ide: add struct ide_port_ops (take 2)
[linux-2.6.git] / drivers / ide / pci / hpt34x.c
1 /*
2  * Copyright (C) 1998-2000      Andre Hedrick <andre@linux-ide.org>
3  *
4  * May be copied or modified under the terms of the GNU General Public License
5  *
6  *
7  * 00:12.0 Unknown mass storage controller:
8  * Triones Technologies, Inc.
9  * Unknown device 0003 (rev 01)
10  *
11  * hde: UDMA 2 (0x0000 0x0002) (0x0000 0x0010)
12  * hdf: UDMA 2 (0x0002 0x0012) (0x0010 0x0030)
13  * hde: DMA 2  (0x0000 0x0002) (0x0000 0x0010)
14  * hdf: DMA 2  (0x0002 0x0012) (0x0010 0x0030)
15  * hdg: DMA 1  (0x0012 0x0052) (0x0030 0x0070)
16  * hdh: DMA 1  (0x0052 0x0252) (0x0070 0x00f0)
17  *
18  * ide-pci.c reference
19  *
20  * Since there are two cards that report almost identically,
21  * the only discernable difference is the values reported in pcicmd.
22  * Booting-BIOS card or HPT363 :: pcicmd == 0x07
23  * Non-bootable card or HPT343 :: pcicmd == 0x05
24  */
25
26 #include <linux/module.h>
27 #include <linux/types.h>
28 #include <linux/kernel.h>
29 #include <linux/ioport.h>
30 #include <linux/hdreg.h>
31 #include <linux/interrupt.h>
32 #include <linux/pci.h>
33 #include <linux/init.h>
34 #include <linux/ide.h>
35
36 #define HPT343_DEBUG_DRIVE_INFO         0
37
38 static void hpt34x_set_mode(ide_drive_t *drive, const u8 speed)
39 {
40         struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
41         u32 reg1= 0, tmp1 = 0, reg2 = 0, tmp2 = 0;
42         u8                      hi_speed, lo_speed;
43
44         hi_speed = speed >> 4;
45         lo_speed = speed & 0x0f;
46
47         if (hi_speed & 7) {
48                 hi_speed = (hi_speed & 4) ? 0x01 : 0x10;
49         } else {
50                 lo_speed <<= 5;
51                 lo_speed >>= 5;
52         }
53
54         pci_read_config_dword(dev, 0x44, &reg1);
55         pci_read_config_dword(dev, 0x48, &reg2);
56         tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
57         tmp2 = ((hi_speed << drive->dn) | (reg2 & ~(0x11 << drive->dn)));
58         pci_write_config_dword(dev, 0x44, tmp1);
59         pci_write_config_dword(dev, 0x48, tmp2);
60
61 #if HPT343_DEBUG_DRIVE_INFO
62         printk("%s: %s drive%d (0x%04x 0x%04x) (0x%04x 0x%04x)" \
63                 " (0x%02x 0x%02x)\n",
64                 drive->name, ide_xfer_verbose(speed),
65                 drive->dn, reg1, tmp1, reg2, tmp2,
66                 hi_speed, lo_speed);
67 #endif /* HPT343_DEBUG_DRIVE_INFO */
68 }
69
70 static void hpt34x_set_pio_mode(ide_drive_t *drive, const u8 pio)
71 {
72         hpt34x_set_mode(drive, XFER_PIO_0 + pio);
73 }
74
75 /*
76  * If the BIOS does not set the IO base addaress to XX00, 343 will fail.
77  */
78 #define HPT34X_PCI_INIT_REG             0x80
79
80 static unsigned int __devinit init_chipset_hpt34x(struct pci_dev *dev, const char *name)
81 {
82         int i = 0;
83         unsigned long hpt34xIoBase = pci_resource_start(dev, 4);
84         unsigned long hpt_addr[4] = { 0x20, 0x34, 0x28, 0x3c };
85         unsigned long hpt_addr_len[4] = { 7, 3, 7, 3 };
86         u16 cmd;
87         unsigned long flags;
88
89         local_irq_save(flags);
90
91         pci_write_config_byte(dev, HPT34X_PCI_INIT_REG, 0x00);
92         pci_read_config_word(dev, PCI_COMMAND, &cmd);
93
94         if (cmd & PCI_COMMAND_MEMORY)
95                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
96         else
97                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
98
99         /*
100          * Since 20-23 can be assigned and are R/W, we correct them.
101          */
102         pci_write_config_word(dev, PCI_COMMAND, cmd & ~PCI_COMMAND_IO);
103         for(i=0; i<4; i++) {
104                 dev->resource[i].start = (hpt34xIoBase + hpt_addr[i]);
105                 dev->resource[i].end = dev->resource[i].start + hpt_addr_len[i];
106                 dev->resource[i].flags = IORESOURCE_IO;
107                 pci_write_config_dword(dev,
108                                 (PCI_BASE_ADDRESS_0 + (i * 4)),
109                                 dev->resource[i].start);
110         }
111         pci_write_config_word(dev, PCI_COMMAND, cmd);
112
113         local_irq_restore(flags);
114
115         return dev->irq;
116 }
117
118 static const struct ide_port_ops hpt34x_port_ops = {
119         .set_pio_mode           = hpt34x_set_pio_mode,
120         .set_dma_mode           = hpt34x_set_mode,
121 };
122
123 #define IDE_HFLAGS_HPT34X \
124         (IDE_HFLAG_NO_ATAPI_DMA | \
125          IDE_HFLAG_NO_DSC | \
126          IDE_HFLAG_ABUSE_SET_DMA_MODE | \
127          IDE_HFLAG_NO_AUTODMA)
128
129 static const struct ide_port_info hpt34x_chipsets[] __devinitdata = {
130         { /* 0 */
131                 .name           = "HPT343",
132                 .init_chipset   = init_chipset_hpt34x,
133                 .extra          = 16,
134                 .port_ops       = &hpt34x_port_ops,
135                 .host_flags     = IDE_HFLAGS_HPT34X | IDE_HFLAG_NON_BOOTABLE,
136                 .pio_mask       = ATA_PIO5,
137         },
138         { /* 1 */
139                 .name           = "HPT345",
140                 .init_chipset   = init_chipset_hpt34x,
141                 .extra          = 16,
142                 .port_ops       = &hpt34x_port_ops,
143                 .host_flags     = IDE_HFLAGS_HPT34X | IDE_HFLAG_OFF_BOARD,
144                 .pio_mask       = ATA_PIO5,
145 #ifdef CONFIG_HPT34X_AUTODMA
146                 .swdma_mask     = ATA_SWDMA2,
147                 .mwdma_mask     = ATA_MWDMA2,
148                 .udma_mask      = ATA_UDMA2,
149 #endif
150         }
151 };
152
153 static int __devinit hpt34x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
154 {
155         const struct ide_port_info *d;
156         u16 pcicmd = 0;
157
158         pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
159
160         d = &hpt34x_chipsets[(pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0];
161
162         return ide_setup_pci_device(dev, d);
163 }
164
165 static const struct pci_device_id hpt34x_pci_tbl[] = {
166         { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), 0 },
167         { 0, },
168 };
169 MODULE_DEVICE_TABLE(pci, hpt34x_pci_tbl);
170
171 static struct pci_driver driver = {
172         .name           = "HPT34x_IDE",
173         .id_table       = hpt34x_pci_tbl,
174         .probe          = hpt34x_init_one,
175 };
176
177 static int __init hpt34x_ide_init(void)
178 {
179         return ide_pci_register_driver(&driver);
180 }
181
182 module_init(hpt34x_ide_init);
183
184 MODULE_AUTHOR("Andre Hedrick");
185 MODULE_DESCRIPTION("PCI driver module for Highpoint 34x IDE");
186 MODULE_LICENSE("GPL");