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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/**************************************************************************
*
* BRIEF MODULE DESCRIPTION
* PCI initialization for IDT EB434 board
*
* Copyright 2004 IDT Inc. (rischelp@idt.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
**************************************************************************
* May 2004 rkt, neb
*
* Initial Release
*
*
*
**************************************************************************
*/
#include <linux/autoconf.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/rc32434/rc32434.h>
#include <asm/rc32434/pci.h>
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
/* define an unsigned array for the PCI registers */
unsigned int korinaCnfgRegs[25] = {
KORINA_CNFG1, KORINA_CNFG2, KORINA_CNFG3, KORINA_CNFG4,
KORINA_CNFG5, KORINA_CNFG6, KORINA_CNFG7, KORINA_CNFG8,
KORINA_CNFG9, KORINA_CNFG10, KORINA_CNFG11, KORINA_CNFG12,
KORINA_CNFG13, KORINA_CNFG14, KORINA_CNFG15, KORINA_CNFG16,
KORINA_CNFG17, KORINA_CNFG18, KORINA_CNFG19, KORINA_CNFG20,
KORINA_CNFG21, KORINA_CNFG22, KORINA_CNFG23, KORINA_CNFG24
};
static struct resource rc32434_res_pci_mem1;
static struct resource rc32434_res_pci_mem2;
static struct resource rc32434_res_pci_mem1 = {
.name = "PCI MEM1",
.start = 0x50000000,
.end = 0x5FFFFFFF,
.flags = IORESOURCE_MEM,
.parent = &rc32434_res_pci_mem1,
.sibling = NULL,
.child = &rc32434_res_pci_mem2
};
static struct resource rc32434_res_pci_mem2 = {
.name = "PCI Mem2",
.start = 0x60000000,
.end = 0x6FFFFFFF,
.flags = IORESOURCE_MEM,
.parent = &rc32434_res_pci_mem1,
.sibling = NULL,
.child = NULL
};
static struct resource rc32434_res_pci_io1 = {
.name = "PCI I/O1",
.start = 0x18800000,
.end = 0x188FFFFF,
.flags = IORESOURCE_IO,
};
extern struct pci_ops rc32434_pci_ops;
#define PCI_MEM1_START PCI_ADDR_START
#define PCI_MEM1_END PCI_ADDR_START + CPUTOPCI_MEM_WIN - 1
#define PCI_MEM2_START PCI_ADDR_START + CPUTOPCI_MEM_WIN
#define PCI_MEM2_END PCI_ADDR_START + ( 2* CPUTOPCI_MEM_WIN) - 1
#define PCI_IO1_START PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN)
#define PCI_IO1_END PCI_ADDR_START + (2* CPUTOPCI_MEM_WIN) + CPUTOPCI_IO_WIN -1
#define PCI_IO2_START PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) + CPUTOPCI_IO_WIN
#define PCI_IO2_END PCI_ADDR_START + (2* CPUTOPCI_MEM_WIN) + (2 * CPUTOPCI_IO_WIN) -1
struct pci_controller rc32434_controller2;
struct pci_controller rc32434_controller = {
.pci_ops = &rc32434_pci_ops,
.mem_resource = &rc32434_res_pci_mem1,
.io_resource = &rc32434_res_pci_io1,
.mem_offset = 0,
.io_offset = 0,
};
#ifdef __MIPSEB__
#define PCI_ENDIAN_FLAG PCILBAC_sb_m
#else
#define PCI_ENDIAN_FLAG 0
#endif
static int __init rc32434_pcibridge_init(void)
{
unsigned int pcicValue, pcicData = 0;
unsigned int dummyRead, pciCntlVal;
int loopCount;
unsigned int pciConfigAddr;
pcicValue = rc32434_pci->pcic;
pcicValue = (pcicValue >> PCIM_SHFT) & PCIM_BIT_LEN;
if (!((pcicValue == PCIM_H_EA) ||
(pcicValue == PCIM_H_IA_FIX) ||
(pcicValue == PCIM_H_IA_RR))) {
printk("PCI init error!!!\n");
/* Not in Host Mode, return ERROR */
return -1;
}
/* Enables the Idle Grant mode, Arbiter Parking */
pcicData |=(PCIC_igm_m|PCIC_eap_m|PCIC_en_m);
rc32434_pci->pcic = pcicData; /* Enable the PCI bus Interface */
/* Zero out the PCI status & PCI Status Mask */
for(;;)
{
pcicData = rc32434_pci->pcis;
if (!(pcicData & PCIS_rip_m))
break;
}
rc32434_pci->pcis = 0;
rc32434_pci->pcism = 0xFFFFFFFF;
/* Zero out the PCI decoupled registers */
rc32434_pci->pcidac=0; /* disable PCI decoupled accesses at initialization */
rc32434_pci->pcidas=0; /* clear the status */
rc32434_pci->pcidasm=0x0000007F; /* Mask all the interrupts */
/* Mask PCI Messaging Interrupts */
rc32434_pci_msg->pciiic = 0;
rc32434_pci_msg->pciiim = 0xFFFFFFFF;
rc32434_pci_msg->pciioic = 0;
rc32434_pci_msg->pciioim = 0;
/* Setup PCILB0 as Memory Window */
rc32434_pci->pcilba[0].a = (unsigned int) (PCI_ADDR_START);
/* setup the PCI map address as same as the local address */
rc32434_pci->pcilba[0].m = (unsigned int) (PCI_ADDR_START);
/* Setup PCILBA1 as MEM */
rc32434_pci->pcilba[0].c = ( ((SIZE_256MB & 0x1f) << PCILBAC_size_b) | PCI_ENDIAN_FLAG);
dummyRead = rc32434_pci->pcilba[0].c; /* flush the CPU write Buffers */
rc32434_pci->pcilba[1].a = 0x60000000;
rc32434_pci->pcilba[1].m = 0x60000000;
/* setup PCILBA2 as IO Window*/
rc32434_pci->pcilba[1].c = (((SIZE_256MB & 0x1f) << PCILBAC_size_b )| PCI_ENDIAN_FLAG);
dummyRead = rc32434_pci->pcilba[1].c; /* flush the CPU write Buffers */
rc32434_pci->pcilba[2].a = 0x18C00000;
rc32434_pci->pcilba[2].m = 0x18FFFFFF;
/* setup PCILBA2 as IO Window*/
rc32434_pci->pcilba[2].c = (((SIZE_4MB & 0x1f) << PCILBAC_size_b) | PCI_ENDIAN_FLAG );
dummyRead = rc32434_pci->pcilba[2].c; /* flush the CPU write Buffers */
/* Setup PCILBA3 as IO Window */
rc32434_pci->pcilba[3].a = 0x18800000;
rc32434_pci->pcilba[3].m = 0x18800000;
rc32434_pci->pcilba[3].c = ( (((SIZE_1MB & 0x1ff) << PCILBAC_size_b) | PCILBAC_msi_m) | PCI_ENDIAN_FLAG);
dummyRead = rc32434_pci->pcilba[3].c; /* flush the CPU write Buffers */
pciConfigAddr=(unsigned int)(0x80000004);
for(loopCount=0;loopCount<24;loopCount++){
rc32434_pci->pcicfga=pciConfigAddr;
dummyRead=rc32434_pci->pcicfga;
rc32434_pci->pcicfgd = korinaCnfgRegs[loopCount];
dummyRead=rc32434_pci->pcicfgd;
pciConfigAddr += 4;
}
rc32434_pci->pcitc = (unsigned int)((PCITC_RTIMER_VAL&0xff) << PCITC_rtimer_b)
| ((PCITC_DTIMER_VAL&0xff) << PCITC_dtimer_b);
pciCntlVal=rc32434_pci->pcic;
pciCntlVal &=~(PCIC_tnr_m);
rc32434_pci->pcic = pciCntlVal;
pciCntlVal=rc32434_pci->pcic;
return 0;
}
/* Do platform specific device initialization at pci_enable_device() time */
int pcibios_plat_dev_init(struct pci_dev *dev)
{
if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) {
/* disable prefetched memory range */
pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0);
pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10);
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
}
return 0;
}
static int __init rc32434_pci_init(void)
{
printk("PCI: Initializing PCI\n");
ioport_resource.start = rc32434_res_pci_io1.start;
ioport_resource.end = rc32434_res_pci_io1.end;
rc32434_pcibridge_init();
register_pci_controller(&rc32434_controller);
rc32434_sync();
}
arch_initcall(rc32434_pci_init);
|
