[ARM] versatile: add PL061 gpiolib support
[linux-2.6.git] / arch / arm / mach-realview / realview_pbx.c
1 /*
2  *  arch/arm/mach-realview/realview_pbx.c
3  *
4  *  Copyright (C) 2009 ARM Limited
5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/sysdev.h>
24 #include <linux/amba/bus.h>
25 #include <linux/io.h>
26
27 #include <asm/irq.h>
28 #include <asm/leds.h>
29 #include <asm/mach-types.h>
30 #include <asm/smp_twd.h>
31 #include <asm/hardware/gic.h>
32 #include <asm/hardware/cache-l2x0.h>
33
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36 #include <asm/mach/mmc.h>
37 #include <asm/mach/time.h>
38
39 #include <mach/hardware.h>
40 #include <mach/board-pbx.h>
41 #include <mach/irqs.h>
42
43 #include "core.h"
44
45 static struct map_desc realview_pbx_io_desc[] __initdata = {
46         {
47                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
48                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
49                 .length         = SZ_4K,
50                 .type           = MT_DEVICE,
51         }, {
52                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
53                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
54                 .length         = SZ_4K,
55                 .type           = MT_DEVICE,
56         }, {
57                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
58                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
59                 .length         = SZ_4K,
60                 .type           = MT_DEVICE,
61         }, {
62                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
63                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
64                 .length         = SZ_4K,
65                 .type           = MT_DEVICE,
66         }, {
67                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
68                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
69                 .length         = SZ_4K,
70                 .type           = MT_DEVICE,
71         }, {
72                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
73                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
74                 .length         = SZ_4K,
75                 .type           = MT_DEVICE,
76         },
77 #ifdef CONFIG_PCI
78         {
79                 .virtual        = PCIX_UNIT_BASE,
80                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
81                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
82                 .type           = MT_DEVICE,
83         },
84 #endif
85 #ifdef CONFIG_DEBUG_LL
86         {
87                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
88                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
89                 .length         = SZ_4K,
90                 .type           = MT_DEVICE,
91         },
92 #endif
93 };
94
95 static struct map_desc realview_local_io_desc[] __initdata = {
96         {
97                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
98                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_BASE),
99                 .length         = SZ_4K,
100                 .type           = MT_DEVICE,
101         }, {
102                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
103                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
104                 .length         = SZ_4K,
105                 .type           = MT_DEVICE,
106         }, {
107                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
108                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
109                 .length         = SZ_8K,
110                 .type           = MT_DEVICE,
111         }
112 };
113
114 static void __init realview_pbx_map_io(void)
115 {
116         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
117         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
118                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
119 }
120
121 /*
122  * RealView PBXCore AMBA devices
123  */
124
125 #define GPIO2_IRQ               { IRQ_PBX_GPIO2, NO_IRQ }
126 #define GPIO2_DMA               { 0, 0 }
127 #define GPIO3_IRQ               { IRQ_PBX_GPIO3, NO_IRQ }
128 #define GPIO3_DMA               { 0, 0 }
129 #define AACI_IRQ                { IRQ_PBX_AACI, NO_IRQ }
130 #define AACI_DMA                { 0x80, 0x81 }
131 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
132 #define MMCI0_DMA               { 0x84, 0 }
133 #define KMI0_IRQ                { IRQ_PBX_KMI0, NO_IRQ }
134 #define KMI0_DMA                { 0, 0 }
135 #define KMI1_IRQ                { IRQ_PBX_KMI1, NO_IRQ }
136 #define KMI1_DMA                { 0, 0 }
137 #define PBX_SMC_IRQ             { NO_IRQ, NO_IRQ }
138 #define PBX_SMC_DMA             { 0, 0 }
139 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
140 #define MPMC_DMA                { 0, 0 }
141 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD, NO_IRQ }
142 #define PBX_CLCD_DMA            { 0, 0 }
143 #define DMAC_IRQ                { IRQ_PBX_DMAC, NO_IRQ }
144 #define DMAC_DMA                { 0, 0 }
145 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
146 #define SCTL_DMA                { 0, 0 }
147 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG, NO_IRQ }
148 #define PBX_WATCHDOG_DMA        { 0, 0 }
149 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0, NO_IRQ }
150 #define PBX_GPIO0_DMA           { 0, 0 }
151 #define GPIO1_IRQ               { IRQ_PBX_GPIO1, NO_IRQ }
152 #define GPIO1_DMA               { 0, 0 }
153 #define PBX_RTC_IRQ             { IRQ_PBX_RTC, NO_IRQ }
154 #define PBX_RTC_DMA             { 0, 0 }
155 #define SCI_IRQ                 { IRQ_PBX_SCI, NO_IRQ }
156 #define SCI_DMA                 { 7, 6 }
157 #define PBX_UART0_IRQ           { IRQ_PBX_UART0, NO_IRQ }
158 #define PBX_UART0_DMA           { 15, 14 }
159 #define PBX_UART1_IRQ           { IRQ_PBX_UART1, NO_IRQ }
160 #define PBX_UART1_DMA           { 13, 12 }
161 #define PBX_UART2_IRQ           { IRQ_PBX_UART2, NO_IRQ }
162 #define PBX_UART2_DMA           { 11, 10 }
163 #define PBX_UART3_IRQ           { IRQ_PBX_UART3, NO_IRQ }
164 #define PBX_UART3_DMA           { 0x86, 0x87 }
165 #define PBX_SSP_IRQ             { IRQ_PBX_SSP, NO_IRQ }
166 #define PBX_SSP_DMA             { 9, 8 }
167
168 /* FPGA Primecells */
169 AMBA_DEVICE(aaci,       "fpga:04",      AACI,           NULL);
170 AMBA_DEVICE(mmc0,       "fpga:05",      MMCI0,          &realview_mmc0_plat_data);
171 AMBA_DEVICE(kmi0,       "fpga:06",      KMI0,           NULL);
172 AMBA_DEVICE(kmi1,       "fpga:07",      KMI1,           NULL);
173 AMBA_DEVICE(uart3,      "fpga:09",      PBX_UART3,      NULL);
174
175 /* DevChip Primecells */
176 AMBA_DEVICE(smc,        "dev:00",       PBX_SMC,        NULL);
177 AMBA_DEVICE(sctl,       "dev:e0",       SCTL,           NULL);
178 AMBA_DEVICE(wdog,       "dev:e1",       PBX_WATCHDOG,   NULL);
179 AMBA_DEVICE(gpio0,      "dev:e4",       PBX_GPIO0,      NULL);
180 AMBA_DEVICE(gpio1,      "dev:e5",       GPIO1,          NULL);
181 AMBA_DEVICE(gpio2,      "dev:e6",       GPIO2,          NULL);
182 AMBA_DEVICE(rtc,        "dev:e8",       PBX_RTC,        NULL);
183 AMBA_DEVICE(sci0,       "dev:f0",       SCI,            NULL);
184 AMBA_DEVICE(uart0,      "dev:f1",       PBX_UART0,      NULL);
185 AMBA_DEVICE(uart1,      "dev:f2",       PBX_UART1,      NULL);
186 AMBA_DEVICE(uart2,      "dev:f3",       PBX_UART2,      NULL);
187 AMBA_DEVICE(ssp0,       "dev:f4",       PBX_SSP,        NULL);
188
189 /* Primecells on the NEC ISSP chip */
190 AMBA_DEVICE(clcd,       "issp:20",      PBX_CLCD,       &clcd_plat_data);
191 AMBA_DEVICE(dmac,       "issp:30",      DMAC,           NULL);
192
193 static struct amba_device *amba_devs[] __initdata = {
194         &dmac_device,
195         &uart0_device,
196         &uart1_device,
197         &uart2_device,
198         &uart3_device,
199         &smc_device,
200         &clcd_device,
201         &sctl_device,
202         &wdog_device,
203         &gpio0_device,
204         &gpio1_device,
205         &gpio2_device,
206         &rtc_device,
207         &sci0_device,
208         &ssp0_device,
209         &aaci_device,
210         &mmc0_device,
211         &kmi0_device,
212         &kmi1_device,
213 };
214
215 /*
216  * RealView PB-X platform devices
217  */
218 static struct resource realview_pbx_flash_resources[] = {
219         [0] = {
220                 .start          = REALVIEW_PBX_FLASH0_BASE,
221                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
222                 .flags          = IORESOURCE_MEM,
223         },
224         [1] = {
225                 .start          = REALVIEW_PBX_FLASH1_BASE,
226                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
227                 .flags          = IORESOURCE_MEM,
228         },
229 };
230
231 static struct resource realview_pbx_smsc911x_resources[] = {
232         [0] = {
233                 .start          = REALVIEW_PBX_ETH_BASE,
234                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
235                 .flags          = IORESOURCE_MEM,
236         },
237         [1] = {
238                 .start          = IRQ_PBX_ETH,
239                 .end            = IRQ_PBX_ETH,
240                 .flags          = IORESOURCE_IRQ,
241         },
242 };
243
244 static struct resource realview_pbx_isp1761_resources[] = {
245         [0] = {
246                 .start          = REALVIEW_PBX_USB_BASE,
247                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
248                 .flags          = IORESOURCE_MEM,
249         },
250         [1] = {
251                 .start          = IRQ_PBX_USB,
252                 .end            = IRQ_PBX_USB,
253                 .flags          = IORESOURCE_IRQ,
254         },
255 };
256
257 static void __init gic_init_irq(void)
258 {
259         /* ARM PBX on-board GIC */
260         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
261                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
262                 gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
263                               29);
264                 gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
265         } else {
266                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
267                 gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
268                               IRQ_PBX_GIC_START);
269                 gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
270         }
271 }
272
273 static void __init realview_pbx_timer_init(void)
274 {
275         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
276         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
277         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
278         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
279
280 #ifdef CONFIG_LOCAL_TIMERS
281         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
282                 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
283 #endif
284         realview_timer_init(IRQ_PBX_TIMER0_1);
285 }
286
287 static struct sys_timer realview_pbx_timer = {
288         .init           = realview_pbx_timer_init,
289 };
290
291 static void __init realview_pbx_init(void)
292 {
293         int i;
294
295 #ifdef CONFIG_CACHE_L2X0
296         if (core_tile_pbxa9mp()) {
297                 void __iomem *l2x0_base =
298                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
299
300                 /* set RAM latencies to 1 cycle for eASIC */
301                 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
302                 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
303
304                 /* 16KB way size, 8-way associativity, parity disabled
305                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
306                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
307         }
308 #endif
309
310         realview_flash_register(realview_pbx_flash_resources,
311                                 ARRAY_SIZE(realview_pbx_flash_resources));
312         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
313         platform_device_register(&realview_i2c_device);
314         platform_device_register(&realview_cf_device);
315         realview_usb_register(realview_pbx_isp1761_resources);
316
317         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
318                 struct amba_device *d = amba_devs[i];
319                 amba_device_register(d, &iomem_resource);
320         }
321
322 #ifdef CONFIG_LEDS
323         leds_event = realview_leds_event;
324 #endif
325 }
326
327 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
328         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
329         .phys_io        = REALVIEW_PBX_UART0_BASE,
330         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
331         .boot_params    = PHYS_OFFSET + 0x00000100,
332         .map_io         = realview_pbx_map_io,
333         .init_irq       = gic_init_irq,
334         .timer          = &realview_pbx_timer,
335         .init_machine   = realview_pbx_init,
336 MACHINE_END