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18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <linux/blkdev.h>
23#include <linux/delay.h>
24#include <scsi/scsi_host.h>
25#include <linux/libata.h>
26#include <linux/platform_device.h>
27
28#define DRV_NAME "pata_qdi"
29#define DRV_VERSION "0.3.1"
30
31#define NR_HOST 4
32
33struct qdi_data {
34 unsigned long timing;
35 u8 clock[2];
36 u8 last;
37 int fast;
38 struct platform_device *platform_dev;
39
40};
41
42static struct ata_host *qdi_host[NR_HOST];
43static struct qdi_data qdi_data[NR_HOST];
44static int nr_qdi_host;
45
46#ifdef MODULE
47static int probe_qdi = 1;
48#else
49static int probe_qdi;
50#endif
51
52static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
53{
54 struct ata_timing t;
55 struct qdi_data *qdi = ap->host->private_data;
56 int active, recovery;
57 u8 timing;
58
59
60 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
61
62 if (qdi->fast) {
63 active = 8 - FIT(t.active, 1, 8);
64 recovery = 18 - FIT(t.recover, 3, 18);
65 } else {
66 active = 9 - FIT(t.active, 2, 9);
67 recovery = 15 - FIT(t.recover, 0, 15);
68 }
69 timing = (recovery << 4) | active | 0x08;
70
71 qdi->clock[adev->devno] = timing;
72
73 outb(timing, qdi->timing);
74}
75
76static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
77{
78 struct ata_timing t;
79 struct qdi_data *qdi = ap->host->private_data;
80 int active, recovery;
81 u8 timing;
82
83
84 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
85
86 if (qdi->fast) {
87 active = 8 - FIT(t.active, 1, 8);
88 recovery = 18 - FIT(t.recover, 3, 18);
89 } else {
90 active = 9 - FIT(t.active, 2, 9);
91 recovery = 15 - FIT(t.recover, 0, 15);
92 }
93 timing = (recovery << 4) | active | 0x08;
94
95 qdi->clock[adev->devno] = timing;
96
97 outb(timing, qdi->timing);
98
99
100 if (adev->class != ATA_DEV_ATA)
101 outb(0x5F, (qdi->timing & 0xFFF0) + 3);
102}
103
104
105
106
107
108
109
110
111
112static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)
113{
114 struct ata_port *ap = qc->ap;
115 struct ata_device *adev = qc->dev;
116 struct qdi_data *qdi = ap->host->private_data;
117
118 if (qdi->clock[adev->devno] != qdi->last) {
119 if (adev->pio_mode) {
120 qdi->last = qdi->clock[adev->devno];
121 outb(qdi->clock[adev->devno], qdi->timing);
122 }
123 }
124 return ata_qc_issue_prot(qc);
125}
126
127static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
128{
129 struct ata_port *ap = adev->link->ap;
130 int slop = buflen & 3;
131
132 if (ata_id_has_dword_io(adev->id)) {
133 if (write_data)
134 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
135 else
136 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
137
138 if (unlikely(slop)) {
139 __le32 pad = 0;
140 if (write_data) {
141 memcpy(&pad, buf + buflen - slop, slop);
142 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
143 } else {
144 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
145 memcpy(buf + buflen - slop, &pad, slop);
146 }
147 }
148 } else
149 ata_data_xfer(adev, buf, buflen, write_data);
150}
151
152static struct scsi_host_template qdi_sht = {
153 .module = THIS_MODULE,
154 .name = DRV_NAME,
155 .ioctl = ata_scsi_ioctl,
156 .queuecommand = ata_scsi_queuecmd,
157 .can_queue = ATA_DEF_QUEUE,
158 .this_id = ATA_SHT_THIS_ID,
159 .sg_tablesize = LIBATA_MAX_PRD,
160 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
161 .emulated = ATA_SHT_EMULATED,
162 .use_clustering = ATA_SHT_USE_CLUSTERING,
163 .proc_name = DRV_NAME,
164 .dma_boundary = ATA_DMA_BOUNDARY,
165 .slave_configure = ata_scsi_slave_config,
166 .slave_destroy = ata_scsi_slave_destroy,
167 .bios_param = ata_std_bios_param,
168};
169
170static struct ata_port_operations qdi6500_port_ops = {
171 .set_piomode = qdi6500_set_piomode,
172
173 .tf_load = ata_tf_load,
174 .tf_read = ata_tf_read,
175 .check_status = ata_check_status,
176 .exec_command = ata_exec_command,
177 .dev_select = ata_std_dev_select,
178
179 .freeze = ata_bmdma_freeze,
180 .thaw = ata_bmdma_thaw,
181 .error_handler = ata_bmdma_error_handler,
182 .post_internal_cmd = ata_bmdma_post_internal_cmd,
183 .cable_detect = ata_cable_40wire,
184
185 .qc_prep = ata_qc_prep,
186 .qc_issue = qdi_qc_issue_prot,
187
188 .data_xfer = qdi_data_xfer,
189
190 .irq_clear = ata_bmdma_irq_clear,
191 .irq_on = ata_irq_on,
192
193 .port_start = ata_sff_port_start,
194};
195
196static struct ata_port_operations qdi6580_port_ops = {
197 .set_piomode = qdi6580_set_piomode,
198
199 .tf_load = ata_tf_load,
200 .tf_read = ata_tf_read,
201 .check_status = ata_check_status,
202 .exec_command = ata_exec_command,
203 .dev_select = ata_std_dev_select,
204
205 .freeze = ata_bmdma_freeze,
206 .thaw = ata_bmdma_thaw,
207 .error_handler = ata_bmdma_error_handler,
208 .post_internal_cmd = ata_bmdma_post_internal_cmd,
209 .cable_detect = ata_cable_40wire,
210
211 .qc_prep = ata_qc_prep,
212 .qc_issue = qdi_qc_issue_prot,
213
214 .data_xfer = qdi_data_xfer,
215
216 .irq_clear = ata_bmdma_irq_clear,
217 .irq_on = ata_irq_on,
218
219 .port_start = ata_sff_port_start,
220};
221
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225
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229
230
231
232
233static __init int qdi_init_one(unsigned long port, int type, unsigned long io, int irq, int fast)
234{
235 unsigned long ctl = io + 0x206;
236 struct platform_device *pdev;
237 struct ata_host *host;
238 struct ata_port *ap;
239 void __iomem *io_addr, *ctl_addr;
240 int ret;
241
242
243
244
245
246 pdev = platform_device_register_simple(DRV_NAME, nr_qdi_host, NULL, 0);
247 if (IS_ERR(pdev))
248 return PTR_ERR(pdev);
249
250 ret = -ENOMEM;
251 io_addr = devm_ioport_map(&pdev->dev, io, 8);
252 ctl_addr = devm_ioport_map(&pdev->dev, ctl, 1);
253 if (!io_addr || !ctl_addr)
254 goto fail;
255
256 ret = -ENOMEM;
257 host = ata_host_alloc(&pdev->dev, 1);
258 if (!host)
259 goto fail;
260 ap = host->ports[0];
261
262 if (type == 6580) {
263 ap->ops = &qdi6580_port_ops;
264 ap->pio_mask = 0x1F;
265 ap->flags |= ATA_FLAG_SLAVE_POSS;
266 } else {
267 ap->ops = &qdi6500_port_ops;
268 ap->pio_mask = 0x07;
269 ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
270 }
271
272 ap->ioaddr.cmd_addr = io_addr;
273 ap->ioaddr.altstatus_addr = ctl_addr;
274 ap->ioaddr.ctl_addr = ctl_addr;
275 ata_std_ports(&ap->ioaddr);
276
277 ata_port_desc(ap, "cmd %lx ctl %lx", io, ctl);
278
279
280
281
282 ap->private_data = &qdi_data[nr_qdi_host];
283
284 qdi_data[nr_qdi_host].timing = port;
285 qdi_data[nr_qdi_host].fast = fast;
286 qdi_data[nr_qdi_host].platform_dev = pdev;
287
288 printk(KERN_INFO DRV_NAME": qd%d at 0x%lx.\n", type, io);
289
290
291 ret = ata_host_activate(host, irq, ata_interrupt, 0, &qdi_sht);
292 if (ret)
293 goto fail;
294
295 qdi_host[nr_qdi_host++] = dev_get_drvdata(&pdev->dev);
296 return 0;
297
298 fail:
299 platform_device_unregister(pdev);
300 return ret;
301}
302
303
304
305
306
307
308
309static __init int qdi_init(void)
310{
311 unsigned long flags;
312 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
313 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
314 static const int ide_irq[2] = { 14, 15 };
315
316 int ct = 0;
317 int i;
318
319 if (probe_qdi == 0)
320 return -ENODEV;
321
322
323
324
325
326 for (i = 0; i < 2; i++) {
327 unsigned long port = qd_port[i];
328 u8 r, res;
329
330
331 if (request_region(port, 2, "pata_qdi")) {
332
333 local_irq_save(flags);
334 r = inb_p(port);
335 outb_p(0x19, port);
336 res = inb_p(port);
337 outb_p(r, port);
338 local_irq_restore(flags);
339
340
341 if (res == 0x19)
342 {
343 release_region(port, 2);
344 continue;
345 }
346
347
348 r = inb_p(port + 1);
349 if ((r & 2) >> 1 != i) {
350 release_region(port, 2);
351 continue;
352 }
353
354
355 if ((r & 0xF0) == 0xC0) {
356
357 if (r & 8) {
358
359 release_region(port, 2);
360 continue;
361 }
362 if (qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)
363 ct++;
364 }
365 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
366
367 if (!request_region(port + 2 , 2, "pata_qdi"))
368 {
369 release_region(port, 2);
370 continue;
371 }
372 res = inb(port + 3);
373 if (res & 1) {
374
375 if (qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)
376 ct++;
377 } else {
378
379 if (qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04) == 0)
380 ct++;
381 if (qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04) == 0)
382 ct++;
383 }
384 }
385 }
386 }
387 if (ct != 0)
388 return 0;
389 return -ENODEV;
390}
391
392static __exit void qdi_exit(void)
393{
394 int i;
395
396 for (i = 0; i < nr_qdi_host; i++) {
397 ata_host_detach(qdi_host[i]);
398
399
400
401 release_region(qdi_data[i].timing, 2);
402 platform_device_unregister(qdi_data[i].platform_dev);
403 }
404}
405
406MODULE_AUTHOR("Alan Cox");
407MODULE_DESCRIPTION("low-level driver for qdi ATA");
408MODULE_LICENSE("GPL");
409MODULE_VERSION(DRV_VERSION);
410
411module_init(qdi_init);
412module_exit(qdi_exit);
413
414module_param(probe_qdi, int, 0);
415
416
