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61525f2f GL |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | /* ide.c - ide support functions */ | |
25 | ||
26 | ||
27 | #include <common.h> | |
28 | ||
29 | #ifdef CONFIG_CMD_IDE | |
30 | #include <ata.h> | |
31 | #include <ide.h> | |
32 | #include <pci.h> | |
33 | ||
34 | #define IT8212_PCI_CpuCONTROL 0x5e | |
35 | #define IT8212_PCI_PciModeCONTROL 0x50 | |
36 | #define IT8212_PCI_IdeIoCONFIG 0x40 | |
37 | #define IT8212_PCI_IdeBusSkewCONTROL 0x4c | |
38 | #define IT8212_PCI_IdeDrivingCURRENT 0x42 | |
39 | ||
6d0f6bcf | 40 | extern ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS]; |
61525f2f GL |
41 | extern struct pci_controller hose; |
42 | ||
43 | int ide_preinit (void) | |
44 | { | |
45 | int status; | |
46 | pci_dev_t devbusfn; | |
47 | int l; | |
48 | ||
49 | status = 1; | |
6d0f6bcf | 50 | for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) { |
61525f2f GL |
51 | ide_bus_offset[l] = -ATA_STATUS; |
52 | } | |
53 | devbusfn = pci_find_device(PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_680, 0); | |
54 | if (devbusfn == -1) | |
55 | devbusfn = pci_find_device(PCI_VENDOR_ID_ITE,PCI_DEVICE_ID_ITE_8212,0); | |
56 | if (devbusfn != -1) { | |
57 | status = 0; | |
58 | ||
59 | pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0, | |
60 | (u32 *) &ide_bus_offset[0]); | |
61 | ide_bus_offset[0] &= 0xfffffffe; | |
62 | ide_bus_offset[0] = pci_hose_bus_to_phys(&hose, | |
63 | ide_bus_offset[0] & 0xfffffffe, | |
64 | PCI_REGION_IO); | |
65 | pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_2, | |
66 | (u32 *) &ide_bus_offset[1]); | |
67 | ide_bus_offset[1] &= 0xfffffffe; | |
68 | ide_bus_offset[1] = pci_hose_bus_to_phys(&hose, | |
69 | ide_bus_offset[1] & 0xfffffffe, | |
70 | PCI_REGION_IO); | |
71 | } | |
72 | ||
73 | if (pci_find_device (PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8212, 0) != -1) { | |
74 | pci_write_config_byte(devbusfn, IT8212_PCI_CpuCONTROL, 0x01); | |
75 | pci_write_config_byte(devbusfn, IT8212_PCI_PciModeCONTROL, 0x00); | |
76 | pci_write_config_word(devbusfn, PCI_COMMAND, 0x0047); | |
77 | #ifdef CONFIG_IT8212_SECONDARY_ENABLE | |
78 | pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0xA0F3); | |
79 | #else | |
80 | pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0x8031); | |
81 | #endif | |
82 | pci_write_config_dword(devbusfn, IT8212_PCI_IdeBusSkewCONTROL, 0x02040204); | |
83 | /* __LS_COMMENT__ BUFFALO changed 2004.11.10 changed for EMI */ | |
268a804d WD |
84 | pci_write_config_byte(devbusfn, IT8212_PCI_IdeDrivingCURRENT, 0x36); /* 10mA */ |
85 | /* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x09); */ /* 4mA */ | |
86 | /* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x12); */ /* 6mA */ | |
87 | /* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x24); */ /* 6mA,2mA */ | |
88 | /* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x2D); */ /* 8mA,4mA */ | |
89 | pci_write_config_byte(devbusfn, PCI_LATENCY_TIMER, 0x00); | |
61525f2f GL |
90 | } |
91 | ||
92 | return (status); | |
93 | } | |
94 | ||
95 | void ide_set_reset (int flag) { | |
96 | return; | |
97 | } | |
98 | ||
99 | #endif /* CONFIG_CMD_IDE */ |