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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/slab.h>
27#include <linux/delay.h>
28
29#include <asm/io.h>
30#include <asm/irq.h>
31#include <asm/pgtable.h>
32#include <asm/page.h>
33#include <asm/system.h>
34#include <asm/hardware.h>
35#include <asm/mach-types.h>
36
37#include <asm/mach/pci.h>
38#include <asm/mach/map.h>
39#include <asm/mach/irq.h>
40#include <asm/mach/time.h>
41#include <asm/mach/flash.h>
42#include <asm/mach/arch.h>
43
44
45
46
47
48static void __init ixdp2800_timer_init(void)
49{
50 ixp2000_init_time(50000000);
51}
52
53static struct sys_timer ixdp2800_timer = {
54 .init = ixdp2800_timer_init,
55 .offset = ixp2000_gettimeoffset,
56};
57
58
59
60
61static void __init ixdp2800_slave_disable_pci_master(void)
62{
63 *IXP2000_PCI_CMDSTAT &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
64}
65
66static void __init ixdp2800_master_wait_for_slave(void)
67{
68 volatile u32 *addr;
69
70 printk(KERN_INFO "IXDP2800: waiting for slave NPU to configure "
71 "its BAR sizes\n");
72
73 addr = ixp2000_pci_config_addr(0, IXDP2X00_SLAVE_NPU_DEVFN,
74 PCI_BASE_ADDRESS_1);
75 do {
76 *addr = 0xffffffff;
77 cpu_relax();
78 } while (*addr != 0xfe000008);
79
80 addr = ixp2000_pci_config_addr(0, IXDP2X00_SLAVE_NPU_DEVFN,
81 PCI_BASE_ADDRESS_2);
82 do {
83 *addr = 0xffffffff;
84 cpu_relax();
85 } while (*addr != 0xc0000008);
86
87
88
89
90 *addr = 0x40000008;
91}
92
93static void __init ixdp2800_slave_wait_for_master_enable(void)
94{
95 printk(KERN_INFO "IXDP2800: waiting for master NPU to enable us\n");
96
97 while ((*IXP2000_PCI_CMDSTAT & PCI_COMMAND_MASTER) == 0)
98 cpu_relax();
99}
100
101void __init ixdp2800_pci_preinit(void)
102{
103 printk("ixdp2x00_pci_preinit called\n");
104
105 *IXP2000_PCI_ADDR_EXT = 0x0001e000;
106
107 if (!ixdp2x00_master_npu())
108 ixdp2800_slave_disable_pci_master();
109
110 *IXP2000_PCI_SRAM_BASE_ADDR_MASK = (0x2000000 - 1) & ~0x3ffff;
111 *IXP2000_PCI_DRAM_BASE_ADDR_MASK = (0x40000000 - 1) & ~0xfffff;
112
113 ixp2000_pci_preinit();
114
115 if (ixdp2x00_master_npu()) {
116
117
118
119
120
121 ixdp2800_master_wait_for_slave();
122
123
124
125
126
127
128 *IXP2000_PCI_SDRAM_BAR = 0x00000008;
129 } else {
130
131
132
133
134
135
136 ixdp2800_slave_wait_for_master_enable();
137 pcibios_setup("firmware");
138 }
139}
140
141
142
143
144
145
146static void __devinit ixp2800_pci_fixup(struct pci_dev *dev)
147{
148 if (machine_is_ixdp2800()) {
149 dev->resource[2].start = 0;
150 dev->resource[2].end = 0;
151 dev->resource[2].flags = 0;
152 }
153}
154DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IXP2800, ixp2800_pci_fixup);
155
156static int __init ixdp2800_pci_setup(int nr, struct pci_sys_data *sys)
157{
158 sys->mem_offset = 0x00000000;
159
160 ixp2000_pci_setup(nr, sys);
161
162 return 1;
163}
164
165static int __init ixdp2800_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
166{
167 if (ixdp2x00_master_npu()) {
168
169
170
171
172
173 if(!dev->bus->self) {
174 if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
175 return IRQ_IXDP2800_INGRESS_NPU;
176
177 return -1;
178 }
179
180
181
182
183 if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
184 dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
185 !dev->bus->parent->self->bus->parent)
186 return IRQ_IXDP2800_PMC;
187
188
189
190
191 if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
192 switch(dev->devfn) {
193 case IXDP2X00_PMC_DEVFN:
194 return IRQ_IXDP2800_PMC;
195
196 case IXDP2800_MASTER_ENET_DEVFN:
197 return IRQ_IXDP2800_EGRESS_ENET;
198
199 case IXDP2800_SWITCH_FABRIC_DEVFN:
200 return IRQ_IXDP2800_FABRIC;
201 }
202 }
203
204 return -1;
205 } else return IRQ_IXP2000_PCIB;
206}
207
208static void __init ixdp2800_master_enable_slave(void)
209{
210 volatile u32 *addr;
211
212 printk(KERN_INFO "IXDP2800: enabling slave NPU\n");
213
214 addr = (volatile u32 *)ixp2000_pci_config_addr(0,
215 IXDP2X00_SLAVE_NPU_DEVFN,
216 PCI_COMMAND);
217
218 *addr |= PCI_COMMAND_MASTER;
219}
220
221static void __init ixdp2800_master_wait_for_slave_bus_scan(void)
222{
223 volatile u32 *addr;
224
225 printk(KERN_INFO "IXDP2800: waiting for slave to finish bus scan\n");
226
227 addr = (volatile u32 *)ixp2000_pci_config_addr(0,
228 IXDP2X00_SLAVE_NPU_DEVFN,
229 PCI_COMMAND);
230 while ((*addr & PCI_COMMAND_MEMORY) == 0)
231 cpu_relax();
232}
233
234static void __init ixdp2800_slave_signal_bus_scan_completion(void)
235{
236 printk(KERN_INFO "IXDP2800: bus scan done, signaling master\n");
237 *IXP2000_PCI_CMDSTAT |= PCI_COMMAND_MEMORY;
238}
239
240static void __init ixdp2800_pci_postinit(void)
241{
242 if (!ixdp2x00_master_npu()) {
243 ixdp2x00_slave_pci_postinit();
244 ixdp2800_slave_signal_bus_scan_completion();
245 }
246}
247
248struct __initdata hw_pci ixdp2800_pci __initdata = {
249 .nr_controllers = 1,
250 .setup = ixdp2800_pci_setup,
251 .preinit = ixdp2800_pci_preinit,
252 .postinit = ixdp2800_pci_postinit,
253 .scan = ixp2000_pci_scan_bus,
254 .map_irq = ixdp2800_pci_map_irq,
255};
256
257int __init ixdp2800_pci_init(void)
258{
259 if (machine_is_ixdp2800()) {
260 struct pci_dev *dev;
261
262 pci_common_init(&ixdp2800_pci);
263 if (ixdp2x00_master_npu()) {
264 dev = pci_get_bus_and_slot(1, IXDP2800_SLAVE_ENET_DEVFN);
265 pci_remove_bus_device(dev);
266 pci_dev_put(dev);
267
268 ixdp2800_master_enable_slave();
269 ixdp2800_master_wait_for_slave_bus_scan();
270 } else {
271 dev = pci_get_bus_and_slot(1, IXDP2800_MASTER_ENET_DEVFN);
272 pci_remove_bus_device(dev);
273 pci_dev_put(dev);
274 }
275 }
276
277 return 0;
278}
279
280subsys_initcall(ixdp2800_pci_init);
281
282void __init ixdp2800_init_irq(void)
283{
284 ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2800_NR_IRQS);
285}
286
287MACHINE_START(IXDP2800, "Intel IXDP2800 Development Platform")
288
289 .phys_io = IXP2000_UART_PHYS_BASE,
290 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
291 .boot_params = 0x00000100,
292 .map_io = ixdp2x00_map_io,
293 .init_irq = ixdp2800_init_irq,
294 .timer = &ixdp2800_timer,
295 .init_machine = ixdp2x00_init_machine,
296MACHINE_END
297
298
