1 // SPDX-License-Identifier: GPL-2.0
21 #include <asm/irq.h>
34 static unsigned long cached_irq_mask[2] = { -1, -1 };
37 takara_update_irq_hw(unsigned long irq, unsigned long mask)  in takara_update_irq_hw()  argument
41 	mask = (irq >= 64 ? mask << 16 : mask >> ((irq - 16) & 0x30));  in takara_update_irq_hw()
42 	regaddr = 0x510 + (((irq - 16) >> 2) & 0x0c);  in takara_update_irq_hw()
49 	unsigned int irq = d->irq;  in takara_enable_irq()  local
51 	mask = (cached_irq_mask[irq >= 64] &= ~(1UL << (irq & 63)));  in takara_enable_irq()
52 	takara_update_irq_hw(irq, mask);  in takara_enable_irq()
58 	unsigned int irq = d->irq;  in takara_disable_irq()  local
60 	mask = (cached_irq_mask[irq >= 64] |= 1UL << (irq & 63));  in takara_disable_irq()
61 	takara_update_irq_hw(irq, mask);  in takara_disable_irq()
111 	int irq = (vector - 0x800) >> 4;  in takara_srm_device_interrupt()  local
112 	handle_irq(irq);  in takara_srm_device_interrupt()
127 		/* Return to non-accelerated mode.  */  in takara_init_irq()
137 		takara_update_irq_hw(i, -1);  in takara_init_irq()
154  * doesn't explicitly generate PCI-type interrupts, so we can
155  * assign it whatever the hell IRQ we like and it doesn't matter.
162 		{ 16+3, 16+3, 16+3, 16+3, 16+3},   /* slot  6 == device 3 */  in takara_map_irq_srm()
163 		{ 16+2, 16+2, 16+2, 16+2, 16+2},   /* slot  7 == device 2 */  in takara_map_irq_srm()
164 		{ 16+1, 16+1, 16+1, 16+1, 16+1},   /* slot  8 == device 1 */  in takara_map_irq_srm()
165 		{   -1,   -1,   -1,   -1,   -1},   /* slot  9 == nothing */  in takara_map_irq_srm()
166 		{   -1,   -1,   -1,   -1,   -1},   /* slot 10 == nothing */  in takara_map_irq_srm()
167 		{   -1,   -1,   -1,   -1,   -1},   /* slot 11 == nothing */  in takara_map_irq_srm()
173 		{   -1,   -1,   -1,   -1,   -1},   /* slot 16 == nothing */  in takara_map_irq_srm()
174 		{64+ 0, 64+0, 64+1, 64+2, 64+3},   /* slot 17= device 4 */  in takara_map_irq_srm()
175 		{48+ 0, 48+0, 48+1, 48+2, 48+3},   /* slot 18= device 3 */  in takara_map_irq_srm()
176 		{32+ 0, 32+0, 32+1, 32+2, 32+3},   /* slot 19= device 2 */  in takara_map_irq_srm()
177 		{16+ 0, 16+0, 16+1, 16+2, 16+3},   /* slot 20= device 1 */  in takara_map_irq_srm()
180         int irq = COMMON_TABLE_LOOKUP;  in takara_map_irq_srm()  local
181 	if (irq >= 0 && irq < 16) {  in takara_map_irq_srm()
183 		unsigned int busslot = PCI_SLOT(dev->bus->self->devfn);  in takara_map_irq_srm()
184 		irq += irq_tab[busslot-min_idsel][0];  in takara_map_irq_srm()
186 	return irq;  in takara_map_irq_srm()
193 		{ 16+3, 16+3, 16+3, 16+3, 16+3},   /* slot  6 == device 3 */  in takara_map_irq()
194 		{ 16+2, 16+2, 16+2, 16+2, 16+2},   /* slot  7 == device 2 */  in takara_map_irq()
195 		{ 16+1, 16+1, 16+1, 16+1, 16+1},   /* slot  8 == device 1 */  in takara_map_irq()
196 		{   -1,   -1,   -1,   -1,   -1},   /* slot  9 == nothing */  in takara_map_irq()
197 		{   -1,   -1,   -1,   -1,   -1},   /* slot 10 == nothing */  in takara_map_irq()
198 		{   -1,   -1,   -1,   -1,   -1},   /* slot 11 == nothing */  in takara_map_irq()
199 		{   -1,   -1,   -1,   -1,   -1},   /* slot 12 == nothing */  in takara_map_irq()
200 		{   -1,   -1,   -1,   -1,   -1},   /* slot 13 == nothing */  in takara_map_irq()
201 		{   -1,   -1,   -1,   -1,   -1},   /* slot 14 == nothing */  in takara_map_irq()
202 		{   -1,   -1,   -1,   -1,   -1},   /* slot 15 == nothing */  in takara_map_irq()
203 		{   -1,   -1,   -1,   -1,   -1},   /* slot 16 == nothing */  in takara_map_irq()
204 		{   -1,   -1,   -1,   -1,   -1},   /* slot 17 == nothing */  in takara_map_irq()
205 		{ 16+3, 16+3, 16+3, 16+3, 16+3},   /* slot 18 == device 3 */  in takara_map_irq()
206 		{ 16+2, 16+2, 16+2, 16+2, 16+2},   /* slot 19 == device 2 */  in takara_map_irq()
207 		{ 16+1, 16+1, 16+1, 16+1, 16+1},   /* slot 20 == device 1 */  in takara_map_irq()
216 	int slot = PCI_SLOT(dev->devfn);  in takara_swizzle()
221 	if (!dev->bus->self)  in takara_swizzle()
224 	busslot = PCI_SLOT(dev->bus->self->devfn);  in takara_swizzle()
225 	/* Check for built-in bridges.  */  in takara_swizzle()
226 	if (dev->bus->number != 0  in takara_swizzle()
228 	    && ((1<<(36-busslot)) & ctlreg)) {  in takara_swizzle()
230 			pin += (20 - busslot);  in takara_swizzle()
233 			       "handle cards with INTA IRQ pin.\n");  in takara_swizzle()
236 		/* Must be a card-based bridge.  */  in takara_swizzle()
238 		       "card-bridge behind builtin bridge yet.\n");  in takara_swizzle()
253 	if (pc873xx_probe() == -1) {  in takara_init_pci()