diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 11:14:18 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 11:14:18 -0500 |
commit | 05e5027efc9c0bb6d1d04cde279afbafca0a7929 (patch) | |
tree | 733b0291db6cc6c13844b97e3c7bf593b6711d66 /drivers/ipack/carriers | |
parent | 76859725ad31ac480d55bf176e5bbe0f9ab6e6cb (diff) |
Staging: ipack: move out of staging
The ipack subsystem is cleaned up enough to now move out of the staging
tree, and into drivers/ipack.
Cc: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Cc: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/ipack/carriers')
-rw-r--r-- | drivers/ipack/carriers/Kconfig | 7 | ||||
-rw-r--r-- | drivers/ipack/carriers/Makefile | 1 | ||||
-rw-r--r-- | drivers/ipack/carriers/tpci200.c | 627 | ||||
-rw-r--r-- | drivers/ipack/carriers/tpci200.h | 168 |
4 files changed, 803 insertions, 0 deletions
diff --git a/drivers/ipack/carriers/Kconfig b/drivers/ipack/carriers/Kconfig new file mode 100644 index 000000000000..922ff5c35acc --- /dev/null +++ b/drivers/ipack/carriers/Kconfig | |||
@@ -0,0 +1,7 @@ | |||
1 | config BOARD_TPCI200 | ||
2 | tristate "Support for the TEWS TPCI-200 IndustryPack carrier board" | ||
3 | depends on IPACK_BUS | ||
4 | depends on PCI | ||
5 | help | ||
6 | This driver adds support for the TEWS TPCI200 IndustryPack carrier board. | ||
7 | default n | ||
diff --git a/drivers/ipack/carriers/Makefile b/drivers/ipack/carriers/Makefile new file mode 100644 index 000000000000..d8b76459300f --- /dev/null +++ b/drivers/ipack/carriers/Makefile | |||
@@ -0,0 +1 @@ | |||
obj-$(CONFIG_BOARD_TPCI200) += tpci200.o | |||
diff --git a/drivers/ipack/carriers/tpci200.c b/drivers/ipack/carriers/tpci200.c new file mode 100644 index 000000000000..c1a19b274c23 --- /dev/null +++ b/drivers/ipack/carriers/tpci200.c | |||
@@ -0,0 +1,627 @@ | |||
1 | /** | ||
2 | * tpci200.c | ||
3 | * | ||
4 | * driver for the TEWS TPCI-200 device | ||
5 | * | ||
6 | * Copyright (C) 2009-2012 CERN (www.cern.ch) | ||
7 | * Author: Nicolas Serafini, EIC2 SA | ||
8 | * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com> | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify it | ||
11 | * under the terms of the GNU General Public License as published by the Free | ||
12 | * Software Foundation; version 2 of the License. | ||
13 | */ | ||
14 | |||
15 | #include <linux/module.h> | ||
16 | #include <linux/slab.h> | ||
17 | #include "tpci200.h" | ||
18 | |||
19 | static const u16 tpci200_status_timeout[] = { | ||
20 | TPCI200_A_TIMEOUT, | ||
21 | TPCI200_B_TIMEOUT, | ||
22 | TPCI200_C_TIMEOUT, | ||
23 | TPCI200_D_TIMEOUT, | ||
24 | }; | ||
25 | |||
26 | static const u16 tpci200_status_error[] = { | ||
27 | TPCI200_A_ERROR, | ||
28 | TPCI200_B_ERROR, | ||
29 | TPCI200_C_ERROR, | ||
30 | TPCI200_D_ERROR, | ||
31 | }; | ||
32 | |||
33 | static const size_t tpci200_space_size[IPACK_SPACE_COUNT] = { | ||
34 | [IPACK_IO_SPACE] = TPCI200_IO_SPACE_SIZE, | ||
35 | [IPACK_ID_SPACE] = TPCI200_ID_SPACE_SIZE, | ||
36 | [IPACK_INT_SPACE] = TPCI200_INT_SPACE_SIZE, | ||
37 | [IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_SIZE, | ||
38 | [IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_SIZE, | ||
39 | }; | ||
40 | |||
41 | static const size_t tpci200_space_interval[IPACK_SPACE_COUNT] = { | ||
42 | [IPACK_IO_SPACE] = TPCI200_IO_SPACE_INTERVAL, | ||
43 | [IPACK_ID_SPACE] = TPCI200_ID_SPACE_INTERVAL, | ||
44 | [IPACK_INT_SPACE] = TPCI200_INT_SPACE_INTERVAL, | ||
45 | [IPACK_MEM8_SPACE] = TPCI200_MEM8_SPACE_INTERVAL, | ||
46 | [IPACK_MEM16_SPACE] = TPCI200_MEM16_SPACE_INTERVAL, | ||
47 | }; | ||
48 | |||
49 | static struct tpci200_board *check_slot(struct ipack_device *dev) | ||
50 | { | ||
51 | struct tpci200_board *tpci200; | ||
52 | |||
53 | if (dev == NULL) | ||
54 | return NULL; | ||
55 | |||
56 | |||
57 | tpci200 = dev_get_drvdata(dev->bus->parent); | ||
58 | |||
59 | if (tpci200 == NULL) { | ||
60 | dev_info(&dev->dev, "carrier board not found\n"); | ||
61 | return NULL; | ||
62 | } | ||
63 | |||
64 | if (dev->slot >= TPCI200_NB_SLOT) { | ||
65 | dev_info(&dev->dev, | ||
66 | "Slot [%d:%d] doesn't exist! Last tpci200 slot is %d.\n", | ||
67 | dev->bus->bus_nr, dev->slot, TPCI200_NB_SLOT-1); | ||
68 | return NULL; | ||
69 | } | ||
70 | |||
71 | return tpci200; | ||
72 | } | ||
73 | |||
74 | static void tpci200_clear_mask(struct tpci200_board *tpci200, | ||
75 | __le16 __iomem *addr, u16 mask) | ||
76 | { | ||
77 | unsigned long flags; | ||
78 | spin_lock_irqsave(&tpci200->regs_lock, flags); | ||
79 | iowrite16(ioread16(addr) & (~mask), addr); | ||
80 | spin_unlock_irqrestore(&tpci200->regs_lock, flags); | ||
81 | } | ||
82 | |||
83 | static void tpci200_set_mask(struct tpci200_board *tpci200, | ||
84 | __le16 __iomem *addr, u16 mask) | ||
85 | { | ||
86 | unsigned long flags; | ||
87 | spin_lock_irqsave(&tpci200->regs_lock, flags); | ||
88 | iowrite16(ioread16(addr) | mask, addr); | ||
89 | spin_unlock_irqrestore(&tpci200->regs_lock, flags); | ||
90 | } | ||
91 | |||
92 | static void tpci200_unregister(struct tpci200_board *tpci200) | ||
93 | { | ||
94 | free_irq(tpci200->info->pdev->irq, (void *) tpci200); | ||
95 | |||
96 | pci_iounmap(tpci200->info->pdev, tpci200->info->interface_regs); | ||
97 | pci_iounmap(tpci200->info->pdev, tpci200->info->cfg_regs); | ||
98 | |||
99 | pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); | ||
100 | pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); | ||
101 | pci_release_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR); | ||
102 | pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); | ||
103 | pci_release_region(tpci200->info->pdev, TPCI200_CFG_MEM_BAR); | ||
104 | |||
105 | pci_disable_device(tpci200->info->pdev); | ||
106 | pci_dev_put(tpci200->info->pdev); | ||
107 | } | ||
108 | |||
109 | static void tpci200_enable_irq(struct tpci200_board *tpci200, | ||
110 | int islot) | ||
111 | { | ||
112 | tpci200_set_mask(tpci200, | ||
113 | &tpci200->info->interface_regs->control[islot], | ||
114 | TPCI200_INT0_EN | TPCI200_INT1_EN); | ||
115 | } | ||
116 | |||
117 | static void tpci200_disable_irq(struct tpci200_board *tpci200, | ||
118 | int islot) | ||
119 | { | ||
120 | tpci200_clear_mask(tpci200, | ||
121 | &tpci200->info->interface_regs->control[islot], | ||
122 | TPCI200_INT0_EN | TPCI200_INT1_EN); | ||
123 | } | ||
124 | |||
125 | static irqreturn_t tpci200_slot_irq(struct slot_irq *slot_irq) | ||
126 | { | ||
127 | irqreturn_t ret; | ||
128 | |||
129 | if (!slot_irq) | ||
130 | return -ENODEV; | ||
131 | ret = slot_irq->handler(slot_irq->arg); | ||
132 | |||
133 | return ret; | ||
134 | } | ||
135 | |||
136 | static irqreturn_t tpci200_interrupt(int irq, void *dev_id) | ||
137 | { | ||
138 | struct tpci200_board *tpci200 = (struct tpci200_board *) dev_id; | ||
139 | struct slot_irq *slot_irq; | ||
140 | irqreturn_t ret; | ||
141 | u16 status_reg; | ||
142 | int i; | ||
143 | |||
144 | /* Read status register */ | ||
145 | status_reg = ioread16(&tpci200->info->interface_regs->status); | ||
146 | |||
147 | /* Did we cause the interrupt? */ | ||
148 | if (!(status_reg & TPCI200_SLOT_INT_MASK)) | ||
149 | return IRQ_NONE; | ||
150 | |||
151 | /* callback to the IRQ handler for the corresponding slot */ | ||
152 | rcu_read_lock(); | ||
153 | for (i = 0; i < TPCI200_NB_SLOT; i++) { | ||
154 | if (!(status_reg & ((TPCI200_A_INT0 | TPCI200_A_INT1) << (2 * i)))) | ||
155 | continue; | ||
156 | slot_irq = rcu_dereference(tpci200->slots[i].irq); | ||
157 | ret = tpci200_slot_irq(slot_irq); | ||
158 | if (ret == -ENODEV) { | ||
159 | dev_info(&tpci200->info->pdev->dev, | ||
160 | "No registered ISR for slot [%d:%d]!. IRQ will be disabled.\n", | ||
161 | tpci200->number, i); | ||
162 | tpci200_disable_irq(tpci200, i); | ||
163 | } | ||
164 | } | ||
165 | rcu_read_unlock(); | ||
166 | |||
167 | return IRQ_HANDLED; | ||
168 | } | ||
169 | |||
170 | static int tpci200_free_irq(struct ipack_device *dev) | ||
171 | { | ||
172 | struct slot_irq *slot_irq; | ||
173 | struct tpci200_board *tpci200; | ||
174 | |||
175 | tpci200 = check_slot(dev); | ||
176 | if (tpci200 == NULL) | ||
177 | return -EINVAL; | ||
178 | |||
179 | if (mutex_lock_interruptible(&tpci200->mutex)) | ||
180 | return -ERESTARTSYS; | ||
181 | |||
182 | if (tpci200->slots[dev->slot].irq == NULL) { | ||
183 | mutex_unlock(&tpci200->mutex); | ||
184 | return -EINVAL; | ||
185 | } | ||
186 | |||
187 | tpci200_disable_irq(tpci200, dev->slot); | ||
188 | slot_irq = tpci200->slots[dev->slot].irq; | ||
189 | /* uninstall handler */ | ||
190 | RCU_INIT_POINTER(tpci200->slots[dev->slot].irq, NULL); | ||
191 | synchronize_rcu(); | ||
192 | kfree(slot_irq); | ||
193 | mutex_unlock(&tpci200->mutex); | ||
194 | return 0; | ||
195 | } | ||
196 | |||
197 | static int tpci200_request_irq(struct ipack_device *dev, | ||
198 | irqreturn_t (*handler)(void *), void *arg) | ||
199 | { | ||
200 | int res = 0; | ||
201 | struct slot_irq *slot_irq; | ||
202 | struct tpci200_board *tpci200; | ||
203 | |||
204 | tpci200 = check_slot(dev); | ||
205 | if (tpci200 == NULL) | ||
206 | return -EINVAL; | ||
207 | |||
208 | if (mutex_lock_interruptible(&tpci200->mutex)) | ||
209 | return -ERESTARTSYS; | ||
210 | |||
211 | if (tpci200->slots[dev->slot].irq != NULL) { | ||
212 | dev_err(&dev->dev, | ||
213 | "Slot [%d:%d] IRQ already registered !\n", | ||
214 | dev->bus->bus_nr, | ||
215 | dev->slot); | ||
216 | res = -EINVAL; | ||
217 | goto out_unlock; | ||
218 | } | ||
219 | |||
220 | slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL); | ||
221 | if (slot_irq == NULL) { | ||
222 | dev_err(&dev->dev, | ||
223 | "Slot [%d:%d] unable to allocate memory for IRQ !\n", | ||
224 | dev->bus->bus_nr, dev->slot); | ||
225 | res = -ENOMEM; | ||
226 | goto out_unlock; | ||
227 | } | ||
228 | |||
229 | /* | ||
230 | * WARNING: Setup Interrupt Vector in the IndustryPack device | ||
231 | * before an IRQ request. | ||
232 | * Read the User Manual of your IndustryPack device to know | ||
233 | * where to write the vector in memory. | ||
234 | */ | ||
235 | slot_irq->handler = handler; | ||
236 | slot_irq->arg = arg; | ||
237 | slot_irq->holder = dev; | ||
238 | |||
239 | rcu_assign_pointer(tpci200->slots[dev->slot].irq, slot_irq); | ||
240 | tpci200_enable_irq(tpci200, dev->slot); | ||
241 | |||
242 | out_unlock: | ||
243 | mutex_unlock(&tpci200->mutex); | ||
244 | return res; | ||
245 | } | ||
246 | |||
247 | static int tpci200_register(struct tpci200_board *tpci200) | ||
248 | { | ||
249 | int i; | ||
250 | int res; | ||
251 | phys_addr_t ioidint_base; | ||
252 | unsigned short slot_ctrl; | ||
253 | |||
254 | if (pci_enable_device(tpci200->info->pdev) < 0) | ||
255 | return -ENODEV; | ||
256 | |||
257 | /* Request IP interface register (Bar 2) */ | ||
258 | res = pci_request_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR, | ||
259 | "Carrier IP interface registers"); | ||
260 | if (res) { | ||
261 | dev_err(&tpci200->info->pdev->dev, | ||
262 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 2 !", | ||
263 | tpci200->info->pdev->bus->number, | ||
264 | tpci200->info->pdev->devfn); | ||
265 | goto out_disable_pci; | ||
266 | } | ||
267 | |||
268 | /* Request IO ID INT space (Bar 3) */ | ||
269 | res = pci_request_region(tpci200->info->pdev, | ||
270 | TPCI200_IO_ID_INT_SPACES_BAR, | ||
271 | "Carrier IO ID INT space"); | ||
272 | if (res) { | ||
273 | dev_err(&tpci200->info->pdev->dev, | ||
274 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 3 !", | ||
275 | tpci200->info->pdev->bus->number, | ||
276 | tpci200->info->pdev->devfn); | ||
277 | goto out_release_ip_space; | ||
278 | } | ||
279 | |||
280 | /* Request MEM8 space (Bar 5) */ | ||
281 | res = pci_request_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR, | ||
282 | "Carrier MEM8 space"); | ||
283 | if (res) { | ||
284 | dev_err(&tpci200->info->pdev->dev, | ||
285 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 5!", | ||
286 | tpci200->info->pdev->bus->number, | ||
287 | tpci200->info->pdev->devfn); | ||
288 | goto out_release_ioid_int_space; | ||
289 | } | ||
290 | |||
291 | /* Request MEM16 space (Bar 4) */ | ||
292 | res = pci_request_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR, | ||
293 | "Carrier MEM16 space"); | ||
294 | if (res) { | ||
295 | dev_err(&tpci200->info->pdev->dev, | ||
296 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 4!", | ||
297 | tpci200->info->pdev->bus->number, | ||
298 | tpci200->info->pdev->devfn); | ||
299 | goto out_release_mem8_space; | ||
300 | } | ||
301 | |||
302 | /* Map internal tpci200 driver user space */ | ||
303 | tpci200->info->interface_regs = | ||
304 | ioremap_nocache(pci_resource_start(tpci200->info->pdev, | ||
305 | TPCI200_IP_INTERFACE_BAR), | ||
306 | TPCI200_IFACE_SIZE); | ||
307 | |||
308 | /* Initialize lock that protects interface_regs */ | ||
309 | spin_lock_init(&tpci200->regs_lock); | ||
310 | |||
311 | ioidint_base = pci_resource_start(tpci200->info->pdev, | ||
312 | TPCI200_IO_ID_INT_SPACES_BAR); | ||
313 | tpci200->mod_mem[IPACK_IO_SPACE] = ioidint_base + TPCI200_IO_SPACE_OFF; | ||
314 | tpci200->mod_mem[IPACK_ID_SPACE] = ioidint_base + TPCI200_ID_SPACE_OFF; | ||
315 | tpci200->mod_mem[IPACK_INT_SPACE] = | ||
316 | ioidint_base + TPCI200_INT_SPACE_OFF; | ||
317 | tpci200->mod_mem[IPACK_MEM8_SPACE] = | ||
318 | pci_resource_start(tpci200->info->pdev, | ||
319 | TPCI200_MEM8_SPACE_BAR); | ||
320 | tpci200->mod_mem[IPACK_MEM16_SPACE] = | ||
321 | pci_resource_start(tpci200->info->pdev, | ||
322 | TPCI200_MEM16_SPACE_BAR); | ||
323 | |||
324 | /* Set the default parameters of the slot | ||
325 | * INT0 disabled, level sensitive | ||
326 | * INT1 disabled, level sensitive | ||
327 | * error interrupt disabled | ||
328 | * timeout interrupt disabled | ||
329 | * recover time disabled | ||
330 | * clock rate 8 MHz | ||
331 | */ | ||
332 | slot_ctrl = 0; | ||
333 | for (i = 0; i < TPCI200_NB_SLOT; i++) | ||
334 | writew(slot_ctrl, &tpci200->info->interface_regs->control[i]); | ||
335 | |||
336 | res = request_irq(tpci200->info->pdev->irq, | ||
337 | tpci200_interrupt, IRQF_SHARED, | ||
338 | KBUILD_MODNAME, (void *) tpci200); | ||
339 | if (res) { | ||
340 | dev_err(&tpci200->info->pdev->dev, | ||
341 | "(bn 0x%X, sn 0x%X) unable to register IRQ !", | ||
342 | tpci200->info->pdev->bus->number, | ||
343 | tpci200->info->pdev->devfn); | ||
344 | goto out_release_ioid_int_space; | ||
345 | } | ||
346 | |||
347 | return 0; | ||
348 | |||
349 | out_release_mem8_space: | ||
350 | pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); | ||
351 | out_release_ioid_int_space: | ||
352 | pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); | ||
353 | out_release_ip_space: | ||
354 | pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); | ||
355 | out_disable_pci: | ||
356 | pci_disable_device(tpci200->info->pdev); | ||
357 | return res; | ||
358 | } | ||
359 | |||
360 | static int tpci200_get_clockrate(struct ipack_device *dev) | ||
361 | { | ||
362 | struct tpci200_board *tpci200 = check_slot(dev); | ||
363 | __le16 __iomem *addr; | ||
364 | |||
365 | if (!tpci200) | ||
366 | return -ENODEV; | ||
367 | |||
368 | addr = &tpci200->info->interface_regs->control[dev->slot]; | ||
369 | return (ioread16(addr) & TPCI200_CLK32) ? 32 : 8; | ||
370 | } | ||
371 | |||
372 | static int tpci200_set_clockrate(struct ipack_device *dev, int mherz) | ||
373 | { | ||
374 | struct tpci200_board *tpci200 = check_slot(dev); | ||
375 | __le16 __iomem *addr; | ||
376 | |||
377 | if (!tpci200) | ||
378 | return -ENODEV; | ||
379 | |||
380 | addr = &tpci200->info->interface_regs->control[dev->slot]; | ||
381 | |||
382 | switch (mherz) { | ||
383 | case 8: | ||
384 | tpci200_clear_mask(tpci200, addr, TPCI200_CLK32); | ||
385 | break; | ||
386 | case 32: | ||
387 | tpci200_set_mask(tpci200, addr, TPCI200_CLK32); | ||
388 | break; | ||
389 | default: | ||
390 | return -EINVAL; | ||
391 | } | ||
392 | return 0; | ||
393 | } | ||
394 | |||
395 | static int tpci200_get_error(struct ipack_device *dev) | ||
396 | { | ||
397 | struct tpci200_board *tpci200 = check_slot(dev); | ||
398 | __le16 __iomem *addr; | ||
399 | u16 mask; | ||
400 | |||
401 | if (!tpci200) | ||
402 | return -ENODEV; | ||
403 | |||
404 | addr = &tpci200->info->interface_regs->status; | ||
405 | mask = tpci200_status_error[dev->slot]; | ||
406 | return (ioread16(addr) & mask) ? 1 : 0; | ||
407 | } | ||
408 | |||
409 | static int tpci200_get_timeout(struct ipack_device *dev) | ||
410 | { | ||
411 | struct tpci200_board *tpci200 = check_slot(dev); | ||
412 | __le16 __iomem *addr; | ||
413 | u16 mask; | ||
414 | |||
415 | if (!tpci200) | ||
416 | return -ENODEV; | ||
417 | |||
418 | addr = &tpci200->info->interface_regs->status; | ||
419 | mask = tpci200_status_timeout[dev->slot]; | ||
420 | |||
421 | return (ioread16(addr) & mask) ? 1 : 0; | ||
422 | } | ||
423 | |||
424 | static int tpci200_reset_timeout(struct ipack_device *dev) | ||
425 | { | ||
426 | struct tpci200_board *tpci200 = check_slot(dev); | ||
427 | __le16 __iomem *addr; | ||
428 | u16 mask; | ||
429 | |||
430 | if (!tpci200) | ||
431 | return -ENODEV; | ||
432 | |||
433 | addr = &tpci200->info->interface_regs->status; | ||
434 | mask = tpci200_status_timeout[dev->slot]; | ||
435 | |||
436 | iowrite16(mask, addr); | ||
437 | return 0; | ||
438 | } | ||
439 | |||
440 | static void tpci200_uninstall(struct tpci200_board *tpci200) | ||
441 | { | ||
442 | tpci200_unregister(tpci200); | ||
443 | kfree(tpci200->slots); | ||
444 | } | ||
445 | |||
446 | static const struct ipack_bus_ops tpci200_bus_ops = { | ||
447 | .request_irq = tpci200_request_irq, | ||
448 | .free_irq = tpci200_free_irq, | ||
449 | .get_clockrate = tpci200_get_clockrate, | ||
450 | .set_clockrate = tpci200_set_clockrate, | ||
451 | .get_error = tpci200_get_error, | ||
452 | .get_timeout = tpci200_get_timeout, | ||
453 | .reset_timeout = tpci200_reset_timeout, | ||
454 | }; | ||
455 | |||
456 | static int tpci200_install(struct tpci200_board *tpci200) | ||
457 | { | ||
458 | int res; | ||
459 | |||
460 | tpci200->slots = kzalloc( | ||
461 | TPCI200_NB_SLOT * sizeof(struct tpci200_slot), GFP_KERNEL); | ||
462 | if (tpci200->slots == NULL) | ||
463 | return -ENOMEM; | ||
464 | |||
465 | res = tpci200_register(tpci200); | ||
466 | if (res) { | ||
467 | kfree(tpci200->slots); | ||
468 | tpci200->slots = NULL; | ||
469 | return res; | ||
470 | } | ||
471 | |||
472 | mutex_init(&tpci200->mutex); | ||
473 | return 0; | ||
474 | } | ||
475 | |||
476 | static void tpci200_release_device(struct ipack_device *dev) | ||
477 | { | ||
478 | kfree(dev); | ||
479 | } | ||
480 | |||
481 | static int tpci200_create_device(struct tpci200_board *tpci200, int i) | ||
482 | { | ||
483 | enum ipack_space space; | ||
484 | struct ipack_device *dev = | ||
485 | kzalloc(sizeof(struct ipack_device), GFP_KERNEL); | ||
486 | if (!dev) | ||
487 | return -ENOMEM; | ||
488 | dev->slot = i; | ||
489 | dev->bus = tpci200->info->ipack_bus; | ||
490 | dev->release = tpci200_release_device; | ||
491 | |||
492 | for (space = 0; space < IPACK_SPACE_COUNT; space++) { | ||
493 | dev->region[space].start = | ||
494 | tpci200->mod_mem[space] | ||
495 | + tpci200_space_interval[space] * i; | ||
496 | dev->region[space].size = tpci200_space_size[space]; | ||
497 | } | ||
498 | return ipack_device_register(dev); | ||
499 | } | ||
500 | |||
501 | static int tpci200_pci_probe(struct pci_dev *pdev, | ||
502 | const struct pci_device_id *id) | ||
503 | { | ||
504 | int ret, i; | ||
505 | struct tpci200_board *tpci200; | ||
506 | u32 reg32; | ||
507 | |||
508 | tpci200 = kzalloc(sizeof(struct tpci200_board), GFP_KERNEL); | ||
509 | if (!tpci200) | ||
510 | return -ENOMEM; | ||
511 | |||
512 | tpci200->info = kzalloc(sizeof(struct tpci200_infos), GFP_KERNEL); | ||
513 | if (!tpci200->info) { | ||
514 | ret = -ENOMEM; | ||
515 | goto out_err_info; | ||
516 | } | ||
517 | |||
518 | pci_dev_get(pdev); | ||
519 | |||
520 | /* Obtain a mapping of the carrier's PCI configuration registers */ | ||
521 | ret = pci_request_region(pdev, TPCI200_CFG_MEM_BAR, | ||
522 | KBUILD_MODNAME " Configuration Memory"); | ||
523 | if (ret) { | ||
524 | dev_err(&pdev->dev, "Failed to allocate PCI Configuration Memory"); | ||
525 | ret = -EBUSY; | ||
526 | goto out_err_pci_request; | ||
527 | } | ||
528 | tpci200->info->cfg_regs = ioremap_nocache( | ||
529 | pci_resource_start(pdev, TPCI200_CFG_MEM_BAR), | ||
530 | pci_resource_len(pdev, TPCI200_CFG_MEM_BAR)); | ||
531 | if (!tpci200->info->cfg_regs) { | ||
532 | dev_err(&pdev->dev, "Failed to map PCI Configuration Memory"); | ||
533 | ret = -EFAULT; | ||
534 | goto out_err_ioremap; | ||
535 | } | ||
536 | |||
537 | /* Disable byte swapping for 16 bit IP module access. This will ensure | ||
538 | * that the Industrypack big endian byte order is preserved by the | ||
539 | * carrier. */ | ||
540 | reg32 = ioread32(tpci200->info->cfg_regs + LAS1_DESC); | ||
541 | reg32 |= 1 << LAS_BIT_BIGENDIAN; | ||
542 | iowrite32(reg32, tpci200->info->cfg_regs + LAS1_DESC); | ||
543 | |||
544 | reg32 = ioread32(tpci200->info->cfg_regs + LAS2_DESC); | ||
545 | reg32 |= 1 << LAS_BIT_BIGENDIAN; | ||
546 | iowrite32(reg32, tpci200->info->cfg_regs + LAS2_DESC); | ||
547 | |||
548 | /* Save struct pci_dev pointer */ | ||
549 | tpci200->info->pdev = pdev; | ||
550 | tpci200->info->id_table = (struct pci_device_id *)id; | ||
551 | |||
552 | /* register the device and initialize it */ | ||
553 | ret = tpci200_install(tpci200); | ||
554 | if (ret) { | ||
555 | dev_err(&pdev->dev, "error during tpci200 install\n"); | ||
556 | ret = -ENODEV; | ||
557 | goto out_err_install; | ||
558 | } | ||
559 | |||
560 | /* Register the carrier in the industry pack bus driver */ | ||
561 | tpci200->info->ipack_bus = ipack_bus_register(&pdev->dev, | ||
562 | TPCI200_NB_SLOT, | ||
563 | &tpci200_bus_ops); | ||
564 | if (!tpci200->info->ipack_bus) { | ||
565 | dev_err(&pdev->dev, | ||
566 | "error registering the carrier on ipack driver\n"); | ||
567 | ret = -EFAULT; | ||
568 | goto out_err_bus_register; | ||
569 | } | ||
570 | |||
571 | /* save the bus number given by ipack to logging purpose */ | ||
572 | tpci200->number = tpci200->info->ipack_bus->bus_nr; | ||
573 | dev_set_drvdata(&pdev->dev, tpci200); | ||
574 | |||
575 | for (i = 0; i < TPCI200_NB_SLOT; i++) | ||
576 | tpci200_create_device(tpci200, i); | ||
577 | return 0; | ||
578 | |||
579 | out_err_bus_register: | ||
580 | tpci200_uninstall(tpci200); | ||
581 | out_err_install: | ||
582 | iounmap(tpci200->info->cfg_regs); | ||
583 | out_err_ioremap: | ||
584 | pci_release_region(pdev, TPCI200_CFG_MEM_BAR); | ||
585 | out_err_pci_request: | ||
586 | pci_dev_put(pdev); | ||
587 | kfree(tpci200->info); | ||
588 | out_err_info: | ||
589 | kfree(tpci200); | ||
590 | return ret; | ||
591 | } | ||
592 | |||
593 | static void __tpci200_pci_remove(struct tpci200_board *tpci200) | ||
594 | { | ||
595 | ipack_bus_unregister(tpci200->info->ipack_bus); | ||
596 | tpci200_uninstall(tpci200); | ||
597 | |||
598 | kfree(tpci200->info); | ||
599 | kfree(tpci200); | ||
600 | } | ||
601 | |||
602 | static void __devexit tpci200_pci_remove(struct pci_dev *dev) | ||
603 | { | ||
604 | struct tpci200_board *tpci200 = pci_get_drvdata(dev); | ||
605 | |||
606 | __tpci200_pci_remove(tpci200); | ||
607 | } | ||
608 | |||
609 | static DEFINE_PCI_DEVICE_TABLE(tpci200_idtable) = { | ||
610 | { TPCI200_VENDOR_ID, TPCI200_DEVICE_ID, TPCI200_SUBVENDOR_ID, | ||
611 | TPCI200_SUBDEVICE_ID }, | ||
612 | { 0, }, | ||
613 | }; | ||
614 | |||
615 | MODULE_DEVICE_TABLE(pci, tpci200_idtable); | ||
616 | |||
617 | static struct pci_driver tpci200_pci_drv = { | ||
618 | .name = "tpci200", | ||
619 | .id_table = tpci200_idtable, | ||
620 | .probe = tpci200_pci_probe, | ||
621 | .remove = __devexit_p(tpci200_pci_remove), | ||
622 | }; | ||
623 | |||
624 | module_pci_driver(tpci200_pci_drv); | ||
625 | |||
626 | MODULE_DESCRIPTION("TEWS TPCI-200 device driver"); | ||
627 | MODULE_LICENSE("GPL"); | ||
diff --git a/drivers/ipack/carriers/tpci200.h b/drivers/ipack/carriers/tpci200.h new file mode 100644 index 000000000000..8d9be277b34d --- /dev/null +++ b/drivers/ipack/carriers/tpci200.h | |||
@@ -0,0 +1,168 @@ | |||
1 | /** | ||
2 | * tpci200.h | ||
3 | * | ||
4 | * driver for the carrier TEWS TPCI-200 | ||
5 | * | ||
6 | * Copyright (C) 2009-2012 CERN (www.cern.ch) | ||
7 | * Author: Nicolas Serafini, EIC2 SA | ||
8 | * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com> | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify it | ||
11 | * under the terms of the GNU General Public License as published by the Free | ||
12 | * Software Foundation; version 2 of the License. | ||
13 | */ | ||
14 | |||
15 | #ifndef _TPCI200_H_ | ||
16 | #define _TPCI200_H_ | ||
17 | |||
18 | #include <linux/limits.h> | ||
19 | #include <linux/pci.h> | ||
20 | #include <linux/spinlock.h> | ||
21 | #include <linux/swab.h> | ||
22 | #include <linux/io.h> | ||
23 | |||
24 | #include "../ipack.h" | ||
25 | |||
26 | #define TPCI200_NB_SLOT 0x4 | ||
27 | #define TPCI200_NB_BAR 0x6 | ||
28 | |||
29 | #define TPCI200_VENDOR_ID 0x1498 | ||
30 | #define TPCI200_DEVICE_ID 0x30C8 | ||
31 | #define TPCI200_SUBVENDOR_ID 0x1498 | ||
32 | #define TPCI200_SUBDEVICE_ID 0x300A | ||
33 | |||
34 | #define TPCI200_CFG_MEM_BAR 0 | ||
35 | #define TPCI200_IP_INTERFACE_BAR 2 | ||
36 | #define TPCI200_IO_ID_INT_SPACES_BAR 3 | ||
37 | #define TPCI200_MEM16_SPACE_BAR 4 | ||
38 | #define TPCI200_MEM8_SPACE_BAR 5 | ||
39 | |||
40 | struct tpci200_regs { | ||
41 | __le16 revision; | ||
42 | /* writes to control should occur with the mutex held to protect | ||
43 | * read-modify-write operations */ | ||
44 | __le16 control[4]; | ||
45 | __le16 reset; | ||
46 | __le16 status; | ||
47 | u8 reserved[242]; | ||
48 | } __packed; | ||
49 | |||
50 | #define TPCI200_IFACE_SIZE 0x100 | ||
51 | |||
52 | #define TPCI200_IO_SPACE_OFF 0x0000 | ||
53 | #define TPCI200_IO_SPACE_INTERVAL 0x0100 | ||
54 | #define TPCI200_IO_SPACE_SIZE 0x0080 | ||
55 | #define TPCI200_ID_SPACE_OFF 0x0080 | ||
56 | #define TPCI200_ID_SPACE_INTERVAL 0x0100 | ||
57 | #define TPCI200_ID_SPACE_SIZE 0x0040 | ||
58 | #define TPCI200_INT_SPACE_OFF 0x00C0 | ||
59 | #define TPCI200_INT_SPACE_INTERVAL 0x0100 | ||
60 | #define TPCI200_INT_SPACE_SIZE 0x0040 | ||
61 | #define TPCI200_IOIDINT_SIZE 0x0400 | ||
62 | |||
63 | #define TPCI200_MEM8_SPACE_INTERVAL 0x00400000 | ||
64 | #define TPCI200_MEM8_SPACE_SIZE 0x00400000 | ||
65 | #define TPCI200_MEM16_SPACE_INTERVAL 0x00800000 | ||
66 | #define TPCI200_MEM16_SPACE_SIZE 0x00800000 | ||
67 | |||
68 | /* control field in tpci200_regs */ | ||
69 | #define TPCI200_INT0_EN 0x0040 | ||
70 | #define TPCI200_INT1_EN 0x0080 | ||
71 | #define TPCI200_INT0_EDGE 0x0010 | ||
72 | #define TPCI200_INT1_EDGE 0x0020 | ||
73 | #define TPCI200_ERR_INT_EN 0x0008 | ||
74 | #define TPCI200_TIME_INT_EN 0x0004 | ||
75 | #define TPCI200_RECOVER_EN 0x0002 | ||
76 | #define TPCI200_CLK32 0x0001 | ||
77 | |||
78 | /* reset field in tpci200_regs */ | ||
79 | #define TPCI200_A_RESET 0x0001 | ||
80 | #define TPCI200_B_RESET 0x0002 | ||
81 | #define TPCI200_C_RESET 0x0004 | ||
82 | #define TPCI200_D_RESET 0x0008 | ||
83 | |||
84 | /* status field in tpci200_regs */ | ||
85 | #define TPCI200_A_TIMEOUT 0x1000 | ||
86 | #define TPCI200_B_TIMEOUT 0x2000 | ||
87 | #define TPCI200_C_TIMEOUT 0x4000 | ||
88 | #define TPCI200_D_TIMEOUT 0x8000 | ||
89 | |||
90 | #define TPCI200_A_ERROR 0x0100 | ||
91 | #define TPCI200_B_ERROR 0x0200 | ||
92 | #define TPCI200_C_ERROR 0x0400 | ||
93 | #define TPCI200_D_ERROR 0x0800 | ||
94 | |||
95 | #define TPCI200_A_INT0 0x0001 | ||
96 | #define TPCI200_A_INT1 0x0002 | ||
97 | #define TPCI200_B_INT0 0x0004 | ||
98 | #define TPCI200_B_INT1 0x0008 | ||
99 | #define TPCI200_C_INT0 0x0010 | ||
100 | #define TPCI200_C_INT1 0x0020 | ||
101 | #define TPCI200_D_INT0 0x0040 | ||
102 | #define TPCI200_D_INT1 0x0080 | ||
103 | |||
104 | #define TPCI200_SLOT_INT_MASK 0x00FF | ||
105 | |||
106 | /* PCI Configuration registers. The PCI bridge is a PLX Technology PCI9030. */ | ||
107 | #define LAS1_DESC 0x2C | ||
108 | #define LAS2_DESC 0x30 | ||
109 | |||
110 | /* Bits in the LAS?_DESC registers */ | ||
111 | #define LAS_BIT_BIGENDIAN 24 | ||
112 | |||
113 | #define VME_IOID_SPACE "IOID" | ||
114 | #define VME_MEM_SPACE "MEM" | ||
115 | |||
116 | /** | ||
117 | * struct slot_irq - slot IRQ definition. | ||
118 | * @vector Vector number | ||
119 | * @handler Handler called when IRQ arrives | ||
120 | * @arg Handler argument | ||
121 | * | ||
122 | */ | ||
123 | struct slot_irq { | ||
124 | struct ipack_device *holder; | ||
125 | int vector; | ||
126 | irqreturn_t (*handler)(void *); | ||
127 | void *arg; | ||
128 | }; | ||
129 | |||
130 | /** | ||
131 | * struct tpci200_slot - data specific to the tpci200 slot. | ||
132 | * @slot_id Slot identification gived to external interface | ||
133 | * @irq Slot IRQ infos | ||
134 | * @io_phys IO physical base address register of the slot | ||
135 | * @id_phys ID physical base address register of the slot | ||
136 | * @int_phys INT physical base address register of the slot | ||
137 | * @mem_phys MEM physical base address register of the slot | ||
138 | * | ||
139 | */ | ||
140 | struct tpci200_slot { | ||
141 | struct slot_irq *irq; | ||
142 | }; | ||
143 | |||
144 | /** | ||
145 | * struct tpci200_infos - informations specific of the TPCI200 tpci200. | ||
146 | * @pci_dev PCI device | ||
147 | * @interface_regs Pointer to IP interface space (Bar 2) | ||
148 | * @ioidint_space Pointer to IP ID, IO and INT space (Bar 3) | ||
149 | * @mem8_space Pointer to MEM space (Bar 4) | ||
150 | * | ||
151 | */ | ||
152 | struct tpci200_infos { | ||
153 | struct pci_dev *pdev; | ||
154 | struct pci_device_id *id_table; | ||
155 | struct tpci200_regs __iomem *interface_regs; | ||
156 | void __iomem *cfg_regs; | ||
157 | struct ipack_bus_device *ipack_bus; | ||
158 | }; | ||
159 | struct tpci200_board { | ||
160 | unsigned int number; | ||
161 | struct mutex mutex; | ||
162 | spinlock_t regs_lock; | ||
163 | struct tpci200_slot *slots; | ||
164 | struct tpci200_infos *info; | ||
165 | phys_addr_t mod_mem[IPACK_SPACE_COUNT]; | ||
166 | }; | ||
167 | |||
168 | #endif /* _TPCI200_H_ */ | ||