW_DMA_1, 0x42, 0x00 },
55 { XFER_MW_DMA_0, 0x7a, 0x00 },
56 { XFER_PIO_4, 0x41, 0x00 },
57 { XFER_PIO_3, 0x43, 0x00 },
58 { XFER_PIO_2, 0x78, 0x00 },
59 { XFER_PIO_1, 0x7a, 0x00 },
60 { XFER_PIO_0, 0x70, 0x00 },
61 { 0, 0x00, 0x00 }
62};
63
64/*
65 * TO DO: active tuning and correction of cards without a bios.
66 */
67static u8 pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
68{
69 for ( ; chipset_table->xfer_speed ; chipset_table++)
70 if (chipset_table->xfer_speed == speed) {
71 return chipset_table->chipset_settings;
72 }
73 return chipset_table->chipset_settings;
74}
75
76static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
77{
78 for ( ; chipset_table->xfer_speed ; chipset_table++)
79 if (chipset_table->xfer_speed == speed) {
80 return chipset_table->ultra_settings;
81 }
82 return chipset_table->ultra_settings;
83}
84
85static void aec6210_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
86{
87 struct pci_dev *dev = to_pci_dev(hwif->dev);
88 struct ide_host *host = pci_get_drvdata(dev);
89 struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
90 u16 d_conf = 0;
91 u8 ultra = 0, ultra_conf = 0;
92 u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
93 const u8 speed = drive->dma_mode;
94 unsigned long flags;
95
96 local_irq_save(flags);
97 /* 0x40|(2*drive->dn): Active, 0x41|(2*drive->dn): Recovery */
98 pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf);
99 tmp0 = pci_bus_clock_list(speed, bus_clock);
100 d_conf = ((tmp0 & 0xf0) << 4) | (tmp0 & 0xf);
101 pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf);
102
103 tmp1 = 0x00;
104 tmp2 = 0x00;
105 pci_read_config_byte(dev, 0x54, &ultra);
106 tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn))));
107 ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
108 tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn))));
109 pci_write_config_byte(dev, 0x54, tmp2);
110 local_irq_restore(flags);
111}
112
113static void aec6260_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
114{
115 struct pci_dev *dev = to_pci_dev(hwif->dev);
116 struct ide_host *host = pci_get_drvdata(dev);
117 struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
118 u8 unit = drive->dn & 1;
119 u8 tmp1 = 0, tmp2 = 0;
120 u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
121 const u8 speed = drive->dma_mode;
122 unsigned long flags;
123
124 local_irq_save(flags);
125 /* high 4-bits: Active, low 4-bits: Recovery */
126 pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf);
127 drive_conf = pci_bus_clock_list(speed, bus_clock);
128 pci_write_config_byte(dev, 0x40|drive->dn, drive_conf);
129
130 pci_read_config_byte(dev, (0x44|hwif->channel), &ultra);
131 tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit))));
132 ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock);
133 tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit))));
134 pci_write_config_byte(dev, (0x44|hwif->channel), tmp2);
135 local_irq_restore(flags);
136}
137
138static void aec_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
139{
140 drive->dma_mode = drive->pio_mode;
141 hwif->port_ops->set_dma_mode(hwif, drive);
142}
143
144static int init_chipset_aec62xx(struct pci_dev *dev)
145{
146 /* These are necessary to get AEC6280 Macintosh cards to work */
147 if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
148 (dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) {
149 u8 reg49h = 0, reg4ah = 0;
150 /* Clear reset and test bits. */
151 pci_read_config_byte(dev, 0x49, ®49h);
152 pci_write_config_byte(dev, 0x49, reg49h & ~0x30);
153 /* Enable chip interrupt output. */
154 pci_read_config_byte(dev, 0x4a, ®4ah);
155 pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01);
156 /* Enable burst mode. */
157 pci_read_config_byte(dev, 0x4a, ®4ah);
158 pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
159 }
160
161 return 0;
162}
163
164static u8 atp86x_cable_detect(ide_hwif_t *hwif)
165{
166 struct pci_dev *dev = to_pci_dev(hwif->dev);
167 u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
168
169 pci_read_config_byte(dev, 0x49, &ata66);
170
171 return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
172}
173
174static const struct ide_port_ops atp850_port_ops = {
175 .set_pio_mode = aec_set_pio_mode,
176 .set_dma_mode = aec6210_set_mode,
177};
178
179static const struct ide_port_ops atp86x_port_ops = {
180 .set_pio_mode = aec_set_pio_mode,
181 .set_dma_mode = aec6260_set_mode,
182 .cable_detect = atp86x_cable_detect,
183};
184
185static const struct ide_port_info aec62xx_chipsets[] = {
186 { /* 0: AEC6210 */
187 .name = DRV_NAME,
188 .init_chipset = init_chipset_aec62xx,
189 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
190 .port_ops = &atp850_port_ops,
191 .host_flags = IDE_HFLAG_SERIALIZE |
192 IDE_HFLAG_NO_ATAPI_DMA |
193 IDE_HFLAG_NO_DSC |
194 IDE_HFLAG_OFF_BOARD,
195 .pio_mask = ATA_PIO4,
196 .mwdma_mask = ATA_MWDMA2,
197 .udma_mask = ATA_UDMA2,
198 },
199 { /* 1: AEC6260 */
200 .name = DRV_NAME,
201 .init_chipset = init_chipset_aec62xx,
202 .port_ops = &atp86x_port_ops,
203 .host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_NO_AUTODMA |
204 IDE_HFLAG_OFF_BOARD,
205 .pio_mask = ATA_PIO4,
206 .mwdma_mask = ATA_MWDMA2,
207 .udma_mask = ATA_UDMA4,
208 },
209 { /* 2: AEC6260R */
210 .name = DRV_NAME,
211 .init_chipset = init_chipset_aec62xx,
212 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
213 .port_ops = &atp86x_port_ops,
214 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
215 IDE_HFLAG_NON_BOOTABLE,
216 .pio_mask = ATA_PIO4,
217 .mwdma_mask = ATA_MWDMA2,
218 .udma_mask = ATA_UDMA4,
219 },
220 { /* 3: AEC6280 */
221 .name = DRV_NAME,
222 .init_chipset = init_chipset_aec62xx,
223 .port_ops = &atp86x_port_ops,
224 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
225 IDE_HFLAG_OFF_BOARD,
226 .pio_mask = ATA_PIO4,
227 .mwdma_mask = ATA_MWDMA2,
228 .udma_mask = ATA_UDMA5,
229 },
230 { /* 4: AEC6280R */
231 .name = DRV_NAME,
232 .init_chipset = init_chipset_aec62xx,
233 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
234 .port_ops = &atp86x_port_ops,
235 .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
236 IDE_HFLAG_OFF_BOARD,
237 .pio_mask = ATA_PIO4,
238 .mwdma_mask = ATA_MWDMA2,
239 .udma_mask = ATA_UDMA5,
240 }
241};
242
243/**
244 * aec62xx_init_one - called when a AEC is found
245 * @dev: the aec62xx device
246 * @id: the matching pci id
247 *
248 * Called when the PCI registration layer (or the IDE initialization)
249 * finds a device matching our IDE device tables.
250 *
251 * NOTE: since we're going to modify the 'name' field for AEC-6[26]80[R]
252 * chips, pass a local copy of 'struct ide_port_info' down the call chain.
253 */
254
255static int aec62xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
256{
257 const struct chipset_bus_clock_list_entry *bus_clock;
258 struct ide_port_info d;
259 u8 idx = id->driver_data;
260 int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
261 int err;
262
263 if (bus_speed <= 33)
264 bus_clock = aec6xxx_33_base;
265 else
266 bus_clock = aec6xxx_34_base;
267
268 err = pci_enable_device(dev);
269 if (err)
270 return err;
271
272 d = aec62xx_chipsets[idx];
273
274 if (idx == 3 || idx == 4) {
275 unsigned long dma_base = pci_resource_start(dev, 4);
276
277 if (inb(dma_base + 2) & 0x10) {
278 printk(KERN_INFO DRV_NAME " %s: AEC6880%s card detected"
279 "\n", pci_name(dev), (idx == 4) ? "R" : "");
280 d.udma_mask = ATA_UDMA6;
281 }
282 }
283
284 err = ide_pci_init_one(dev, &d, (void *)bus_clock);
285 if (err)
286 pci_disable_device(dev);
287
288 return err;
289}
290
291static void aec62xx_remove(struct pci_dev *dev)
292{
293 ide_pci_remove(dev);
294 pci_disable_device(dev);
295}
296
297static const struct pci_device_id aec62xx_pci_tbl[] = {
298 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF), 0 },
299 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860), 1 },
300 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R), 2 },
301 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865), 3 },
302 { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865R), 4 },
303 { 0, },
304};
305MODULE_DEVICE_TABLE(pci, aec62xx_pci_tbl);
306
307static struct pci_driver aec62xx_pci_driver = {
308 .name = "AEC62xx_IDE",
309 .id_table = aec62xx_pci_tbl,
310 .probe = aec62xx_init_one,
311 .remove = aec62xx_remove,
312 .suspend = ide_pci_suspend,
313 .resume = ide_pci_resume,
314};
315
316static int __init aec62xx_ide_init(void)
317{
318 return ide_pci_register_driver(&aec62xx_pci_driver);
319}
320
321static void __exit aec62xx_ide_exit(void)
322{
323 pci_unregister_driver(&aec62xx_pci_driver);
324}
325
326module_init(aec62xx_ide_init);
327module_exit(aec62xx_ide_exit);
328
329MODULE_AUTHOR("Andre Hedrick");
330MODULE_DESCRIPTION("PCI driver module for ARTOP AEC62xx IDE");
331MODULE_LICENSE("GPL");