3 * Copyright (C) 2006 Red Hat <alan@redhat.com>
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/delay.h>
12 #include <linux/hdreg.h>
13 #include <linux/ide.h>
14 #include <linux/init.h>
25 * ata66_jmicron - Cable check
28 * Returns the cable type.
31 static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
33 struct pci_dev *pdev = hwif->pci_dev;
38 int port = hwif->channel;
39 port_type port_map[2];
41 pci_read_config_dword(pdev, 0x40, &control);
43 /* There are two basic mappings. One has the two SATA ports merged
44 as master/slave and the secondary as PATA, the other has only the
46 if (control & (1 << 23)) {
47 port_map[0] = PORT_SATA;
48 port_map[1] = PORT_PATA0;
50 port_map[0] = PORT_SATA;
51 port_map[1] = PORT_SATA;
54 /* The 365/366 may have this bit set to map the second PATA port
55 as the internal primary channel */
56 pci_read_config_dword(pdev, 0x80, &control5);
57 if (control5 & (1<<24))
58 port_map[0] = PORT_PATA1;
60 /* The two ports may then be logically swapped by the firmware */
61 if (control & (1 << 22))
65 * Now we know which physical port we are talking about we can
66 * actually do our cable checking etc. Thankfully we don't need
67 * to do the plumbing for other cases.
69 switch (port_map[port])
72 if (control & (1 << 3)) /* 40/80 pin primary */
73 return ATA_CBL_PATA40;
74 return ATA_CBL_PATA80;
76 if (control5 & (1 << 19)) /* 40/80 pin secondary */
77 return ATA_CBL_PATA40;
78 return ATA_CBL_PATA80;
82 /* Avoid bogus "control reaches end of non-void function" */
83 return ATA_CBL_PATA80;
86 static void jmicron_tuneproc(ide_drive_t *drive, u8 pio)
88 pio = ide_get_best_pio_mode(drive, pio, 5);
89 ide_config_drive_speed(drive, XFER_PIO_0 + pio);
93 * jmicron_tune_chipset - set controller timings
94 * @drive: Drive to set up
95 * @speed: speed we want to achieve
97 * As the JMicron snoops for timings all we actually need to do is
98 * set the transfer mode on the device.
101 static int jmicron_tune_chipset(ide_drive_t *drive, const u8 speed)
103 return ide_config_drive_speed(drive, speed);
107 * jmicron_configure_drive_for_dma - set up for DMA transfers
108 * @drive: drive we are going to set up
110 * As the JMicron snoops for timings all we actually need to do is
111 * make sure we don't set an invalid mode.
114 static int jmicron_config_drive_for_dma (ide_drive_t *drive)
116 if (ide_tune_dma(drive))
119 jmicron_tuneproc(drive, 255);
125 * init_hwif_jmicron - set up hwif structs
126 * @hwif: interface to set up
128 * Minimal set up is required for the Jmicron hardware.
131 static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
133 hwif->speedproc = &jmicron_tune_chipset;
134 hwif->tuneproc = &jmicron_tuneproc;
136 hwif->drives[0].autotune = 1;
137 hwif->drives[1].autotune = 1;
143 hwif->ultra_mask = 0x7f;
144 hwif->mwdma_mask = 0x07;
146 hwif->ide_dma_check = &jmicron_config_drive_for_dma;
148 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
149 hwif->cbl = ata66_jmicron(hwif);
152 hwif->drives[0].autodma = hwif->autodma;
153 hwif->drives[1].autodma = hwif->autodma;
160 static ide_pci_device_t jmicron_chipset __devinitdata = {
162 .init_hwif = init_hwif_jmicron,
164 .bootable = ON_BOARD,
165 .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
166 .pio_mask = ATA_PIO5,
170 * jmicron_init_one - pci layer discovery entry
172 * @id: ident table entry
174 * Called by the PCI code when it finds a Jmicron controller.
175 * We then use the IDE PCI generic helper to do most of the work.
178 static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
180 ide_setup_pci_device(dev, &jmicron_chipset);
184 /* All JMB PATA controllers have and will continue to have the same
185 * interface. Matching vendor and device class is enough for all
186 * current and future controllers if the controller is programmed
189 * If libata is configured, jmicron PCI quirk programs the controller
190 * into the correct mode. If libata isn't configured, match known
191 * device IDs too to maintain backward compatibility.
193 static struct pci_device_id jmicron_pci_tbl[] = {
194 #if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
195 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
196 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
197 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
198 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
199 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
201 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
202 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
206 MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
208 static struct pci_driver driver = {
209 .name = "JMicron IDE",
210 .id_table = jmicron_pci_tbl,
211 .probe = jmicron_init_one,
214 static int __init jmicron_ide_init(void)
216 return ide_pci_register_driver(&driver);
219 module_init(jmicron_ide_init);
221 MODULE_AUTHOR("Alan Cox");
222 MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
223 MODULE_LICENSE("GPL");