Lines Matching refs:dev
34 static inline uint8_t r852_read_reg(struct r852_device *dev, int address)
36 uint8_t reg = readb(dev->mmio + address);
41 static inline void r852_write_reg(struct r852_device *dev,
44 writeb(value, dev->mmio + address);
49 static inline uint32_t r852_read_reg_dword(struct r852_device *dev, int address)
51 uint32_t reg = le32_to_cpu(readl(dev->mmio + address));
56 static inline void r852_write_reg_dword(struct r852_device *dev,
59 writel(cpu_to_le32(value), dev->mmio + address);
71 static void r852_dma_test(struct r852_device *dev)
73 dev->dma_usable = (r852_read_reg(dev, R852_DMA_CAP) &
76 if (!dev->dma_usable)
81 dev->dma_usable = 0;
87 * Expects dev->dma_dir and dev->dma_state be set
89 static void r852_dma_enable(struct r852_device *dev)
94 dma_reg = r852_read_reg_dword(dev, R852_DMA_SETTINGS);
97 if (dev->dma_dir)
100 if (dev->dma_state == DMA_INTERNAL) {
104 r852_write_reg_dword(dev, R852_DMA_ADDR,
105 cpu_to_le32(dev->phys_bounce_buffer));
108 r852_write_reg_dword(dev, R852_DMA_ADDR,
109 cpu_to_le32(dev->phys_dma_addr));
113 r852_read_reg_dword(dev, R852_DMA_ADDR);
115 r852_write_reg_dword(dev, R852_DMA_SETTINGS, dma_reg);
118 dma_irq_reg = r852_read_reg_dword(dev, R852_DMA_IRQ_ENABLE);
119 r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE,
130 static void r852_dma_done(struct r852_device *dev, int error)
132 WARN_ON(dev->dma_stage == 0);
134 r852_write_reg_dword(dev, R852_DMA_IRQ_STA,
135 r852_read_reg_dword(dev, R852_DMA_IRQ_STA));
137 r852_write_reg_dword(dev, R852_DMA_SETTINGS, 0);
138 r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE, 0);
141 r852_write_reg_dword(dev, R852_DMA_ADDR,
142 cpu_to_le32(dev->phys_bounce_buffer));
143 r852_read_reg_dword(dev, R852_DMA_ADDR);
145 dev->dma_error = error;
146 dev->dma_stage = 0;
148 if (dev->phys_dma_addr && dev->phys_dma_addr != dev->phys_bounce_buffer)
149 dma_unmap_single(&dev->pci_dev->dev, dev->phys_dma_addr,
151 dev->dma_dir ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
157 static int r852_dma_wait(struct r852_device *dev)
159 long timeout = wait_for_completion_timeout(&dev->dma_done,
172 static void r852_do_dma(struct r852_device *dev, uint8_t *buf, int do_read)
178 dev->dma_error = 0;
181 dev->dma_dir = do_read;
182 dev->dma_stage = 1;
183 reinit_completion(&dev->dma_done);
189 dev->dma_state = do_read ? DMA_INTERNAL : DMA_MEMORY;
196 dev->phys_dma_addr = dma_map_single(&dev->pci_dev->dev, buf,
199 if (dma_mapping_error(&dev->pci_dev->dev, dev->phys_dma_addr))
205 dev->phys_dma_addr = dev->phys_bounce_buffer;
207 memcpy(dev->bounce_buffer, buf, R852_DMA_LEN);
211 spin_lock_irqsave(&dev->irqlock, flags);
212 r852_dma_enable(dev);
213 spin_unlock_irqrestore(&dev->irqlock, flags);
216 error = r852_dma_wait(dev);
219 r852_dma_done(dev, error);
224 memcpy((void *)buf, dev->bounce_buffer, R852_DMA_LEN);
232 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
236 if (dev->card_unstable)
240 if (len == R852_DMA_LEN && dev->dma_usable) {
241 r852_do_dma(dev, (uint8_t *)buf, 0);
248 r852_write_reg_dword(dev, R852_DATALINE, reg);
256 r852_write_reg(dev, R852_DATALINE, *buf++);
266 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
269 if (dev->card_unstable) {
277 if (len == R852_DMA_LEN && dev->dma_usable) {
278 r852_do_dma(dev, buf, 1);
285 reg = r852_read_reg_dword(dev, R852_DATALINE);
295 *buf++ = r852_read_reg(dev, R852_DATALINE);
303 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
306 if (dev->card_unstable)
309 return r852_read_reg(dev, R852_DATALINE);
317 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
319 if (dev->card_unstable)
324 dev->ctlreg &= ~(R852_CTL_DATA | R852_CTL_COMMAND |
328 dev->ctlreg |= R852_CTL_DATA;
331 dev->ctlreg |= R852_CTL_COMMAND;
334 dev->ctlreg |= (R852_CTL_CARDENABLE | R852_CTL_ON);
336 dev->ctlreg &= ~R852_CTL_WRITE;
340 dev->ctlreg |= R852_CTL_WRITE;
342 r852_write_reg(dev, R852_CTL, dev->ctlreg);
347 if (dat == NAND_CMD_SEQIN && (dev->ctlreg & R852_CTL_COMMAND)) {
348 dev->ctlreg |= R852_CTL_WRITE;
349 r852_write_reg(dev, R852_CTL, dev->ctlreg);
353 r852_write_reg(dev, R852_DATALINE, dat);
362 struct r852_device *dev = nand_get_controller_data(chip);
376 if (dev->dma_error) {
378 dev->dma_error = 0;
389 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
390 return !(r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_BUSY);
400 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
402 if (dev->card_unstable)
409 dev->ctlreg |= R852_CTL_ECC_ENABLE;
412 r852_write_reg(dev, R852_CTL,
413 dev->ctlreg | R852_CTL_ECC_ACCESS);
415 r852_read_reg_dword(dev, R852_DATALINE);
416 r852_write_reg(dev, R852_CTL, dev->ctlreg);
421 dev->ctlreg &= ~R852_CTL_ECC_ENABLE;
422 r852_write_reg(dev, R852_CTL, dev->ctlreg);
433 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
437 if (dev->card_unstable)
440 dev->ctlreg &= ~R852_CTL_ECC_ENABLE;
441 r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS);
443 ecc1 = r852_read_reg_dword(dev, R852_DATALINE);
444 ecc2 = r852_read_reg_dword(dev, R852_DATALINE);
454 r852_write_reg(dev, R852_CTL, dev->ctlreg);
469 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
471 if (dev->card_unstable)
474 if (dev->dma_error) {
475 dev->dma_error = 0;
479 r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS);
480 ecc_reg = r852_read_reg_dword(dev, R852_DATALINE);
481 r852_write_reg(dev, R852_CTL, dev->ctlreg);
529 static void r852_engine_enable(struct r852_device *dev)
531 if (r852_read_reg_dword(dev, R852_HW) & R852_HW_UNKNOWN) {
532 r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON);
533 r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED);
535 r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED);
536 r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON);
539 r852_write_reg(dev, R852_CTL, 0);
547 static void r852_engine_disable(struct r852_device *dev)
549 r852_write_reg_dword(dev, R852_HW, 0);
550 r852_write_reg(dev, R852_CTL, R852_CTL_RESET);
557 static void r852_card_update_present(struct r852_device *dev)
562 spin_lock_irqsave(&dev->irqlock, flags);
563 reg = r852_read_reg(dev, R852_CARD_STA);
564 dev->card_detected = !!(reg & R852_CARD_STA_PRESENT);
565 spin_unlock_irqrestore(&dev->irqlock, flags);
572 static void r852_update_card_detect(struct r852_device *dev)
574 int card_detect_reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE);
575 dev->card_unstable = 0;
580 card_detect_reg |= dev->card_detected ?
583 r852_write_reg(dev, R852_CARD_IRQ_ENABLE, card_detect_reg);
589 struct mtd_info *mtd = container_of(sys_dev, struct mtd_info, dev);
590 struct r852_device *dev = r852_get_dev(mtd);
591 char *data = dev->sm ? "smartmedia" : "xd";
601 static void r852_update_media_status(struct r852_device *dev)
607 spin_lock_irqsave(&dev->irqlock, flags);
608 if (!dev->card_detected) {
610 spin_unlock_irqrestore(&dev->irqlock, flags);
614 readonly = r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_RO;
615 reg = r852_read_reg(dev, R852_DMA_CAP);
616 dev->sm = (reg & (R852_DMA1 | R852_DMA2)) && (reg & R852_SMBIT);
619 dev->sm ? "SmartMedia" : "xD",
622 dev->readonly = readonly;
623 spin_unlock_irqrestore(&dev->irqlock, flags);
630 static int r852_register_nand_device(struct r852_device *dev)
632 struct mtd_info *mtd = nand_to_mtd(dev->chip);
634 WARN_ON(dev->card_registered);
636 mtd->dev.parent = &dev->pci_dev->dev;
638 if (dev->readonly)
639 dev->chip->options |= NAND_ROM;
641 r852_engine_enable(dev);
643 if (sm_register_device(mtd, dev->sm))
646 if (device_create_file(&mtd->dev, &dev_attr_media_type)) {
651 dev->card_registered = 1;
654 WARN_ON(mtd_device_unregister(nand_to_mtd(dev->chip)));
655 nand_cleanup(dev->chip);
658 dev->card_detected = 0;
666 static void r852_unregister_nand_device(struct r852_device *dev)
668 struct mtd_info *mtd = nand_to_mtd(dev->chip);
670 if (!dev->card_registered)
673 device_remove_file(&mtd->dev, &dev_attr_media_type);
675 nand_cleanup(dev->chip);
676 r852_engine_disable(dev);
677 dev->card_registered = 0;
683 struct r852_device *dev =
686 r852_card_update_present(dev);
687 r852_update_card_detect(dev);
688 dev->card_unstable = 0;
691 if (dev->card_detected == dev->card_registered)
695 r852_update_media_status(dev);
698 if (dev->card_detected)
699 r852_register_nand_device(dev);
701 r852_unregister_nand_device(dev);
703 r852_update_card_detect(dev);
707 static void r852_disable_irqs(struct r852_device *dev)
710 reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE);
711 r852_write_reg(dev, R852_CARD_IRQ_ENABLE, reg & ~R852_CARD_IRQ_MASK);
713 reg = r852_read_reg_dword(dev, R852_DMA_IRQ_ENABLE);
714 r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE,
717 r852_write_reg(dev, R852_CARD_IRQ_STA, R852_CARD_IRQ_MASK);
718 r852_write_reg_dword(dev, R852_DMA_IRQ_STA, R852_DMA_IRQ_MASK);
724 struct r852_device *dev = (struct r852_device *)data;
730 spin_lock_irqsave(&dev->irqlock, flags);
733 card_status = r852_read_reg(dev, R852_CARD_IRQ_STA);
734 r852_write_reg(dev, R852_CARD_IRQ_STA, card_status);
739 dev->card_detected = !!(card_status & R852_CARD_IRQ_INSERT);
743 WARN_ON(dev->card_unstable);
747 r852_disable_irqs(dev);
749 if (dev->card_unstable)
753 dev->card_unstable = 1;
754 queue_delayed_work(dev->card_workqueue,
755 &dev->card_detect_work, msecs_to_jiffies(100));
761 dma_status = r852_read_reg_dword(dev, R852_DMA_IRQ_STA);
762 r852_write_reg_dword(dev, R852_DMA_IRQ_STA, dma_status);
770 r852_dma_done(dev, -EIO);
771 complete(&dev->dma_done);
776 WARN_ON_ONCE(dev->dma_stage == 0);
778 if (dev->dma_stage == 0)
782 if (dev->dma_state == DMA_INTERNAL &&
785 dev->dma_state = DMA_MEMORY;
786 dev->dma_stage++;
790 if (dev->dma_state == DMA_MEMORY &&
792 dev->dma_state = DMA_INTERNAL;
793 dev->dma_stage++;
797 if (dev->dma_stage == 2)
798 r852_dma_enable(dev);
801 if (dev->dma_stage == 3) {
802 r852_dma_done(dev, 0);
803 complete(&dev->dma_done);
816 spin_unlock_irqrestore(&dev->irqlock, flags);
847 struct r852_device *dev;
857 error = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
885 dev = kzalloc(sizeof(struct r852_device), GFP_KERNEL);
887 if (!dev)
890 nand_set_controller_data(chip, dev);
891 dev->chip = chip;
892 dev->pci_dev = pci_dev;
893 pci_set_drvdata(pci_dev, dev);
895 nand_controller_init(&dev->controller);
896 dev->controller.ops = &r852_ops;
897 chip->controller = &dev->controller;
899 dev->bounce_buffer = dma_alloc_coherent(&pci_dev->dev, R852_DMA_LEN,
900 &dev->phys_bounce_buffer, GFP_KERNEL);
902 if (!dev->bounce_buffer)
907 dev->mmio = pci_ioremap_bar(pci_dev, 0);
909 if (!dev->mmio)
913 dev->tmp_buffer = kzalloc(SM_SECTOR_SIZE, GFP_KERNEL);
915 if (!dev->tmp_buffer)
918 init_completion(&dev->dma_done);
920 dev->card_workqueue = create_freezable_workqueue(DRV_NAME);
922 if (!dev->card_workqueue)
925 INIT_DELAYED_WORK(&dev->card_detect_work, r852_card_detect_work);
928 r852_engine_disable(dev);
929 r852_disable_irqs(dev);
931 r852_dma_test(dev);
933 dev->irq = pci_dev->irq;
934 spin_lock_init(&dev->irqlock);
936 dev->card_detected = 0;
937 r852_card_update_present(dev);
942 DRV_NAME, dev))
946 queue_delayed_work(dev->card_workqueue,
947 &dev->card_detect_work, 0);
954 destroy_workqueue(dev->card_workqueue);
956 kfree(dev->tmp_buffer);
958 pci_iounmap(pci_dev, dev->mmio);
960 dma_free_coherent(&pci_dev->dev, R852_DMA_LEN, dev->bounce_buffer,
961 dev->phys_bounce_buffer);
963 kfree(dev);
977 struct r852_device *dev = pci_get_drvdata(pci_dev);
981 cancel_delayed_work_sync(&dev->card_detect_work);
982 destroy_workqueue(dev->card_workqueue);
985 r852_unregister_nand_device(dev);
988 r852_disable_irqs(dev);
989 free_irq(dev->irq, dev);
992 kfree(dev->tmp_buffer);
993 pci_iounmap(pci_dev, dev->mmio);
994 dma_free_coherent(&pci_dev->dev, R852_DMA_LEN, dev->bounce_buffer,
995 dev->phys_bounce_buffer);
997 kfree(dev->chip);
998 kfree(dev);
1007 struct r852_device *dev = pci_get_drvdata(pci_dev);
1009 cancel_delayed_work_sync(&dev->card_detect_work);
1010 r852_disable_irqs(dev);
1011 synchronize_irq(dev->irq);
1018 struct r852_device *dev = dev_get_drvdata(device);
1020 if (dev->ctlreg & R852_CTL_CARDENABLE)
1024 cancel_delayed_work_sync(&dev->card_detect_work);
1027 r852_disable_irqs(dev);
1028 r852_engine_disable(dev);
1033 dev->card_unstable = 0;
1039 struct r852_device *dev = dev_get_drvdata(device);
1041 r852_disable_irqs(dev);
1042 r852_card_update_present(dev);
1043 r852_engine_disable(dev);
1047 if (dev->card_detected != dev->card_registered) {
1049 dev->card_detected ? "added" : "removed");
1051 queue_delayed_work(dev->card_workqueue,
1052 &dev->card_detect_work, msecs_to_jiffies(1000));
1057 if (dev->card_registered) {
1058 r852_engine_enable(dev);
1059 nand_select_target(dev->chip, 0);
1060 nand_reset_op(dev->chip);
1061 nand_deselect_target(dev->chip);
1065 r852_update_card_detect(dev);