3 * Copyright (C) 2006 Red Hat
5 * May be copied or modified under the terms of the GNU General Public License
8 #include <linux/types.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
11 #include <linux/ide.h>
12 #include <linux/init.h>
14 #define DRV_NAME "jmicron"
23 * jmicron_cable_detect - cable detection
26 * Returns the cable type.
29 static u8 jmicron_cable_detect(ide_hwif_t *hwif)
31 struct pci_dev *pdev = to_pci_dev(hwif->dev);
36 int port = hwif->channel;
37 port_type port_map[2];
39 pci_read_config_dword(pdev, 0x40, &control);
41 /* There are two basic mappings. One has the two SATA ports merged
42 as master/slave and the secondary as PATA, the other has only the
44 if (control & (1 << 23)) {
45 port_map[0] = PORT_SATA;
46 port_map[1] = PORT_PATA0;
48 port_map[0] = PORT_SATA;
49 port_map[1] = PORT_SATA;
52 /* The 365/366 may have this bit set to map the second PATA port
53 as the internal primary channel */
54 pci_read_config_dword(pdev, 0x80, &control5);
55 if (control5 & (1<<24))
56 port_map[0] = PORT_PATA1;
58 /* The two ports may then be logically swapped by the firmware */
59 if (control & (1 << 22))
63 * Now we know which physical port we are talking about we can
64 * actually do our cable checking etc. Thankfully we don't need
65 * to do the plumbing for other cases.
67 switch (port_map[port]) {
69 if (control & (1 << 3)) /* 40/80 pin primary */
70 return ATA_CBL_PATA40;
71 return ATA_CBL_PATA80;
73 if (control5 & (1 << 19)) /* 40/80 pin secondary */
74 return ATA_CBL_PATA40;
75 return ATA_CBL_PATA80;
79 /* Avoid bogus "control reaches end of non-void function" */
80 return ATA_CBL_PATA80;
83 static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
88 * jmicron_set_dma_mode - set host controller for DMA mode
92 * As the JMicron snoops for timings we don't need to do anything here.
95 static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode)
99 static const struct ide_port_ops jmicron_port_ops = {
100 .set_pio_mode = jmicron_set_pio_mode,
101 .set_dma_mode = jmicron_set_dma_mode,
102 .cable_detect = jmicron_cable_detect,
105 static const struct ide_port_info jmicron_chipset __devinitdata = {
107 .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
108 .port_ops = &jmicron_port_ops,
109 .pio_mask = ATA_PIO5,
110 .mwdma_mask = ATA_MWDMA2,
111 .udma_mask = ATA_UDMA6,
115 * jmicron_init_one - pci layer discovery entry
117 * @id: ident table entry
119 * Called by the PCI code when it finds a Jmicron controller.
120 * We then use the IDE PCI generic helper to do most of the work.
123 static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
125 return ide_pci_init_one(dev, &jmicron_chipset, NULL);
128 /* All JMB PATA controllers have and will continue to have the same
129 * interface. Matching vendor and device class is enough for all
130 * current and future controllers if the controller is programmed
133 * If libata is configured, jmicron PCI quirk programs the controller
134 * into the correct mode. If libata isn't configured, match known
135 * device IDs too to maintain backward compatibility.
137 static struct pci_device_id jmicron_pci_tbl[] = {
138 #if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
139 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
140 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
141 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
142 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
143 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
145 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
146 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
150 MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
152 static struct pci_driver jmicron_pci_driver = {
153 .name = "JMicron IDE",
154 .id_table = jmicron_pci_tbl,
155 .probe = jmicron_init_one,
156 .remove = ide_pci_remove,
157 .suspend = ide_pci_suspend,
158 .resume = ide_pci_resume,
161 static int __init jmicron_ide_init(void)
163 return ide_pci_register_driver(&jmicron_pci_driver);
166 static void __exit jmicron_ide_exit(void)
168 pci_unregister_driver(&jmicron_pci_driver);
171 module_init(jmicron_ide_init);
172 module_exit(jmicron_ide_exit);
174 MODULE_AUTHOR("Alan Cox");
175 MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
176 MODULE_LICENSE("GPL");