misc/genwqe/card_dev.c

32 static int genwqe_open_files(struct genwqe_dev *cd)
37 	spin_lock_irqsave(&cd->file_lock, flags);
38 	rc = list_empty(&cd->file_list);
39 	spin_unlock_irqrestore(&cd->file_lock, flags);
43 static void genwqe_add_file(struct genwqe_dev *cd, struct genwqe_file *cfile)
48 	spin_lock_irqsave(&cd->file_lock, flags);
49 	list_add(&cfile->list, &cd->file_list);
50 	spin_unlock_irqrestore(&cd->file_lock, flags);
53 static int genwqe_del_file(struct genwqe_dev *cd, struct genwqe_file *cfile)
57 	spin_lock_irqsave(&cd->file_lock, flags);
59 	spin_unlock_irqrestore(&cd->file_lock, flags);
158 	struct pci_dev *pci_dev = cfile->cd->pci_dev;
194 	struct genwqe_dev *cd = cfile->cd;
195 	struct pci_dev *pci_dev = cfile->cd->pci_dev;
217 			__genwqe_free_consistent(cd, dma_map->size,
223 			genwqe_user_vunmap(cd, dma_map);
232 	struct genwqe_dev *cd = cfile->cd;
246 		genwqe_user_vunmap(cd, dma_map);
253  * @cd: GenWQE device information
256  * E.g. genwqe_send_signal(cd, SIGIO);
258 static int genwqe_kill_fasync(struct genwqe_dev *cd, int sig)
264 	spin_lock_irqsave(&cd->file_lock, flags);
265 	list_for_each_entry(cfile, &cd->file_list, list) {
270 	spin_unlock_irqrestore(&cd->file_lock, flags);
274 static int genwqe_terminate(struct genwqe_dev *cd)
280 	spin_lock_irqsave(&cd->file_lock, flags);
281 	list_for_each_entry(cfile, &cd->file_list, list) {
285 	spin_unlock_irqrestore(&cd->file_lock, flags);
301 	struct genwqe_dev *cd;
308 	cd = container_of(inode->i_cdev, struct genwqe_dev, cdev_genwqe);
309 	cfile->cd = cd;
321 	genwqe_add_file(cd, cfile);
360 	struct genwqe_dev *cd = cfile->cd;
370 	 * For this to work we must not release cd when this cfile is
374 	genwqe_del_file(cd, cfile);
395 	struct genwqe_dev *cd = container_of(inode->i_cdev, struct genwqe_dev,
397 	struct pci_dev *pci_dev = cd->pci_dev;
411 	__genwqe_free_consistent(cd, dma_map->size, dma_map->k_vaddr,
440 	struct genwqe_dev *cd = cfile->cd;
457 	dma_map->k_vaddr = __genwqe_alloc_consistent(cd, vsize,
485 	__genwqe_free_consistent(cd, dma_map->size,
514 	struct genwqe_dev *cd = cfile->cd;
516 	struct pci_dev *pci_dev = cd->pci_dev;
540 	xbuf = __genwqe_alloc_consistent(cd, FLASH_BLOCK, &dma_addr);
577 		if (genwqe_get_slu_id(cd) <= 0x2) {
610 		rc = __genwqe_execute_raw_ddcb(cd, req, filp->f_flags);
635 	__genwqe_free_consistent(cd, FLASH_BLOCK, xbuf, dma_addr);
649 	struct genwqe_dev *cd = cfile->cd;
651 	struct pci_dev *pci_dev = cd->pci_dev;
676 	xbuf = __genwqe_alloc_consistent(cd, FLASH_BLOCK, &dma_addr);
703 		if (genwqe_get_slu_id(cd) <= 0x2) {
728 		rc = __genwqe_execute_raw_ddcb(cd, cmd, filp->f_flags);
765 	__genwqe_free_consistent(cd, FLASH_BLOCK, xbuf, dma_addr);
772 	struct genwqe_dev *cd = cfile->cd;
773 	struct pci_dev *pci_dev = cfile->cd->pci_dev;
791 	rc = genwqe_user_vmap(cd, dma_map, (void *)map_addr, map_size);
805 	struct genwqe_dev *cd = cfile->cd;
821 	genwqe_user_vunmap(cd, dma_map);
837 	struct genwqe_dev *cd = cfile->cd;
844 			genwqe_user_vunmap(cd, dma_map);
847 			genwqe_free_sync_sgl(cd, &req->sgls[i]);
866 	struct genwqe_dev *cd = cfile->cd;
948 				rc = genwqe_user_vmap(cd, m, (void *)u_addr,
958 			rc = genwqe_alloc_sync_sgl(cd, &req->sgls[i],
964 			genwqe_setup_sgl(cd, &req->sgls[i],
997 	struct genwqe_dev *cd = cfile->cd;
1005 	rc = __genwqe_execute_raw_ddcb(cd, cmd, filp->f_flags);
1015 	struct genwqe_dev *cd = cfile->cd;
1030 		rc = __genwqe_execute_raw_ddcb(cd, cmd, filp->f_flags);
1057 	struct genwqe_dev *cd = cfile->cd;
1058 	struct pci_dev *pci_dev = cd->pci_dev;
1073 		put_user(cd->card_state, (enum genwqe_card_state __user *)arg);
1083 		if ((reg_offs >= cd->mmio_len) || (reg_offs & 0x7))
1086 		val = __genwqe_readq(cd, reg_offs);
1103 		if ((reg_offs >= cd->mmio_len) || (reg_offs & 0x7))
1109 		__genwqe_writeq(cd, reg_offs, val);
1119 		if ((reg_offs >= cd->mmio_len) || (reg_offs & 0x3))
1122 		val = __genwqe_readl(cd, reg_offs);
1139 		if ((reg_offs >= cd->mmio_len) || (reg_offs & 0x3))
1145 		__genwqe_writel(cd, reg_offs, val);
1153 		if (!genwqe_is_privileged(cd))
1174 		if (!genwqe_is_privileged(cd))
1177 		if (genwqe_flash_readback_fails(cd))
1239 static int genwqe_device_initialized(struct genwqe_dev *cd)
1241 	return cd->dev != NULL;
1246  * @cd:      genwqe device descriptor
1252 int genwqe_device_create(struct genwqe_dev *cd)
1255 	struct pci_dev *pci_dev = cd->pci_dev;
1263 	rc = alloc_chrdev_region(&cd->devnum_genwqe, 0,
1270 	cdev_init(&cd->cdev_genwqe, &genwqe_fops);
1271 	cd->cdev_genwqe.owner = THIS_MODULE;
1273 	rc = cdev_add(&cd->cdev_genwqe, cd->devnum_genwqe, 1);
1283 	cd->dev = device_create_with_groups(cd->class_genwqe,
1284 					    &cd->pci_dev->dev,
1285 					    cd->devnum_genwqe, cd,
1288 					    cd->card_idx);
1289 	if (IS_ERR(cd->dev)) {
1290 		rc = PTR_ERR(cd->dev);
1294 	genwqe_init_debugfs(cd);
1299 	cdev_del(&cd->cdev_genwqe);
1301 	unregister_chrdev_region(cd->devnum_genwqe, GENWQE_MAX_MINOR);
1303 	cd->dev = NULL;
1307 static int genwqe_inform_and_stop_processes(struct genwqe_dev *cd)
1311 	struct pci_dev *pci_dev = cd->pci_dev;
1313 	if (!genwqe_open_files(cd))
1318 	rc = genwqe_kill_fasync(cd, SIGIO);
1322 			     genwqe_open_files(cd); i++) {
1330 		if (!genwqe_open_files(cd))
1336 		rc = genwqe_terminate(cd);
1340 				     genwqe_open_files(cd); i++) {
1353  * @cd: GenWQE device information
1361 int genwqe_device_remove(struct genwqe_dev *cd)
1364 	struct pci_dev *pci_dev = cd->pci_dev;
1366 	if (!genwqe_device_initialized(cd))
1369 	genwqe_inform_and_stop_processes(cd);
1377 	rc = kref_read(&cd->cdev_genwqe.kobj.kref);
1384 	genqwe_exit_debugfs(cd);
1385 	device_destroy(cd->class_genwqe, cd->devnum_genwqe);
1386 	cdev_del(&cd->cdev_genwqe);
1387 	unregister_chrdev_region(cd->devnum_genwqe, GENWQE_MAX_MINOR);
1388 	cd->dev = NULL;