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