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 if (dev->card_unstable)
393 return !(r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_BUSY);
403 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
405 if (dev->card_unstable)
412 dev->ctlreg |= R852_CTL_ECC_ENABLE;
415 r852_write_reg(dev, R852_CTL,
416 dev->ctlreg | R852_CTL_ECC_ACCESS);
418 r852_read_reg_dword(dev, R852_DATALINE);
419 r852_write_reg(dev, R852_CTL, dev->ctlreg);
424 dev->ctlreg &= ~R852_CTL_ECC_ENABLE;
425 r852_write_reg(dev, R852_CTL, dev->ctlreg);
436 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
440 if (dev->card_unstable)
443 dev->ctlreg &= ~R852_CTL_ECC_ENABLE;
444 r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS);
446 ecc1 = r852_read_reg_dword(dev, R852_DATALINE);
447 ecc2 = r852_read_reg_dword(dev, R852_DATALINE);
457 r852_write_reg(dev, R852_CTL, dev->ctlreg);
472 struct r852_device *dev = r852_get_dev(nand_to_mtd(chip));
474 if (dev->card_unstable)
477 if (dev->dma_error) {
478 dev->dma_error = 0;
482 r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS);
483 ecc_reg = r852_read_reg_dword(dev, R852_DATALINE);
484 r852_write_reg(dev, R852_CTL, dev->ctlreg);
532 static void r852_engine_enable(struct r852_device *dev)
534 if (r852_read_reg_dword(dev, R852_HW) & R852_HW_UNKNOWN) {
535 r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON);
536 r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED);
538 r852_write_reg_dword(dev, R852_HW, R852_HW_ENABLED);
539 r852_write_reg(dev, R852_CTL, R852_CTL_RESET | R852_CTL_ON);
542 r852_write_reg(dev, R852_CTL, 0);
550 static void r852_engine_disable(struct r852_device *dev)
552 r852_write_reg_dword(dev, R852_HW, 0);
553 r852_write_reg(dev, R852_CTL, R852_CTL_RESET);
560 static void r852_card_update_present(struct r852_device *dev)
565 spin_lock_irqsave(&dev->irqlock, flags);
566 reg = r852_read_reg(dev, R852_CARD_STA);
567 dev->card_detected = !!(reg & R852_CARD_STA_PRESENT);
568 spin_unlock_irqrestore(&dev->irqlock, flags);
575 static void r852_update_card_detect(struct r852_device *dev)
577 int card_detect_reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE);
578 dev->card_unstable = 0;
583 card_detect_reg |= dev->card_detected ?
586 r852_write_reg(dev, R852_CARD_IRQ_ENABLE, card_detect_reg);
592 struct mtd_info *mtd = container_of(sys_dev, struct mtd_info, dev);
593 struct r852_device *dev = r852_get_dev(mtd);
594 char *data = dev->sm ? "smartmedia" : "xd";
603 static void r852_update_media_status(struct r852_device *dev)
609 spin_lock_irqsave(&dev->irqlock, flags);
610 if (!dev->card_detected) {
612 spin_unlock_irqrestore(&dev->irqlock, flags);
616 readonly = r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_RO;
617 reg = r852_read_reg(dev, R852_DMA_CAP);
618 dev->sm = (reg & (R852_DMA1 | R852_DMA2)) && (reg & R852_SMBIT);
621 dev->sm ? "SmartMedia" : "xD",
624 dev->readonly = readonly;
625 spin_unlock_irqrestore(&dev->irqlock, flags);
632 static int r852_register_nand_device(struct r852_device *dev)
634 struct mtd_info *mtd = nand_to_mtd(dev->chip);
636 WARN_ON(dev->card_registered);
638 mtd->dev.parent = &dev->pci_dev->dev;
640 if (dev->readonly)
641 dev->chip->options |= NAND_ROM;
643 r852_engine_enable(dev);
645 if (sm_register_device(mtd, dev->sm))
648 if (device_create_file(&mtd->dev, &dev_attr_media_type)) {
653 dev->card_registered = 1;
656 WARN_ON(mtd_device_unregister(nand_to_mtd(dev->chip)));
657 nand_cleanup(dev->chip);
660 dev->card_detected = 0;
668 static void r852_unregister_nand_device(struct r852_device *dev)
670 struct mtd_info *mtd = nand_to_mtd(dev->chip);
672 if (!dev->card_registered)
675 device_remove_file(&mtd->dev, &dev_attr_media_type);
677 nand_cleanup(dev->chip);
678 r852_engine_disable(dev);
679 dev->card_registered = 0;
685 struct r852_device *dev =
688 r852_card_update_present(dev);
689 r852_update_card_detect(dev);
690 dev->card_unstable = 0;
693 if (dev->card_detected == dev->card_registered)
697 r852_update_media_status(dev);
700 if (dev->card_detected)
701 r852_register_nand_device(dev);
703 r852_unregister_nand_device(dev);
705 r852_update_card_detect(dev);
709 static void r852_disable_irqs(struct r852_device *dev)
712 reg = r852_read_reg(dev, R852_CARD_IRQ_ENABLE);
713 r852_write_reg(dev, R852_CARD_IRQ_ENABLE, reg & ~R852_CARD_IRQ_MASK);
715 reg = r852_read_reg_dword(dev, R852_DMA_IRQ_ENABLE);
716 r852_write_reg_dword(dev, R852_DMA_IRQ_ENABLE,
719 r852_write_reg(dev, R852_CARD_IRQ_STA, R852_CARD_IRQ_MASK);
720 r852_write_reg_dword(dev, R852_DMA_IRQ_STA, R852_DMA_IRQ_MASK);
726 struct r852_device *dev = (struct r852_device *)data;
731 spin_lock(&dev->irqlock);
734 card_status = r852_read_reg(dev, R852_CARD_IRQ_STA);
735 r852_write_reg(dev, R852_CARD_IRQ_STA, card_status);
740 dev->card_detected = !!(card_status & R852_CARD_IRQ_INSERT);
744 WARN_ON(dev->card_unstable);
748 r852_disable_irqs(dev);
750 if (dev->card_unstable)
754 dev->card_unstable = 1;
755 queue_delayed_work(dev->card_workqueue,
756 &dev->card_detect_work, msecs_to_jiffies(100));
762 dma_status = r852_read_reg_dword(dev, R852_DMA_IRQ_STA);
763 r852_write_reg_dword(dev, R852_DMA_IRQ_STA, dma_status);
771 r852_dma_done(dev, -EIO);
772 complete(&dev->dma_done);
777 WARN_ON_ONCE(dev->dma_stage == 0);
779 if (dev->dma_stage == 0)
783 if (dev->dma_state == DMA_INTERNAL &&
786 dev->dma_state = DMA_MEMORY;
787 dev->dma_stage++;
791 if (dev->dma_state == DMA_MEMORY &&
793 dev->dma_state = DMA_INTERNAL;
794 dev->dma_stage++;
798 if (dev->dma_stage == 2)
799 r852_dma_enable(dev);
802 if (dev->dma_stage == 3) {
803 r852_dma_done(dev, 0);
804 complete(&dev->dma_done);
817 spin_unlock(&dev->irqlock);
848 struct r852_device *dev;
858 error = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
886 dev = kzalloc(sizeof(struct r852_device), GFP_KERNEL);
888 if (!dev)
891 nand_set_controller_data(chip, dev);
892 dev->chip = chip;
893 dev->pci_dev = pci_dev;
894 pci_set_drvdata(pci_dev, dev);
896 nand_controller_init(&dev->controller);
897 dev->controller.ops = &r852_ops;
898 chip->controller = &dev->controller;
900 dev->bounce_buffer = dma_alloc_coherent(&pci_dev->dev, R852_DMA_LEN,
901 &dev->phys_bounce_buffer, GFP_KERNEL);
903 if (!dev->bounce_buffer)
908 dev->mmio = pci_ioremap_bar(pci_dev, 0);
910 if (!dev->mmio)
914 dev->tmp_buffer = kzalloc(SM_SECTOR_SIZE, GFP_KERNEL);
916 if (!dev->tmp_buffer)
919 init_completion(&dev->dma_done);
921 dev->card_workqueue = create_freezable_workqueue(DRV_NAME);
923 if (!dev->card_workqueue)
926 INIT_DELAYED_WORK(&dev->card_detect_work, r852_card_detect_work);
929 r852_engine_disable(dev);
930 r852_disable_irqs(dev);
932 r852_dma_test(dev);
934 dev->irq = pci_dev->irq;
935 spin_lock_init(&dev->irqlock);
937 dev->card_detected = 0;
938 r852_card_update_present(dev);
943 DRV_NAME, dev))
947 queue_delayed_work(dev->card_workqueue,
948 &dev->card_detect_work, 0);
955 destroy_workqueue(dev->card_workqueue);
957 kfree(dev->tmp_buffer);
959 pci_iounmap(pci_dev, dev->mmio);
961 dma_free_coherent(&pci_dev->dev, R852_DMA_LEN, dev->bounce_buffer,
962 dev->phys_bounce_buffer);
964 kfree(dev);
978 struct r852_device *dev = pci_get_drvdata(pci_dev);
982 cancel_delayed_work_sync(&dev->card_detect_work);
983 destroy_workqueue(dev->card_workqueue);
986 r852_unregister_nand_device(dev);
989 r852_disable_irqs(dev);
990 free_irq(dev->irq, dev);
993 kfree(dev->tmp_buffer);
994 pci_iounmap(pci_dev, dev->mmio);
995 dma_free_coherent(&pci_dev->dev, R852_DMA_LEN, dev->bounce_buffer,
996 dev->phys_bounce_buffer);
998 kfree(dev->chip);
999 kfree(dev);
1008 struct r852_device *dev = pci_get_drvdata(pci_dev);
1010 cancel_delayed_work_sync(&dev->card_detect_work);
1011 r852_disable_irqs(dev);
1012 synchronize_irq(dev->irq);
1019 struct r852_device *dev = dev_get_drvdata(device);
1021 if (dev->ctlreg & R852_CTL_CARDENABLE)
1025 cancel_delayed_work_sync(&dev->card_detect_work);
1028 r852_disable_irqs(dev);
1029 r852_engine_disable(dev);
1034 dev->card_unstable = 0;
1040 struct r852_device *dev = dev_get_drvdata(device);
1042 r852_disable_irqs(dev);
1043 r852_card_update_present(dev);
1044 r852_engine_disable(dev);
1048 if (dev->card_detected != dev->card_registered) {
1050 dev->card_detected ? "added" : "removed");
1052 queue_delayed_work(dev->card_workqueue,
1053 &dev->card_detect_work, msecs_to_jiffies(1000));
1058 if (dev->card_registered) {
1059 r852_engine_enable(dev);
1060 nand_select_target(dev->chip, 0);
1061 nand_reset_op(dev->chip);
1062 nand_deselect_target(dev->chip);
1066 r852_update_card_detect(dev);