1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  pci-vr41xx.c, PCI Control Unit routines for the NEC VR4100 series.
5  *  Copyright (C) 2001-2003 MontaVista Software Inc.
7  *  Copyright (C) 2004-2008  Yoichi Yuasa <yuasa@linux-mips.org>
8  *  Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
13  *  - New creation, NEC VR4122 and VR4131 are supported.
24 #include "pci-vr41xx.h"
101 	struct pci_target_address_conversion *target;  in vr41xx_pciu_init()  local
110 		return -EBUSY;  in vr41xx_pciu_init()
115 		return -EBUSY;  in vr41xx_pciu_init()
121 	/* Supply VTClock to PCIU */  in vr41xx_pciu_init()
124 	/* Dummy write, waiting for supply of VTClock. */  in vr41xx_pciu_init()
128 	if (setup->pci_clock_max != 0)  in vr41xx_pciu_init()
129 		pci_clock_max = setup->pci_clock_max;  in vr41xx_pciu_init()
145 		return -EINVAL;  in vr41xx_pciu_init()
148 	/* Supply PCI clock by PCI bus */  in vr41xx_pciu_init()
151 	if (setup->master_memory1 != NULL) {  in vr41xx_pciu_init()
152 		master = setup->master_memory1;  in vr41xx_pciu_init()
153 		val = IBA(master->bus_base_address) |  in vr41xx_pciu_init()
154 		      MASTER_MSK(master->address_mask) |  in vr41xx_pciu_init()
156 		      PCIA(master->pci_base_address);  in vr41xx_pciu_init()
164 	if (setup->master_memory2 != NULL) {  in vr41xx_pciu_init()
165 		master = setup->master_memory2;  in vr41xx_pciu_init()
166 		val = IBA(master->bus_base_address) |  in vr41xx_pciu_init()
167 		      MASTER_MSK(master->address_mask) |  in vr41xx_pciu_init()
169 		      PCIA(master->pci_base_address);  in vr41xx_pciu_init()
177 	if (setup->target_memory1 != NULL) {  in vr41xx_pciu_init()
178 		target = setup->target_memory1;  in vr41xx_pciu_init()
179 		val = TARGET_MSK(target->address_mask) |  in vr41xx_pciu_init()
181 		      ITA(target->bus_base_address);  in vr41xx_pciu_init()
189 	if (setup->target_memory2 != NULL) {  in vr41xx_pciu_init()
190 		target = setup->target_memory2;  in vr41xx_pciu_init()
191 		val = TARGET_MSK(target->address_mask) |  in vr41xx_pciu_init()
193 		      ITA(target->bus_base_address);  in vr41xx_pciu_init()
201 	if (setup->master_io != NULL) {  in vr41xx_pciu_init()
202 		master = setup->master_io;  in vr41xx_pciu_init()
203 		val = IBA(master->bus_base_address) |  in vr41xx_pciu_init()
204 		      MASTER_MSK(master->address_mask) |  in vr41xx_pciu_init()
206 		      PCIIA(master->pci_base_address);  in vr41xx_pciu_init()
214 	if (setup->exclusive_access == CANNOT_LOCK_FROM_DEVICE)  in vr41xx_pciu_init()
220 		pciu_write(PCITRDYVREG, TRDYV(setup->wait_time_limit_from_irdy_to_trdy));  in vr41xx_pciu_init()
222 	pciu_write(LATTIMEREG, MLTIM(setup->master_latency_timer));  in vr41xx_pciu_init()
224 	if (setup->mailbox != NULL) {  in vr41xx_pciu_init()
225 		mailbox = setup->mailbox;  in vr41xx_pciu_init()
226 		val = MBADD(mailbox->base_address) | TYPE_32BITSPACE |  in vr41xx_pciu_init()
231 	if (setup->target_window1) {  in vr41xx_pciu_init()
232 		window = setup->target_window1;  in vr41xx_pciu_init()
233 		val = PMBA(window->base_address) | TYPE_32BITSPACE |  in vr41xx_pciu_init()
238 	if (setup->target_window2) {  in vr41xx_pciu_init()
239 		window = setup->target_window2;  in vr41xx_pciu_init()
240 		val = PMBA(window->base_address) | TYPE_32BITSPACE |  in vr41xx_pciu_init()
247 	val |= RTYVAL(setup->retry_limit);  in vr41xx_pciu_init()
253 	switch (setup->arbiter_priority_control) {  in vr41xx_pciu_init()
265 	if (setup->take_away_gnt_mode == PCI_TAKE_AWAY_GNT_ENABLE)  in vr41xx_pciu_init()
279 	if (setup->mem_resource != NULL)  in vr41xx_pciu_init()
280 		vr41xx_pci_controller.mem_resource = setup->mem_resource;  in vr41xx_pciu_init()
282 	if (setup->io_resource != NULL) {  in vr41xx_pciu_init()
283 		vr41xx_pci_controller.io_resource = setup->io_resource;  in vr41xx_pciu_init()
290 	if (setup->master_io) {  in vr41xx_pciu_init()
293 		master = setup->master_io;  in vr41xx_pciu_init()
294 		io_map_base = ioremap(master->bus_base_address,  in vr41xx_pciu_init()
297 			return -EBUSY;  in vr41xx_pciu_init()