aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ixp2000/ixdp2800.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ixp2000/ixdp2800.c')
-rw-r--r--arch/arm/mach-ixp2000/ixdp2800.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/arch/arm/mach-ixp2000/ixdp2800.c b/arch/arm/mach-ixp2000/ixdp2800.c
deleted file mode 100644
index a9f1819ea049..000000000000
--- a/arch/arm/mach-ixp2000/ixdp2800.c
+++ /dev/null
@@ -1,295 +0,0 @@
1/*
2 * arch/arm/mach-ixp2000/ixdp2800.c
3 *
4 * IXDP2800 platform support
5 *
6 * Original Author: Jeffrey Daly <jeffrey.daly@intel.com>
7 * Maintainer: Deepak Saxena <dsaxena@plexity.net>
8 *
9 * Copyright (C) 2002 Intel Corp.
10 * Copyright (C) 2003-2004 MontaVista Software, Inc.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/mm.h>
20#include <linux/sched.h>
21#include <linux/interrupt.h>
22#include <linux/device.h>
23#include <linux/bitops.h>
24#include <linux/pci.h>
25#include <linux/ioport.h>
26#include <linux/delay.h>
27#include <linux/io.h>
28
29#include <asm/irq.h>
30#include <asm/pgtable.h>
31#include <asm/page.h>
32#include <mach/hardware.h>
33#include <asm/mach-types.h>
34
35#include <asm/mach/pci.h>
36#include <asm/mach/map.h>
37#include <asm/mach/irq.h>
38#include <asm/mach/time.h>
39#include <asm/mach/flash.h>
40#include <asm/mach/arch.h>
41
42/*************************************************************************
43 * IXDP2800 timer tick
44 *************************************************************************/
45
46static void __init ixdp2800_timer_init(void)
47{
48 ixp2000_init_time(50000000);
49}
50
51static struct sys_timer ixdp2800_timer = {
52 .init = ixdp2800_timer_init,
53 .offset = ixp2000_gettimeoffset,
54};
55
56/*************************************************************************
57 * IXDP2800 PCI
58 *************************************************************************/
59static void __init ixdp2800_slave_disable_pci_master(void)
60{
61 *IXP2000_PCI_CMDSTAT &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
62}
63
64static void __init ixdp2800_master_wait_for_slave(void)
65{
66 volatile u32 *addr;
67
68 printk(KERN_INFO "IXDP2800: waiting for slave NPU to configure "
69 "its BAR sizes\n");
70
71 addr = ixp2000_pci_config_addr(0, IXDP2X00_SLAVE_NPU_DEVFN,
72 PCI_BASE_ADDRESS_1);
73 do {
74 *addr = 0xffffffff;
75 cpu_relax();
76 } while (*addr != 0xfe000008);
77
78 addr = ixp2000_pci_config_addr(0, IXDP2X00_SLAVE_NPU_DEVFN,
79 PCI_BASE_ADDRESS_2);
80 do {
81 *addr = 0xffffffff;
82 cpu_relax();
83 } while (*addr != 0xc0000008);
84
85 /*
86 * Configure the slave's SDRAM BAR by hand.
87 */
88 *addr = 0x40000008;
89}
90
91static void __init ixdp2800_slave_wait_for_master_enable(void)
92{
93 printk(KERN_INFO "IXDP2800: waiting for master NPU to enable us\n");
94
95 while ((*IXP2000_PCI_CMDSTAT & PCI_COMMAND_MASTER) == 0)
96 cpu_relax();
97}
98
99void __init ixdp2800_pci_preinit(void)
100{
101 printk("ixdp2x00_pci_preinit called\n");
102
103 *IXP2000_PCI_ADDR_EXT = 0x0001e000;
104
105 if (!ixdp2x00_master_npu())
106 ixdp2800_slave_disable_pci_master();
107
108 *IXP2000_PCI_SRAM_BASE_ADDR_MASK = (0x2000000 - 1) & ~0x3ffff;
109 *IXP2000_PCI_DRAM_BASE_ADDR_MASK = (0x40000000 - 1) & ~0xfffff;
110
111 ixp2000_pci_preinit();
112
113 if (ixdp2x00_master_npu()) {
114 /*
115 * Wait until the slave set its SRAM/SDRAM BAR sizes
116 * correctly before we proceed to scan and enumerate
117 * the bus.
118 */
119 ixdp2800_master_wait_for_slave();
120
121 /*
122 * We configure the SDRAM BARs by hand because they
123 * are 1G and fall outside of the regular allocated
124 * PCI address space.
125 */
126 *IXP2000_PCI_SDRAM_BAR = 0x00000008;
127 } else {
128 /*
129 * Wait for the master to complete scanning the bus
130 * and assigning resources before we proceed to scan
131 * the bus ourselves. Set pci=firmware to honor the
132 * master's resource assignment.
133 */
134 ixdp2800_slave_wait_for_master_enable();
135 pcibios_setup("firmware");
136 }
137}
138
139/*
140 * We assign the SDRAM BARs for the two IXP2800 CPUs by hand, outside
141 * of the regular PCI window, because there's only 512M of outbound PCI
142 * memory window on each IXP, while we need 1G for each of the BARs.
143 */
144static void __devinit ixp2800_pci_fixup(struct pci_dev *dev)
145{
146 if (machine_is_ixdp2800()) {
147 dev->resource[2].start = 0;
148 dev->resource[2].end = 0;
149 dev->resource[2].flags = 0;
150 }
151}
152DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IXP2800, ixp2800_pci_fixup);
153
154static int __init ixdp2800_pci_setup(int nr, struct pci_sys_data *sys)
155{
156 sys->mem_offset = 0x00000000;
157
158 ixp2000_pci_setup(nr, sys);
159
160 return 1;
161}
162
163static int __init ixdp2800_pci_map_irq(const struct pci_dev *dev, u8 slot,
164 u8 pin)
165{
166 if (ixdp2x00_master_npu()) {
167
168 /*
169 * Root bus devices. Slave NPU is only one with interrupt.
170 * Everything else, we just return -1 which is invalid.
171 */
172 if(!dev->bus->self) {
173 if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
174 return IRQ_IXDP2800_INGRESS_NPU;
175
176 return -1;
177 }
178
179 /*
180 * Bridge behind the PMC slot.
181 */
182 if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
183 dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
184 !dev->bus->parent->self->bus->parent)
185 return IRQ_IXDP2800_PMC;
186
187 /*
188 * Device behind the first bridge
189 */
190 if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
191 switch(dev->devfn) {
192 case IXDP2X00_PMC_DEVFN:
193 return IRQ_IXDP2800_PMC;
194
195 case IXDP2800_MASTER_ENET_DEVFN:
196 return IRQ_IXDP2800_EGRESS_ENET;
197
198 case IXDP2800_SWITCH_FABRIC_DEVFN:
199 return IRQ_IXDP2800_FABRIC;
200 }
201 }
202
203 return -1;
204 } else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
205}
206
207static void __init ixdp2800_master_enable_slave(void)
208{
209 volatile u32 *addr;
210
211 printk(KERN_INFO "IXDP2800: enabling slave NPU\n");
212
213 addr = (volatile u32 *)ixp2000_pci_config_addr(0,
214 IXDP2X00_SLAVE_NPU_DEVFN,
215 PCI_COMMAND);
216
217 *addr |= PCI_COMMAND_MASTER;
218}
219
220static void __init ixdp2800_master_wait_for_slave_bus_scan(void)
221{
222 volatile u32 *addr;
223
224 printk(KERN_INFO "IXDP2800: waiting for slave to finish bus scan\n");
225
226 addr = (volatile u32 *)ixp2000_pci_config_addr(0,
227 IXDP2X00_SLAVE_NPU_DEVFN,
228 PCI_COMMAND);
229 while ((*addr & PCI_COMMAND_MEMORY) == 0)
230 cpu_relax();
231}
232
233static void __init ixdp2800_slave_signal_bus_scan_completion(void)
234{
235 printk(KERN_INFO "IXDP2800: bus scan done, signaling master\n");
236 *IXP2000_PCI_CMDSTAT |= PCI_COMMAND_MEMORY;
237}
238
239static void __init ixdp2800_pci_postinit(void)
240{
241 if (!ixdp2x00_master_npu()) {
242 ixdp2x00_slave_pci_postinit();
243 ixdp2800_slave_signal_bus_scan_completion();
244 }
245}
246
247struct __initdata hw_pci ixdp2800_pci __initdata = {
248 .nr_controllers = 1,
249 .setup = ixdp2800_pci_setup,
250 .preinit = ixdp2800_pci_preinit,
251 .postinit = ixdp2800_pci_postinit,
252 .scan = ixp2000_pci_scan_bus,
253 .map_irq = ixdp2800_pci_map_irq,
254};
255
256int __init ixdp2800_pci_init(void)
257{
258 if (machine_is_ixdp2800()) {
259 struct pci_dev *dev;
260
261 pci_common_init(&ixdp2800_pci);
262 if (ixdp2x00_master_npu()) {
263 dev = pci_get_bus_and_slot(1, IXDP2800_SLAVE_ENET_DEVFN);
264 pci_stop_and_remove_bus_device(dev);
265 pci_dev_put(dev);
266
267 ixdp2800_master_enable_slave();
268 ixdp2800_master_wait_for_slave_bus_scan();
269 } else {
270 dev = pci_get_bus_and_slot(1, IXDP2800_MASTER_ENET_DEVFN);
271 pci_stop_and_remove_bus_device(dev);
272 pci_dev_put(dev);
273 }
274 }
275
276 return 0;
277}
278
279subsys_initcall(ixdp2800_pci_init);
280
281void __init ixdp2800_init_irq(void)
282{
283 ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2800_NR_IRQS);
284}
285
286MACHINE_START(IXDP2800, "Intel IXDP2800 Development Platform")
287 /* Maintainer: MontaVista Software, Inc. */
288 .atag_offset = 0x100,
289 .map_io = ixdp2x00_map_io,
290 .init_irq = ixdp2800_init_irq,
291 .timer = &ixdp2800_timer,
292 .init_machine = ixdp2x00_init_machine,
293 .restart = ixp2000_restart,
294MACHINE_END
295
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-14 03:02:16 -0500