4 * Copyright (C) 2006 Jack Lee
5 * Copyright (C) 2006 Alan Cox
6 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
9 #include <linux/kernel.h>
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/delay.h>
14 #include <linux/hdreg.h>
15 #include <linux/ide.h>
16 #include <linux/init.h>
21 * it8213_set_pio_mode - set host controller for PIO mode
23 * @pio: PIO mode number
25 * Set the interface PIO mode.
28 static void it8213_set_pio_mode(ide_drive_t
*drive
, const u8 pio
)
30 ide_hwif_t
*hwif
= HWIF(drive
);
31 struct pci_dev
*dev
= hwif
->pci_dev
;
32 int is_slave
= drive
->dn
& 1;
33 int master_port
= 0x40;
34 int slave_port
= 0x44;
38 static DEFINE_SPINLOCK(tune_lock
);
41 static const u8 timings
[][2]= {
48 spin_lock_irqsave(&tune_lock
, flags
);
49 pci_read_config_word(dev
, master_port
, &master_data
);
52 control
|= 1; /* Programmable timing on */
53 if (drive
->media
!= ide_disk
)
54 control
|= 4; /* ATAPI */
56 control
|= 2; /* IORDY */
58 master_data
|= 0x4000;
59 master_data
&= ~0x0070;
61 master_data
= master_data
| (control
<< 4);
62 pci_read_config_byte(dev
, slave_port
, &slave_data
);
63 slave_data
= slave_data
& 0xf0;
64 slave_data
= slave_data
| (timings
[pio
][0] << 2) | timings
[pio
][1];
66 master_data
&= ~0x3307;
68 master_data
= master_data
| control
;
69 master_data
= master_data
| (timings
[pio
][0] << 12) | (timings
[pio
][1] << 8);
71 pci_write_config_word(dev
, master_port
, master_data
);
73 pci_write_config_byte(dev
, slave_port
, slave_data
);
74 spin_unlock_irqrestore(&tune_lock
, flags
);
78 * it8213_set_dma_mode - set host controller for DMA mode
82 * Tune the ITE chipset for the DMA mode.
85 static void it8213_set_dma_mode(ide_drive_t
*drive
, const u8 speed
)
87 ide_hwif_t
*hwif
= HWIF(drive
);
88 struct pci_dev
*dev
= hwif
->pci_dev
;
90 int a_speed
= 3 << (drive
->dn
* 4);
91 int u_flag
= 1 << drive
->dn
;
92 int v_flag
= 0x01 << drive
->dn
;
93 int w_flag
= 0x10 << drive
->dn
;
96 u8 reg48
, reg54
, reg55
, pio
;
98 pci_read_config_word(dev
, maslave
, ®4042
);
99 pci_read_config_byte(dev
, 0x48, ®48
);
100 pci_read_config_word(dev
, 0x4a, ®4a
);
101 pci_read_config_byte(dev
, 0x54, ®54
);
102 pci_read_config_byte(dev
, 0x55, ®55
);
107 case XFER_UDMA_2
: u_speed
= 2 << (drive
->dn
* 4); break;
110 case XFER_UDMA_1
: u_speed
= 1 << (drive
->dn
* 4); break;
111 case XFER_UDMA_0
: u_speed
= 0 << (drive
->dn
* 4); break;
121 if (speed
>= XFER_UDMA_0
) {
122 if (!(reg48
& u_flag
))
123 pci_write_config_byte(dev
, 0x48, reg48
| u_flag
);
124 if (speed
>= XFER_UDMA_5
) {
125 pci_write_config_byte(dev
, 0x55, (u8
) reg55
|w_flag
);
127 pci_write_config_byte(dev
, 0x55, (u8
) reg55
& ~w_flag
);
130 if ((reg4a
& a_speed
) != u_speed
)
131 pci_write_config_word(dev
, 0x4a, (reg4a
& ~a_speed
) | u_speed
);
132 if (speed
> XFER_UDMA_2
) {
133 if (!(reg54
& v_flag
))
134 pci_write_config_byte(dev
, 0x54, reg54
| v_flag
);
136 pci_write_config_byte(dev
, 0x54, reg54
& ~v_flag
);
140 const u8 mwdma_to_pio
[] = { 0, 3, 4 };
143 pci_write_config_byte(dev
, 0x48, reg48
& ~u_flag
);
145 pci_write_config_word(dev
, 0x4a, reg4a
& ~a_speed
);
147 pci_write_config_byte(dev
, 0x54, reg54
& ~v_flag
);
149 pci_write_config_byte(dev
, 0x55, (u8
) reg55
& ~w_flag
);
151 if (speed
>= XFER_MW_DMA_0
)
152 pio
= mwdma_to_pio
[speed
- XFER_MW_DMA_0
];
154 pio
= 2; /* only SWDMA2 is allowed */
157 it8213_set_pio_mode(drive
, pio
);
161 * it8213_configure_drive_for_dma - set up for DMA transfers
162 * @drive: drive we are going to set up
164 * Set up the drive for DMA, tune the controller and drive as
165 * required. If the drive isn't suitable for DMA or we hit
166 * other problems then we will drop down to PIO and set up
170 static int it8213_config_drive_for_dma (ide_drive_t
*drive
)
172 if (ide_tune_dma(drive
))
175 ide_set_max_pio(drive
);
181 * init_hwif_it8213 - set up hwif structs
182 * @hwif: interface to set up
184 * We do the basic set up of the interface structure. The IT8212
185 * requires several custom handlers so we override the default
186 * ide DMA handlers appropriately
189 static void __devinit
init_hwif_it8213(ide_hwif_t
*hwif
)
193 hwif
->set_dma_mode
= &it8213_set_dma_mode
;
194 hwif
->set_pio_mode
= &it8213_set_pio_mode
;
198 hwif
->drives
[0].autotune
= 1;
199 hwif
->drives
[1].autotune
= 1;
205 hwif
->ultra_mask
= 0x7f;
206 hwif
->mwdma_mask
= 0x06;
207 hwif
->swdma_mask
= 0x04;
209 pci_read_config_byte(hwif
->pci_dev
, 0x42, ®42h
);
211 hwif
->ide_dma_check
= &it8213_config_drive_for_dma
;
213 if (hwif
->cbl
!= ATA_CBL_PATA40_SHORT
)
214 hwif
->cbl
= (reg42h
& 0x02) ? ATA_CBL_PATA40
: ATA_CBL_PATA80
;
217 * The BIOS often doesn't set up DMA on this controller
218 * so we always do it.
223 hwif
->drives
[0].autodma
= hwif
->autodma
;
224 hwif
->drives
[1].autodma
= hwif
->autodma
;
228 #define DECLARE_ITE_DEV(name_str) \
231 .init_hwif = init_hwif_it8213, \
232 .autodma = AUTODMA, \
233 .enablebits = {{0x41,0x80,0x80}}, \
234 .bootable = ON_BOARD, \
235 .host_flags = IDE_HFLAG_SINGLE, \
236 .pio_mask = ATA_PIO4, \
239 static ide_pci_device_t it8213_chipsets
[] __devinitdata
= {
240 /* 0 */ DECLARE_ITE_DEV("IT8213"),
245 * it8213_init_one - pci layer discovery entry
247 * @id: ident table entry
249 * Called by the PCI code when it finds an ITE8213 controller. As
250 * this device follows the standard interfaces we can use the
251 * standard helper functions to do almost all the work for us.
254 static int __devinit
it8213_init_one(struct pci_dev
*dev
, const struct pci_device_id
*id
)
256 ide_setup_pci_device(dev
, &it8213_chipsets
[id
->driver_data
]);
261 static struct pci_device_id it8213_pci_tbl
[] = {
262 { PCI_VENDOR_ID_ITE
, 0x8213, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0 },
266 MODULE_DEVICE_TABLE(pci
, it8213_pci_tbl
);
268 static struct pci_driver driver
= {
269 .name
= "ITE8213_IDE",
270 .id_table
= it8213_pci_tbl
,
271 .probe
= it8213_init_one
,
274 static int __init
it8213_ide_init(void)
276 return ide_pci_register_driver(&driver
);
279 module_init(it8213_ide_init
);
281 MODULE_AUTHOR("Jack Lee, Alan Cox");
282 MODULE_DESCRIPTION("PCI driver module for the ITE 8213");
283 MODULE_LICENSE("GPL");