| |
| /* |
| * Copyright (C) 2006 Red Hat <alan@redhat.com> |
| * |
| * May be copied or modified under the terms of the GNU General Public License |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/hdreg.h> |
| #include <linux/ide.h> |
| #include <linux/init.h> |
| |
| #include <asm/io.h> |
| |
| typedef enum { |
| PORT_PATA0 = 0, |
| PORT_PATA1 = 1, |
| PORT_SATA = 2, |
| } port_type; |
| |
| /** |
| * ata66_jmicron - Cable check |
| * @hwif: IDE port |
| * |
| * Returns the cable type. |
| */ |
| |
| static u8 __devinit ata66_jmicron(ide_hwif_t *hwif) |
| { |
| struct pci_dev *pdev = hwif->pci_dev; |
| |
| u32 control; |
| u32 control5; |
| |
| int port = hwif->channel; |
| port_type port_map[2]; |
| |
| pci_read_config_dword(pdev, 0x40, &control); |
| |
| /* There are two basic mappings. One has the two SATA ports merged |
| as master/slave and the secondary as PATA, the other has only the |
| SATA port mapped */ |
| if (control & (1 << 23)) { |
| port_map[0] = PORT_SATA; |
| port_map[1] = PORT_PATA0; |
| } else { |
| port_map[0] = PORT_SATA; |
| port_map[1] = PORT_SATA; |
| } |
| |
| /* The 365/366 may have this bit set to map the second PATA port |
| as the internal primary channel */ |
| pci_read_config_dword(pdev, 0x80, &control5); |
| if (control5 & (1<<24)) |
| port_map[0] = PORT_PATA1; |
| |
| /* The two ports may then be logically swapped by the firmware */ |
| if (control & (1 << 22)) |
| port = port ^ 1; |
| |
| /* |
| * Now we know which physical port we are talking about we can |
| * actually do our cable checking etc. Thankfully we don't need |
| * to do the plumbing for other cases. |
| */ |
| switch (port_map[port]) |
| { |
| case PORT_PATA0: |
| if (control & (1 << 3)) /* 40/80 pin primary */ |
| return ATA_CBL_PATA40; |
| return ATA_CBL_PATA80; |
| case PORT_PATA1: |
| if (control5 & (1 << 19)) /* 40/80 pin secondary */ |
| return ATA_CBL_PATA40; |
| return ATA_CBL_PATA80; |
| case PORT_SATA: |
| break; |
| } |
| /* Avoid bogus "control reaches end of non-void function" */ |
| return ATA_CBL_PATA80; |
| } |
| |
| static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio) |
| { |
| ide_config_drive_speed(drive, XFER_PIO_0 + pio); |
| } |
| |
| /** |
| * jmicron_tune_chipset - set controller timings |
| * @drive: Drive to set up |
| * @speed: speed we want to achieve |
| * |
| * As the JMicron snoops for timings all we actually need to do is |
| * set the transfer mode on the device. |
| */ |
| |
| static int jmicron_tune_chipset(ide_drive_t *drive, const u8 speed) |
| { |
| return ide_config_drive_speed(drive, speed); |
| } |
| |
| /** |
| * jmicron_configure_drive_for_dma - set up for DMA transfers |
| * @drive: drive we are going to set up |
| * |
| * As the JMicron snoops for timings all we actually need to do is |
| * make sure we don't set an invalid mode. |
| */ |
| |
| static int jmicron_config_drive_for_dma (ide_drive_t *drive) |
| { |
| if (ide_tune_dma(drive)) |
| return 0; |
| |
| ide_set_max_pio(drive); |
| |
| return -1; |
| } |
| |
| /** |
| * init_hwif_jmicron - set up hwif structs |
| * @hwif: interface to set up |
| * |
| * Minimal set up is required for the Jmicron hardware. |
| */ |
| |
| static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) |
| { |
| hwif->speedproc = &jmicron_tune_chipset; |
| hwif->set_pio_mode = &jmicron_set_pio_mode; |
| |
| hwif->drives[0].autotune = 1; |
| hwif->drives[1].autotune = 1; |
| |
| if (!hwif->dma_base) |
| goto fallback; |
| |
| hwif->atapi_dma = 1; |
| hwif->ultra_mask = 0x7f; |
| hwif->mwdma_mask = 0x07; |
| |
| hwif->ide_dma_check = &jmicron_config_drive_for_dma; |
| |
| if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
| hwif->cbl = ata66_jmicron(hwif); |
| |
| hwif->autodma = 1; |
| hwif->drives[0].autodma = hwif->autodma; |
| hwif->drives[1].autodma = hwif->autodma; |
| return; |
| fallback: |
| hwif->autodma = 0; |
| return; |
| } |
| |
| static ide_pci_device_t jmicron_chipset __devinitdata = { |
| .name = "JMB", |
| .init_hwif = init_hwif_jmicron, |
| .autodma = AUTODMA, |
| .bootable = ON_BOARD, |
| .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, |
| .pio_mask = ATA_PIO5, |
| }; |
| |
| /** |
| * jmicron_init_one - pci layer discovery entry |
| * @dev: PCI device |
| * @id: ident table entry |
| * |
| * Called by the PCI code when it finds a Jmicron controller. |
| * We then use the IDE PCI generic helper to do most of the work. |
| */ |
| |
| static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| { |
| ide_setup_pci_device(dev, &jmicron_chipset); |
| return 0; |
| } |
| |
| /* All JMB PATA controllers have and will continue to have the same |
| * interface. Matching vendor and device class is enough for all |
| * current and future controllers if the controller is programmed |
| * properly. |
| * |
| * If libata is configured, jmicron PCI quirk programs the controller |
| * into the correct mode. If libata isn't configured, match known |
| * device IDs too to maintain backward compatibility. |
| */ |
| static struct pci_device_id jmicron_pci_tbl[] = { |
| #if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE) |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) }, |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) }, |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) }, |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) }, |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) }, |
| #endif |
| { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
| PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 }, |
| { 0, }, |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); |
| |
| static struct pci_driver driver = { |
| .name = "JMicron IDE", |
| .id_table = jmicron_pci_tbl, |
| .probe = jmicron_init_one, |
| }; |
| |
| static int __init jmicron_ide_init(void) |
| { |
| return ide_pci_register_driver(&driver); |
| } |
| |
| module_init(jmicron_ide_init); |
| |
| MODULE_AUTHOR("Alan Cox"); |
| MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); |
| MODULE_LICENSE("GPL"); |