/* * 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_tuneproc(ide_drive_t *drive, u8 pio) { pio = ide_get_best_pio_mode(drive, pio, 5); ide_config_drive_speed(drive, XFER_PIO_0 + pio); } /** * jmicron_tune_chipset - set controller timings * @drive: Drive to set up * @xferspeed: speed we want to achieve * * As the JMicron snoops for timings all we actually need to do is * make sure we don't set an invalid mode. We do need to honour * the cable detect here. */ static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed) { u8 speed = ide_rate_filter(drive, xferspeed); 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; jmicron_tuneproc(drive, 255); 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->tuneproc = &jmicron_tuneproc; 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; } #define DECLARE_JMB_DEV(name_str) \ { \ .name = name_str, \ .init_hwif = init_hwif_jmicron, \ .autodma = AUTODMA, \ .bootable = ON_BOARD, \ .enablebits = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \ .pio_mask = ATA_PIO5, \ } static ide_pci_device_t jmicron_chipsets[] __devinitdata = { /* 0 */ DECLARE_JMB_DEV("JMB361"), /* 1 */ DECLARE_JMB_DEV("JMB363"), /* 2 */ DECLARE_JMB_DEV("JMB365"), /* 3 */ DECLARE_JMB_DEV("JMB366"), /* 4 */ DECLARE_JMB_DEV("JMB368"), }; /** * 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_chipsets[id->driver_data]); return 0; } /* If libata is configured, jmicron PCI quirk will configure it such * that the SATA ports are in AHCI function while the PATA ports are * in a separate IDE function. In such cases, match device class and * attach only to IDE. If libata isn't configured, keep the old * behavior for backward compatibility. */ #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) #define JMB_CLASS PCI_CLASS_STORAGE_IDE << 8 #define JMB_CLASS_MASK 0xffff00 #else #define JMB_CLASS 0 #define JMB_CLASS_MASK 0 #endif static struct pci_device_id jmicron_pci_tbl[] = { { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0}, { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1}, { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2}, { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3}, { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4}, { 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");