aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/ide/pci/hpt34x.c
blob: cb8fe5643d3b75969d28ce5f72ddb8bc26b01ab8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/*
 * linux/drivers/ide/pci/hpt34x.c		Version 0.40	Sept 10, 2002
 *
 * Copyright (C) 1998-2000	Andre Hedrick <andre@linux-ide.org>
 * May be copied or modified under the terms of the GNU General Public License
 *
 *
 * 00:12.0 Unknown mass storage controller:
 * Triones Technologies, Inc.
 * Unknown device 0003 (rev 01)
 *
 * hde: UDMA 2 (0x0000 0x0002) (0x0000 0x0010)
 * hdf: UDMA 2 (0x0002 0x0012) (0x0010 0x0030)
 * hde: DMA 2  (0x0000 0x0002) (0x0000 0x0010)
 * hdf: DMA 2  (0x0002 0x0012) (0x0010 0x0030)
 * hdg: DMA 1  (0x0012 0x0052) (0x0030 0x0070)
 * hdh: DMA 1  (0x0052 0x0252) (0x0070 0x00f0)
 *
 * ide-pci.c reference
 *
 * Since there are two cards that report almost identically,
 * the only discernable difference is the values reported in pcicmd.
 * Booting-BIOS card or HPT363 :: pcicmd == 0x07
 * Non-bootable card or HPT343 :: pcicmd == 0x05
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ide.h>

#include <asm/io.h>
#include <asm/irq.h>

#define HPT343_DEBUG_DRIVE_INFO		0

static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
{
	struct pci_dev *dev	= HWIF(drive)->pci_dev;
	u8 speed = ide_rate_filter(drive, xferspeed);
	u32 reg1= 0, tmp1 = 0, reg2 = 0, tmp2 = 0;
	u8			hi_speed, lo_speed;

	hi_speed = speed >> 4;
	lo_speed = speed & 0x0f;

	if (hi_speed & 7) {
		hi_speed = (hi_speed & 4) ? 0x01 : 0x10;
	} else {
		lo_speed <<= 5;
		lo_speed >>= 5;
	}

	pci_read_config_dword(dev, 0x44, &reg1);
	pci_read_config_dword(dev, 0x48, &reg2);
	tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
	tmp2 = ((hi_speed << drive->dn) | (reg2 & ~(0x11 << drive->dn)));
	pci_write_config_dword(dev, 0x44, tmp1);
	pci_write_config_dword(dev, 0x48, tmp2);

#if HPT343_DEBUG_DRIVE_INFO
	printk("%s: %s drive%d (0x%04x 0x%04x) (0x%04x 0x%04x)" \
		" (0x%02x 0x%02x)\n",
		drive->name, ide_xfer_verbose(speed),
		drive->dn, reg1, tmp1, reg2, tmp2,
		hi_speed, lo_speed);
#endif /* HPT343_DEBUG_DRIVE_INFO */

	return(ide_config_drive_speed(drive, speed));
}

static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio)
{
	pio = ide_get_best_pio_mode(drive, pio, 5);
	(void) hpt34x_tune_chipset(drive, (XFER_PIO_0 + pio));
}

static int hpt34x_config_drive_xfer_rate (ide_drive_t *drive)
{
	drive->init_speed = 0;

	if (ide_tune_dma(drive))
		return -1;

	if (ide_use_fast_pio(drive))
		hpt34x_tune_drive(drive, 255);

	return -1;
}

/*
 * If the BIOS does not set the IO base addaress to XX00, 343 will fail.
 */
#define	HPT34X_PCI_INIT_REG		0x80

static unsigned int __devinit init_chipset_hpt34x(struct pci_dev *dev, const char *name)
{
	int i = 0;
	unsigned long hpt34xIoBase = pci_resource_start(dev, 4);
	unsigned long hpt_addr[4] = { 0x20, 0x34, 0x28, 0x3c };
	unsigned long hpt_addr_len[4] = { 7, 3, 7, 3 };
	u16 cmd;
	unsigned long flags;

	local_irq_save(flags);

	pci_write_config_byte(dev, HPT34X_PCI_INIT_REG, 0x00);
	pci_read_config_word(dev, PCI_COMMAND, &cmd);

	if (cmd & PCI_COMMAND_MEMORY)
		pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
	else
		pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);

	/*
	 * Since 20-23 can be assigned and are R/W, we correct them.
	 */
	pci_write_config_word(dev, PCI_COMMAND, cmd & ~PCI_COMMAND_IO);
	for(i=0; i<4; i++) {
		dev->resource[i].start = (hpt34xIoBase + hpt_addr[i]);
		dev->resource[i].end = dev->resource[i].start + hpt_addr_len[i];
		dev->resource[i].flags = IORESOURCE_IO;
		pci_write_config_dword(dev,
				(PCI_BASE_ADDRESS_0 + (i * 4)),
				dev->resource[i].start);
	}
	pci_write_config_word(dev, PCI_COMMAND, cmd);

	local_irq_restore(flags);

	return dev->irq;
}

static void __devinit init_hwif_hpt34x(ide_hwif_t *hwif)
{
	u16 pcicmd = 0;

	hwif->autodma = 0;

	hwif->tuneproc = &hpt34x_tune_drive;
	hwif->speedproc = &hpt34x_tune_chipset;
	hwif->drives[0].autotune = 1;
	hwif->drives[1].autotune = 1;

	pci_read_config_word(hwif->pci_dev, PCI_COMMAND, &pcicmd);

	if (!hwif->dma_base)
		return;

#ifdef CONFIG_HPT34X_AUTODMA
	hwif->ultra_mask = 0x07;
	hwif->mwdma_mask = 0x07;
	hwif->swdma_mask = 0x07;
#endif

	hwif->ide_dma_check = &hpt34x_config_drive_xfer_rate;
	if (!noautodma)
		hwif->autodma = (pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0;
	hwif->drives[0].autodma = hwif->autodma;
	hwif->drives[1].autodma = hwif->autodma;
}

static ide_pci_device_t hpt34x_chipset __devinitdata = {
	.name		= "HPT34X",
	.init_chipset	= init_chipset_hpt34x,
	.init_hwif	= init_hwif_hpt34x,
	.autodma	= NOAUTODMA,
	.bootable	= NEVER_BOARD,
	.extra		= 16,
	.pio_mask	= ATA_PIO5,
};

static int __devinit hpt34x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
	ide_pci_device_t *d = &hpt34x_chipset;
	static char *chipset_names[] = {"HPT343", "HPT345"};
	u16 pcicmd = 0;

	pci_read_config_word(dev, PCI_COMMAND, &pcicmd);

	d->name = chipset_names[(pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0];
	d->bootable = (pcicmd & PCI_COMMAND_MEMORY) ? OFF_BOARD : NEVER_BOARD;

	return ide_setup_pci_device(dev, d);
}

static struct pci_device_id hpt34x_pci_tbl[] = {
	{ PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT343, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{ 0, },
};
MODULE_DEVICE_TABLE(pci, hpt34x_pci_tbl);

static struct pci_driver driver = {
	.name		= "HPT34x_IDE",
	.id_table	= hpt34x_pci_tbl,
	.probe		= hpt34x_init_one,
};

static int __init hpt34x_ide_init(void)
{
	return ide_pci_register_driver(&driver);
}

module_init(hpt34x_ide_init);

MODULE_AUTHOR("Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for Highpoint 34x IDE");
MODULE_LICENSE("GPL");