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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
Sergei Shtylyov07af4272007-03-03 17:48:53 +01003 * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Sergei Shtylyov44854ad2006-12-29 16:49:26 -08005 * This is a look-alike variation of the ICH0 PIIX4 Ultra-66,
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 * but this keeps the ISA-Bridge and slots alive.
7 *
8 */
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/types.h>
11#include <linux/module.h>
12#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/pci.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/ide.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/init.h>
16
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +020017#define DRV_NAME "slc90e66"
18
Bartlomiej Zolnierkiewicza4829582007-10-20 00:32:35 +020019static DEFINE_SPINLOCK(slc90e66_lock);
20
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020021static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
Linus Torvalds1da177e2005-04-16 15:20:36 -070022{
23 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +010024 struct pci_dev *dev = to_pci_dev(hwif->dev);
Sergei Shtylyov24e64582007-02-07 18:18:34 +010025 int is_slave = drive->dn & 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 int master_port = hwif->channel ? 0x42 : 0x40;
27 int slave_port = 0x44;
28 unsigned long flags;
29 u16 master_data;
30 u8 slave_data;
Paolo Ciarrocchi5749c842008-04-26 17:36:39 +020031 int control = 0;
Sergei Shtylyov24e64582007-02-07 18:18:34 +010032 /* ISP RTC */
Paolo Ciarrocchi5749c842008-04-26 17:36:39 +020033 static const u8 timings[][2] = {
Sergei Shtylyov24e64582007-02-07 18:18:34 +010034 { 0, 0 },
35 { 0, 0 },
36 { 1, 0 },
37 { 2, 1 },
38 { 2, 3 }, };
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Bartlomiej Zolnierkiewicza4829582007-10-20 00:32:35 +020040 spin_lock_irqsave(&slc90e66_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 pci_read_config_word(dev, master_port, &master_data);
Sergei Shtylyov24e64582007-02-07 18:18:34 +010042
43 if (pio > 1)
44 control |= 1; /* Programmable timing on */
45 if (drive->media == ide_disk)
46 control |= 4; /* Prefetch, post write */
47 if (pio > 2)
48 control |= 2; /* IORDY */
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 if (is_slave) {
Sergei Shtylyov24e64582007-02-07 18:18:34 +010050 master_data |= 0x4000;
51 master_data &= ~0x0070;
52 if (pio > 1) {
Sergei Shtylyov07af4272007-03-03 17:48:53 +010053 /* Set PPE, IE and TIME */
54 master_data |= control << 4;
Sergei Shtylyov24e64582007-02-07 18:18:34 +010055 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 pci_read_config_byte(dev, slave_port, &slave_data);
Sergei Shtylyov07af4272007-03-03 17:48:53 +010057 slave_data &= hwif->channel ? 0x0f : 0xf0;
58 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
59 (hwif->channel ? 4 : 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 } else {
Sergei Shtylyov24e64582007-02-07 18:18:34 +010061 master_data &= ~0x3307;
62 if (pio > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 /* enable PPE, IE and TIME */
Sergei Shtylyov07af4272007-03-03 17:48:53 +010064 master_data |= control;
Sergei Shtylyov24e64582007-02-07 18:18:34 +010065 }
Sergei Shtylyov07af4272007-03-03 17:48:53 +010066 master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 }
68 pci_write_config_word(dev, master_port, master_data);
69 if (is_slave)
70 pci_write_config_byte(dev, slave_port, slave_data);
Bartlomiej Zolnierkiewicza4829582007-10-20 00:32:35 +020071 spin_unlock_irqrestore(&slc90e66_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072}
73
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020074static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -070075{
76 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +010077 struct pci_dev *dev = to_pci_dev(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 u8 maslave = hwif->channel ? 0x42 : 0x40;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 int sitre = 0, a_speed = 7 << (drive->dn * 4);
80 int u_speed = 0, u_flag = 1 << drive->dn;
81 u16 reg4042, reg44, reg48, reg4a;
82
83 pci_read_config_word(dev, maslave, &reg4042);
84 sitre = (reg4042 & 0x4000) ? 1 : 0;
85 pci_read_config_word(dev, 0x44, &reg44);
86 pci_read_config_word(dev, 0x48, &reg48);
87 pci_read_config_word(dev, 0x4a, &reg4a);
88
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 if (speed >= XFER_UDMA_0) {
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +010090 u_speed = (speed - XFER_UDMA_0) << (drive->dn * 4);
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 if (!(reg48 & u_flag))
93 pci_write_config_word(dev, 0x48, reg48|u_flag);
94 /* FIXME: (reg4a & a_speed) ? */
95 if ((reg4a & u_speed) != u_speed) {
96 pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
97 pci_read_config_word(dev, 0x4a, &reg4a);
98 pci_write_config_word(dev, 0x4a, reg4a|u_speed);
99 }
100 } else {
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200101 const u8 mwdma_to_pio[] = { 0, 3, 4 };
Bartlomiej Zolnierkiewicz1c54a932007-10-16 22:29:56 +0200102 u8 pio;
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 if (reg48 & u_flag)
105 pci_write_config_word(dev, 0x48, reg48 & ~u_flag);
106 if (reg4a & a_speed)
107 pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200108
109 if (speed >= XFER_MW_DMA_0)
110 pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
111 else
112 pio = 2; /* only SWDMA2 is allowed */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
Bartlomiej Zolnierkiewicz1c54a932007-10-16 22:29:56 +0200114 slc90e66_set_pio_mode(drive, pio);
115 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116}
117
Bartlomiej Zolnierkiewiczf454cbe2008-08-05 18:17:04 +0200118static u8 slc90e66_cable_detect(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100120 struct pci_dev *dev = to_pci_dev(hwif->dev);
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100121 u8 reg47 = 0, mask = hwif->channel ? 0x01 : 0x02;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100123 pci_read_config_byte(dev, 0x47, &reg47);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100125 /* bit[0(1)]: 0:80, 1:40 */
126 return (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
127}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200129static const struct ide_port_ops slc90e66_port_ops = {
130 .set_pio_mode = slc90e66_set_pio_mode,
131 .set_dma_mode = slc90e66_set_dma_mode,
132 .cable_detect = slc90e66_cable_detect,
133};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200135static const struct ide_port_info slc90e66_chipset __devinitdata = {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200136 .name = DRV_NAME,
Paolo Ciarrocchi5749c842008-04-26 17:36:39 +0200137 .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} },
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200138 .port_ops = &slc90e66_port_ops,
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +0200139 .host_flags = IDE_HFLAG_LEGACY_IRQS,
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200140 .pio_mask = ATA_PIO4,
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200141 .swdma_mask = ATA_SWDMA2_ONLY,
142 .mwdma_mask = ATA_MWDMA12_ONLY,
143 .udma_mask = ATA_UDMA4,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144};
145
146static int __devinit slc90e66_init_one(struct pci_dev *dev, const struct pci_device_id *id)
147{
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200148 return ide_pci_init_one(dev, &slc90e66_chipset, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149}
150
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200151static const struct pci_device_id slc90e66_pci_tbl[] = {
152 { PCI_VDEVICE(EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 { 0, },
154};
155MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl);
156
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200157static struct pci_driver slc90e66_pci_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 .name = "SLC90e66_IDE",
159 .id_table = slc90e66_pci_tbl,
160 .probe = slc90e66_init_one,
Bartlomiej Zolnierkiewicz64b0fed2008-07-24 22:53:25 +0200161 .remove = ide_pci_remove,
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200162 .suspend = ide_pci_suspend,
163 .resume = ide_pci_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164};
165
Bartlomiej Zolnierkiewicz82ab1ee2007-01-27 13:46:56 +0100166static int __init slc90e66_ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200168 return ide_pci_register_driver(&slc90e66_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169}
170
Bartlomiej Zolnierkiewicz64b0fed2008-07-24 22:53:25 +0200171static void __exit slc90e66_ide_exit(void)
172{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200173 pci_unregister_driver(&slc90e66_pci_driver);
Bartlomiej Zolnierkiewicz64b0fed2008-07-24 22:53:25 +0200174}
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176module_init(slc90e66_ide_init);
Bartlomiej Zolnierkiewicz64b0fed2008-07-24 22:53:25 +0200177module_exit(slc90e66_ide_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
179MODULE_AUTHOR("Andre Hedrick");
180MODULE_DESCRIPTION("PCI driver module for SLC90E66 IDE");
181MODULE_LICENSE("GPL");