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-rw-r--r--arch/arm/Kconfig11
-rw-r--r--arch/arm/Makefile1
-rw-r--r--arch/arm/mach-ixp23xx/Kconfig25
-rw-r--r--arch/arm/mach-ixp23xx/Makefile11
-rw-r--r--arch/arm/mach-ixp23xx/Makefile.boot2
-rw-r--r--arch/arm/mach-ixp23xx/core.c431
-rw-r--r--arch/arm/mach-ixp23xx/espresso.c69
-rw-r--r--arch/arm/mach-ixp23xx/ixdp2351.c325
-rw-r--r--arch/arm/mach-ixp23xx/pci.c275
-rw-r--r--arch/arm/mach-ixp23xx/roadrunner.c164
10 files changed, 1313 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0dd24ebdf6ac..427c72140110 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -148,6 +148,12 @@ config ARCH_IXP2000
148 help 148 help
149 Support for Intel's IXP2400/2800 (XScale) family of processors. 149 Support for Intel's IXP2400/2800 (XScale) family of processors.
150 150
151config ARCH_IXP23XX
152 bool "IXP23XX-based"
153 select PCI
154 help
155 Support for Intel's IXP23xx (XScale) family of processors.
156
151config ARCH_L7200 157config ARCH_L7200
152 bool "LinkUp-L7200" 158 bool "LinkUp-L7200"
153 select FIQ 159 select FIQ
@@ -269,6 +275,8 @@ source "arch/arm/mach-ixp4xx/Kconfig"
269 275
270source "arch/arm/mach-ixp2000/Kconfig" 276source "arch/arm/mach-ixp2000/Kconfig"
271 277
278source "arch/arm/mach-ixp23xx/Kconfig"
279
272source "arch/arm/mach-pxa/Kconfig" 280source "arch/arm/mach-pxa/Kconfig"
273 281
274source "arch/arm/mach-sa1100/Kconfig" 282source "arch/arm/mach-sa1100/Kconfig"
@@ -787,7 +795,8 @@ source "drivers/acorn/block/Kconfig"
787 795
788if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ 796if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
789 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ 797 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
790 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE 798 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
799 || ARCH_IXP23XX
791source "drivers/ide/Kconfig" 800source "drivers/ide/Kconfig"
792endif 801endif
793 802
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 0f571d3d2fa4..ce3e804ea0f3 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -98,6 +98,7 @@ endif
98 machine-$(CONFIG_ARCH_IOP3XX) := iop3xx 98 machine-$(CONFIG_ARCH_IOP3XX) := iop3xx
99 machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx 99 machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
100 machine-$(CONFIG_ARCH_IXP2000) := ixp2000 100 machine-$(CONFIG_ARCH_IXP2000) := ixp2000
101 machine-$(CONFIG_ARCH_IXP23XX) := ixp23xx
101 machine-$(CONFIG_ARCH_OMAP1) := omap1 102 machine-$(CONFIG_ARCH_OMAP1) := omap1
102 machine-$(CONFIG_ARCH_OMAP2) := omap2 103 machine-$(CONFIG_ARCH_OMAP2) := omap2
103 incdir-$(CONFIG_ARCH_OMAP) := omap 104 incdir-$(CONFIG_ARCH_OMAP) := omap
diff --git a/arch/arm/mach-ixp23xx/Kconfig b/arch/arm/mach-ixp23xx/Kconfig
new file mode 100644
index 000000000000..982670ec3866
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/Kconfig
@@ -0,0 +1,25 @@
1if ARCH_IXP23XX
2
3config ARCH_SUPPORTS_BIG_ENDIAN
4 bool
5 default y
6
7menu "Intel IXP23xx Implementation Options"
8
9comment "IXP23xx Platforms"
10
11config MACH_ESPRESSO
12 bool "Support IP Fabrics Double Espresso platform"
13 help
14
15config MACH_IXDP2351
16 bool "Support Intel IXDP2351 platform"
17 help
18
19config MACH_ROADRUNNER
20 bool "Support ADI RoadRunner platform"
21 help
22
23endmenu
24
25endif
diff --git a/arch/arm/mach-ixp23xx/Makefile b/arch/arm/mach-ixp23xx/Makefile
new file mode 100644
index 000000000000..288b371b6d03
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/Makefile
@@ -0,0 +1,11 @@
1#
2# Makefile for the linux kernel.
3#
4obj-y := core.o pci.o
5obj-m :=
6obj-n :=
7obj- :=
8
9obj-$(CONFIG_MACH_ESPRESSO) += espresso.o
10obj-$(CONFIG_MACH_IXDP2351) += ixdp2351.o
11obj-$(CONFIG_MACH_ROADRUNNER) += roadrunner.o
diff --git a/arch/arm/mach-ixp23xx/Makefile.boot b/arch/arm/mach-ixp23xx/Makefile.boot
new file mode 100644
index 000000000000..d5561ad15bad
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/Makefile.boot
@@ -0,0 +1,2 @@
1 zreladdr-y := 0x00008000
2params_phys-y := 0x00000100
diff --git a/arch/arm/mach-ixp23xx/core.c b/arch/arm/mach-ixp23xx/core.c
new file mode 100644
index 000000000000..092ee12ced42
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/core.c
@@ -0,0 +1,431 @@
1/*
2 * arch/arm/mach-ixp23xx/core.c
3 *
4 * Core routines for IXP23xx chips
5 *
6 * Author: Deepak Saxena <dsaxena@plexity.net>
7 *
8 * Copyright 2005 (c) MontaVista Software, Inc.
9 *
10 * Based on 2.4 code Copyright 2004 (c) Intel Corporation
11 *
12 * This file is licensed under the terms of the GNU General Public
13 * License version 2. This program is licensed "as is" without any
14 * warranty of any kind, whether express or implied.
15 */
16
17#include <linux/config.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/spinlock.h>
21#include <linux/sched.h>
22#include <linux/interrupt.h>
23#include <linux/serial.h>
24#include <linux/tty.h>
25#include <linux/bitops.h>
26#include <linux/serial.h>
27#include <linux/serial_8250.h>
28#include <linux/serial_core.h>
29#include <linux/device.h>
30#include <linux/mm.h>
31#include <linux/time.h>
32#include <linux/timex.h>
33
34#include <asm/types.h>
35#include <asm/setup.h>
36#include <asm/memory.h>
37#include <asm/hardware.h>
38#include <asm/mach-types.h>
39#include <asm/irq.h>
40#include <asm/system.h>
41#include <asm/tlbflush.h>
42#include <asm/pgtable.h>
43
44#include <asm/mach/map.h>
45#include <asm/mach/time.h>
46#include <asm/mach/irq.h>
47#include <asm/mach/arch.h>
48
49
50/*************************************************************************
51 * Chip specific mappings shared by all IXP23xx systems
52 *************************************************************************/
53static struct map_desc ixp23xx_io_desc[] __initdata = {
54 { /* XSI-CPP CSRs */
55 .virtual = IXP23XX_XSI2CPP_CSR_VIRT,
56 .pfn = __phys_to_pfn(IXP23XX_XSI2CPP_CSR_PHYS),
57 .length = IXP23XX_XSI2CPP_CSR_SIZE,
58 .type = MT_DEVICE,
59 }, { /* Expansion Bus Config */
60 .virtual = IXP23XX_EXP_CFG_VIRT,
61 .pfn = __phys_to_pfn(IXP23XX_EXP_CFG_PHYS),
62 .length = IXP23XX_EXP_CFG_SIZE,
63 .type = MT_DEVICE,
64 }, { /* UART, Interrupt ctrl, GPIO, timers, NPEs, MACS,.... */
65 .virtual = IXP23XX_PERIPHERAL_VIRT,
66 .pfn = __phys_to_pfn(IXP23XX_PERIPHERAL_PHYS),
67 .length = IXP23XX_PERIPHERAL_SIZE,
68 .type = MT_DEVICE,
69 }, { /* CAP CSRs */
70 .virtual = IXP23XX_CAP_CSR_VIRT,
71 .pfn = __phys_to_pfn(IXP23XX_CAP_CSR_PHYS),
72 .length = IXP23XX_CAP_CSR_SIZE,
73 .type = MT_DEVICE,
74 }, { /* MSF CSRs */
75 .virtual = IXP23XX_MSF_CSR_VIRT,
76 .pfn = __phys_to_pfn(IXP23XX_MSF_CSR_PHYS),
77 .length = IXP23XX_MSF_CSR_SIZE,
78 .type = MT_DEVICE,
79 }, { /* PCI I/O Space */
80 .virtual = IXP23XX_PCI_IO_VIRT,
81 .pfn = __phys_to_pfn(IXP23XX_PCI_IO_PHYS),
82 .length = IXP23XX_PCI_IO_SIZE,
83 .type = MT_DEVICE,
84 }, { /* PCI Config Space */
85 .virtual = IXP23XX_PCI_CFG_VIRT,
86 .pfn = __phys_to_pfn(IXP23XX_PCI_CFG_PHYS),
87 .length = IXP23XX_PCI_CFG_SIZE,
88 .type = MT_DEVICE,
89 }, { /* PCI local CFG CSRs */
90 .virtual = IXP23XX_PCI_CREG_VIRT,
91 .pfn = __phys_to_pfn(IXP23XX_PCI_CREG_PHYS),
92 .length = IXP23XX_PCI_CREG_SIZE,
93 .type = MT_DEVICE,
94 }, { /* PCI MEM Space */
95 .virtual = IXP23XX_PCI_MEM_VIRT,
96 .pfn = __phys_to_pfn(IXP23XX_PCI_MEM_PHYS),
97 .length = IXP23XX_PCI_MEM_SIZE,
98 .type = MT_DEVICE,
99 }
100};
101
102void __init ixp23xx_map_io(void)
103{
104 iotable_init(ixp23xx_io_desc, ARRAY_SIZE(ixp23xx_io_desc));
105}
106
107
108/***************************************************************************
109 * IXP23xx Interrupt Handling
110 ***************************************************************************/
111enum ixp23xx_irq_type {
112 IXP23XX_IRQ_LEVEL, IXP23XX_IRQ_EDGE
113};
114
115static void ixp23xx_config_irq(unsigned int, enum ixp23xx_irq_type);
116
117static int ixp23xx_irq_set_type(unsigned int irq, unsigned int type)
118{
119 int line = irq - IRQ_IXP23XX_GPIO6 + 6;
120 u32 int_style;
121 enum ixp23xx_irq_type irq_type;
122 volatile u32 *int_reg;
123
124 /*
125 * Only GPIOs 6-15 are wired to interrupts on IXP23xx
126 */
127 if (line < 6 || line > 15)
128 return -EINVAL;
129
130 switch (type) {
131 case IRQT_BOTHEDGE:
132 int_style = IXP23XX_GPIO_STYLE_TRANSITIONAL;
133 irq_type = IXP23XX_IRQ_EDGE;
134 break;
135 case IRQT_RISING:
136 int_style = IXP23XX_GPIO_STYLE_RISING_EDGE;
137 irq_type = IXP23XX_IRQ_EDGE;
138 break;
139 case IRQT_FALLING:
140 int_style = IXP23XX_GPIO_STYLE_FALLING_EDGE;
141 irq_type = IXP23XX_IRQ_EDGE;
142 break;
143 case IRQT_HIGH:
144 int_style = IXP23XX_GPIO_STYLE_ACTIVE_HIGH;
145 irq_type = IXP23XX_IRQ_LEVEL;
146 break;
147 case IRQT_LOW:
148 int_style = IXP23XX_GPIO_STYLE_ACTIVE_LOW;
149 irq_type = IXP23XX_IRQ_LEVEL;
150 break;
151 default:
152 return -EINVAL;
153 }
154
155 ixp23xx_config_irq(irq, irq_type);
156
157 if (line >= 8) { /* pins 8-15 */
158 line -= 8;
159 int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT2R;
160 } else { /* pins 0-7 */
161 int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT1R;
162 }
163
164 /*
165 * Clear pending interrupts
166 */
167 *IXP23XX_GPIO_GPISR = (1 << line);
168
169 /* Clear the style for the appropriate pin */
170 *int_reg &= ~(IXP23XX_GPIO_STYLE_MASK <<
171 (line * IXP23XX_GPIO_STYLE_SIZE));
172
173 /* Set the new style */
174 *int_reg |= (int_style << (line * IXP23XX_GPIO_STYLE_SIZE));
175
176 return 0;
177}
178
179static void ixp23xx_irq_mask(unsigned int irq)
180{
181 volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
182
183 *intr_reg &= ~(1 << (irq % 32));
184}
185
186static void ixp23xx_irq_ack(unsigned int irq)
187{
188 int line = irq - IRQ_IXP23XX_GPIO6 + 6;
189
190 if ((line < 6) || (line > 15))
191 return;
192
193 *IXP23XX_GPIO_GPISR = (1 << line);
194}
195
196/*
197 * Level triggered interrupts on GPIO lines can only be cleared when the
198 * interrupt condition disappears.
199 */
200static void ixp23xx_irq_level_unmask(unsigned int irq)
201{
202 volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
203
204 ixp23xx_irq_ack(irq);
205
206 *intr_reg |= (1 << (irq % 32));
207}
208
209static void ixp23xx_irq_edge_unmask(unsigned int irq)
210{
211 volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
212
213 *intr_reg |= (1 << (irq % 32));
214}
215
216static struct irqchip ixp23xx_irq_level_chip = {
217 .ack = ixp23xx_irq_mask,
218 .mask = ixp23xx_irq_mask,
219 .unmask = ixp23xx_irq_level_unmask,
220 .set_type = ixp23xx_irq_set_type
221};
222
223static struct irqchip ixp23xx_irq_edge_chip = {
224 .ack = ixp23xx_irq_ack,
225 .mask = ixp23xx_irq_mask,
226 .unmask = ixp23xx_irq_edge_unmask,
227 .set_type = ixp23xx_irq_set_type
228};
229
230static void ixp23xx_pci_irq_mask(unsigned int irq)
231{
232 *IXP23XX_PCI_XSCALE_INT_ENABLE &= ~(1 << (IRQ_IXP23XX_INTA + 27 - irq));
233}
234
235static void ixp23xx_pci_irq_unmask(unsigned int irq)
236{
237 *IXP23XX_PCI_XSCALE_INT_ENABLE |= (1 << (IRQ_IXP23XX_INTA + 27 - irq));
238}
239
240/*
241 * TODO: Should this just be done at ASM level?
242 */
243static void pci_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
244{
245 u32 pci_interrupt;
246 unsigned int irqno;
247 struct irqdesc *int_desc;
248
249 pci_interrupt = *IXP23XX_PCI_XSCALE_INT_STATUS;
250
251 desc->chip->ack(irq);
252
253 /* See which PCI_INTA, or PCI_INTB interrupted */
254 if (pci_interrupt & (1 << 26)) {
255 irqno = IRQ_IXP23XX_INTB;
256 } else if (pci_interrupt & (1 << 27)) {
257 irqno = IRQ_IXP23XX_INTA;
258 } else {
259 BUG();
260 }
261
262 int_desc = irq_desc + irqno;
263 int_desc->handle(irqno, int_desc, regs);
264
265 desc->chip->unmask(irq);
266}
267
268static struct irqchip ixp23xx_pci_irq_chip = {
269 .ack = ixp23xx_pci_irq_mask,
270 .mask = ixp23xx_pci_irq_mask,
271 .unmask = ixp23xx_pci_irq_unmask
272};
273
274static void ixp23xx_config_irq(unsigned int irq, enum ixp23xx_irq_type type)
275{
276 switch (type) {
277 case IXP23XX_IRQ_LEVEL:
278 set_irq_chip(irq, &ixp23xx_irq_level_chip);
279 set_irq_handler(irq, do_level_IRQ);
280 break;
281 case IXP23XX_IRQ_EDGE:
282 set_irq_chip(irq, &ixp23xx_irq_edge_chip);
283 set_irq_handler(irq, do_edge_IRQ);
284 break;
285 }
286 set_irq_flags(irq, IRQF_VALID);
287}
288
289void __init ixp23xx_init_irq(void)
290{
291 int irq;
292
293 /* Route everything to IRQ */
294 *IXP23XX_INTR_SEL1 = 0x0;
295 *IXP23XX_INTR_SEL2 = 0x0;
296 *IXP23XX_INTR_SEL3 = 0x0;
297 *IXP23XX_INTR_SEL4 = 0x0;
298
299 /* Mask all sources */
300 *IXP23XX_INTR_EN1 = 0x0;
301 *IXP23XX_INTR_EN2 = 0x0;
302 *IXP23XX_INTR_EN3 = 0x0;
303 *IXP23XX_INTR_EN4 = 0x0;
304
305 /*
306 * Configure all IRQs for level-sensitive operation
307 */
308 for (irq = 0; irq <= NUM_IXP23XX_RAW_IRQS; irq++) {
309 ixp23xx_config_irq(irq, IXP23XX_IRQ_LEVEL);
310 }
311
312 for (irq = IRQ_IXP23XX_INTA; irq <= IRQ_IXP23XX_INTB; irq++) {
313 set_irq_chip(irq, &ixp23xx_pci_irq_chip);
314 set_irq_handler(irq, do_level_IRQ);
315 set_irq_flags(irq, IRQF_VALID);
316 }
317
318 set_irq_chained_handler(IRQ_IXP23XX_PCI_INT_RPH, pci_handler);
319}
320
321
322/*************************************************************************
323 * Timer-tick functions for IXP23xx
324 *************************************************************************/
325#define CLOCK_TICKS_PER_USEC CLOCK_TICK_RATE / (USEC_PER_SEC)
326
327static unsigned long next_jiffy_time;
328
329static unsigned long
330ixp23xx_gettimeoffset(void)
331{
332 unsigned long elapsed;
333
334 elapsed = *IXP23XX_TIMER_CONT - (next_jiffy_time - LATCH);
335
336 return elapsed / CLOCK_TICKS_PER_USEC;
337}
338
339static irqreturn_t
340ixp23xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
341{
342 /* Clear Pending Interrupt by writing '1' to it */
343 *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND;
344 while ((*IXP23XX_TIMER_CONT - next_jiffy_time) > LATCH) {
345 timer_tick(regs);
346 next_jiffy_time += LATCH;
347 }
348
349 return IRQ_HANDLED;
350}
351
352static struct irqaction ixp23xx_timer_irq = {
353 .name = "IXP23xx Timer Tick",
354 .handler = ixp23xx_timer_interrupt,
355 .flags = SA_INTERRUPT | SA_TIMER,
356};
357
358void __init ixp23xx_init_timer(void)
359{
360 /* Clear Pending Interrupt by writing '1' to it */
361 *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND;
362
363 /* Setup the Timer counter value */
364 *IXP23XX_TIMER1_RELOAD =
365 (LATCH & ~IXP23XX_TIMER_RELOAD_MASK) | IXP23XX_TIMER_ENABLE;
366
367 *IXP23XX_TIMER_CONT = 0;
368 next_jiffy_time = LATCH;
369
370 /* Connect the interrupt handler and enable the interrupt */
371 setup_irq(IRQ_IXP23XX_TIMER1, &ixp23xx_timer_irq);
372}
373
374struct sys_timer ixp23xx_timer = {
375 .init = ixp23xx_init_timer,
376 .offset = ixp23xx_gettimeoffset,
377};
378
379
380/*************************************************************************
381 * IXP23xx Platform Initializaion
382 *************************************************************************/
383static struct resource ixp23xx_uart_resources[] = {
384 {
385 .start = IXP23XX_UART1_PHYS,
386 .end = IXP23XX_UART1_PHYS + 0x0fff,
387 .flags = IORESOURCE_MEM
388 }, {
389 .start = IXP23XX_UART2_PHYS,
390 .end = IXP23XX_UART2_PHYS + 0x0fff,
391 .flags = IORESOURCE_MEM
392 }
393};
394
395static struct plat_serial8250_port ixp23xx_uart_data[] = {
396 {
397 .mapbase = IXP23XX_UART1_PHYS,
398 .membase = (char *)(IXP23XX_UART1_VIRT + 3),
399 .irq = IRQ_IXP23XX_UART1,
400 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
401 .iotype = UPIO_MEM,
402 .regshift = 2,
403 .uartclk = IXP23XX_UART_XTAL,
404 }, {
405 .mapbase = IXP23XX_UART2_PHYS,
406 .membase = (char *)(IXP23XX_UART2_VIRT + 3),
407 .irq = IRQ_IXP23XX_UART2,
408 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
409 .iotype = UPIO_MEM,
410 .regshift = 2,
411 .uartclk = IXP23XX_UART_XTAL,
412 },
413 { },
414};
415
416static struct platform_device ixp23xx_uart = {
417 .name = "serial8250",
418 .id = 0,
419 .dev.platform_data = ixp23xx_uart_data,
420 .num_resources = 2,
421 .resource = ixp23xx_uart_resources,
422};
423
424static struct platform_device *ixp23xx_devices[] __initdata = {
425 &ixp23xx_uart,
426};
427
428void __init ixp23xx_sys_init(void)
429{
430 platform_add_devices(ixp23xx_devices, ARRAY_SIZE(ixp23xx_devices));
431}
diff --git a/arch/arm/mach-ixp23xx/espresso.c b/arch/arm/mach-ixp23xx/espresso.c
new file mode 100644
index 000000000000..2327c9790416
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/espresso.c
@@ -0,0 +1,69 @@
1/*
2 * arch/arm/mach-ixp23xx/espresso.c
3 *
4 * Double Espresso-specific routines
5 *
6 * Author: Lennert Buytenhek <buytenh@wantstofly.org>
7 *
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
11 */
12
13#include <linux/config.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/spinlock.h>
17#include <linux/sched.h>
18#include <linux/interrupt.h>
19#include <linux/serial.h>
20#include <linux/tty.h>
21#include <linux/bitops.h>
22#include <linux/ioport.h>
23#include <linux/serial.h>
24#include <linux/serial_8250.h>
25#include <linux/serial_core.h>
26#include <linux/device.h>
27#include <linux/mm.h>
28#include <linux/pci.h>
29#include <linux/mtd/physmap.h>
30
31#include <asm/types.h>
32#include <asm/setup.h>
33#include <asm/memory.h>
34#include <asm/hardware.h>
35#include <asm/mach-types.h>
36#include <asm/irq.h>
37#include <asm/system.h>
38#include <asm/tlbflush.h>
39#include <asm/pgtable.h>
40
41#include <asm/mach/map.h>
42#include <asm/mach/irq.h>
43#include <asm/mach/arch.h>
44#include <asm/mach/irq.h>
45#include <asm/mach/pci.h>
46
47static void __init espresso_init(void)
48{
49 physmap_configure(0x90000000, 0x02000000, 2, NULL);
50
51 /*
52 * Mark flash as writeable.
53 */
54 IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
55 IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
56
57 ixp23xx_sys_init();
58}
59
60MACHINE_START(ESPRESSO, "IP Fabrics Double Espresso")
61 /* Maintainer: Lennert Buytenhek */
62 .phys_io = IXP23XX_PERIPHERAL_PHYS,
63 .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
64 .map_io = ixp23xx_map_io,
65 .init_irq = ixp23xx_init_irq,
66 .timer = &ixp23xx_timer,
67 .boot_params = 0x00000100,
68 .init_machine = espresso_init,
69MACHINE_END
diff --git a/arch/arm/mach-ixp23xx/ixdp2351.c b/arch/arm/mach-ixp23xx/ixdp2351.c
new file mode 100644
index 000000000000..00146c35daac
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/ixdp2351.c
@@ -0,0 +1,325 @@
1/*
2 * arch/arm/mach-ixp23xx/ixdp2351.c
3 *
4 * IXDP2351 board-specific routines
5 *
6 * Author: Deepak Saxena <dsaxena@plexity.net>
7 *
8 * Copyright 2005 (c) MontaVista Software, Inc.
9 *
10 * Based on 2.4 code Copyright 2004 (c) Intel Corporation
11 *
12 * This file is licensed under the terms of the GNU General Public
13 * License version 2. This program is licensed "as is" without any
14 * warranty of any kind, whether express or implied.
15 */
16
17#include <linux/config.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/spinlock.h>
21#include <linux/sched.h>
22#include <linux/interrupt.h>
23#include <linux/serial.h>
24#include <linux/tty.h>
25#include <linux/bitops.h>
26#include <linux/ioport.h>
27#include <linux/serial.h>
28#include <linux/serial_8250.h>
29#include <linux/serial_core.h>
30#include <linux/device.h>
31#include <linux/mm.h>
32#include <linux/pci.h>
33#include <linux/mtd/physmap.h>
34
35#include <asm/types.h>
36#include <asm/setup.h>
37#include <asm/memory.h>
38#include <asm/hardware.h>
39#include <asm/mach-types.h>
40#include <asm/irq.h>
41#include <asm/system.h>
42#include <asm/tlbflush.h>
43#include <asm/pgtable.h>
44
45#include <asm/mach/map.h>
46#include <asm/mach/irq.h>
47#include <asm/mach/arch.h>
48#include <asm/mach/irq.h>
49#include <asm/mach/pci.h>
50
51/*
52 * IXDP2351 Interrupt Handling
53 */
54static void ixdp2351_inta_mask(unsigned int irq)
55{
56 *IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(irq);
57}
58
59static void ixdp2351_inta_unmask(unsigned int irq)
60{
61 *IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
62}
63
64static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
65{
66 u16 ex_interrupt =
67 *IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
68 int i;
69
70 desc->chip->mask(irq);
71
72 for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
73 if (ex_interrupt & (1 << i)) {
74 struct irqdesc *cpld_desc;
75 int cpld_irq =
76 IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
77 cpld_desc = irq_desc + cpld_irq;
78 cpld_desc->handle(cpld_irq, cpld_desc, regs);
79 }
80 }
81
82 desc->chip->unmask(irq);
83}
84
85static struct irqchip ixdp2351_inta_chip = {
86 .ack = ixdp2351_inta_mask,
87 .mask = ixdp2351_inta_mask,
88 .unmask = ixdp2351_inta_unmask
89};
90
91static void ixdp2351_intb_mask(unsigned int irq)
92{
93 *IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(irq);
94}
95
96static void ixdp2351_intb_unmask(unsigned int irq)
97{
98 *IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
99}
100
101static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
102{
103 u16 ex_interrupt =
104 *IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
105 int i;
106
107 desc->chip->ack(irq);
108
109 for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
110 if (ex_interrupt & (1 << i)) {
111 struct irqdesc *cpld_desc;
112 int cpld_irq =
113 IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
114 cpld_desc = irq_desc + cpld_irq;
115 cpld_desc->handle(cpld_irq, cpld_desc, regs);
116 }
117 }
118
119 desc->chip->unmask(irq);
120}
121
122static struct irqchip ixdp2351_intb_chip = {
123 .ack = ixdp2351_intb_mask,
124 .mask = ixdp2351_intb_mask,
125 .unmask = ixdp2351_intb_unmask
126};
127
128void ixdp2351_init_irq(void)
129{
130 int irq;
131
132 /* Mask all interrupts from CPLD, disable simulation */
133 *IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
134 *IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
135 *IXDP2351_CPLD_INTA_SIM_REG = 0;
136 *IXDP2351_CPLD_INTB_SIM_REG = 0;
137
138 ixp23xx_init_irq();
139
140 for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
141 irq <
142 IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
143 irq++) {
144 if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
145 set_irq_flags(irq, IRQF_VALID);
146 set_irq_handler(irq, do_level_IRQ);
147 set_irq_chip(irq, &ixdp2351_inta_chip);
148 }
149 }
150
151 for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
152 irq <
153 IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
154 irq++) {
155 if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
156 set_irq_flags(irq, IRQF_VALID);
157 set_irq_handler(irq, do_level_IRQ);
158 set_irq_chip(irq, &ixdp2351_intb_chip);
159 }
160 }
161
162 set_irq_chained_handler(IRQ_IXP23XX_INTA, &ixdp2351_inta_handler);
163 set_irq_chained_handler(IRQ_IXP23XX_INTB, &ixdp2351_intb_handler);
164}
165
166/*
167 * IXDP2351 PCI
168 */
169
170/*
171 * This board does not do normal PCI IRQ routing, or any
172 * sort of swizzling, so we just need to check where on the
173 * bus the device is and figure out what CPLD pin it is
174 * being routed to.
175 */
176#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
177
178static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
179{
180 u8 bus = dev->bus->number;
181 u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
182 struct pci_bus *tmp_bus = dev->bus;
183
184 /* Primary bus, no interrupts here */
185 if (!bus)
186 return -1;
187
188 /* Lookup first leaf in bus tree */
189 while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
190 tmp_bus = tmp_bus->parent;
191
192 /* Select between known bridges */
193 switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
194 /* Device is located after first bridge */
195 case 0x0008:
196 if (tmp_bus == dev->bus) {
197 /* Device is located directy after first bridge */
198 switch (devpin) {
199 /* Onboard 82546 */
200 case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
201 return IRQ_IXDP2351_INTA_82546;
202 case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
203 return IRQ_IXDP2351_INTB_82546;
204 /* PMC SLOT */
205 case DEVPIN(0, 1): /* PMCP INTA# */
206 case DEVPIN(2, 4): /* PMCS INTD# */
207 return IRQ_IXDP2351_SPCI_PMC_INTA;
208 case DEVPIN(0, 2): /* PMCP INTB# */
209 case DEVPIN(2, 1): /* PMCS INTA# */
210 return IRQ_IXDP2351_SPCI_PMC_INTB;
211 case DEVPIN(0, 3): /* PMCP INTC# */
212 case DEVPIN(2, 2): /* PMCS INTB# */
213 return IRQ_IXDP2351_SPCI_PMC_INTC;
214 case DEVPIN(0, 4): /* PMCP INTD# */
215 case DEVPIN(2, 3): /* PMCS INTC# */
216 return IRQ_IXDP2351_SPCI_PMC_INTD;
217 }
218 } else {
219 /* Device is located indirectly after first bridge */
220 /* Not supported now */
221 return -1;
222 }
223 break;
224 case 0x0010:
225 if (tmp_bus == dev->bus) {
226 /* Device is located directy after second bridge */
227 /* Secondary bus of second bridge */
228 switch (devpin) {
229 case DEVPIN(0, 1): /* DB#0 */
230 case DEVPIN(0, 2):
231 case DEVPIN(0, 3):
232 case DEVPIN(0, 4):
233 return IRQ_IXDP2351_SPCI_DB_0;
234 case DEVPIN(1, 1): /* DB#1 */
235 case DEVPIN(1, 2):
236 case DEVPIN(1, 3):
237 case DEVPIN(1, 4):
238 return IRQ_IXDP2351_SPCI_DB_1;
239 case DEVPIN(2, 1): /* FIC1 */
240 case DEVPIN(2, 2):
241 case DEVPIN(2, 3):
242 case DEVPIN(2, 4):
243 case DEVPIN(3, 1): /* FIC2 */
244 case DEVPIN(3, 2):
245 case DEVPIN(3, 3):
246 case DEVPIN(3, 4):
247 return IRQ_IXDP2351_SPCI_FIC;
248 }
249 } else {
250 /* Device is located indirectly after second bridge */
251 /* Not supported now */
252 return -1;
253 }
254 break;
255 }
256
257 return -1;
258}
259
260struct hw_pci ixdp2351_pci __initdata = {
261 .nr_controllers = 1,
262 .preinit = ixp23xx_pci_preinit,
263 .setup = ixp23xx_pci_setup,
264 .scan = ixp23xx_pci_scan_bus,
265 .map_irq = ixdp2351_map_irq,
266};
267
268int __init ixdp2351_pci_init(void)
269{
270 if (machine_is_ixdp2351())
271 pci_common_init(&ixdp2351_pci);
272
273 return 0;
274}
275
276subsys_initcall(ixdp2351_pci_init);
277
278/*
279 * IXDP2351 Static Mapped I/O
280 */
281static struct map_desc ixdp2351_io_desc[] __initdata = {
282 {
283 .virtual = IXDP2351_NP_VIRT_BASE,
284 .pfn = __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
285 .length = IXDP2351_NP_PHYS_SIZE,
286 .type = MT_DEVICE
287 }, {
288 .virtual = IXDP2351_BB_BASE_VIRT,
289 .pfn = __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
290 .length = IXDP2351_BB_SIZE,
291 .type = MT_DEVICE
292 }
293};
294
295static void __init ixdp2351_map_io(void)
296{
297 ixp23xx_map_io();
298 iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
299}
300
301static void __init ixdp2351_init(void)
302{
303 physmap_configure(0x90000000, 0x04000000, 1, NULL);
304
305 /*
306 * Mark flash as writeable
307 */
308 IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
309 IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
310 IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
311 IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
312
313 ixp23xx_sys_init();
314}
315
316MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
317 /* Maintainer: MontaVista Software, Inc. */
318 .phys_io = IXP23XX_PERIPHERAL_PHYS,
319 .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
320 .map_io = ixdp2351_map_io,
321 .init_irq = ixdp2351_init_irq,
322 .timer = &ixp23xx_timer,
323 .boot_params = 0x00000100,
324 .init_machine = ixdp2351_init,
325MACHINE_END
diff --git a/arch/arm/mach-ixp23xx/pci.c b/arch/arm/mach-ixp23xx/pci.c
new file mode 100644
index 000000000000..5330ad78c1bb
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/pci.c
@@ -0,0 +1,275 @@
1/*
2 * arch/arm/mach-ixp23xx/pci.c
3 *
4 * PCI routines for IXP23XX based systems
5 *
6 * Copyright (c) 2005 MontaVista Software, Inc.
7 *
8 * based on original code:
9 *
10 * Author: Naeem Afzal <naeem.m.afzal@intel.com>
11 * Copyright 2002-2005 Intel Corp.
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 */
18
19#include <linux/config.h>
20#include <linux/sched.h>
21#include <linux/kernel.h>
22#include <linux/pci.h>
23#include <linux/interrupt.h>
24#include <linux/mm.h>
25#include <linux/init.h>
26#include <linux/ioport.h>
27#include <linux/slab.h>
28#include <linux/delay.h>
29
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <asm/sizes.h>
33#include <asm/system.h>
34#include <asm/mach/pci.h>
35#include <asm/mach-types.h>
36#include <asm/hardware.h>
37
38extern int (*external_fault) (unsigned long, struct pt_regs *);
39
40static int pci_master_aborts = 0;
41
42#ifdef DEBUG
43#define DBG(x...) printk(x)
44#else
45#define DBG(x...)
46#endif
47
48int clear_master_aborts(void);
49
50static u32
51*ixp23xx_pci_config_addr(unsigned int bus_nr, unsigned int devfn, int where)
52{
53 u32 *paddress;
54
55 /*
56 * Must be dword aligned
57 */
58 where &= ~3;
59
60 /*
61 * For top bus, generate type 0, else type 1
62 */
63 if (!bus_nr) {
64 if (PCI_SLOT(devfn) >= 8)
65 return 0;
66
67 paddress = (u32 *) (IXP23XX_PCI_CFG0_VIRT
68 | (1 << (PCI_SLOT(devfn) + 16))
69 | (PCI_FUNC(devfn) << 8) | where);
70 } else {
71 paddress = (u32 *) (IXP23XX_PCI_CFG1_VIRT
72 | (bus_nr << 16)
73 | (PCI_SLOT(devfn) << 11)
74 | (PCI_FUNC(devfn) << 8) | where);
75 }
76
77 return paddress;
78}
79
80/*
81 * Mask table, bits to mask for quantity of size 1, 2 or 4 bytes.
82 * 0 and 3 are not valid indexes...
83 */
84static u32 bytemask[] = {
85 /*0*/ 0,
86 /*1*/ 0xff,
87 /*2*/ 0xffff,
88 /*3*/ 0,
89 /*4*/ 0xffffffff,
90};
91
92static int ixp23xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
93 int where, int size, u32 *value)
94{
95 u32 n;
96 u32 *addr;
97
98 n = where % 4;
99
100 DBG("In config_read(%d) %d from dev %d:%d:%d\n", size, where,
101 bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
102
103 addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
104 if (!addr)
105 return PCIBIOS_DEVICE_NOT_FOUND;
106
107 pci_master_aborts = 0;
108 *value = (*addr >> (8*n)) & bytemask[size];
109 if (pci_master_aborts) {
110 pci_master_aborts = 0;
111 *value = 0xffffffff;
112 return PCIBIOS_DEVICE_NOT_FOUND;
113 }
114
115 return PCIBIOS_SUCCESSFUL;
116}
117
118/*
119 * We don't do error checking on the address for writes.
120 * It's assumed that the user checked for the device existing first
121 * by doing a read first.
122 */
123static int ixp23xx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
124 int where, int size, u32 value)
125{
126 u32 mask;
127 u32 *addr;
128 u32 temp;
129
130 mask = ~(bytemask[size] << ((where % 0x4) * 8));
131 addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
132 if (!addr)
133 return PCIBIOS_DEVICE_NOT_FOUND;
134 temp = (u32) (value) << ((where % 0x4) * 8);
135 *addr = (*addr & mask) | temp;
136
137 clear_master_aborts();
138
139 return PCIBIOS_SUCCESSFUL;
140}
141
142struct pci_ops ixp23xx_pci_ops = {
143 .read = ixp23xx_pci_read_config,
144 .write = ixp23xx_pci_write_config,
145};
146
147struct pci_bus *ixp23xx_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
148{
149 return pci_scan_bus(sysdata->busnr, &ixp23xx_pci_ops, sysdata);
150}
151
152int ixp23xx_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
153{
154 volatile unsigned long temp;
155 unsigned long flags;
156
157 pci_master_aborts = 1;
158
159 local_irq_save(flags);
160 temp = *IXP23XX_PCI_CONTROL;
161
162 /*
163 * master abort and cmd tgt err
164 */
165 if (temp & ((1 << 8) | (1 << 5)))
166 *IXP23XX_PCI_CONTROL = temp;
167
168 temp = *IXP23XX_PCI_CMDSTAT;
169
170 if (temp & (1 << 29))
171 *IXP23XX_PCI_CMDSTAT = temp;
172 local_irq_restore(flags);
173
174 /*
175 * If it was an imprecise abort, then we need to correct the
176 * return address to be _after_ the instruction.
177 */
178 if (fsr & (1 << 10))
179 regs->ARM_pc += 4;
180
181 return 0;
182}
183
184int clear_master_aborts(void)
185{
186 volatile u32 temp;
187
188 temp = *IXP23XX_PCI_CONTROL;
189
190 /*
191 * master abort and cmd tgt err
192 */
193 if (temp & ((1 << 8) | (1 << 5)))
194 *IXP23XX_PCI_CONTROL = temp;
195
196 temp = *IXP23XX_PCI_CMDSTAT;
197
198 if (temp & (1 << 29))
199 *IXP23XX_PCI_CMDSTAT = temp;
200
201 return 0;
202}
203
204void __init ixp23xx_pci_preinit(void)
205{
206#ifdef __ARMEB__
207 *IXP23XX_PCI_CONTROL |= 0x20000; /* set I/O swapping */
208#endif
209 /*
210 * ADDR_31 needs to be clear for PCI memory access to CPP memory
211 */
212 *IXP23XX_CPP2XSI_CURR_XFER_REG3 &= ~IXP23XX_CPP2XSI_ADDR_31;
213 *IXP23XX_CPP2XSI_CURR_XFER_REG3 |= IXP23XX_CPP2XSI_PSH_OFF;
214
215 /*
216 * Select correct memory for PCI inbound transactions
217 */
218 if (ixp23xx_cpp_boot()) {
219 *IXP23XX_PCI_CPP_ADDR_BITS &= ~(1 << 1);
220 } else {
221 *IXP23XX_PCI_CPP_ADDR_BITS |= (1 << 1);
222 }
223
224 hook_fault_code(16+6, ixp23xx_pci_abort_handler, SIGBUS,
225 "PCI config cycle to non-existent device");
226
227 *IXP23XX_PCI_ADDR_EXT = 0x0000e000;
228}
229
230/*
231 * Prevent PCI layer from seeing the inbound host-bridge resources
232 */
233static void __devinit pci_fixup_ixp23xx(struct pci_dev *dev)
234{
235 int i;
236
237 dev->class &= 0xff;
238 dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
239 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
240 dev->resource[i].start = 0;
241 dev->resource[i].end = 0;
242 dev->resource[i].flags = 0;
243 }
244}
245DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9002, pci_fixup_ixp23xx);
246
247/*
248 * IXP2300 systems often have large resource requirements, so we just
249 * use our own resource space.
250 */
251static struct resource ixp23xx_pci_mem_space = {
252 .start = IXP23XX_PCI_MEM_START,
253 .end = IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE - 1,
254 .flags = IORESOURCE_MEM,
255 .name = "PCI Mem Space"
256};
257
258static struct resource ixp23xx_pci_io_space = {
259 .start = 0x00000100,
260 .end = 0x01ffffff,
261 .flags = IORESOURCE_IO,
262 .name = "PCI I/O Space"
263};
264
265int ixp23xx_pci_setup(int nr, struct pci_sys_data *sys)
266{
267 if (nr >= 1)
268 return 0;
269
270 sys->resource[0] = &ixp23xx_pci_io_space;
271 sys->resource[1] = &ixp23xx_pci_mem_space;
272 sys->resource[2] = NULL;
273
274 return 1;
275}
diff --git a/arch/arm/mach-ixp23xx/roadrunner.c b/arch/arm/mach-ixp23xx/roadrunner.c
new file mode 100644
index 000000000000..43c14e740794
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/roadrunner.c
@@ -0,0 +1,164 @@
1/*
2 * arch/arm/mach-ixp23xx/roadrunner.c
3 *
4 * RoadRunner board-specific routines
5 *
6 * Author: Deepak Saxena <dsaxena@plexity.net>
7 *
8 * Copyright 2005 (c) MontaVista Software, Inc.
9 *
10 * Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
11 *
12 * This file is licensed under the terms of the GNU General Public
13 * License version 2. This program is licensed "as is" without any
14 * warranty of any kind, whether express or implied.
15 */
16
17#include <linux/config.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/spinlock.h>
21#include <linux/sched.h>
22#include <linux/interrupt.h>
23#include <linux/serial.h>
24#include <linux/tty.h>
25#include <linux/bitops.h>
26#include <linux/ioport.h>
27#include <linux/serial.h>
28#include <linux/serial_8250.h>
29#include <linux/serial_core.h>
30#include <linux/device.h>
31#include <linux/mm.h>
32#include <linux/pci.h>
33#include <linux/mtd/physmap.h>
34
35#include <asm/types.h>
36#include <asm/setup.h>
37#include <asm/memory.h>
38#include <asm/hardware.h>
39#include <asm/mach-types.h>
40#include <asm/irq.h>
41#include <asm/system.h>
42#include <asm/tlbflush.h>
43#include <asm/pgtable.h>
44
45#include <asm/mach/map.h>
46#include <asm/mach/irq.h>
47#include <asm/mach/arch.h>
48#include <asm/mach/irq.h>
49#include <asm/mach/pci.h>
50
51/*
52 * Interrupt mapping
53 */
54#define INTA IRQ_ROADRUNNER_PCI_INTA
55#define INTB IRQ_ROADRUNNER_PCI_INTB
56#define INTC IRQ_ROADRUNNER_PCI_INTC
57#define INTD IRQ_ROADRUNNER_PCI_INTD
58
59#define INTC_PIN IXP23XX_GPIO_PIN_11
60#define INTD_PIN IXP23XX_GPIO_PIN_12
61
62static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
63{
64 static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
65 static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
66 static int usb_irq[] = {INTB, INTC, INTD, -1};
67 static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
68 static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
69
70 switch(dev->bus->number) {
71 case 0:
72 switch(dev->devfn) {
73 case 0x0: // PCI-PCI bridge
74 break;
75 case 0x8: // PCI Card Slot
76 return pci_card_slot_irq[pin - 1];
77 case 0x10: // PMC Slot
78 return pmc_card_slot_irq[pin - 1];
79 case 0x18: // PMC Slot Secondary Agent
80 break;
81 case 0x20: // IXP Processor
82 break;
83 default:
84 return NO_IRQ;
85 }
86 break;
87
88 case 1:
89 switch(dev->devfn) {
90 case 0x0: // IDE Controller
91 return (pin == 1) ? INTC : -1;
92 case 0x8: // USB fun 0
93 case 0x9: // USB fun 1
94 case 0xa: // USB fun 2
95 return usb_irq[pin - 1];
96 case 0x10: // Mini PCI 1
97 return mini_pci_1_irq[pin-1];
98 case 0x18: // Mini PCI 2
99 return mini_pci_2_irq[pin-1];
100 case 0x20: // MEM slot
101 return (pin == 1) ? INTA : -1;
102 default:
103 return NO_IRQ;
104 }
105 break;
106
107 default:
108 return NO_IRQ;
109 }
110
111 return NO_IRQ;
112}
113
114static void roadrunner_pci_preinit(void)
115{
116 set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
117 set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
118
119 ixp23xx_pci_preinit();
120}
121
122static struct hw_pci roadrunner_pci __initdata = {
123 .nr_controllers = 1,
124 .preinit = roadrunner_pci_preinit,
125 .setup = ixp23xx_pci_setup,
126 .scan = ixp23xx_pci_scan_bus,
127 .map_irq = roadrunner_map_irq,
128};
129
130static int __init roadrunner_pci_init(void)
131{
132 if (machine_is_roadrunner())
133 pci_common_init(&roadrunner_pci);
134
135 return 0;
136};
137
138subsys_initcall(roadrunner_pci_init);
139
140static void __init roadrunner_init(void)
141{
142 physmap_configure(0x90000000, 0x04000000, 2, NULL);
143
144 /*
145 * Mark flash as writeable
146 */
147 IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
148 IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
149 IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
150 IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
151
152 ixp23xx_sys_init();
153}
154
155MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
156 /* Maintainer: Deepak Saxena */
157 .phys_io = IXP23XX_PERIPHERAL_PHYS,
158 .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
159 .map_io = ixp23xx_map_io,
160 .init_irq = ixp23xx_init_irq,
161 .timer = &ixp23xx_timer,
162 .boot_params = 0x00000100,
163 .init_machine = roadrunner_init,
164MACHINE_END
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 18:17:17 -0500