3  * Fake VME bridge support.
5  * This drive provides a fake VME bridge chip, this enables debugging of the
96 	struct fake_driver *bridge;  in fake_VIRQ_tasklet()  local
99 	bridge = fake_bridge->driver_priv;  in fake_VIRQ_tasklet()
101 	vme_irq_handler(fake_bridge, bridge->int_level, bridge->int_statid);  in fake_VIRQ_tasklet()
130 	struct fake_driver *bridge;  in fake_irq_generate()  local
132 	bridge = fake_bridge->driver_priv;  in fake_irq_generate()
134 	mutex_lock(&bridge->vme_int);  in fake_irq_generate()
136 	bridge->int_level = level;  in fake_irq_generate()
138 	bridge->int_statid = statid;  in fake_irq_generate()
144 	tasklet_schedule(&bridge->int_tasklet);  in fake_irq_generate()
146 	mutex_unlock(&bridge->vme_int);  in fake_irq_generate()
161 	struct fake_driver *bridge;  in fake_slave_set()  local
164 	bridge = fake_bridge->driver_priv;  in fake_slave_set()
208 	bridge->slaves[i].enabled = enabled;  in fake_slave_set()
209 	bridge->slaves[i].vme_base = vme_base;  in fake_slave_set()
210 	bridge->slaves[i].size = size;  in fake_slave_set()
211 	bridge->slaves[i].buf_base = fake_pci_to_ptr(buf_base);  in fake_slave_set()
212 	bridge->slaves[i].aspace = aspace;  in fake_slave_set()
213 	bridge->slaves[i].cycle = cycle;  in fake_slave_set()
228 	struct fake_driver *bridge;  in fake_slave_get()  local
230 	bridge = image->parent->driver_priv;  in fake_slave_get()
236 	*enabled = bridge->slaves[i].enabled;  in fake_slave_get()
237 	*vme_base = bridge->slaves[i].vme_base;  in fake_slave_get()
238 	*size = bridge->slaves[i].size;  in fake_slave_get()
239 	*buf_base = fake_ptr_to_pci(bridge->slaves[i].buf_base);  in fake_slave_get()
240 	*aspace = bridge->slaves[i].aspace;  in fake_slave_get()
241 	*cycle = bridge->slaves[i].cycle;  in fake_slave_get()
258 	struct fake_driver *bridge;  in fake_master_set()  local
262 	bridge = fake_bridge->driver_priv;  in fake_master_set()
317 	bridge->masters[i].enabled = enabled;  in fake_master_set()
318 	bridge->masters[i].vme_base = vme_base;  in fake_master_set()
319 	bridge->masters[i].size = size;  in fake_master_set()
320 	bridge->masters[i].aspace = aspace;  in fake_master_set()
321 	bridge->masters[i].cycle = cycle;  in fake_master_set()
322 	bridge->masters[i].dwidth = dwidth;  in fake_master_set()
343 	struct fake_driver *bridge;  in __fake_master_get()  local
345 	bridge = image->parent->driver_priv;  in __fake_master_get()
349 	*enabled = bridge->masters[i].enabled;  in __fake_master_get()
350 	*vme_base = bridge->masters[i].vme_base;  in __fake_master_get()
351 	*size = bridge->masters[i].size;  in __fake_master_get()
352 	*aspace = bridge->masters[i].aspace;  in __fake_master_get()
353 	*cycle = bridge->masters[i].cycle;  in __fake_master_get()
354 	*dwidth = bridge->masters[i].dwidth;  in __fake_master_get()
377 static void fake_lm_check(struct fake_driver *bridge, unsigned long long addr,  in fake_lm_check()  argument
388 	fake_bridge = bridge->parent;  in fake_lm_check()
395 		if (bridge->lm_enabled == 0)  in fake_lm_check()
398 		lm_base = bridge->lm_base;  in fake_lm_check()
399 		lm_aspace = bridge->lm_aspace;  in fake_lm_check()
400 		lm_cycle = bridge->lm_cycle;  in fake_lm_check()
408 					if (bridge->lm_callback[i])  in fake_lm_check()
409 						bridge->lm_callback[i](  in fake_lm_check()
410 							bridge->lm_data[i]);  in fake_lm_check()
417 static noinline_for_stack u8 fake_vmeread8(struct fake_driver *bridge,  in fake_vmeread8()  argument
427 		start = bridge->slaves[i].vme_base;  in fake_vmeread8()
428 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmeread8()
430 		if (aspace != bridge->slaves[i].aspace)  in fake_vmeread8()
433 		if (cycle != bridge->slaves[i].cycle)  in fake_vmeread8()
437 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmeread8()
438 			loc = (u8 *)(bridge->slaves[i].buf_base + offset);  in fake_vmeread8()
445 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmeread8()
450 static noinline_for_stack u16 fake_vmeread16(struct fake_driver *bridge,  in fake_vmeread16()  argument
460 		if (aspace != bridge->slaves[i].aspace)  in fake_vmeread16()
463 		if (cycle != bridge->slaves[i].cycle)  in fake_vmeread16()
466 		start = bridge->slaves[i].vme_base;  in fake_vmeread16()
467 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmeread16()
470 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmeread16()
471 			loc = (u16 *)(bridge->slaves[i].buf_base + offset);  in fake_vmeread16()
478 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmeread16()
483 static noinline_for_stack u32 fake_vmeread32(struct fake_driver *bridge,  in fake_vmeread32()  argument
493 		if (aspace != bridge->slaves[i].aspace)  in fake_vmeread32()
496 		if (cycle != bridge->slaves[i].cycle)  in fake_vmeread32()
499 		start = bridge->slaves[i].vme_base;  in fake_vmeread32()
500 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmeread32()
503 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmeread32()
504 			loc = (u32 *)(bridge->slaves[i].buf_base + offset);  in fake_vmeread32()
511 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmeread32()
544 	 * On the other hand, the bridge itself assures that the maximum data  in fake_master_read()
615 static noinline_for_stack void fake_vmewrite8(struct fake_driver *bridge,  in fake_vmewrite8()  argument
624 		if (aspace != bridge->slaves[i].aspace)  in fake_vmewrite8()
627 		if (cycle != bridge->slaves[i].cycle)  in fake_vmewrite8()
630 		start = bridge->slaves[i].vme_base;  in fake_vmewrite8()
631 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmewrite8()
634 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmewrite8()
635 			loc = (u8 *)((void *)bridge->slaves[i].buf_base + offset);  in fake_vmewrite8()
642 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmewrite8()
646 static noinline_for_stack void fake_vmewrite16(struct fake_driver *bridge,  in fake_vmewrite16()  argument
655 		if (aspace != bridge->slaves[i].aspace)  in fake_vmewrite16()
658 		if (cycle != bridge->slaves[i].cycle)  in fake_vmewrite16()
661 		start = bridge->slaves[i].vme_base;  in fake_vmewrite16()
662 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmewrite16()
665 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmewrite16()
666 			loc = (u16 *)((void *)bridge->slaves[i].buf_base + offset);  in fake_vmewrite16()
673 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmewrite16()
677 static noinline_for_stack void fake_vmewrite32(struct fake_driver *bridge,  in fake_vmewrite32()  argument
686 		if (aspace != bridge->slaves[i].aspace)  in fake_vmewrite32()
689 		if (cycle != bridge->slaves[i].cycle)  in fake_vmewrite32()
692 		start = bridge->slaves[i].vme_base;  in fake_vmewrite32()
693 		end = bridge->slaves[i].vme_base + bridge->slaves[i].size;  in fake_vmewrite32()
696 			offset = addr - bridge->slaves[i].vme_base;  in fake_vmewrite32()
697 			loc = (u32 *)((void *)bridge->slaves[i].buf_base + offset);  in fake_vmewrite32()
704 	fake_lm_check(bridge, addr, aspace, cycle);  in fake_vmewrite32()
719 	struct fake_driver *bridge;  in fake_master_write()  local
723 	bridge = fake_bridge->driver_priv;  in fake_master_write()
727 	addr = bridge->masters[i].vme_base + offset;  in fake_master_write()
728 	aspace = bridge->masters[i].aspace;  in fake_master_write()
729 	cycle = bridge->masters[i].cycle;  in fake_master_write()
730 	dwidth = bridge->masters[i].dwidth;  in fake_master_write()
738 		fake_vmewrite8(bridge, (u8 *)buf, addr, aspace, cycle);  in fake_master_write()
747 				fake_vmewrite8(bridge, (u8 *)(buf + done),  in fake_master_write()
752 				fake_vmewrite16(bridge, (u16 *)(buf + done),  in fake_master_write()
762 			fake_vmewrite32(bridge, (u32 *)(buf + done),  in fake_master_write()
769 			fake_vmewrite16(bridge, (u16 *)(buf + done),  in fake_master_write()
776 			fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done,  in fake_master_write()
785 			fake_vmewrite16(bridge, (u16 *)(buf + done),  in fake_master_write()
792 		fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done, aspace,  in fake_master_write()
817 	struct fake_driver *bridge;  in fake_master_rmw()  local
819 	bridge = image->parent->driver_priv;  in fake_master_rmw()
824 	base = bridge->masters[i].vme_base;  in fake_master_rmw()
825 	aspace = bridge->masters[i].aspace;  in fake_master_rmw()
826 	cycle = bridge->masters[i].cycle;  in fake_master_rmw()
832 	tmp = fake_vmeread32(bridge, base + offset, aspace, cycle);  in fake_master_rmw()
840 		fake_vmewrite32(bridge, &tmp, base + offset, aspace, cycle);  in fake_master_rmw()
861 	struct fake_driver *bridge;  in fake_lm_set()  local
865 	bridge = fake_bridge->driver_priv;  in fake_lm_set()
871 		if (bridge->lm_callback[i]) {  in fake_lm_set()
890 	bridge->lm_base = lm_base;  in fake_lm_set()
891 	bridge->lm_aspace = aspace;  in fake_lm_set()
892 	bridge->lm_cycle = cycle;  in fake_lm_set()
905 	struct fake_driver *bridge;  in fake_lm_get()  local
907 	bridge = lm->parent->driver_priv;  in fake_lm_get()
911 	*lm_base = bridge->lm_base;  in fake_lm_get()
912 	*aspace = bridge->lm_aspace;  in fake_lm_get()
913 	*cycle = bridge->lm_cycle;  in fake_lm_get()
917 	return bridge->lm_enabled;  in fake_lm_get()
929 	struct fake_driver *bridge;  in fake_lm_attach()  local
933 	bridge = fake_bridge->driver_priv;  in fake_lm_attach()
938 	if (bridge->lm_cycle == 0) {  in fake_lm_attach()
945 	if (bridge->lm_callback[monitor]) {  in fake_lm_attach()
952 	bridge->lm_callback[monitor] = callback;  in fake_lm_attach()
953 	bridge->lm_data[monitor] = data;  in fake_lm_attach()
956 	bridge->lm_enabled = 1;  in fake_lm_attach()
970 	struct fake_driver *bridge;  in fake_lm_detach()  local
972 	bridge = lm->parent->driver_priv;  in fake_lm_detach()
977 	bridge->lm_callback[monitor] = NULL;  in fake_lm_detach()
978 	bridge->lm_data[monitor] = NULL;  in fake_lm_detach()
983 		if (bridge->lm_callback[i])  in fake_lm_detach()
988 		bridge->lm_enabled = 0;  in fake_lm_detach()
1037 	struct fake_driver *bridge;  in fake_crcsr_init()  local
1039 	bridge = fake_bridge->driver_priv;  in fake_crcsr_init()
1042 	bridge->crcsr_kernel = kzalloc(VME_CRCSR_BUF_SIZE, GFP_KERNEL);  in fake_crcsr_init()
1043 	bridge->crcsr_bus = fake_ptr_to_pci(bridge->crcsr_kernel);  in fake_crcsr_init()
1044 	if (!bridge->crcsr_kernel)  in fake_crcsr_init()
1056 	struct fake_driver *bridge;  in fake_crcsr_exit()  local
1058 	bridge = fake_bridge->driver_priv;  in fake_crcsr_exit()
1060 	kfree(bridge->crcsr_kernel);  in fake_crcsr_exit()
1077 	/* If we want to support more than one bridge at some point, we need to  in fake_init()
1250 	struct fake_driver *bridge;  in fake_exit()  local
1254 	bridge = fake_bridge->driver_priv;  in fake_exit()
1262 		bridge->masters[i].enabled = 0;  in fake_exit()
1265 		bridge->slaves[i].enabled = 0;  in fake_exit()
1270 	bridge->lm_enabled = 0;  in fake_exit()
1301 MODULE_DESCRIPTION("Fake VME bridge driver");