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18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/mm.h>
21#include <linux/sched.h>
22#include <linux/interrupt.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#include <linux/serial.h>
29#include <linux/tty.h>
30#include <linux/serial_core.h>
31#include <linux/platform_device.h>
32#include <linux/serial_8250.h>
33
34#include <asm/io.h>
35#include <asm/irq.h>
36#include <asm/pgtable.h>
37#include <asm/page.h>
38#include <asm/system.h>
39#include <asm/hardware.h>
40#include <asm/mach-types.h>
41
42#include <asm/mach/pci.h>
43#include <asm/mach/map.h>
44#include <asm/mach/irq.h>
45#include <asm/mach/time.h>
46#include <asm/mach/arch.h>
47#include <asm/mach/flash.h>
48
49
50
51
52static void ixdp2x01_irq_mask(unsigned int irq)
53{
54 ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG,
55 IXP2000_BOARD_IRQ_MASK(irq));
56}
57
58static void ixdp2x01_irq_unmask(unsigned int irq)
59{
60 ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
61 IXP2000_BOARD_IRQ_MASK(irq));
62}
63
64static u32 valid_irq_mask;
65
66static void ixdp2x01_irq_handler(unsigned int irq, struct irq_desc *desc)
67{
68 u32 ex_interrupt;
69 int i;
70
71 desc->chip->mask(irq);
72
73 ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;
74
75 if (!ex_interrupt) {
76 printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
77 return;
78 }
79
80 for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
81 if (ex_interrupt & (1 << i)) {
82 struct irq_desc *cpld_desc;
83 int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
84 cpld_desc = irq_desc + cpld_irq;
85 desc_handle_irq(cpld_irq, cpld_desc);
86 }
87 }
88
89 desc->chip->unmask(irq);
90}
91
92static struct irq_chip ixdp2x01_irq_chip = {
93 .mask = ixdp2x01_irq_mask,
94 .ack = ixdp2x01_irq_mask,
95 .unmask = ixdp2x01_irq_unmask
96};
97
98
99
100
101
102
103void __init ixdp2x01_init_irq(void)
104{
105 int irq = 0;
106
107
108 ixp2000_init_irq();
109
110 if (machine_is_ixdp2401())
111 valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
112 else
113 valid_irq_mask = IXDP2801_VALID_IRQ_MASK;
114
115
116 ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
117 ixp2000_reg_wrb(IXDP2X01_INT_SIM_REG, 0);
118
119 for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
120 if (irq & valid_irq_mask) {
121 set_irq_chip(irq, &ixdp2x01_irq_chip);
122 set_irq_handler(irq, handle_level_irq);
123 set_irq_flags(irq, IRQF_VALID);
124 } else {
125 set_irq_flags(irq, 0);
126 }
127 }
128
129
130 set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x01_irq_handler);
131}
132
133
134
135
136
137static struct map_desc ixdp2x01_io_desc __initdata = {
138 .virtual = IXDP2X01_VIRT_CPLD_BASE,
139 .pfn = __phys_to_pfn(IXDP2X01_PHYS_CPLD_BASE),
140 .length = IXDP2X01_CPLD_REGION_SIZE,
141 .type = MT_DEVICE
142};
143
144static void __init ixdp2x01_map_io(void)
145{
146 ixp2000_map_io();
147 iotable_init(&ixdp2x01_io_desc, 1);
148}
149
150
151
152
153
154static struct plat_serial8250_port ixdp2x01_serial_port1[] = {
155 {
156 .mapbase = (unsigned long)IXDP2X01_UART1_PHYS_BASE,
157 .membase = (char *)IXDP2X01_UART1_VIRT_BASE,
158 .irq = IRQ_IXDP2X01_UART1,
159 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
160 .iotype = UPIO_MEM32,
161 .regshift = 2,
162 .uartclk = IXDP2X01_UART_CLK,
163 },
164 { }
165};
166
167static struct resource ixdp2x01_uart_resource1 = {
168 .start = IXDP2X01_UART1_PHYS_BASE,
169 .end = IXDP2X01_UART1_PHYS_BASE + 0xffff,
170 .flags = IORESOURCE_MEM,
171};
172
173static struct platform_device ixdp2x01_serial_device1 = {
174 .name = "serial8250",
175 .id = PLAT8250_DEV_PLATFORM1,
176 .dev = {
177 .platform_data = ixdp2x01_serial_port1,
178 },
179 .num_resources = 1,
180 .resource = &ixdp2x01_uart_resource1,
181};
182
183static struct plat_serial8250_port ixdp2x01_serial_port2[] = {
184 {
185 .mapbase = (unsigned long)IXDP2X01_UART2_PHYS_BASE,
186 .membase = (char *)IXDP2X01_UART2_VIRT_BASE,
187 .irq = IRQ_IXDP2X01_UART2,
188 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
189 .iotype = UPIO_MEM32,
190 .regshift = 2,
191 .uartclk = IXDP2X01_UART_CLK,
192 },
193 { }
194};
195
196static struct resource ixdp2x01_uart_resource2 = {
197 .start = IXDP2X01_UART2_PHYS_BASE,
198 .end = IXDP2X01_UART2_PHYS_BASE + 0xffff,
199 .flags = IORESOURCE_MEM,
200};
201
202static struct platform_device ixdp2x01_serial_device2 = {
203 .name = "serial8250",
204 .id = PLAT8250_DEV_PLATFORM2,
205 .dev = {
206 .platform_data = ixdp2x01_serial_port2,
207 },
208 .num_resources = 1,
209 .resource = &ixdp2x01_uart_resource2,
210};
211
212static void ixdp2x01_uart_init(void)
213{
214 platform_device_register(&ixdp2x01_serial_device1);
215 platform_device_register(&ixdp2x01_serial_device2);
216}
217
218
219
220
221
222static unsigned int ixdp2x01_clock;
223
224static int __init ixdp2x01_clock_setup(char *str)
225{
226 ixdp2x01_clock = simple_strtoul(str, NULL, 10);
227
228 return 1;
229}
230
231__setup("ixdp2x01_clock=", ixdp2x01_clock_setup);
232
233static void __init ixdp2x01_timer_init(void)
234{
235 if (!ixdp2x01_clock)
236 ixdp2x01_clock = 50000000;
237
238 ixp2000_init_time(ixdp2x01_clock);
239}
240
241static struct sys_timer ixdp2x01_timer = {
242 .init = ixdp2x01_timer_init,
243 .offset = ixp2000_gettimeoffset,
244};
245
246
247
248
249void __init ixdp2x01_pci_preinit(void)
250{
251 ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
252 ixp2000_pci_preinit();
253 pcibios_setup("firmware");
254}
255
256#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
257
258static int __init ixdp2x01_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
259{
260 u8 bus = dev->bus->number;
261 u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
262 struct pci_bus *tmp_bus = dev->bus;
263
264
265 if (bus == 0) {
266 return -1;
267 }
268
269
270 while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL)) {
271 tmp_bus = tmp_bus->parent;
272 }
273
274
275 switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
276
277 case 0x0008:
278 if (tmp_bus == dev->bus) {
279
280 switch (devpin) {
281 case DEVPIN(1, 1):
282 if (machine_is_ixdp2401())
283 return IRQ_IXDP2401_INTA_82546;
284 return -1;
285 case DEVPIN(1, 2):
286 if (machine_is_ixdp2401())
287 return IRQ_IXDP2401_INTB_82546;
288 return -1;
289 case DEVPIN(0, 1):
290 return IRQ_IXDP2X01_SPCI_PMC_INTA;
291 case DEVPIN(0, 2):
292 return IRQ_IXDP2X01_SPCI_PMC_INTB;
293 case DEVPIN(0, 3):
294 return IRQ_IXDP2X01_SPCI_PMC_INTC;
295 case DEVPIN(0, 4):
296 return IRQ_IXDP2X01_SPCI_PMC_INTD;
297 }
298 }
299 break;
300 case 0x0010:
301 if (tmp_bus == dev->bus) {
302
303
304 switch (devpin) {
305 case DEVPIN(0, 1):
306 return IRQ_IXDP2X01_SPCI_DB_0;
307 case DEVPIN(1, 1):
308 return IRQ_IXDP2X01_SPCI_DB_1;
309 }
310 } else {
311
312
313 }
314 break;
315 }
316
317 return -1;
318}
319
320
321static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
322{
323 sys->mem_offset = 0xe0000000;
324
325 if (machine_is_ixdp2801() || machine_is_ixdp28x5())
326 sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);
327
328 return ixp2000_pci_setup(nr, sys);
329}
330
331struct hw_pci ixdp2x01_pci __initdata = {
332 .nr_controllers = 1,
333 .setup = ixdp2x01_pci_setup,
334 .preinit = ixdp2x01_pci_preinit,
335 .scan = ixp2000_pci_scan_bus,
336 .map_irq = ixdp2x01_pci_map_irq,
337};
338
339int __init ixdp2x01_pci_init(void)
340{
341 if (machine_is_ixdp2401() || machine_is_ixdp2801() ||\
342 machine_is_ixdp28x5())
343 pci_common_init(&ixdp2x01_pci);
344
345 return 0;
346}
347
348subsys_initcall(ixdp2x01_pci_init);
349
350
351
352
353static struct flash_platform_data ixdp2x01_flash_platform_data = {
354 .map_name = "cfi_probe",
355 .width = 1,
356};
357
358static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
359{
360 ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
361 ((ofs >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN));
362 return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
363}
364
365static struct ixp2000_flash_data ixdp2x01_flash_data = {
366 .platform_data = &ixdp2x01_flash_platform_data,
367 .bank_setup = ixdp2x01_flash_bank_setup
368};
369
370static struct resource ixdp2x01_flash_resource = {
371 .start = 0xc4000000,
372 .end = 0xc4000000 + 0x01ffffff,
373 .flags = IORESOURCE_MEM,
374};
375
376static struct platform_device ixdp2x01_flash = {
377 .name = "IXP2000-Flash",
378 .id = 0,
379 .dev = {
380 .platform_data = &ixdp2x01_flash_data,
381 },
382 .num_resources = 1,
383 .resource = &ixdp2x01_flash_resource,
384};
385
386static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
387 .sda_pin = IXDP2X01_GPIO_SDA,
388 .scl_pin = IXDP2X01_GPIO_SCL,
389};
390
391static struct platform_device ixdp2x01_i2c_controller = {
392 .name = "IXP2000-I2C",
393 .id = 0,
394 .dev = {
395 .platform_data = &ixdp2x01_i2c_gpio_pins,
396 },
397 .num_resources = 0
398};
399
400static struct platform_device *ixdp2x01_devices[] __initdata = {
401 &ixdp2x01_flash,
402 &ixdp2x01_i2c_controller
403};
404
405static void __init ixdp2x01_init_machine(void)
406{
407 ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
408 (IXDP2X01_CPLD_FLASH_BANK_MASK | IXDP2X01_CPLD_FLASH_INTERN));
409
410 ixdp2x01_flash_data.nr_banks =
411 ((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);
412
413 platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
414 ixp2000_uart_init();
415 ixdp2x01_uart_init();
416}
417
418
419#ifdef CONFIG_ARCH_IXDP2401
420MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
421
422 .phys_io = IXP2000_UART_PHYS_BASE,
423 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
424 .boot_params = 0x00000100,
425 .map_io = ixdp2x01_map_io,
426 .init_irq = ixdp2x01_init_irq,
427 .timer = &ixdp2x01_timer,
428 .init_machine = ixdp2x01_init_machine,
429MACHINE_END
430#endif
431
432#ifdef CONFIG_ARCH_IXDP2801
433MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
434
435 .phys_io = IXP2000_UART_PHYS_BASE,
436 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
437 .boot_params = 0x00000100,
438 .map_io = ixdp2x01_map_io,
439 .init_irq = ixdp2x01_init_irq,
440 .timer = &ixdp2x01_timer,
441 .init_machine = ixdp2x01_init_machine,
442MACHINE_END
443
444
445
446
447
448MACHINE_START(IXDP28X5, "Intel IXDP2805/2855 Development Platform")
449
450 .phys_io = IXP2000_UART_PHYS_BASE,
451 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
452 .boot_params = 0x00000100,
453 .map_io = ixdp2x01_map_io,
454 .init_irq = ixdp2x01_init_irq,
455 .timer = &ixdp2x01_timer,
456 .init_machine = ixdp2x01_init_machine,
457MACHINE_END
458#endif
459
460
461
