blob: 74c2c4a6d909703b6c9cf7a605967f60cfda0149 [file] [log] [blame]
Alan Coxbbb3bbd2006-10-03 01:14:12 -07001
2/*
Alan Coxccd32e22008-11-02 21:40:08 +01003 * Copyright (C) 2006 Red Hat
Alan Coxbbb3bbd2006-10-03 01:14:12 -07004 *
5 * May be copied or modified under the terms of the GNU General Public License
6 */
7
Alan Coxbbb3bbd2006-10-03 01:14:12 -07008#include <linux/types.h>
9#include <linux/module.h>
10#include <linux/pci.h>
Alan Coxbbb3bbd2006-10-03 01:14:12 -070011#include <linux/ide.h>
12#include <linux/init.h>
13
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +020014#define DRV_NAME "jmicron"
15
Alan Coxbbb3bbd2006-10-03 01:14:12 -070016typedef enum {
17 PORT_PATA0 = 0,
18 PORT_PATA1 = 1,
19 PORT_SATA = 2,
20} port_type;
21
22/**
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +020023 * jmicron_cable_detect - cable detection
Alan Coxbbb3bbd2006-10-03 01:14:12 -070024 * @hwif: IDE port
25 *
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +020026 * Returns the cable type.
Alan Coxbbb3bbd2006-10-03 01:14:12 -070027 */
28
Bartlomiej Zolnierkiewiczf454cbe2008-08-05 18:17:04 +020029static u8 jmicron_cable_detect(ide_hwif_t *hwif)
Alan Coxbbb3bbd2006-10-03 01:14:12 -070030{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +010031 struct pci_dev *pdev = to_pci_dev(hwif->dev);
Alan Coxbbb3bbd2006-10-03 01:14:12 -070032
33 u32 control;
34 u32 control5;
35
36 int port = hwif->channel;
37 port_type port_map[2];
38
39 pci_read_config_dword(pdev, 0x40, &control);
40
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
43 SATA port mapped */
44 if (control & (1 << 23)) {
45 port_map[0] = PORT_SATA;
46 port_map[1] = PORT_PATA0;
47 } else {
48 port_map[0] = PORT_SATA;
49 port_map[1] = PORT_SATA;
50 }
51
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;
57
58 /* The two ports may then be logically swapped by the firmware */
59 if (control & (1 << 22))
60 port = port ^ 1;
61
62 /*
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.
66 */
Paolo Ciarrocchi740694f2008-04-26 17:36:40 +020067 switch (port_map[port]) {
Alan Coxbbb3bbd2006-10-03 01:14:12 -070068 case PORT_PATA0:
69 if (control & (1 << 3)) /* 40/80 pin primary */
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +020070 return ATA_CBL_PATA40;
71 return ATA_CBL_PATA80;
Alan Coxbbb3bbd2006-10-03 01:14:12 -070072 case PORT_PATA1:
73 if (control5 & (1 << 19)) /* 40/80 pin secondary */
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +020074 return ATA_CBL_PATA40;
75 return ATA_CBL_PATA80;
Alan Coxbbb3bbd2006-10-03 01:14:12 -070076 case PORT_SATA:
Andrew Mortona51545a2007-01-27 13:46:21 +010077 break;
Alan Coxbbb3bbd2006-10-03 01:14:12 -070078 }
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +020079 /* Avoid bogus "control reaches end of non-void function" */
80 return ATA_CBL_PATA80;
Alan Coxbbb3bbd2006-10-03 01:14:12 -070081}
82
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -080083static void jmicron_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Alan Coxbbb3bbd2006-10-03 01:14:12 -070084{
Alan Coxbbb3bbd2006-10-03 01:14:12 -070085}
86
87/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020088 * jmicron_set_dma_mode - set host controller for DMA mode
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080089 * @hwif: port
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020090 * @drive: drive
Alan Coxbbb3bbd2006-10-03 01:14:12 -070091 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020092 * As the JMicron snoops for timings we don't need to do anything here.
Alan Coxbbb3bbd2006-10-03 01:14:12 -070093 */
94
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080095static void jmicron_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Alan Coxbbb3bbd2006-10-03 01:14:12 -070096{
Alan Coxbbb3bbd2006-10-03 01:14:12 -070097}
98
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +020099static 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,
103};
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700104
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200105static const struct ide_port_info jmicron_chipset __devinitdata = {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200106 .name = DRV_NAME,
Tejun Heobda79702007-10-11 23:53:59 +0200107 .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200108 .port_ops = &jmicron_port_ops,
Tejun Heobda79702007-10-11 23:53:59 +0200109 .pio_mask = ATA_PIO5,
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200110 .mwdma_mask = ATA_MWDMA2,
111 .udma_mask = ATA_UDMA6,
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700112};
113
114/**
115 * jmicron_init_one - pci layer discovery entry
116 * @dev: PCI device
117 * @id: ident table entry
118 *
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.
121 */
122
123static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
124{
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200125 return ide_pci_init_one(dev, &jmicron_chipset, NULL);
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700126}
127
Tejun Heobda79702007-10-11 23:53:59 +0200128/* 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
131 * properly.
132 *
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.
Tejun Heoebbc2032007-03-17 21:57:25 +0100136 */
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700137static struct pci_device_id jmicron_pci_tbl[] = {
Tejun Heobda79702007-10-11 23:53:59 +0200138#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) },
144#endif
145 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
146 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700147 { 0, },
148};
149
150MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
151
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200152static struct pci_driver jmicron_pci_driver = {
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700153 .name = "JMicron IDE",
154 .id_table = jmicron_pci_tbl,
155 .probe = jmicron_init_one,
Bartlomiej Zolnierkiewicz1bcaaba2008-07-24 22:53:22 +0200156 .remove = ide_pci_remove,
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200157 .suspend = ide_pci_suspend,
158 .resume = ide_pci_resume,
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700159};
160
161static int __init jmicron_ide_init(void)
162{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200163 return ide_pci_register_driver(&jmicron_pci_driver);
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700164}
165
Bartlomiej Zolnierkiewicz1bcaaba2008-07-24 22:53:22 +0200166static void __exit jmicron_ide_exit(void)
167{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200168 pci_unregister_driver(&jmicron_pci_driver);
Bartlomiej Zolnierkiewicz1bcaaba2008-07-24 22:53:22 +0200169}
170
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700171module_init(jmicron_ide_init);
Bartlomiej Zolnierkiewicz1bcaaba2008-07-24 22:53:22 +0200172module_exit(jmicron_ide_exit);
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700173
174MODULE_AUTHOR("Alan Cox");
175MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
176MODULE_LICENSE("GPL");