Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 | 2 | /* |
1da177e4 | 3 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> |
07af4276 | 4 | * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com> |
1da177e4 | 5 | * |
44854add | 6 | * This is a look-alike variation of the ICH0 PIIX4 Ultra-66, |
1da177e4 LT |
7 | * but this keeps the ISA-Bridge and slots alive. |
8 | * | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/types.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/kernel.h> | |
1da177e4 | 14 | #include <linux/pci.h> |
1da177e4 | 15 | #include <linux/ide.h> |
1da177e4 LT |
16 | #include <linux/init.h> |
17 | ||
ced3ec8a BZ |
18 | #define DRV_NAME "slc90e66" |
19 | ||
a482958b BZ |
20 | static DEFINE_SPINLOCK(slc90e66_lock); |
21 | ||
e085b3ca | 22 | static void slc90e66_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 23 | { |
36501650 | 24 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
24e6458d | 25 | int is_slave = drive->dn & 1; |
1da177e4 LT |
26 | int master_port = hwif->channel ? 0x42 : 0x40; |
27 | int slave_port = 0x44; | |
28 | unsigned long flags; | |
29 | u16 master_data; | |
30 | u8 slave_data; | |
5749c847 | 31 | int control = 0; |
e085b3ca BZ |
32 | const u8 pio = drive->pio_mode - XFER_PIO_0; |
33 | ||
24e6458d | 34 | /* ISP RTC */ |
5749c847 | 35 | static const u8 timings[][2] = { |
24e6458d SS |
36 | { 0, 0 }, |
37 | { 0, 0 }, | |
38 | { 1, 0 }, | |
39 | { 2, 1 }, | |
40 | { 2, 3 }, }; | |
1da177e4 | 41 | |
a482958b | 42 | spin_lock_irqsave(&slc90e66_lock, flags); |
1da177e4 | 43 | pci_read_config_word(dev, master_port, &master_data); |
24e6458d SS |
44 | |
45 | if (pio > 1) | |
46 | control |= 1; /* Programmable timing on */ | |
47 | if (drive->media == ide_disk) | |
48 | control |= 4; /* Prefetch, post write */ | |
c9ef59ff | 49 | if (ide_pio_need_iordy(drive, pio)) |
24e6458d | 50 | control |= 2; /* IORDY */ |
1da177e4 | 51 | if (is_slave) { |
24e6458d SS |
52 | master_data |= 0x4000; |
53 | master_data &= ~0x0070; | |
54 | if (pio > 1) { | |
07af4276 SS |
55 | /* Set PPE, IE and TIME */ |
56 | master_data |= control << 4; | |
24e6458d | 57 | } |
1da177e4 | 58 | pci_read_config_byte(dev, slave_port, &slave_data); |
07af4276 SS |
59 | slave_data &= hwif->channel ? 0x0f : 0xf0; |
60 | slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << | |
61 | (hwif->channel ? 4 : 0); | |
1da177e4 | 62 | } else { |
24e6458d SS |
63 | master_data &= ~0x3307; |
64 | if (pio > 1) { | |
1da177e4 | 65 | /* enable PPE, IE and TIME */ |
07af4276 | 66 | master_data |= control; |
24e6458d | 67 | } |
07af4276 | 68 | master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8); |
1da177e4 LT |
69 | } |
70 | pci_write_config_word(dev, master_port, master_data); | |
71 | if (is_slave) | |
72 | pci_write_config_byte(dev, slave_port, slave_data); | |
a482958b | 73 | spin_unlock_irqrestore(&slc90e66_lock, flags); |
1da177e4 LT |
74 | } |
75 | ||
8776168c | 76 | static void slc90e66_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 77 | { |
36501650 | 78 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 | 79 | u8 maslave = hwif->channel ? 0x42 : 0x40; |
1da177e4 LT |
80 | int sitre = 0, a_speed = 7 << (drive->dn * 4); |
81 | int u_speed = 0, u_flag = 1 << drive->dn; | |
82 | u16 reg4042, reg44, reg48, reg4a; | |
8776168c | 83 | const u8 speed = drive->dma_mode; |
1da177e4 LT |
84 | |
85 | pci_read_config_word(dev, maslave, ®4042); | |
86 | sitre = (reg4042 & 0x4000) ? 1 : 0; | |
87 | pci_read_config_word(dev, 0x44, ®44); | |
88 | pci_read_config_word(dev, 0x48, ®48); | |
89 | pci_read_config_word(dev, 0x4a, ®4a); | |
90 | ||
1da177e4 | 91 | if (speed >= XFER_UDMA_0) { |
4db90a14 BZ |
92 | u_speed = (speed - XFER_UDMA_0) << (drive->dn * 4); |
93 | ||
1da177e4 LT |
94 | if (!(reg48 & u_flag)) |
95 | pci_write_config_word(dev, 0x48, reg48|u_flag); | |
ee31527a | 96 | if ((reg4a & a_speed) != u_speed) { |
1da177e4 LT |
97 | pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); |
98 | pci_read_config_word(dev, 0x4a, ®4a); | |
99 | pci_write_config_word(dev, 0x4a, reg4a|u_speed); | |
100 | } | |
101 | } else { | |
8c91abf8 BZ |
102 | const u8 mwdma_to_pio[] = { 0, 3, 4 }; |
103 | ||
1da177e4 LT |
104 | 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); | |
8c91abf8 BZ |
108 | |
109 | if (speed >= XFER_MW_DMA_0) | |
e085b3ca BZ |
110 | drive->pio_mode = |
111 | mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0; | |
8c91abf8 | 112 | else |
e085b3ca | 113 | drive->pio_mode = XFER_PIO_2; /* for SWDMA2 */ |
1da177e4 | 114 | |
e085b3ca | 115 | slc90e66_set_pio_mode(hwif, drive); |
1c54a93d | 116 | } |
1da177e4 LT |
117 | } |
118 | ||
f454cbe8 | 119 | static u8 slc90e66_cable_detect(ide_hwif_t *hwif) |
1da177e4 | 120 | { |
36501650 | 121 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
bfa14b42 | 122 | u8 reg47 = 0, mask = hwif->channel ? 0x01 : 0x02; |
1da177e4 | 123 | |
36501650 | 124 | pci_read_config_byte(dev, 0x47, ®47); |
1da177e4 | 125 | |
bfa14b42 BZ |
126 | /* bit[0(1)]: 0:80, 1:40 */ |
127 | return (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; | |
128 | } | |
129 | ||
ac95beed BZ |
130 | static const struct ide_port_ops slc90e66_port_ops = { |
131 | .set_pio_mode = slc90e66_set_pio_mode, | |
132 | .set_dma_mode = slc90e66_set_dma_mode, | |
133 | .cable_detect = slc90e66_cable_detect, | |
134 | }; | |
1da177e4 | 135 | |
fe31edc8 | 136 | static const struct ide_port_info slc90e66_chipset = { |
ced3ec8a | 137 | .name = DRV_NAME, |
5749c847 | 138 | .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, |
ac95beed | 139 | .port_ops = &slc90e66_port_ops, |
4099d143 | 140 | .pio_mask = ATA_PIO4, |
5f8b6c34 BZ |
141 | .swdma_mask = ATA_SWDMA2_ONLY, |
142 | .mwdma_mask = ATA_MWDMA12_ONLY, | |
143 | .udma_mask = ATA_UDMA4, | |
1da177e4 LT |
144 | }; |
145 | ||
fe31edc8 GKH |
146 | static int slc90e66_init_one(struct pci_dev *dev, |
147 | const struct pci_device_id *id) | |
1da177e4 | 148 | { |
6cdf6eb3 | 149 | return ide_pci_init_one(dev, &slc90e66_chipset, NULL); |
1da177e4 LT |
150 | } |
151 | ||
9cbcc5e3 BZ |
152 | static const struct pci_device_id slc90e66_pci_tbl[] = { |
153 | { PCI_VDEVICE(EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0 }, | |
1da177e4 LT |
154 | { 0, }, |
155 | }; | |
156 | MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl); | |
157 | ||
a9ab09e2 | 158 | static struct pci_driver slc90e66_pci_driver = { |
1da177e4 LT |
159 | .name = "SLC90e66_IDE", |
160 | .id_table = slc90e66_pci_tbl, | |
161 | .probe = slc90e66_init_one, | |
64b0fed3 | 162 | .remove = ide_pci_remove, |
feb22b7f BZ |
163 | .suspend = ide_pci_suspend, |
164 | .resume = ide_pci_resume, | |
1da177e4 LT |
165 | }; |
166 | ||
82ab1eec | 167 | static int __init slc90e66_ide_init(void) |
1da177e4 | 168 | { |
a9ab09e2 | 169 | return ide_pci_register_driver(&slc90e66_pci_driver); |
1da177e4 LT |
170 | } |
171 | ||
64b0fed3 BZ |
172 | static void __exit slc90e66_ide_exit(void) |
173 | { | |
a9ab09e2 | 174 | pci_unregister_driver(&slc90e66_pci_driver); |
64b0fed3 BZ |
175 | } |
176 | ||
1da177e4 | 177 | module_init(slc90e66_ide_init); |
64b0fed3 | 178 | module_exit(slc90e66_ide_exit); |
1da177e4 LT |
179 | |
180 | MODULE_AUTHOR("Andre Hedrick"); | |
181 | MODULE_DESCRIPTION("PCI driver module for SLC90E66 IDE"); | |
182 | MODULE_LICENSE("GPL"); |