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Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +01001/*
2 * ITE 8213 IDE driver
3 *
4 * Copyright (C) 2006 Jack Lee
5 * Copyright (C) 2006 Alan Cox
6 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
7 */
8
Jack Lee9c6712c2007-02-07 18:19:09 +01009#include <linux/kernel.h>
10#include <linux/types.h>
11#include <linux/module.h>
12#include <linux/pci.h>
Jack Lee9c6712c2007-02-07 18:19:09 +010013#include <linux/hdreg.h>
14#include <linux/ide.h>
15#include <linux/init.h>
16
Jack Lee9c6712c2007-02-07 18:19:09 +010017/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020018 * it8213_set_pio_mode - set host controller for PIO mode
19 * @drive: drive
20 * @pio: PIO mode number
Jack Lee9c6712c2007-02-07 18:19:09 +010021 *
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010022 * Set the interface PIO mode.
Jack Lee9c6712c2007-02-07 18:19:09 +010023 */
24
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020025static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
Jack Lee9c6712c2007-02-07 18:19:09 +010026{
27 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +010028 struct pci_dev *dev = to_pci_dev(hwif->dev);
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010029 int is_slave = drive->dn & 1;
Jack Lee9c6712c2007-02-07 18:19:09 +010030 int master_port = 0x40;
31 int slave_port = 0x44;
32 unsigned long flags;
33 u16 master_data;
34 u8 slave_data;
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010035 static DEFINE_SPINLOCK(tune_lock);
36 int control = 0;
Jack Lee9c6712c2007-02-07 18:19:09 +010037
Paolo Ciarrocchia2826192008-04-26 17:36:41 +020038 static const u8 timings[][2] = {
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010039 { 0, 0 },
40 { 0, 0 },
41 { 1, 0 },
42 { 2, 1 },
43 { 2, 3 }, };
Jack Lee9c6712c2007-02-07 18:19:09 +010044
Jack Lee9c6712c2007-02-07 18:19:09 +010045 spin_lock_irqsave(&tune_lock, flags);
46 pci_read_config_word(dev, master_port, &master_data);
Jack Lee9c6712c2007-02-07 18:19:09 +010047
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010048 if (pio > 1)
49 control |= 1; /* Programmable timing on */
50 if (drive->media != ide_disk)
51 control |= 4; /* ATAPI */
52 if (pio > 2)
53 control |= 2; /* IORDY */
54 if (is_slave) {
55 master_data |= 0x4000;
56 master_data &= ~0x0070;
57 if (pio > 1)
58 master_data = master_data | (control << 4);
Jack Lee9c6712c2007-02-07 18:19:09 +010059 pci_read_config_byte(dev, slave_port, &slave_data);
60 slave_data = slave_data & 0xf0;
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010061 slave_data = slave_data | (timings[pio][0] << 2) | timings[pio][1];
Jack Lee9c6712c2007-02-07 18:19:09 +010062 } else {
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010063 master_data &= ~0x3307;
Jack Lee9c6712c2007-02-07 18:19:09 +010064 if (pio > 1)
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +010065 master_data = master_data | control;
Jack Lee9c6712c2007-02-07 18:19:09 +010066 master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8);
67 }
68 pci_write_config_word(dev, master_port, master_data);
69 if (is_slave)
70 pci_write_config_byte(dev, slave_port, slave_data);
71 spin_unlock_irqrestore(&tune_lock, flags);
72}
73
Jack Lee9c6712c2007-02-07 18:19:09 +010074/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020075 * it8213_set_dma_mode - set host controller for DMA mode
76 * @drive: drive
77 * @speed: DMA mode
Jack Lee9c6712c2007-02-07 18:19:09 +010078 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020079 * Tune the ITE chipset for the DMA mode.
Jack Lee9c6712c2007-02-07 18:19:09 +010080 */
81
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020082static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
Jack Lee9c6712c2007-02-07 18:19:09 +010083{
Jack Lee9c6712c2007-02-07 18:19:09 +010084 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +010085 struct pci_dev *dev = to_pci_dev(hwif->dev);
Jack Lee9c6712c2007-02-07 18:19:09 +010086 u8 maslave = 0x40;
Jack Lee9c6712c2007-02-07 18:19:09 +010087 int a_speed = 3 << (drive->dn * 4);
88 int u_flag = 1 << drive->dn;
89 int v_flag = 0x01 << drive->dn;
90 int w_flag = 0x10 << drive->dn;
91 int u_speed = 0;
92 u16 reg4042, reg4a;
Bartlomiej Zolnierkiewicz1c54a932007-10-16 22:29:56 +020093 u8 reg48, reg54, reg55;
Jack Lee9c6712c2007-02-07 18:19:09 +010094
95 pci_read_config_word(dev, maslave, &reg4042);
96 pci_read_config_byte(dev, 0x48, &reg48);
97 pci_read_config_word(dev, 0x4a, &reg4a);
98 pci_read_config_byte(dev, 0x54, &reg54);
99 pci_read_config_byte(dev, 0x55, &reg55);
100
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100101 if (speed >= XFER_UDMA_0) {
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +0100102 u8 udma = speed - XFER_UDMA_0;
103
104 u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4);
105
Jack Lee9c6712c2007-02-07 18:19:09 +0100106 if (!(reg48 & u_flag))
107 pci_write_config_byte(dev, 0x48, reg48 | u_flag);
Paolo Ciarrocchia2826192008-04-26 17:36:41 +0200108 if (speed >= XFER_UDMA_5)
Jack Lee9c6712c2007-02-07 18:19:09 +0100109 pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag);
Paolo Ciarrocchia2826192008-04-26 17:36:41 +0200110 else
Jack Lee9c6712c2007-02-07 18:19:09 +0100111 pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
Jack Lee9c6712c2007-02-07 18:19:09 +0100112
113 if ((reg4a & a_speed) != u_speed)
114 pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed);
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100115 if (speed > XFER_UDMA_2) {
Jack Lee9c6712c2007-02-07 18:19:09 +0100116 if (!(reg54 & v_flag))
117 pci_write_config_byte(dev, 0x54, reg54 | v_flag);
118 } else
119 pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100120 } else {
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200121 const u8 mwdma_to_pio[] = { 0, 3, 4 };
Bartlomiej Zolnierkiewicz1c54a932007-10-16 22:29:56 +0200122 u8 pio;
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200123
Jack Lee9c6712c2007-02-07 18:19:09 +0100124 if (reg48 & u_flag)
125 pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
126 if (reg4a & a_speed)
127 pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
128 if (reg54 & v_flag)
129 pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
130 if (reg55 & w_flag)
131 pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
Bartlomiej Zolnierkiewicz8c91abf2007-10-16 22:29:54 +0200132
133 if (speed >= XFER_MW_DMA_0)
134 pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
135 else
136 pio = 2; /* only SWDMA2 is allowed */
Bartlomiej Zolnierkiewicz68aaf812007-08-01 23:46:46 +0200137
Bartlomiej Zolnierkiewicz1c54a932007-10-16 22:29:56 +0200138 it8213_set_pio_mode(drive, pio);
139 }
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100140}
Jack Lee9c6712c2007-02-07 18:19:09 +0100141
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100142static u8 __devinit it8213_cable_detect(ide_hwif_t *hwif)
143{
144 struct pci_dev *dev = to_pci_dev(hwif->dev);
145 u8 reg42h = 0;
146
147 pci_read_config_byte(dev, 0x42, &reg42h);
148
149 return (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
150}
151
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200152static const struct ide_port_ops it8213_port_ops = {
153 .set_pio_mode = it8213_set_pio_mode,
154 .set_dma_mode = it8213_set_dma_mode,
155 .cable_detect = it8213_cable_detect,
156};
Jack Lee9c6712c2007-02-07 18:19:09 +0100157
158#define DECLARE_ITE_DEV(name_str) \
159 { \
160 .name = name_str, \
Paolo Ciarrocchia2826192008-04-26 17:36:41 +0200161 .enablebits = { {0x41, 0x80, 0x80} }, \
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200162 .port_ops = &it8213_port_ops, \
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +0200163 .host_flags = IDE_HFLAG_SINGLE, \
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200164 .pio_mask = ATA_PIO4, \
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200165 .swdma_mask = ATA_SWDMA2_ONLY, \
166 .mwdma_mask = ATA_MWDMA12_ONLY, \
167 .udma_mask = ATA_UDMA6, \
Jack Lee9c6712c2007-02-07 18:19:09 +0100168 }
169
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200170static const struct ide_port_info it8213_chipsets[] __devinitdata = {
Jack Lee9c6712c2007-02-07 18:19:09 +0100171 /* 0 */ DECLARE_ITE_DEV("IT8213"),
172};
173
174
175/**
176 * it8213_init_one - pci layer discovery entry
177 * @dev: PCI device
178 * @id: ident table entry
179 *
180 * Called by the PCI code when it finds an ITE8213 controller. As
181 * this device follows the standard interfaces we can use the
182 * standard helper functions to do almost all the work for us.
183 */
184
185static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id)
186{
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200187 return ide_pci_init_one(dev, &it8213_chipsets[id->driver_data], NULL);
Jack Lee9c6712c2007-02-07 18:19:09 +0100188}
189
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200190static const struct pci_device_id it8213_pci_tbl[] = {
191 { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8213), 0 },
Jack Lee9c6712c2007-02-07 18:19:09 +0100192 { 0, },
193};
194
195MODULE_DEVICE_TABLE(pci, it8213_pci_tbl);
196
197static struct pci_driver driver = {
198 .name = "ITE8213_IDE",
199 .id_table = it8213_pci_tbl,
200 .probe = it8213_init_one,
Bartlomiej Zolnierkiewicz5102f762008-07-24 22:53:22 +0200201 .remove = ide_pci_remove,
Jack Lee9c6712c2007-02-07 18:19:09 +0100202};
203
204static int __init it8213_ide_init(void)
205{
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100206 return ide_pci_register_driver(&driver);
207}
Jack Lee9c6712c2007-02-07 18:19:09 +0100208
Bartlomiej Zolnierkiewicz5102f762008-07-24 22:53:22 +0200209static void __exit it8213_ide_exit(void)
210{
211 pci_unregister_driver(&driver);
212}
213
Jack Lee9c6712c2007-02-07 18:19:09 +0100214module_init(it8213_ide_init);
Bartlomiej Zolnierkiewicz5102f762008-07-24 22:53:22 +0200215module_exit(it8213_ide_exit);
Jack Lee9c6712c2007-02-07 18:19:09 +0100216
Bartlomiej Zolnierkiewicz67881822007-02-07 18:19:26 +0100217MODULE_AUTHOR("Jack Lee, Alan Cox");
Jack Lee9c6712c2007-02-07 18:19:09 +0100218MODULE_DESCRIPTION("PCI driver module for the ITE 8213");
219MODULE_LICENSE("GPL");