1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47#include <linux/module.h>
48#include <linux/kernel.h>
49#include <linux/init.h>
50#include <linux/errno.h>
51#include <linux/delay.h>
52#include <linux/pci.h>
53#include <linux/circ_buf.h>
54
55#include <scsi/scsi_cmnd.h>
56#include <scsi/scsi_device.h>
57#include <scsi/scsi_host.h>
58#include <scsi/scsi_transport.h>
59#include "arcmsr.h"
60
61static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
62 struct kobject *kobj,
63 struct bin_attribute *bin,
64 char *buf, loff_t off,
65 size_t count)
66{
67 struct device *dev = container_of(kobj,struct device,kobj);
68 struct Scsi_Host *host = class_to_shost(dev);
69 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
70 uint8_t *ptmpQbuffer;
71 int32_t allxfer_len = 0;
72 unsigned long flags;
73
74 if (!capable(CAP_SYS_ADMIN))
75 return -EACCES;
76
77
78 ptmpQbuffer = (uint8_t *)buf;
79 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
80 if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
81 unsigned int tail = acb->rqbuf_getIndex;
82 unsigned int head = acb->rqbuf_putIndex;
83 unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER);
84
85 allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER);
86 if (allxfer_len > ARCMSR_API_DATA_BUFLEN)
87 allxfer_len = ARCMSR_API_DATA_BUFLEN;
88
89 if (allxfer_len <= cnt_to_end)
90 memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len);
91 else {
92 memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end);
93 memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end);
94 }
95 acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER;
96 }
97 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
98 struct QBUFFER __iomem *prbuffer;
99 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
100 prbuffer = arcmsr_get_iop_rqbuffer(acb);
101 if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
102 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
103 }
104 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
105 return allxfer_len;
106}
107
108static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
109 struct kobject *kobj,
110 struct bin_attribute *bin,
111 char *buf, loff_t off,
112 size_t count)
113{
114 struct device *dev = container_of(kobj,struct device,kobj);
115 struct Scsi_Host *host = class_to_shost(dev);
116 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
117 int32_t user_len, cnt2end;
118 uint8_t *pQbuffer, *ptmpuserbuffer;
119 unsigned long flags;
120
121 if (!capable(CAP_SYS_ADMIN))
122 return -EACCES;
123 if (count > ARCMSR_API_DATA_BUFLEN)
124 return -EINVAL;
125
126 ptmpuserbuffer = (uint8_t *)buf;
127 user_len = (int32_t)count;
128 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
129 if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) {
130 arcmsr_write_ioctldata2iop(acb);
131 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
132 return 0;
133 } else {
134 pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
135 cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex;
136 if (user_len > cnt2end) {
137 memcpy(pQbuffer, ptmpuserbuffer, cnt2end);
138 ptmpuserbuffer += cnt2end;
139 user_len -= cnt2end;
140 acb->wqbuf_putIndex = 0;
141 pQbuffer = acb->wqbuffer;
142 }
143 memcpy(pQbuffer, ptmpuserbuffer, user_len);
144 acb->wqbuf_putIndex += user_len;
145 acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
146 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
147 acb->acb_flags &=
148 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
149 arcmsr_write_ioctldata2iop(acb);
150 }
151 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
152 return count;
153 }
154}
155
156static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
157 struct kobject *kobj,
158 struct bin_attribute *bin,
159 char *buf, loff_t off,
160 size_t count)
161{
162 struct device *dev = container_of(kobj,struct device,kobj);
163 struct Scsi_Host *host = class_to_shost(dev);
164 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
165 uint8_t *pQbuffer;
166 unsigned long flags;
167
168 if (!capable(CAP_SYS_ADMIN))
169 return -EACCES;
170
171 arcmsr_clear_iop2drv_rqueue_buffer(acb);
172 acb->acb_flags |=
173 (ACB_F_MESSAGE_WQBUFFER_CLEARED
174 | ACB_F_MESSAGE_RQBUFFER_CLEARED
175 | ACB_F_MESSAGE_WQBUFFER_READED);
176 spin_lock_irqsave(&acb->rqbuffer_lock, flags);
177 acb->rqbuf_getIndex = 0;
178 acb->rqbuf_putIndex = 0;
179 spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
180 spin_lock_irqsave(&acb->wqbuffer_lock, flags);
181 acb->wqbuf_getIndex = 0;
182 acb->wqbuf_putIndex = 0;
183 spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
184 pQbuffer = acb->rqbuffer;
185 memset(pQbuffer, 0, sizeof (struct QBUFFER));
186 pQbuffer = acb->wqbuffer;
187 memset(pQbuffer, 0, sizeof (struct QBUFFER));
188 return 1;
189}
190
191static const struct bin_attribute arcmsr_sysfs_message_read_attr = {
192 .attr = {
193 .name = "mu_read",
194 .mode = S_IRUSR ,
195 },
196 .size = ARCMSR_API_DATA_BUFLEN,
197 .read = arcmsr_sysfs_iop_message_read,
198};
199
200static const struct bin_attribute arcmsr_sysfs_message_write_attr = {
201 .attr = {
202 .name = "mu_write",
203 .mode = S_IWUSR,
204 },
205 .size = ARCMSR_API_DATA_BUFLEN,
206 .write = arcmsr_sysfs_iop_message_write,
207};
208
209static const struct bin_attribute arcmsr_sysfs_message_clear_attr = {
210 .attr = {
211 .name = "mu_clear",
212 .mode = S_IWUSR,
213 },
214 .size = 1,
215 .write = arcmsr_sysfs_iop_message_clear,
216};
217
218int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
219{
220 struct Scsi_Host *host = acb->host;
221 int error;
222
223 error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
224 if (error) {
225 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
226 goto error_bin_file_message_read;
227 }
228 error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
229 if (error) {
230 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
231 goto error_bin_file_message_write;
232 }
233 error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
234 if (error) {
235 printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
236 goto error_bin_file_message_clear;
237 }
238 return 0;
239error_bin_file_message_clear:
240 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
241error_bin_file_message_write:
242 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
243error_bin_file_message_read:
244 return error;
245}
246
247void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb)
248{
249 struct Scsi_Host *host = acb->host;
250
251 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
252 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
253 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
254}
255
256
257static ssize_t
258arcmsr_attr_host_driver_version(struct device *dev,
259 struct device_attribute *attr, char *buf)
260{
261 return snprintf(buf, PAGE_SIZE,
262 "%s\n",
263 ARCMSR_DRIVER_VERSION);
264}
265
266static ssize_t
267arcmsr_attr_host_driver_posted_cmd(struct device *dev,
268 struct device_attribute *attr, char *buf)
269{
270 struct Scsi_Host *host = class_to_shost(dev);
271 struct AdapterControlBlock *acb =
272 (struct AdapterControlBlock *) host->hostdata;
273 return snprintf(buf, PAGE_SIZE,
274 "%4d\n",
275 atomic_read(&acb->ccboutstandingcount));
276}
277
278static ssize_t
279arcmsr_attr_host_driver_reset(struct device *dev,
280 struct device_attribute *attr, char *buf)
281{
282 struct Scsi_Host *host = class_to_shost(dev);
283 struct AdapterControlBlock *acb =
284 (struct AdapterControlBlock *) host->hostdata;
285 return snprintf(buf, PAGE_SIZE,
286 "%4d\n",
287 acb->num_resets);
288}
289
290static ssize_t
291arcmsr_attr_host_driver_abort(struct device *dev,
292 struct device_attribute *attr, char *buf)
293{
294 struct Scsi_Host *host = class_to_shost(dev);
295 struct AdapterControlBlock *acb =
296 (struct AdapterControlBlock *) host->hostdata;
297 return snprintf(buf, PAGE_SIZE,
298 "%4d\n",
299 acb->num_aborts);
300}
301
302static ssize_t
303arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr,
304 char *buf)
305{
306 struct Scsi_Host *host = class_to_shost(dev);
307 struct AdapterControlBlock *acb =
308 (struct AdapterControlBlock *) host->hostdata;
309 return snprintf(buf, PAGE_SIZE,
310 "%s\n",
311 acb->firm_model);
312}
313
314static ssize_t
315arcmsr_attr_host_fw_version(struct device *dev,
316 struct device_attribute *attr, char *buf)
317{
318 struct Scsi_Host *host = class_to_shost(dev);
319 struct AdapterControlBlock *acb =
320 (struct AdapterControlBlock *) host->hostdata;
321
322 return snprintf(buf, PAGE_SIZE,
323 "%s\n",
324 acb->firm_version);
325}
326
327static ssize_t
328arcmsr_attr_host_fw_request_len(struct device *dev,
329 struct device_attribute *attr, char *buf)
330{
331 struct Scsi_Host *host = class_to_shost(dev);
332 struct AdapterControlBlock *acb =
333 (struct AdapterControlBlock *) host->hostdata;
334
335 return snprintf(buf, PAGE_SIZE,
336 "%4d\n",
337 acb->firm_request_len);
338}
339
340static ssize_t
341arcmsr_attr_host_fw_numbers_queue(struct device *dev,
342 struct device_attribute *attr, char *buf)
343{
344 struct Scsi_Host *host = class_to_shost(dev);
345 struct AdapterControlBlock *acb =
346 (struct AdapterControlBlock *) host->hostdata;
347
348 return snprintf(buf, PAGE_SIZE,
349 "%4d\n",
350 acb->firm_numbers_queue);
351}
352
353static ssize_t
354arcmsr_attr_host_fw_sdram_size(struct device *dev,
355 struct device_attribute *attr, char *buf)
356{
357 struct Scsi_Host *host = class_to_shost(dev);
358 struct AdapterControlBlock *acb =
359 (struct AdapterControlBlock *) host->hostdata;
360
361 return snprintf(buf, PAGE_SIZE,
362 "%4d\n",
363 acb->firm_sdram_size);
364}
365
366static ssize_t
367arcmsr_attr_host_fw_hd_channels(struct device *dev,
368 struct device_attribute *attr, char *buf)
369{
370 struct Scsi_Host *host = class_to_shost(dev);
371 struct AdapterControlBlock *acb =
372 (struct AdapterControlBlock *) host->hostdata;
373
374 return snprintf(buf, PAGE_SIZE,
375 "%4d\n",
376 acb->firm_hd_channels);
377}
378
379static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
380static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
381static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
382static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
383static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
384static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
385static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
386static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
387static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
388static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
389
390static struct attribute *arcmsr_host_attrs[] = {
391 &dev_attr_host_driver_version.attr,
392 &dev_attr_host_driver_posted_cmd.attr,
393 &dev_attr_host_driver_reset.attr,
394 &dev_attr_host_driver_abort.attr,
395 &dev_attr_host_fw_model.attr,
396 &dev_attr_host_fw_version.attr,
397 &dev_attr_host_fw_request_len.attr,
398 &dev_attr_host_fw_numbers_queue.attr,
399 &dev_attr_host_fw_sdram_size.attr,
400 &dev_attr_host_fw_hd_channels.attr,
401 NULL,
402};
403
404static const struct attribute_group arcmsr_host_attr_group = {
405 .attrs = arcmsr_host_attrs,
406};
407
408const struct attribute_group *arcmsr_host_groups[] = {
409 &arcmsr_host_attr_group,
410 NULL
411};
412
