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authorRalf Baechle <ralf@linux-mips.org>2006-06-18 11:39:46 -0400
committerRalf Baechle <ralf@linux-mips.org>2006-06-19 12:39:26 -0400
commit35189fad3cb5f6e3ab66c8321928a851de0cd2b1 (patch)
tree70dcd11a08d964da9ee27bc716b2205f250b42dd /arch/mips/basler
parent355c471f2ff324c21f8a1fb8e2e242a0f2a4aa68 (diff)
[MIPS] Support for the RM9000-based Basler eXcite smart camera platform.
Signed-off-by: Thomas Koeller <thomas.koeller@baslerweb.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/basler')
-rw-r--r--arch/mips/basler/excite/Makefile9
-rw-r--r--arch/mips/basler/excite/excite_dbg_io.c122
-rw-r--r--arch/mips/basler/excite/excite_device.c404
-rw-r--r--arch/mips/basler/excite/excite_flashtest.c294
-rw-r--r--arch/mips/basler/excite/excite_fpga.h80
-rw-r--r--arch/mips/basler/excite/excite_iodev.c183
-rw-r--r--arch/mips/basler/excite/excite_iodev.h10
-rw-r--r--arch/mips/basler/excite/excite_irq.c129
-rw-r--r--arch/mips/basler/excite/excite_procfs.c81
-rw-r--r--arch/mips/basler/excite/excite_prom.c148
-rw-r--r--arch/mips/basler/excite/excite_setup.c307
11 files changed, 1767 insertions, 0 deletions
diff --git a/arch/mips/basler/excite/Makefile b/arch/mips/basler/excite/Makefile
new file mode 100644
index 000000000000..519142c2e4ef
--- /dev/null
+++ b/arch/mips/basler/excite/Makefile
@@ -0,0 +1,9 @@
1#
2# Makefile for Basler eXcite
3#
4
5obj-$(CONFIG_BASLER_EXCITE) += excite_irq.o excite_prom.o excite_setup.o \
6 excite_device.o excite_procfs.o
7
8obj-$(CONFIG_KGDB) += excite_dbg_io.o
9obj-m += excite_iodev.o
diff --git a/arch/mips/basler/excite/excite_dbg_io.c b/arch/mips/basler/excite/excite_dbg_io.c
new file mode 100644
index 000000000000..83f6bddf578b
--- /dev/null
+++ b/arch/mips/basler/excite/excite_dbg_io.c
@@ -0,0 +1,122 @@
1/*
2 * Copyright (C) 2004 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/config.h>
21#include <linux/linkage.h>
22#include <linux/init.h>
23#include <linux/kernel.h>
24#include <asm/gdb-stub.h>
25#include <asm/rm9k-ocd.h>
26#include <excite.h>
27
28#if defined(CONFIG_SERIAL_8250) && CONFIG_SERIAL_8250_NR_UARTS > 1
29#error Debug port used by serial driver
30#endif
31
32#define UART_CLK 25000000
33#define BASE_BAUD (UART_CLK / 16)
34#define REGISTER_BASE_0 0x0208UL
35#define REGISTER_BASE_1 0x0238UL
36
37#define REGISTER_BASE_DBG REGISTER_BASE_1
38
39#define CPRR 0x0004
40#define UACFG 0x0200
41#define UAINTS 0x0204
42#define UARBR (REGISTER_BASE_DBG + 0x0000)
43#define UATHR (REGISTER_BASE_DBG + 0x0004)
44#define UADLL (REGISTER_BASE_DBG + 0x0008)
45#define UAIER (REGISTER_BASE_DBG + 0x000c)
46#define UADLH (REGISTER_BASE_DBG + 0x0010)
47#define UAIIR (REGISTER_BASE_DBG + 0x0014)
48#define UAFCR (REGISTER_BASE_DBG + 0x0018)
49#define UALCR (REGISTER_BASE_DBG + 0x001c)
50#define UAMCR (REGISTER_BASE_DBG + 0x0020)
51#define UALSR (REGISTER_BASE_DBG + 0x0024)
52#define UAMSR (REGISTER_BASE_DBG + 0x0028)
53#define UASCR (REGISTER_BASE_DBG + 0x002c)
54
55#define PARITY_NONE 0
56#define PARITY_ODD 0x08
57#define PARITY_EVEN 0x18
58#define PARITY_MARK 0x28
59#define PARITY_SPACE 0x38
60
61#define DATA_5BIT 0x0
62#define DATA_6BIT 0x1
63#define DATA_7BIT 0x2
64#define DATA_8BIT 0x3
65
66#define STOP_1BIT 0x0
67#define STOP_2BIT 0x4
68
69#define BAUD_DBG 57600
70#define PARITY_DBG PARITY_NONE
71#define DATA_DBG DATA_8BIT
72#define STOP_DBG STOP_1BIT
73
74/* Initialize the serial port for KGDB debugging */
75void __init excite_kgdb_init(void)
76{
77 const u32 divisor = BASE_BAUD / BAUD_DBG;
78
79 /* Take the UART out of reset */
80 titan_writel(0x00ff1cff, CPRR);
81 titan_writel(0x00000000, UACFG);
82 titan_writel(0x00000002, UACFG);
83
84 titan_writel(0x0, UALCR);
85 titan_writel(0x0, UAIER);
86
87 /* Disable FIFOs */
88 titan_writel(0x00, UAFCR);
89
90 titan_writel(0x80, UALCR);
91 titan_writel(divisor & 0xff, UADLL);
92 titan_writel((divisor & 0xff00) >> 8, UADLH);
93 titan_writel(0x0, UALCR);
94
95 titan_writel(DATA_DBG | PARITY_DBG | STOP_DBG, UALCR);
96
97 /* Enable receiver interrupt */
98 titan_readl(UARBR);
99 titan_writel(0x1, UAIER);
100}
101
102int getDebugChar(void)
103{
104 while (!(titan_readl(UALSR) & 0x1));
105 return titan_readl(UARBR);
106}
107
108int putDebugChar(int data)
109{
110 while (!(titan_readl(UALSR) & 0x20));
111 titan_writel(data, UATHR);
112 return 1;
113}
114
115/* KGDB interrupt handler */
116asmlinkage void excite_kgdb_inthdl(struct pt_regs *regs)
117{
118 if (unlikely(
119 ((titan_readl(UAIIR) & 0x7) == 4)
120 && ((titan_readl(UARBR) & 0xff) == 0x3)))
121 set_async_breakpoint(&regs->cp0_epc);
122}
diff --git a/arch/mips/basler/excite/excite_device.c b/arch/mips/basler/excite/excite_device.c
new file mode 100644
index 000000000000..34ec76716fa0
--- /dev/null
+++ b/arch/mips/basler/excite/excite_device.c
@@ -0,0 +1,404 @@
1/*
2 * Copyright (C) 2004 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/config.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/platform_device.h>
24#include <linux/ioport.h>
25#include <linux/err.h>
26#include <linux/jiffies.h>
27#include <linux/sched.h>
28#include <asm/types.h>
29#include <asm/rm9k-ocd.h>
30
31#include <excite.h>
32#include <rm9k_eth.h>
33#include <rm9k_wdt.h>
34#include <rm9k_xicap.h>
35#include <excite_nandflash.h>
36
37#include "excite_iodev.h"
38
39#define RM9K_GE_UNIT 0
40#define XICAP_UNIT 0
41#define NAND_UNIT 0
42
43#define DLL_TIMEOUT 3 /* seconds */
44
45
46#define RINIT(__start__, __end__, __name__, __parent__) { \
47 .name = __name__ "_0", \
48 .start = (__start__), \
49 .end = (__end__), \
50 .flags = 0, \
51 .parent = (__parent__) \
52}
53
54#define RINIT_IRQ(__irq__, __name__) { \
55 .name = __name__ "_0", \
56 .start = (__irq__), \
57 .end = (__irq__), \
58 .flags = IORESOURCE_IRQ, \
59 .parent = NULL \
60}
61
62
63
64enum {
65 slice_xicap,
66 slice_eth
67};
68
69
70
71static struct resource
72 excite_ctr_resource = {
73 .name = "GPI counters",
74 .start = 0,
75 .end = 5,
76 .flags = 0,
77 .parent = NULL,
78 .sibling = NULL,
79 .child = NULL
80 },
81 excite_gpislice_resource = {
82 .name = "GPI slices",
83 .start = 0,
84 .end = 1,
85 .flags = 0,
86 .parent = NULL,
87 .sibling = NULL,
88 .child = NULL
89 },
90 excite_mdio_channel_resource = {
91 .name = "MDIO channels",
92 .start = 0,
93 .end = 1,
94 .flags = 0,
95 .parent = NULL,
96 .sibling = NULL,
97 .child = NULL
98 },
99 excite_fifomem_resource = {
100 .name = "FIFO memory",
101 .start = 0,
102 .end = 767,
103 .flags = 0,
104 .parent = NULL,
105 .sibling = NULL,
106 .child = NULL
107 },
108 excite_scram_resource = {
109 .name = "Scratch RAM",
110 .start = EXCITE_PHYS_SCRAM,
111 .end = EXCITE_PHYS_SCRAM + EXCITE_SIZE_SCRAM - 1,
112 .flags = IORESOURCE_MEM,
113 .parent = NULL,
114 .sibling = NULL,
115 .child = NULL
116 },
117 excite_fpga_resource = {
118 .name = "System FPGA",
119 .start = EXCITE_PHYS_FPGA,
120 .end = EXCITE_PHYS_FPGA + EXCITE_SIZE_FPGA - 1,
121 .flags = IORESOURCE_MEM,
122 .parent = NULL,
123 .sibling = NULL,
124 .child = NULL
125 },
126 excite_nand_resource = {
127 .name = "NAND flash control",
128 .start = EXCITE_PHYS_NAND,
129 .end = EXCITE_PHYS_NAND + EXCITE_SIZE_NAND - 1,
130 .flags = IORESOURCE_MEM,
131 .parent = NULL,
132 .sibling = NULL,
133 .child = NULL
134 },
135 excite_titan_resource = {
136 .name = "TITAN registers",
137 .start = EXCITE_PHYS_TITAN,
138 .end = EXCITE_PHYS_TITAN + EXCITE_SIZE_TITAN - 1,
139 .flags = IORESOURCE_MEM,
140 .parent = NULL,
141 .sibling = NULL,
142 .child = NULL
143 };
144
145
146
147static void adjust_resources(struct resource *res, unsigned int n)
148{
149 struct resource *p;
150 const unsigned long mask = IORESOURCE_IO | IORESOURCE_MEM
151 | IORESOURCE_IRQ | IORESOURCE_DMA;
152
153 for (p = res; p < res + n; p++) {
154 const struct resource * const parent = p->parent;
155 if (parent) {
156 p->start += parent->start;
157 p->end += parent->start;
158 p->flags = parent->flags & mask;
159 }
160 }
161}
162
163
164
165#if defined(CONFIG_EXCITE_FCAP_GPI) || defined(CONFIG_EXCITE_FCAP_GPI_MODULE)
166static struct resource xicap_rsrc[] = {
167 RINIT(0x4840, 0x486f, XICAP_RESOURCE_FIFO_RX, &excite_titan_resource),
168 RINIT(0x4940, 0x494b, XICAP_RESOURCE_FIFO_TX, &excite_titan_resource),
169 RINIT(0x5040, 0x5127, XICAP_RESOURCE_XDMA, &excite_titan_resource),
170 RINIT(0x1000, 0x112f, XICAP_RESOURCE_PKTPROC, &excite_titan_resource),
171 RINIT(0x1100, 0x110f, XICAP_RESOURCE_PKT_STREAM, &excite_fpga_resource),
172 RINIT(0x0800, 0x0bff, XICAP_RESOURCE_DMADESC, &excite_scram_resource),
173 RINIT(slice_xicap, slice_xicap, XICAP_RESOURCE_GPI_SLICE, &excite_gpislice_resource),
174 RINIT(0x0100, 0x02ff, XICAP_RESOURCE_FIFO_BLK, &excite_fifomem_resource),
175 RINIT_IRQ(TITAN_IRQ, XICAP_RESOURCE_IRQ)
176};
177
178static struct platform_device xicap_pdev = {
179 .name = XICAP_NAME,
180 .id = XICAP_UNIT,
181 .num_resources = ARRAY_SIZE(xicap_rsrc),
182 .resource = xicap_rsrc
183};
184
185/*
186 * Create a platform device for the GPI port that receives the
187 * image data from the embedded camera.
188 */
189static int __init xicap_devinit(void)
190{
191 unsigned long tend;
192 u32 reg;
193 int retval;
194
195 adjust_resources(xicap_rsrc, ARRAY_SIZE(xicap_rsrc));
196
197 /* Power up the slice and configure it. */
198 reg = titan_readl(CPTC1R);
199 reg &= ~(0x11100 << slice_xicap);
200 titan_writel(reg, CPTC1R);
201
202 /* Enable slice & DLL. */
203 reg= titan_readl(CPRR);
204 reg &= ~(0x00030003 << (slice_xicap * 2));
205 titan_writel(reg, CPRR);
206
207 /* Wait for DLLs to lock */
208 tend = jiffies + DLL_TIMEOUT * HZ;
209 while (time_before(jiffies, tend)) {
210 if (!(~titan_readl(CPDSR) & (0x1 << (slice_xicap * 4))))
211 break;
212 yield();
213 }
214
215 if (~titan_readl(CPDSR) & (0x1 << (slice_xicap * 4))) {
216 printk(KERN_ERR "%s: DLL not locked after %u seconds\n",
217 xicap_pdev.name, DLL_TIMEOUT);
218 retval = -ETIME;
219 } else {
220 /* Register platform device */
221 retval = platform_device_register(&xicap_pdev);
222 }
223
224 return retval;
225}
226
227device_initcall(xicap_devinit);
228#endif /* defined(CONFIG_EXCITE_FCAP_GPI) || defined(CONFIG_EXCITE_FCAP_GPI_MODULE) */
229
230
231
232#if defined(CONFIG_WDT_RM9K_GPI) || defined(CONFIG_WDT_RM9K_GPI_MODULE)
233static struct resource wdt_rsrc[] = {
234 RINIT(0, 0, WDT_RESOURCE_COUNTER, &excite_ctr_resource),
235 RINIT(0x0084, 0x008f, WDT_RESOURCE_REGS, &excite_titan_resource),
236 RINIT_IRQ(TITAN_IRQ, WDT_RESOURCE_IRQ)
237};
238
239static struct platform_device wdt_pdev = {
240 .name = WDT_NAME,
241 .id = -1,
242 .num_resources = ARRAY_SIZE(wdt_rsrc),
243 .resource = wdt_rsrc
244};
245
246/*
247 * Create a platform device for the GPI port that receives the
248 * image data from the embedded camera.
249 */
250static int __init wdt_devinit(void)
251{
252 adjust_resources(wdt_rsrc, ARRAY_SIZE(wdt_rsrc));
253 return platform_device_register(&wdt_pdev);
254}
255
256device_initcall(wdt_devinit);
257#endif /* defined(CONFIG_WDT_RM9K_GPI) || defined(CONFIG_WDT_RM9K_GPI_MODULE) */
258
259
260
261static struct resource excite_nandflash_rsrc[] = {
262 RINIT(0x2000, 0x201f, EXCITE_NANDFLASH_RESOURCE_REGS, &excite_nand_resource)
263};
264
265static struct platform_device excite_nandflash_pdev = {
266 .name = "excite_nand",
267 .id = NAND_UNIT,
268 .num_resources = ARRAY_SIZE(excite_nandflash_rsrc),
269 .resource = excite_nandflash_rsrc
270};
271
272/*
273 * Create a platform device for the access to the nand-flash
274 * port
275 */
276static int __init excite_nandflash_devinit(void)
277{
278 adjust_resources(excite_nandflash_rsrc, ARRAY_SIZE(excite_nandflash_rsrc));
279
280 /* nothing to be done here */
281
282 /* Register platform device */
283 return platform_device_register(&excite_nandflash_pdev);
284}
285
286device_initcall(excite_nandflash_devinit);
287
288
289
290static struct resource iodev_rsrc[] = {
291 RINIT_IRQ(FPGA1_IRQ, IODEV_RESOURCE_IRQ)
292};
293
294static struct platform_device io_pdev = {
295 .name = IODEV_NAME,
296 .id = -1,
297 .num_resources = ARRAY_SIZE(iodev_rsrc),
298 .resource = iodev_rsrc
299};
300
301/*
302 * Create a platform device for the external I/O ports.
303 */
304static int __init io_devinit(void)
305{
306 adjust_resources(iodev_rsrc, ARRAY_SIZE(iodev_rsrc));
307 return platform_device_register(&io_pdev);
308}
309
310device_initcall(io_devinit);
311
312
313
314
315#if defined(CONFIG_RM9K_GE) || defined(CONFIG_RM9K_GE_MODULE)
316static struct resource rm9k_ge_rsrc[] = {
317 RINIT(0x2200, 0x27ff, RM9K_GE_RESOURCE_MAC, &excite_titan_resource),
318 RINIT(0x1800, 0x1fff, RM9K_GE_RESOURCE_MSTAT, &excite_titan_resource),
319 RINIT(0x2000, 0x212f, RM9K_GE_RESOURCE_PKTPROC, &excite_titan_resource),
320 RINIT(0x5140, 0x5227, RM9K_GE_RESOURCE_XDMA, &excite_titan_resource),
321 RINIT(0x4870, 0x489f, RM9K_GE_RESOURCE_FIFO_RX, &excite_titan_resource),
322 RINIT(0x494c, 0x4957, RM9K_GE_RESOURCE_FIFO_TX, &excite_titan_resource),
323 RINIT(0x0000, 0x007f, RM9K_GE_RESOURCE_FIFOMEM_RX, &excite_fifomem_resource),
324 RINIT(0x0080, 0x00ff, RM9K_GE_RESOURCE_FIFOMEM_TX, &excite_fifomem_resource),
325 RINIT(0x0180, 0x019f, RM9K_GE_RESOURCE_PHY, &excite_titan_resource),
326 RINIT(0x0000, 0x03ff, RM9K_GE_RESOURCE_DMADESC_RX, &excite_scram_resource),
327 RINIT(0x0400, 0x07ff, RM9K_GE_RESOURCE_DMADESC_TX, &excite_scram_resource),
328 RINIT(slice_eth, slice_eth, RM9K_GE_RESOURCE_GPI_SLICE, &excite_gpislice_resource),
329 RINIT(0, 0, RM9K_GE_RESOURCE_MDIO_CHANNEL, &excite_mdio_channel_resource),
330 RINIT_IRQ(TITAN_IRQ, RM9K_GE_RESOURCE_IRQ_MAIN),
331 RINIT_IRQ(PHY_IRQ, RM9K_GE_RESOURCE_IRQ_PHY)
332};
333
334static struct platform_device rm9k_ge_pdev = {
335 .name = RM9K_GE_NAME,
336 .id = RM9K_GE_UNIT,
337 .num_resources = ARRAY_SIZE(rm9k_ge_rsrc),
338 .resource = rm9k_ge_rsrc
339};
340
341
342
343/*
344 * Create a platform device for the Ethernet port.
345 */
346static int __init rm9k_ge_devinit(void)
347{
348 u32 reg;
349
350 adjust_resources(rm9k_ge_rsrc, ARRAY_SIZE(rm9k_ge_rsrc));
351
352 /* Power up the slice and configure it. */
353 reg = titan_readl(CPTC1R);
354 reg &= ~(0x11000 << slice_eth);
355 reg |= 0x100 << slice_eth;
356 titan_writel(reg, CPTC1R);
357
358 /* Take the MAC out of reset, reset the DLLs. */
359 reg = titan_readl(CPRR);
360 reg &= ~(0x00030000 << (slice_eth * 2));
361 reg |= 0x3 << (slice_eth * 2);
362 titan_writel(reg, CPRR);
363
364 return platform_device_register(&rm9k_ge_pdev);
365}
366
367device_initcall(rm9k_ge_devinit);
368#endif /* defined(CONFIG_RM9K_GE) || defined(CONFIG_RM9K_GE_MODULE) */
369
370
371
372static int __init excite_setup_devs(void)
373{
374 int res;
375 u32 reg;
376
377 /* Enable xdma and fifo interrupts */
378 reg = titan_readl(0x0050);
379 titan_writel(reg | 0x18000000, 0x0050);
380
381 res = request_resource(&iomem_resource, &excite_titan_resource);
382 if (res)
383 return res;
384 res = request_resource(&iomem_resource, &excite_scram_resource);
385 if (res)
386 return res;
387 res = request_resource(&iomem_resource, &excite_fpga_resource);
388 if (res)
389 return res;
390 res = request_resource(&iomem_resource, &excite_nand_resource);
391 if (res)
392 return res;
393 excite_fpga_resource.flags = excite_fpga_resource.parent->flags &
394 ( IORESOURCE_IO | IORESOURCE_MEM
395 | IORESOURCE_IRQ | IORESOURCE_DMA);
396 excite_nand_resource.flags = excite_nand_resource.parent->flags &
397 ( IORESOURCE_IO | IORESOURCE_MEM
398 | IORESOURCE_IRQ | IORESOURCE_DMA);
399
400 return 0;
401}
402
403arch_initcall(excite_setup_devs);
404
diff --git a/arch/mips/basler/excite/excite_flashtest.c b/arch/mips/basler/excite/excite_flashtest.c
new file mode 100644
index 000000000000..f0024a8e3294
--- /dev/null
+++ b/arch/mips/basler/excite/excite_flashtest.c
@@ -0,0 +1,294 @@
1/*
2* Copyright (C) 2005 by Basler Vision Technologies AG
3* Author: Thies Moeller <thies.moeller@baslerweb.com>
4*
5* This program is free software; you can redistribute it and/or modify
6* it under the terms of the GNU General Public License as published by
7* the Free Software Foundation; either version 2 of the License, or
8* (at your option) any later version.
9*
10* This program is distributed in the hope that it will be useful,
11* but WITHOUT ANY WARRANTY; without even the implied warranty of
12* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13* GNU General Public License for more details.
14*
15* You should have received a copy of the GNU General Public License
16* along with this program; if not, write to the Free Software
17* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19
20#include <linux/module.h>
21#include <linux/types.h>
22#include <linux/init.h>
23#include <linux/kernel.h>
24#include <linux/string.h>
25#include <linux/ioport.h>
26#include <linux/device.h>
27#include <linux/delay.h>
28#include <linux/err.h>
29#include <linux/kernel.h>
30
31#include <excite.h>
32
33#include <asm/io.h>
34
35#include <linux/mtd/mtd.h>
36#include <linux/mtd/nand.h>
37#include <linux/mtd/nand_ecc.h>
38#include <linux/mtd/partitions.h>
39#include <asm/rm9k-ocd.h> // for ocd_write
40#include <linux/workqueue.h> // for queue
41
42#include "excite_nandflash.h"
43#include "nandflash.h"
44
45#define PFX "excite flashtest: "
46typedef void __iomem *io_reg_t;
47
48#define io_readb(__a__) __raw_readb((__a__))
49#define io_writeb(__v__, __a__) __raw_writeb((__v__), (__a__))
50
51
52
53static inline const struct resource *excite_nandflash_get_resource(
54 struct platform_device *d, unsigned long flags, const char *basename)
55{
56 const char fmt[] = "%s_%u";
57 char buf[80];
58
59 if (unlikely(snprintf(buf, sizeof buf, fmt, basename, d->id) >= sizeof buf))
60 return NULL;
61
62 return platform_get_resource_byname(d, flags, buf);
63}
64
65static inline io_reg_t
66excite_nandflash_map_regs(struct platform_device *d, const char *basename)
67{
68 void *result = NULL;
69 const struct resource *const r =
70 excite_nandflash_get_resource(d, IORESOURCE_MEM, basename);
71 if (r)
72 result = ioremap_nocache(r->start, r->end + 1 - r->start);
73 return result;
74}
75
76/* controller and mtd information */
77
78struct excite_nandflash_drvdata {
79 struct mtd_info board_mtd;
80 struct nand_chip board_chip;
81 io_reg_t regs;
82};
83
84
85/* command and control functions */
86static void excite_nandflash_hwcontrol(struct mtd_info *mtd, int cmd)
87{
88 struct nand_chip *this = mtd->priv;
89 io_reg_t regs = container_of(mtd,struct excite_nandflash_drvdata,board_mtd)->regs;
90
91 switch (cmd) {
92 /* Select the command latch */
93 case NAND_CTL_SETCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_CMD;
94 break;
95 /* Deselect the command latch */
96 case NAND_CTL_CLRCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
97 break;
98 /* Select the address latch */
99 case NAND_CTL_SETALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_ADDR;
100 break;
101 /* Deselect the address latch */
102 case NAND_CTL_CLRALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
103 break;
104 /* Select the chip -- not used */
105 case NAND_CTL_SETNCE:
106 break;
107 /* Deselect the chip -- not used */
108 case NAND_CTL_CLRNCE:
109 break;
110 }
111
112 this->IO_ADDR_R = this->IO_ADDR_W;
113}
114
115/* excite_nandflash_devready()
116 *
117 * returns 0 if the nand is busy, 1 if it is ready
118 */
119static int excite_nandflash_devready(struct mtd_info *mtd)
120{
121 struct excite_nandflash_drvdata *drvdata =
122 container_of(mtd, struct excite_nandflash_drvdata, board_mtd);
123
124 return io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
125}
126
127/* device management functions */
128
129/* excite_nandflash_remove
130 *
131 * called by device layer to remove the driver
132 * the binding to the mtd and all allocated
133 * resources are released
134 */
135static int excite_nandflash_remove(struct device *dev)
136{
137 struct excite_nandflash_drvdata *this = dev_get_drvdata(dev);
138
139 pr_info(PFX "remove");
140
141 dev_set_drvdata(dev, NULL);
142
143 if (this == NULL) {
144 pr_debug(PFX "call remove without private data!!");
145 return 0;
146 }
147
148
149 /* free the common resources */
150 if (this->regs != NULL) {
151 iounmap(this->regs);
152 this->regs = NULL;
153 }
154
155 kfree(this);
156
157 return 0;
158}
159
160static int elapsed;
161
162void my_workqueue_handler(void *arg)
163{
164 elapsed = 1;
165}
166
167DECLARE_WORK(sigElapsed, my_workqueue_handler, 0);
168
169
170/* excite_nandflash_probe
171 *
172 * called by device layer when it finds a device matching
173 * one our driver can handled. This code checks to see if
174 * it can allocate all necessary resources then calls the
175 * nand layer to look for devices
176*/
177static int excite_nandflash_probe(struct device *dev)
178{
179 struct platform_device *pdev = to_platform_device(dev);
180
181 struct excite_nandflash_drvdata *drvdata; /* private driver data */
182 struct nand_chip *board_chip; /* private flash chip data */
183 struct mtd_info *board_mtd; /* mtd info for this board */
184
185 int err = 0;
186 int count = 0;
187 struct timeval tv,endtv;
188 unsigned int dt;
189
190 pr_info(PFX "probe dev: (%p)\n", dev);
191
192 pr_info(PFX "adjust LB timing\n");
193 ocd_writel(0x00000330, LDP2);
194
195 drvdata = kmalloc(sizeof(*drvdata), GFP_KERNEL);
196 if (unlikely(!drvdata)) {
197 printk(KERN_ERR PFX "no memory for drvdata\n");
198 err = -ENOMEM;
199 goto mem_error;
200 }
201
202 /* Initialize structures */
203 memset(drvdata, 0, sizeof(*drvdata));
204
205 /* bind private data into driver */
206 dev_set_drvdata(dev, drvdata);
207
208 /* allocate and map the resource */
209 drvdata->regs =
210 excite_nandflash_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
211
212 if (unlikely(!drvdata->regs)) {
213 printk(KERN_ERR PFX "cannot reserve register region\n");
214 err = -ENXIO;
215 goto io_error;
216 }
217
218 /* initialise our chip */
219 board_chip = &drvdata->board_chip;
220
221 board_chip->IO_ADDR_R = drvdata->regs + EXCITE_NANDFLASH_DATA;
222 board_chip->IO_ADDR_W = drvdata->regs + EXCITE_NANDFLASH_DATA;
223
224 board_chip->hwcontrol = excite_nandflash_hwcontrol;
225 board_chip->dev_ready = excite_nandflash_devready;
226
227 board_chip->chip_delay = 25;
228 #if 0
229 /* TODO: speedup the initial scan */
230 board_chip->options = NAND_USE_FLASH_BBT;
231 #endif
232 board_chip->eccmode = NAND_ECC_SOFT;
233
234 /* link chip to mtd */
235 board_mtd = &drvdata->board_mtd;
236 board_mtd->priv = board_chip;
237
238
239 pr_info(PFX "FlashTest\n");
240 elapsed = 0;
241/* schedule_delayed_work(&sigElapsed, 1*HZ);
242 while (!elapsed) {
243 io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
244 count++;
245 }
246 pr_info(PFX "reads in 1 sec --> %d\n",count);
247*/
248 do_gettimeofday(&tv);
249 for (count = 0 ; count < 1000000; count ++) {
250 io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
251 }
252 do_gettimeofday(&endtv);
253 dt = (endtv.tv_sec - tv.tv_sec) * 1000000 + endtv.tv_usec - tv.tv_usec;
254 pr_info(PFX "%8d us timeval\n",dt);
255 pr_info(PFX "EndFlashTest\n");
256
257/* return with error to unload everything
258*/
259io_error:
260 iounmap(drvdata->regs);
261
262mem_error:
263 kfree(drvdata);
264
265 if (err == 0)
266 err = -EINVAL;
267 return err;
268}
269
270static struct device_driver excite_nandflash_driver = {
271 .name = "excite_nand",
272 .bus = &platform_bus_type,
273 .probe = excite_nandflash_probe,
274 .remove = excite_nandflash_remove,
275};
276
277static int __init excite_nandflash_init(void)
278{
279 pr_info(PFX "register Driver (Rev: $Revision:$)\n");
280 return driver_register(&excite_nandflash_driver);
281}
282
283static void __exit excite_nandflash_exit(void)
284{
285 driver_unregister(&excite_nandflash_driver);
286 pr_info(PFX "Driver unregistered");
287}
288
289module_init(excite_nandflash_init);
290module_exit(excite_nandflash_exit);
291
292MODULE_AUTHOR("Thies Moeller <thies.moeller@baslerweb.com>");
293MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
294MODULE_LICENSE("GPL");
diff --git a/arch/mips/basler/excite/excite_fpga.h b/arch/mips/basler/excite/excite_fpga.h
new file mode 100644
index 000000000000..38fcda703a0b
--- /dev/null
+++ b/arch/mips/basler/excite/excite_fpga.h
@@ -0,0 +1,80 @@
1#ifndef EXCITE_FPGA_H_INCLUDED
2#define EXCITE_FPGA_H_INCLUDED
3
4
5/**
6 * Adress alignment of the individual FPGA bytes.
7 * The address arrangement of the individual bytes of the FPGA is two
8 * byte aligned at the embedded MK2 platform.
9 */
10#ifdef EXCITE_CCI_FPGA_MK2
11typedef unsigned char excite_cci_fpga_align_t __attribute__ ((aligned(2)));
12#else
13typedef unsigned char excite_cci_fpga_align_t;
14#endif
15
16
17/**
18 * Size of Dual Ported RAM.
19 */
20#define EXCITE_DPR_SIZE 263
21
22
23/**
24 * Size of Reserved Status Fields in Dual Ported RAM.
25 */
26#define EXCITE_DPR_STATUS_SIZE 7
27
28
29
30/**
31 * FPGA.
32 * Hardware register layout of the FPGA interface. The FPGA must accessed
33 * byte wise solely.
34 * @see EXCITE_CCI_DPR_MK2
35 */
36typedef struct excite_fpga {
37
38 /**
39 * Dual Ported RAM.
40 */
41 excite_cci_fpga_align_t dpr[EXCITE_DPR_SIZE];
42
43 /**
44 * Status.
45 */
46 excite_cci_fpga_align_t status[EXCITE_DPR_STATUS_SIZE];
47
48#ifdef EXCITE_CCI_FPGA_MK2
49 /**
50 * RM9000 Interrupt.
51 * Write access initiates interrupt at the RM9000 (MIPS) processor of the eXcite.
52 */
53 excite_cci_fpga_align_t rm9k_int;
54#else
55 /**
56 * MK2 Interrupt.
57 * Write access initiates interrupt at the ARM processor of the MK2.
58 */
59 excite_cci_fpga_align_t mk2_int;
60
61 excite_cci_fpga_align_t gap[0x1000-0x10f];
62
63 /**
64 * IRQ Source/Acknowledge.
65 */
66 excite_cci_fpga_align_t rm9k_irq_src;
67
68 /**
69 * IRQ Mask.
70 * Set bits enable the related interrupt.
71 */
72 excite_cci_fpga_align_t rm9k_irq_mask;
73#endif
74
75
76} excite_fpga;
77
78
79
80#endif /* ndef EXCITE_FPGA_H_INCLUDED */
diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c
new file mode 100644
index 000000000000..91121e523043
--- /dev/null
+++ b/arch/mips/basler/excite/excite_iodev.c
@@ -0,0 +1,183 @@
1/*
2 * Copyright (C) 2005 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/config.h>
21#include <linux/compiler.h>
22#include <linux/init.h>
23#include <linux/module.h>
24#include <linux/sched.h>
25#include <linux/wait.h>
26#include <linux/poll.h>
27#include <linux/interrupt.h>
28#include <linux/platform_device.h>
29#include <linux/miscdevice.h>
30
31#include "excite_iodev.h"
32
33
34
35static const struct resource *iodev_get_resource(struct platform_device *, const char *, unsigned int);
36static int __init iodev_probe(struct device *);
37static int __exit iodev_remove(struct device *);
38static int iodev_open(struct inode *, struct file *);
39static int iodev_release(struct inode *, struct file *);
40static ssize_t iodev_read(struct file *, char __user *, size_t s, loff_t *);
41static unsigned int iodev_poll(struct file *, struct poll_table_struct *);
42static irqreturn_t iodev_irqhdl(int, void *, struct pt_regs *);
43
44
45
46static const char iodev_name[] = "iodev";
47static unsigned int iodev_irq;
48static DECLARE_WAIT_QUEUE_HEAD(wq);
49
50
51
52static struct file_operations fops =
53{
54 .owner = THIS_MODULE,
55 .open = iodev_open,
56 .release = iodev_release,
57 .read = iodev_read,
58 .poll = iodev_poll
59};
60
61static struct miscdevice miscdev =
62{
63 .minor = MISC_DYNAMIC_MINOR,
64 .name = iodev_name,
65 .fops = &fops
66};
67
68static struct device_driver iodev_driver =
69{
70 .name = (char *) iodev_name,
71 .bus = &platform_bus_type,
72 .owner = THIS_MODULE,
73 .probe = iodev_probe,
74 .remove = __exit_p(iodev_remove)
75};
76
77
78
79static const struct resource *
80iodev_get_resource(struct platform_device *pdv, const char *name,
81 unsigned int type)
82{
83 char buf[80];
84 if (snprintf(buf, sizeof buf, "%s_0", name) >= sizeof buf)
85 return NULL;
86 return platform_get_resource_byname(pdv, type, buf);
87}
88
89
90
91/* No hotplugging on the platform bus - use __init */
92static int __init iodev_probe(struct device *dev)
93{
94 struct platform_device * const pdv = to_platform_device(dev);
95 const struct resource * const ri =
96 iodev_get_resource(pdv, IODEV_RESOURCE_IRQ, IORESOURCE_IRQ);
97
98 if (unlikely(!ri))
99 return -ENXIO;
100
101 iodev_irq = ri->start;
102 return misc_register(&miscdev);
103}
104
105
106
107static int __exit iodev_remove(struct device *dev)
108{
109 return misc_deregister(&miscdev);
110}
111
112
113
114static int iodev_open(struct inode *i, struct file *f)
115{
116 return request_irq(iodev_irq, iodev_irqhdl, SA_INTERRUPT,
117 iodev_name, &miscdev);
118}
119
120
121
122static int iodev_release(struct inode *i, struct file *f)
123{
124 free_irq(iodev_irq, &miscdev);
125 return 0;
126}
127
128
129
130
131static ssize_t
132iodev_read(struct file *f, char __user *d, size_t s, loff_t *o)
133{
134 ssize_t ret;
135 DEFINE_WAIT(w);
136
137 prepare_to_wait(&wq, &w, TASK_INTERRUPTIBLE);
138 if (!signal_pending(current))
139 schedule();
140 ret = signal_pending(current) ? -ERESTARTSYS : 0;
141 finish_wait(&wq, &w);
142 return ret;
143}
144
145
146static unsigned int iodev_poll(struct file *f, struct poll_table_struct *p)
147{
148 poll_wait(f, &wq, p);
149 return POLLOUT | POLLWRNORM;
150}
151
152
153
154
155static irqreturn_t iodev_irqhdl(int irq, void *ctxt, struct pt_regs *regs)
156{
157 wake_up(&wq);
158 return IRQ_HANDLED;
159}
160
161
162
163static int __init iodev_init_module(void)
164{
165 return driver_register(&iodev_driver);
166}
167
168
169
170static void __exit iodev_cleanup_module(void)
171{
172 driver_unregister(&iodev_driver);
173}
174
175module_init(iodev_init_module);
176module_exit(iodev_cleanup_module);
177
178
179
180MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
181MODULE_DESCRIPTION("Basler eXcite i/o interrupt handler");
182MODULE_VERSION("0.0");
183MODULE_LICENSE("GPL");
diff --git a/arch/mips/basler/excite/excite_iodev.h b/arch/mips/basler/excite/excite_iodev.h
new file mode 100644
index 000000000000..cbfbb5d2ee62
--- /dev/null
+++ b/arch/mips/basler/excite/excite_iodev.h
@@ -0,0 +1,10 @@
1#ifndef __EXCITE_IODEV_H__
2#define __EXCITE_IODEV_H__
3
4/* Device name */
5#define IODEV_NAME "iodev"
6
7/* Resource names */
8#define IODEV_RESOURCE_IRQ "excite_iodev_irq"
9
10#endif /* __EXCITE_IODEV_H__ */
diff --git a/arch/mips/basler/excite/excite_irq.c b/arch/mips/basler/excite/excite_irq.c
new file mode 100644
index 000000000000..511ad8730f54
--- /dev/null
+++ b/arch/mips/basler/excite/excite_irq.c
@@ -0,0 +1,129 @@
1/*
2 * Copyright (C) by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslereb.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/kernel_stat.h>
23#include <linux/module.h>
24#include <linux/signal.h>
25#include <linux/sched.h>
26#include <linux/types.h>
27#include <linux/interrupt.h>
28#include <linux/ioport.h>
29#include <linux/timex.h>
30#include <linux/slab.h>
31#include <linux/random.h>
32#include <asm/bitops.h>
33#include <asm/bootinfo.h>
34#include <asm/io.h>
35#include <asm/irq.h>
36#include <asm/irq_cpu.h>
37#include <asm/mipsregs.h>
38#include <asm/system.h>
39#include <asm/rm9k-ocd.h>
40
41#include <excite.h>
42
43extern asmlinkage void excite_handle_int(void);
44
45/*
46 * Initialize the interrupt handler
47 */
48void __init arch_init_irq(void)
49{
50 mips_cpu_irq_init(0);
51 rm7k_cpu_irq_init(8);
52 rm9k_cpu_irq_init(12);
53
54#ifdef CONFIG_KGDB
55 excite_kgdb_init();
56#endif
57}
58
59asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
60{
61 const u32
62 interrupts = read_c0_cause() >> 8,
63 mask = ((read_c0_status() >> 8) & 0x000000ff) |
64 (read_c0_intcontrol() & 0x0000ff00),
65 pending = interrupts & mask;
66 u32 msgintflags, msgintmask, msgint;
67
68 /* process timer interrupt */
69 if (pending & (1 << TIMER_IRQ)) {
70 do_IRQ(TIMER_IRQ, regs);
71 return;
72 }
73
74 /* Process PCI interrupts */
75#if USB_IRQ < 10
76 msgintflags = ocd_readl(INTP0Status0 + (USB_MSGINT / 0x20 * 0x10));
77 msgintmask = ocd_readl(INTP0Mask0 + (USB_MSGINT / 0x20 * 0x10));
78 msgint = msgintflags & msgintmask & (0x1 << (USB_MSGINT % 0x20));
79 if ((pending & (1 << USB_IRQ)) && msgint) {
80#else
81 if (pending & (1 << USB_IRQ)) {
82#endif
83 do_IRQ(USB_IRQ, regs);
84 return;
85 }
86
87 /* Process TITAN interrupts */
88 msgintflags = ocd_readl(INTP0Status0 + (TITAN_MSGINT / 0x20 * 0x10));
89 msgintmask = ocd_readl(INTP0Mask0 + (TITAN_MSGINT / 0x20 * 0x10));
90 msgint = msgintflags & msgintmask & (0x1 << (TITAN_MSGINT % 0x20));
91 if ((pending & (1 << TITAN_IRQ)) && msgint) {
92 ocd_writel(msgint, INTP0Clear0 + (TITAN_MSGINT / 0x20 * 0x10));
93#if defined(CONFIG_KGDB)
94 excite_kgdb_inthdl(regs);
95#endif
96 do_IRQ(TITAN_IRQ, regs);
97 return;
98 }
99
100 /* Process FPGA line #0 interrupts */
101 msgintflags = ocd_readl(INTP0Status0 + (FPGA0_MSGINT / 0x20 * 0x10));
102 msgintmask = ocd_readl(INTP0Mask0 + (FPGA0_MSGINT / 0x20 * 0x10));
103 msgint = msgintflags & msgintmask & (0x1 << (FPGA0_MSGINT % 0x20));
104 if ((pending & (1 << FPGA0_IRQ)) && msgint) {
105 do_IRQ(FPGA0_IRQ, regs);
106 return;
107 }
108
109 /* Process FPGA line #1 interrupts */
110 msgintflags = ocd_readl(INTP0Status0 + (FPGA1_MSGINT / 0x20 * 0x10));
111 msgintmask = ocd_readl(INTP0Mask0 + (FPGA1_MSGINT / 0x20 * 0x10));
112 msgint = msgintflags & msgintmask & (0x1 << (FPGA1_MSGINT % 0x20));
113 if ((pending & (1 << FPGA1_IRQ)) && msgint) {
114 do_IRQ(FPGA1_IRQ, regs);
115 return;
116 }
117
118 /* Process PHY interrupts */
119 msgintflags = ocd_readl(INTP0Status0 + (PHY_MSGINT / 0x20 * 0x10));
120 msgintmask = ocd_readl(INTP0Mask0 + (PHY_MSGINT / 0x20 * 0x10));
121 msgint = msgintflags & msgintmask & (0x1 << (PHY_MSGINT % 0x20));
122 if ((pending & (1 << PHY_IRQ)) && msgint) {
123 do_IRQ(PHY_IRQ, regs);
124 return;
125 }
126
127 /* Process spurious interrupts */
128 spurious_interrupt(regs);
129}
diff --git a/arch/mips/basler/excite/excite_procfs.c b/arch/mips/basler/excite/excite_procfs.c
new file mode 100644
index 000000000000..c62be0341fb8
--- /dev/null
+++ b/arch/mips/basler/excite/excite_procfs.c
@@ -0,0 +1,81 @@
1/*
2 * Copyright (C) 2004, 2005 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 *
5 * Procfs support for Basler eXcite
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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/config.h>
23#include <linux/proc_fs.h>
24#include <linux/stat.h>
25#include <asm/page.h>
26#include <asm/io.h>
27#include <asm/system.h>
28#include <asm/rm9k-ocd.h>
29
30#include <excite.h>
31
32static int excite_get_unit_id(char *buf, char **addr, off_t offs, int size)
33{
34 const int len = snprintf(buf, PAGE_SIZE, "%06x", unit_id);
35 const int w = len - offs;
36 *addr = buf + offs;
37 return w < size ? w : size;
38}
39
40static int
41excite_bootrom_read(char *page, char **start, off_t off, int count,
42 int *eof, void *data)
43{
44 void __iomem * src;
45
46 if (off >= EXCITE_SIZE_BOOTROM) {
47 *eof = 1;
48 return 0;
49 }
50
51 if ((off + count) > EXCITE_SIZE_BOOTROM)
52 count = EXCITE_SIZE_BOOTROM - off;
53
54 src = ioremap(EXCITE_PHYS_BOOTROM + off, count);
55 if (src) {
56 memcpy_fromio(page, src, count);
57 iounmap(src);
58 *start = page;
59 } else {
60 count = -ENOMEM;
61 }
62
63 return count;
64}
65
66void excite_procfs_init(void)
67{
68 /* Create & populate /proc/excite */
69 struct proc_dir_entry * const pdir = proc_mkdir("excite", &proc_root);
70 if (pdir) {
71 struct proc_dir_entry * e;
72
73 e = create_proc_info_entry("unit_id", S_IRUGO, pdir,
74 excite_get_unit_id);
75 if (e) e->size = 6;
76
77 e = create_proc_read_entry("bootrom", S_IRUGO, pdir,
78 excite_bootrom_read, NULL);
79 if (e) e->size = EXCITE_SIZE_BOOTROM;
80 }
81}
diff --git a/arch/mips/basler/excite/excite_prom.c b/arch/mips/basler/excite/excite_prom.c
new file mode 100644
index 000000000000..84724b270753
--- /dev/null
+++ b/arch/mips/basler/excite/excite_prom.c
@@ -0,0 +1,148 @@
1/*
2 * Copyright (C) 2004, 2005 by Thomas Koeller (thomas.koeller@baslerweb.com)
3 * Based on the PMC-Sierra Yosemite board support by Ralf Baechle and
4 * Manish Lachwani.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
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/config.h>
22#include <linux/init.h>
23#include <linux/sched.h>
24#include <linux/mm.h>
25#include <linux/delay.h>
26#include <linux/smp.h>
27#include <linux/module.h>
28#include <asm/io.h>
29#include <asm/pgtable.h>
30#include <asm/processor.h>
31#include <asm/reboot.h>
32#include <asm/system.h>
33#include <asm/bootinfo.h>
34#include <asm/string.h>
35
36#include <excite.h>
37
38/* This struct is used by Redboot to pass arguments to the kernel */
39typedef struct
40{
41 char *name;
42 char *val;
43} t_env_var;
44
45struct parmblock {
46 t_env_var memsize;
47 t_env_var modetty0;
48 t_env_var ethaddr;
49 t_env_var env_end;
50 char *argv[2];
51 char text[0];
52};
53
54static unsigned int prom_argc;
55static const char ** prom_argv;
56static const t_env_var * prom_env;
57
58static void prom_halt(void) __attribute__((noreturn));
59static void prom_exit(void) __attribute__((noreturn));
60
61
62
63const char *get_system_type(void)
64{
65 return "Basler eXcite";
66}
67
68/*
69 * Halt the system
70 */
71static void prom_halt(void)
72{
73 printk(KERN_NOTICE "\n** System halted.\n");
74 while (1)
75 asm volatile (
76 "\t.set\tmips3\n"
77 "\twait\n"
78 "\t.set\tmips0\n"
79 );
80}
81
82/*
83 * Reset the CPU and re-enter Redboot
84 */
85static void prom_exit(void)
86{
87 unsigned int i;
88 volatile unsigned char * const flg =
89 (volatile unsigned char *) (EXCITE_ADDR_FPGA + EXCITE_FPGA_DPR);
90
91 /* Clear the watchdog reset flag, set the reboot flag */
92 *flg &= ~0x01;
93 *flg |= 0x80;
94
95 for (i = 0; i < 10; i++) {
96 *(volatile unsigned char *) (EXCITE_ADDR_FPGA + EXCITE_FPGA_SYSCTL) = 0x02;
97 iob();
98 mdelay(1000);
99 }
100
101 printk(KERN_NOTICE "Reset failed\n");
102 prom_halt();
103}
104
105static const char __init *prom_getenv(char *name)
106{
107 const t_env_var * p;
108 for (p = prom_env; p->name != NULL; p++)
109 if(strcmp(name, p->name) == 0)
110 break;
111 return p->val;
112}
113
114/*
115 * Init routine which accepts the variables from Redboot
116 */
117void __init prom_init(void)
118{
119 const struct parmblock * const pb = (struct parmblock *) fw_arg2;
120
121 prom_argc = fw_arg0;
122 prom_argv = (const char **) fw_arg1;
123 prom_env = &pb->memsize;
124
125 /* Callbacks for halt, restart */
126 _machine_restart = (void (*)(char *)) prom_exit;
127 _machine_halt = prom_halt;
128
129#ifdef CONFIG_32BIT
130 /* copy command line */
131 strcpy(arcs_cmdline, prom_argv[1]);
132 memsize = simple_strtol(prom_getenv("memsize"), NULL, 16);
133 strcpy(modetty, prom_getenv("modetty0"));
134#endif /* CONFIG_32BIT */
135
136#ifdef CONFIG_64BIT
137# error 64 bit support not implemented
138#endif /* CONFIG_64BIT */
139
140 mips_machgroup = MACH_GROUP_TITAN;
141 mips_machtype = MACH_TITAN_EXCITE;
142}
143
144/* This is called from free_initmem(), so we need to provide it */
145void __init prom_free_prom_memory(void)
146{
147 /* Nothing to do */
148}
diff --git a/arch/mips/basler/excite/excite_setup.c b/arch/mips/basler/excite/excite_setup.c
new file mode 100644
index 000000000000..005b025605e6
--- /dev/null
+++ b/arch/mips/basler/excite/excite_setup.c
@@ -0,0 +1,307 @@
1/*
2 * Copyright (C) 2004, 2005 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 * Based on the PMC-Sierra Yosemite board support by Ralf Baechle and
5 * Manish Lachwani.
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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/config.h>
23#include <linux/types.h>
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/string.h>
27#include <linux/tty.h>
28#include <linux/serial_core.h>
29#include <linux/serial.h>
30#include <linux/ioport.h>
31#include <linux/spinlock.h>
32#include <asm/bootinfo.h>
33#include <asm/mipsregs.h>
34#include <asm/pgtable-32.h>
35#include <asm/io.h>
36#include <asm/time.h>
37#include <asm/rm9k-ocd.h>
38
39#include <excite.h>
40
41#define TITAN_UART_CLK 25000000
42
43#if 1
44/* normal serial port assignment */
45#define REGBASE_SER0 0x0208
46#define REGBASE_SER1 0x0238
47#define MASK_SER0 0x1
48#define MASK_SER1 0x2
49#else
50/* serial ports swapped */
51#define REGBASE_SER0 0x0238
52#define REGBASE_SER1 0x0208
53#define MASK_SER0 0x2
54#define MASK_SER1 0x1
55#endif
56
57unsigned long memsize;
58char modetty[30];
59unsigned int titan_irq = TITAN_IRQ;
60static void __iomem * ctl_regs;
61u32 unit_id;
62
63volatile void __iomem * const ocd_base = (void *) (EXCITE_ADDR_OCD);
64volatile void __iomem * const titan_base = (void *) (EXCITE_ADDR_TITAN);
65
66/* Protect access to shared GPI registers */
67spinlock_t titan_lock = SPIN_LOCK_UNLOCKED;
68int titan_irqflags;
69
70
71static void excite_timer_init(void)
72{
73 const u32 modebit5 = ocd_readl(0x00e4);
74 unsigned int
75 mult = ((modebit5 >> 11) & 0x1f) + 2,
76 div = ((modebit5 >> 16) & 0x1f) + 2;
77
78 if (div == 33) div = 1;
79 mips_hpt_frequency = EXCITE_CPU_EXT_CLOCK * mult / div / 2;
80}
81
82static void excite_timer_setup(struct irqaction *irq)
83{
84 /* The eXcite platform uses the alternate timer interrupt */
85 set_c0_intcontrol(0x80);
86 setup_irq(TIMER_IRQ, irq);
87}
88
89static int __init excite_init_console(void)
90{
91#if defined(CONFIG_SERIAL_8250)
92 static __initdata char serr[] =
93 KERN_ERR "Serial port #%u setup failed\n";
94 struct uart_port up;
95
96 /* Take the DUART out of reset */
97 titan_writel(0x00ff1cff, CPRR);
98
99#if defined(CONFIG_KGDB) || (CONFIG_SERIAL_8250_NR_UARTS > 1)
100 /* Enable both ports */
101 titan_writel(MASK_SER0 | MASK_SER1, UACFG);
102#else
103 /* Enable port #0 only */
104 titan_writel(MASK_SER0, UACFG);
105#endif /* defined(CONFIG_KGDB) */
106
107 /*
108 * Set up serial port #0. Do not use autodetection; the result is
109 * not what we want.
110 */
111 memset(&up, 0, sizeof(up));
112 up.membase = (char *) titan_addr(REGBASE_SER0);
113 up.irq = TITAN_IRQ;
114 up.uartclk = TITAN_UART_CLK;
115 up.regshift = 0;
116 up.iotype = UPIO_MEM32;
117 up.type = PORT_RM9000;
118 up.flags = UPF_SHARE_IRQ;
119 up.line = 0;
120 if (early_serial_setup(&up))
121 printk(serr, up.line);
122
123#if CONFIG_SERIAL_8250_NR_UARTS > 1
124 /* And now for port #1. */
125 up.membase = (char *) titan_addr(REGBASE_SER1);
126 up.line = 1;
127 if (early_serial_setup(&up))
128 printk(serr, up.line);
129#endif /* CONFIG_SERIAL_8250_NR_UARTS > 1 */
130#else
131 /* Leave the DUART in reset */
132 titan_writel(0x00ff3cff, CPRR);
133#endif /* defined(CONFIG_SERIAL_8250) */
134
135 return 0;
136}
137
138static int __init excite_platform_init(void)
139{
140 unsigned int i;
141 unsigned char buf[3];
142 u8 reg;
143 void __iomem * dpr;
144
145 /* BIU buffer allocations */
146 ocd_writel(8, CPURSLMT); /* CPU */
147 titan_writel(4, CPGRWL); /* GPI / Ethernet */
148
149 /* Map control registers located in FPGA */
150 ctl_regs = ioremap_nocache(EXCITE_PHYS_FPGA + EXCITE_FPGA_SYSCTL, 16);
151 if (!ctl_regs)
152 panic("eXcite: failed to map platform control registers\n");
153 memcpy_fromio(buf, ctl_regs + 2, ARRAY_SIZE(buf));
154 unit_id = buf[0] | (buf[1] << 8) | (buf[2] << 16);
155
156 /* Clear the reboot flag */
157 dpr = ioremap_nocache(EXCITE_PHYS_FPGA + EXCITE_FPGA_DPR, 1);
158 reg = __raw_readb(dpr);
159 __raw_writeb(reg & 0x7f, dpr);
160 iounmap(dpr);
161
162 /* Interrupt controller setup */
163 for (i = INTP0Status0; i < INTP0Status0 + 0x80; i += 0x10) {
164 ocd_writel(0x00000000, i + 0x04);
165 ocd_writel(0xffffffff, i + 0x0c);
166 }
167 ocd_writel(0x2, NMICONFIG);
168
169 ocd_writel(0x1 << (TITAN_MSGINT % 0x20),
170 INTP0Mask0 + (0x10 * (TITAN_MSGINT / 0x20)));
171 ocd_writel((0x1 << (FPGA0_MSGINT % 0x20))
172 | ocd_readl(INTP0Mask0 + (0x10 * (FPGA0_MSGINT / 0x20))),
173 INTP0Mask0 + (0x10 * (FPGA0_MSGINT / 0x20)));
174 ocd_writel((0x1 << (FPGA1_MSGINT % 0x20))
175 | ocd_readl(INTP0Mask0 + (0x10 * (FPGA1_MSGINT / 0x20))),
176 INTP0Mask0 + (0x10 * (FPGA1_MSGINT / 0x20)));
177 ocd_writel((0x1 << (PHY_MSGINT % 0x20))
178 | ocd_readl(INTP0Mask0 + (0x10 * (PHY_MSGINT / 0x20))),
179 INTP0Mask0 + (0x10 * (PHY_MSGINT / 0x20)));
180#if USB_IRQ < 10
181 ocd_writel((0x1 << (USB_MSGINT % 0x20))
182 | ocd_readl(INTP0Mask0 + (0x10 * (USB_MSGINT / 0x20))),
183 INTP0Mask0 + (0x10 * (USB_MSGINT / 0x20)));
184#endif
185 /* Enable the packet FIFO, XDMA and XDMA arbiter */
186 titan_writel(0x00ff18ff, CPRR);
187
188 /*
189 * Set up the PADMUX. Power down all ethernet slices,
190 * they will be powered up and configured at device startup.
191 */
192 titan_writel(0x00878206, CPTC1R);
193 titan_writel(0x00001100, CPTC0R); /* latch PADMUX, enable WCIMODE */
194
195 /* Reset and enable the FIFO block */
196 titan_writel(0x00000001, SDRXFCIE);
197 titan_writel(0x00000001, SDTXFCIE);
198 titan_writel(0x00000100, SDRXFCIE);
199 titan_writel(0x00000000, SDTXFCIE);
200
201 /*
202 * Initialize the common interrupt shared by all components of
203 * the GPI/Ethernet subsystem.
204 */
205 titan_writel((EXCITE_PHYS_OCD >> 12), CPCFG0);
206 titan_writel(TITAN_MSGINT, CPCFG1);
207
208 /*
209 * XDMA configuration.
210 * In order for the XDMA to be sharable among multiple drivers,
211 * the setup must be done here in the platform. The reason is that
212 * this setup can only be done while the XDMA is in reset. If this
213 * were done in a driver, it would interrupt all other drivers
214 * using the XDMA.
215 */
216 titan_writel(0x80021dff, GXCFG); /* XDMA reset */
217 titan_writel(0x00000000, CPXCISRA);
218 titan_writel(0x00000000, CPXCISRB); /* clear pending interrupts */
219#if defined (CONFIG_HIGHMEM)
220# error change for HIGHMEM support!
221#else
222 titan_writel(0x00000000, GXDMADRPFX); /* buffer address prefix */
223#endif
224 titan_writel(0, GXDMA_DESCADR);
225
226 for (i = 0x5040; i <= 0x5300; i += 0x0040)
227 titan_writel(0x80080000, i); /* reset channel */
228
229 titan_writel((0x1 << 29) /* no sparse tx descr. */
230 | (0x1 << 28) /* no sparse rx descr. */
231 | (0x1 << 23) | (0x1 << 24) /* descriptor coherency */
232 | (0x1 << 21) | (0x1 << 22) /* data coherency */
233 | (0x1 << 17)
234 | 0x1dff,
235 GXCFG);
236
237#if defined(CONFIG_SMP)
238# error No SMP support
239#else
240 /* All interrupts go to core #0 only. */
241 titan_writel(0x1f007fff, CPDST0A);
242 titan_writel(0x00000000, CPDST0B);
243 titan_writel(0x0000ff3f, CPDST1A);
244 titan_writel(0x00000000, CPDST1B);
245 titan_writel(0x00ffffff, CPXDSTA);
246 titan_writel(0x00000000, CPXDSTB);
247#endif
248
249 /* Enable DUART interrupts, disable everything else. */
250 titan_writel(0x04000000, CPGIG0ER);
251 titan_writel(0x000000c0, CPGIG1ER);
252
253 excite_procfs_init();
254 return 0;
255}
256
257void __init plat_setup(void)
258{
259 volatile u32 * const boot_ocd_base = (u32 *) 0xbf7fc000;
260
261 /* Announce RAM to system */
262 add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
263
264 /* Set up timer initialization hooks */
265 board_time_init = excite_timer_init;
266 board_timer_setup = excite_timer_setup;
267
268 /* Set up the peripheral address map */
269 *(boot_ocd_base + (LKB9 / sizeof (u32))) = 0;
270 *(boot_ocd_base + (LKB10 / sizeof (u32))) = 0;
271 *(boot_ocd_base + (LKB11 / sizeof (u32))) = 0;
272 *(boot_ocd_base + (LKB12 / sizeof (u32))) = 0;
273 wmb();
274 *(boot_ocd_base + (LKB0 / sizeof (u32))) = EXCITE_PHYS_OCD >> 4;
275 wmb();
276
277 ocd_writel((EXCITE_PHYS_TITAN >> 4) | 0x1UL, LKB5);
278 ocd_writel(((EXCITE_SIZE_TITAN >> 4) & 0x7fffff00) - 0x100, LKM5);
279 ocd_writel((EXCITE_PHYS_SCRAM >> 4) | 0x1UL, LKB13);
280 ocd_writel(((EXCITE_SIZE_SCRAM >> 4) & 0xffffff00) - 0x100, LKM13);
281
282 /* Local bus slot #0 */
283 ocd_writel(0x00040510, LDP0);
284 ocd_writel((EXCITE_PHYS_BOOTROM >> 4) | 0x1UL, LKB9);
285 ocd_writel(((EXCITE_SIZE_BOOTROM >> 4) & 0x03ffff00) - 0x100, LKM9);
286
287 /* Local bus slot #2 */
288 ocd_writel(0x00000330, LDP2);
289 ocd_writel((EXCITE_PHYS_FPGA >> 4) | 0x1, LKB11);
290 ocd_writel(((EXCITE_SIZE_FPGA >> 4) - 0x100) & 0x03ffff00, LKM11);
291
292 /* Local bus slot #3 */
293 ocd_writel(0x00123413, LDP3);
294 ocd_writel((EXCITE_PHYS_NAND >> 4) | 0x1, LKB12);
295 ocd_writel(((EXCITE_SIZE_NAND >> 4) - 0x100) & 0x03ffff00, LKM12);
296}
297
298
299
300console_initcall(excite_init_console);
301arch_initcall(excite_platform_init);
302
303EXPORT_SYMBOL(titan_lock);
304EXPORT_SYMBOL(titan_irqflags);
305EXPORT_SYMBOL(titan_irq);
306EXPORT_SYMBOL(ocd_base);
307EXPORT_SYMBOL(titan_base);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 00:52:33 -0500