diff options
Diffstat (limited to 'drivers/ide/ns87415.c')
| -rw-r--r-- | drivers/ide/ns87415.c | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c deleted file mode 100644 index 11a672aba6ee..000000000000 --- a/drivers/ide/ns87415.c +++ /dev/null @@ -1,350 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 1997-1998 Mark Lord <mlord@pobox.com> - * Copyright (C) 1998 Eddie C. Dost <ecd@skynet.be> - * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org> - * Copyright (C) 2004 Grant Grundler <grundler at parisc-linux.org> - * - * Inspired by an earlier effort from David S. Miller <davem@redhat.com> - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/ide.h> -#include <linux/init.h> - -#include <asm/io.h> - -#define DRV_NAME "ns87415" - -#ifdef CONFIG_SUPERIO -/* SUPERIO 87560 is a PoS chip that NatSem denies exists. - * Unfortunately, it's built-in on all Astro-based PA-RISC workstations - * which use the integrated NS87514 cell for CD-ROM support. - * i.e we have to support for CD-ROM installs. - * See drivers/parisc/superio.c for more gory details. - */ -#include <asm/superio.h> - -#define SUPERIO_IDE_MAX_RETRIES 25 - -/* Because of a defect in Super I/O, all reads of the PCI DMA status - * registers, IDE status register and the IDE select register need to be - * retried - */ -static u8 superio_ide_inb (unsigned long port) -{ - u8 tmp; - int retries = SUPERIO_IDE_MAX_RETRIES; - - /* printk(" [ reading port 0x%x with retry ] ", port); */ - - do { - tmp = inb(port); - if (tmp == 0) - udelay(50); - } while (tmp == 0 && retries-- > 0); - - return tmp; -} - -static u8 superio_read_status(ide_hwif_t *hwif) -{ - return superio_ide_inb(hwif->io_ports.status_addr); -} - -static u8 superio_dma_sff_read_status(ide_hwif_t *hwif) -{ - return superio_ide_inb(hwif->dma_base + ATA_DMA_STATUS); -} - -static void superio_tf_read(ide_drive_t *drive, struct ide_taskfile *tf, - u8 valid) -{ - struct ide_io_ports *io_ports = &drive->hwif->io_ports; - - if (valid & IDE_VALID_ERROR) - tf->error = inb(io_ports->feature_addr); - if (valid & IDE_VALID_NSECT) - tf->nsect = inb(io_ports->nsect_addr); - if (valid & IDE_VALID_LBAL) - tf->lbal = inb(io_ports->lbal_addr); - if (valid & IDE_VALID_LBAM) - tf->lbam = inb(io_ports->lbam_addr); - if (valid & IDE_VALID_LBAH) - tf->lbah = inb(io_ports->lbah_addr); - if (valid & IDE_VALID_DEVICE) - tf->device = superio_ide_inb(io_ports->device_addr); -} - -static void ns87415_dev_select(ide_drive_t *drive); - -static const struct ide_tp_ops superio_tp_ops = { - .exec_command = ide_exec_command, - .read_status = superio_read_status, - .read_altstatus = ide_read_altstatus, - .write_devctl = ide_write_devctl, - - .dev_select = ns87415_dev_select, - .tf_load = ide_tf_load, - .tf_read = superio_tf_read, - - .input_data = ide_input_data, - .output_data = ide_output_data, -}; - -static void superio_init_iops(struct hwif_s *hwif) -{ - struct pci_dev *pdev = to_pci_dev(hwif->dev); - u32 dma_stat; - u8 port = hwif->channel, tmp; - - dma_stat = (pci_resource_start(pdev, 4) & ~3) + (!port ? 2 : 0xa); - - /* Clear error/interrupt, enable dma */ - tmp = superio_ide_inb(dma_stat); - outb(tmp | 0x66, dma_stat); -} -#else -#define superio_dma_sff_read_status ide_dma_sff_read_status -#endif - -static unsigned int ns87415_count = 0, ns87415_control[MAX_HWIFS] = { 0 }; - -/* - * This routine either enables/disables (according to IDE_DFLAG_PRESENT) - * the IRQ associated with the port, - * and selects either PIO or DMA handshaking for the next I/O operation. - */ -static void ns87415_prepare_drive (ide_drive_t *drive, unsigned int use_dma) -{ - ide_hwif_t *hwif = drive->hwif; - struct pci_dev *dev = to_pci_dev(hwif->dev); - unsigned int bit, other, new, *old = (unsigned int *) hwif->select_data; - unsigned long flags; - - local_irq_save(flags); - new = *old; - - /* Adjust IRQ enable bit */ - bit = 1 << (8 + hwif->channel); - - if (drive->dev_flags & IDE_DFLAG_PRESENT) - new &= ~bit; - else - new |= bit; - - /* Select PIO or DMA, DMA may only be selected for one drive/channel. */ - bit = 1 << (20 + (drive->dn & 1) + (hwif->channel << 1)); - other = 1 << (20 + (1 - (drive->dn & 1)) + (hwif->channel << 1)); - new = use_dma ? ((new & ~other) | bit) : (new & ~bit); - - if (new != *old) { - unsigned char stat; - - /* - * Don't change DMA engine settings while Write Buffers - * are busy. - */ - (void) pci_read_config_byte(dev, 0x43, &stat); - while (stat & 0x03) { - udelay(1); - (void) pci_read_config_byte(dev, 0x43, &stat); - } - - *old = new; - (void) pci_write_config_dword(dev, 0x40, new); - - /* - * And let things settle... - */ - udelay(10); - } - - local_irq_restore(flags); -} - -static void ns87415_dev_select(ide_drive_t *drive) -{ - ns87415_prepare_drive(drive, - !!(drive->dev_flags & IDE_DFLAG_USING_DMA)); - - outb(drive->select | ATA_DEVICE_OBS, drive->hwif->io_ports.device_addr); -} - -static void ns87415_dma_start(ide_drive_t *drive) -{ - ns87415_prepare_drive(drive, 1); - ide_dma_start(drive); -} - -static int ns87415_dma_end(ide_drive_t *drive) -{ - ide_hwif_t *hwif = drive->hwif; - u8 dma_stat = 0, dma_cmd = 0; - - dma_stat = hwif->dma_ops->dma_sff_read_status(hwif); - /* get DMA command mode */ - dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD); - /* stop DMA */ - outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD); - /* from ERRATA: clear the INTR & ERROR bits */ - dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD); - outb(dma_cmd | 6, hwif->dma_base + ATA_DMA_CMD); - - ns87415_prepare_drive(drive, 0); - - /* verify good DMA status */ - return (dma_stat & 7) != 4; -} - -static void init_hwif_ns87415 (ide_hwif_t *hwif) -{ - struct pci_dev *dev = to_pci_dev(hwif->dev); - unsigned int ctrl, using_inta; - u8 progif; -#ifdef __sparc_v9__ - int timeout; - u8 stat; -#endif - - /* - * We cannot probe for IRQ: both ports share common IRQ on INTA. - * Also, leave IRQ masked during drive probing, to prevent infinite - * interrupts from a potentially floating INTA.. - * - * IRQs get unmasked in dev_select() when drive is first used. - */ - (void) pci_read_config_dword(dev, 0x40, &ctrl); - (void) pci_read_config_byte(dev, 0x09, &progif); - /* is irq in "native" mode? */ - using_inta = progif & (1 << (hwif->channel << 1)); - if (!using_inta) - using_inta = ctrl & (1 << (4 + hwif->channel)); - if (hwif->mate) { - hwif->select_data = hwif->mate->select_data; - } else { - hwif->select_data = (unsigned long) - &ns87415_control[ns87415_count++]; - ctrl |= (1 << 8) | (1 << 9); /* mask both IRQs */ - if (using_inta) - ctrl &= ~(1 << 6); /* unmask INTA */ - *((unsigned int *)hwif->select_data) = ctrl; - (void) pci_write_config_dword(dev, 0x40, ctrl); - - /* - * Set prefetch size to 512 bytes for both ports, - * but don't turn on/off prefetching here. - */ - pci_write_config_byte(dev, 0x55, 0xee); - -#ifdef __sparc_v9__ - /* - * XXX: Reset the device, if we don't it will not respond to - * dev_select() properly during first ide_probe_port(). - */ - timeout = 10000; - outb(12, hwif->io_ports.ctl_addr); - udelay(10); - outb(8, hwif->io_ports.ctl_addr); - do { - udelay(50); - stat = hwif->tp_ops->read_status(hwif); - if (stat == 0xff) - break; - } while ((stat & ATA_BUSY) && --timeout); -#endif - } - - if (!using_inta) - hwif->irq = pci_get_legacy_ide_irq(dev, hwif->channel); - - if (!hwif->dma_base) - return; - - outb(0x60, hwif->dma_base + ATA_DMA_STATUS); -} - -static const struct ide_tp_ops ns87415_tp_ops = { - .exec_command = ide_exec_command, - .read_status = ide_read_status, - .read_altstatus = ide_read_altstatus, - .write_devctl = ide_write_devctl, - - .dev_select = ns87415_dev_select, - .tf_load = ide_tf_load, - .tf_read = ide_tf_read, - - .input_data = ide_input_data, - .output_data = ide_output_data, -}; - -static const struct ide_dma_ops ns87415_dma_ops = { - .dma_host_set = ide_dma_host_set, - .dma_setup = ide_dma_setup, - .dma_start = ns87415_dma_start, - .dma_end = ns87415_dma_end, - .dma_test_irq = ide_dma_test_irq, - .dma_lost_irq = ide_dma_lost_irq, - .dma_timer_expiry = ide_dma_sff_timer_expiry, - .dma_sff_read_status = superio_dma_sff_read_status, -}; - -static const struct ide_port_info ns87415_chipset = { - .name = DRV_NAME, - .init_hwif = init_hwif_ns87415, - .tp_ops = &ns87415_tp_ops, - .dma_ops = &ns87415_dma_ops, - .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA | - IDE_HFLAG_NO_ATAPI_DMA, -}; - -static int ns87415_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - struct ide_port_info d = ns87415_chipset; - -#ifdef CONFIG_SUPERIO - if (PCI_SLOT(dev->devfn) == 0xE) { - /* Built-in - assume it's under superio. */ - d.init_iops = superio_init_iops; - d.tp_ops = &superio_tp_ops; - } -#endif - return ide_pci_init_one(dev, &d, NULL); -} - -static const struct pci_device_id ns87415_pci_tbl[] = { - { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_87415), 0 }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, ns87415_pci_tbl); - -static struct pci_driver ns87415_pci_driver = { - .name = "NS87415_IDE", - .id_table = ns87415_pci_tbl, - .probe = ns87415_init_one, - .remove = ide_pci_remove, - .suspend = ide_pci_suspend, - .resume = ide_pci_resume, -}; - -static int __init ns87415_ide_init(void) -{ - return ide_pci_register_driver(&ns87415_pci_driver); -} - -static void __exit ns87415_ide_exit(void) -{ - pci_unregister_driver(&ns87415_pci_driver); -} - -module_init(ns87415_ide_init); -module_exit(ns87415_ide_exit); - -MODULE_AUTHOR("Mark Lord, Eddie Dost, Andre Hedrick"); -MODULE_DESCRIPTION("PCI driver module for NS87415 IDE"); -MODULE_LICENSE("GPL"); |