/* * Copyright (C) 2006 Red Hat * * 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/ide.h> #include <linux/init.h> #define DRV_NAME "jmicron" typedef enum { PORT_PATA0 = 0, PORT_PATA1 = 1, PORT_SATA = 2, } port_type; /** * jmicron_cable_detect - cable detection * @hwif: IDE port * * Returns the cable type. */ static u8 jmicron_cable_detect(ide_hwif_t *hwif) { struct pci_dev *pdev = to_pci_dev(hwif->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_hwif_t *hwif, ide_drive_t *drive) { } /** * jmicron_set_dma_mode - set host controller for DMA mode * @hwif: port * @drive: drive * * As the JMicron snoops for timings we don't need to do anything here. */ static void jmicron_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) { } static const struct ide_port_ops jmicron_port_ops = { .set_pio_mode = jmicron_set_pio_mode, .set_dma_mode = jmicron_set_dma_mode, .cable_detect = jmicron_cable_detect, }; static const struct ide_port_info jmicron_chipset __devinitdata = { .name = DRV_NAME, .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, .port_ops = &jmicron_port_ops, .pio_mask = ATA_PIO5, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA6, }; /** * 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) { return ide_pci_init_one(dev, &jmicron_chipset, NULL); } /* 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 jmicron_pci_driver = { .name = "JMicron IDE", .id_table = jmicron_pci_tbl, .probe = jmicron_init_one, .remove = ide_pci_remove, .suspend = ide_pci_suspend, .resume = ide_pci_resume, }; static int __init jmicron_ide_init(void) { return ide_pci_register_driver(&jmicron_pci_driver); } static void __exit jmicron_ide_exit(void) { pci_unregister_driver(&jmicron_pci_driver); } module_init(jmicron_ide_init); module_exit(jmicron_ide_exit); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); MODULE_LICENSE("GPL");