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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
54#include <scsi/scsi_cmnd.h>
55#include <scsi/scsi_device.h>
56#include <scsi/scsi_host.h>
57#include <scsi/scsi_transport.h>
58#include "arcmsr.h"
59
60struct class_device_attribute *arcmsr_host_attrs[];
61
62static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj,
63 struct bin_attribute *bin,
64 char *buf, loff_t off,
65 size_t count)
66{
67 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
68 struct Scsi_Host *host = class_to_shost(cdev);
69 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
70 uint8_t *pQbuffer,*ptmpQbuffer;
71 int32_t allxfer_len = 0;
72
73 if (!capable(CAP_SYS_ADMIN))
74 return -EACCES;
75
76
77 ptmpQbuffer = (uint8_t *)buf;
78 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
79 && (allxfer_len < 1031)) {
80 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
81 memcpy(ptmpQbuffer, pQbuffer, 1);
82 acb->rqbuf_firstindex++;
83 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
84 ptmpQbuffer++;
85 allxfer_len++;
86 }
87 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
88 struct QBUFFER __iomem *prbuffer;
89 uint8_t __iomem *iop_data;
90 int32_t iop_len;
91
92 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
93 prbuffer = arcmsr_get_iop_rqbuffer(acb);
94 iop_data = prbuffer->data;
95 iop_len = readl(&prbuffer->data_len);
96 while (iop_len > 0) {
97 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
98 acb->rqbuf_lastindex++;
99 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
100 iop_data++;
101 iop_len--;
102 }
103 arcmsr_iop_message_read(acb);
104 }
105 return (allxfer_len);
106}
107
108static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj,
109 struct bin_attribute *bin,
110 char *buf, loff_t off,
111 size_t count)
112{
113 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
114 struct Scsi_Host *host = class_to_shost(cdev);
115 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
116 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
117 uint8_t *pQbuffer, *ptmpuserbuffer;
118
119 if (!capable(CAP_SYS_ADMIN))
120 return -EACCES;
121 if (count > 1032)
122 return -EINVAL;
123
124 ptmpuserbuffer = (uint8_t *)buf;
125 user_len = (int32_t)count;
126 wqbuf_lastindex = acb->wqbuf_lastindex;
127 wqbuf_firstindex = acb->wqbuf_firstindex;
128 if (wqbuf_lastindex != wqbuf_firstindex) {
129 arcmsr_post_ioctldata2iop(acb);
130 return 0;
131 } else {
132 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
133 &(ARCMSR_MAX_QBUFFER - 1);
134 if (my_empty_len >= user_len) {
135 while (user_len > 0) {
136 pQbuffer =
137 &acb->wqbuffer[acb->wqbuf_lastindex];
138 memcpy(pQbuffer, ptmpuserbuffer, 1);
139 acb->wqbuf_lastindex++;
140 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
141 ptmpuserbuffer++;
142 user_len--;
143 }
144 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
145 acb->acb_flags &=
146 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
147 arcmsr_post_ioctldata2iop(acb);
148 }
149 return count;
150 } else {
151 return 0;
152 }
153 }
154}
155
156static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
157 struct bin_attribute *bin,
158 char *buf, loff_t off,
159 size_t count)
160{
161 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
162 struct Scsi_Host *host = class_to_shost(cdev);
163 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
164 uint8_t *pQbuffer;
165
166 if (!capable(CAP_SYS_ADMIN))
167 return -EACCES;
168
169 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
170 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
171 arcmsr_iop_message_read(acb);
172 }
173 acb->acb_flags |=
174 (ACB_F_MESSAGE_WQBUFFER_CLEARED
175 | ACB_F_MESSAGE_RQBUFFER_CLEARED
176 | ACB_F_MESSAGE_WQBUFFER_READED);
177 acb->rqbuf_firstindex = 0;
178 acb->rqbuf_lastindex = 0;
179 acb->wqbuf_firstindex = 0;
180 acb->wqbuf_lastindex = 0;
181 pQbuffer = acb->rqbuffer;
182 memset(pQbuffer, 0, sizeof (struct QBUFFER));
183 pQbuffer = acb->wqbuffer;
184 memset(pQbuffer, 0, sizeof (struct QBUFFER));
185 return 1;
186}
187
188static struct bin_attribute arcmsr_sysfs_message_read_attr = {
189 .attr = {
190 .name = "mu_read",
191 .mode = S_IRUSR ,
192 .owner = THIS_MODULE,
193 },
194 .size = 1032,
195 .read = arcmsr_sysfs_iop_message_read,
196};
197
198static struct bin_attribute arcmsr_sysfs_message_write_attr = {
199 .attr = {
200 .name = "mu_write",
201 .mode = S_IWUSR,
202 .owner = THIS_MODULE,
203 },
204 .size = 1032,
205 .write = arcmsr_sysfs_iop_message_write,
206};
207
208static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
209 .attr = {
210 .name = "mu_clear",
211 .mode = S_IWUSR,
212 .owner = THIS_MODULE,
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_classdev.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_classdev.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_classdev.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_classdev.kobj, &arcmsr_sysfs_message_write_attr);
241error_bin_file_message_write:
242 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
243error_bin_file_message_read:
244 return error;
245}
246
247void
248arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
249 struct Scsi_Host *host = acb->host;
250
251 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_clear_attr);
252 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
253 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
254}
255
256
257static ssize_t
258arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
259 return snprintf(buf, PAGE_SIZE,
260 "%s\n",
261 ARCMSR_DRIVER_VERSION);
262}
263
264static ssize_t
265arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
266 struct Scsi_Host *host = class_to_shost(cdev);
267 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
268 return snprintf(buf, PAGE_SIZE,
269 "%4d\n",
270 atomic_read(&acb->ccboutstandingcount));
271}
272
273static ssize_t
274arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
275 struct Scsi_Host *host = class_to_shost(cdev);
276 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
277 return snprintf(buf, PAGE_SIZE,
278 "%4d\n",
279 acb->num_resets);
280}
281
282static ssize_t
283arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
284 struct Scsi_Host *host = class_to_shost(cdev);
285 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
286 return snprintf(buf, PAGE_SIZE,
287 "%4d\n",
288 acb->num_aborts);
289}
290
291static ssize_t
292arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
293 struct Scsi_Host *host = class_to_shost(cdev);
294 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
295 return snprintf(buf, PAGE_SIZE,
296 "%s\n",
297 acb->firm_model);
298}
299
300static ssize_t
301arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
302 struct Scsi_Host *host = class_to_shost(cdev);
303 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
304
305 return snprintf(buf, PAGE_SIZE,
306 "%s\n",
307 acb->firm_version);
308}
309
310static ssize_t
311arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
312 struct Scsi_Host *host = class_to_shost(cdev);
313 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
314
315 return snprintf(buf, PAGE_SIZE,
316 "%4d\n",
317 acb->firm_request_len);
318}
319
320static ssize_t
321arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
322 struct Scsi_Host *host = class_to_shost(cdev);
323 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
324
325 return snprintf(buf, PAGE_SIZE,
326 "%4d\n",
327 acb->firm_numbers_queue);
328}
329
330static ssize_t
331arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
332 struct Scsi_Host *host = class_to_shost(cdev);
333 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
334
335 return snprintf(buf, PAGE_SIZE,
336 "%4d\n",
337 acb->firm_sdram_size);
338}
339
340static ssize_t
341arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
342 struct Scsi_Host *host = class_to_shost(cdev);
343 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
344
345 return snprintf(buf, PAGE_SIZE,
346 "%4d\n",
347 acb->firm_hd_channels);
348}
349
350static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
351static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
352static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
353static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
354static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
355static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
356static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
357static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
358static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
359static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
360
361struct class_device_attribute *arcmsr_host_attrs[] = {
362 &class_device_attr_host_driver_version,
363 &class_device_attr_host_driver_posted_cmd,
364 &class_device_attr_host_driver_reset,
365 &class_device_attr_host_driver_abort,
366 &class_device_attr_host_fw_model,
367 &class_device_attr_host_fw_version,
368 &class_device_attr_host_fw_request_len,
369 &class_device_attr_host_fw_numbers_queue,
370 &class_device_attr_host_fw_sdram_size,
371 &class_device_attr_host_fw_hd_channels,
372 NULL,
373};
374
