1 // SPDX-License-Identifier: GPL-2.0
52 	noritake_update_irq_hw(d->irq, cached_irq_mask |= 1 << (d->irq - 16));  in noritake_enable_irq()
58 	noritake_update_irq_hw(d->irq, cached_irq_mask &= ~(1 << (d->irq - 16)));  in noritake_disable_irq()
86 		pld &= pld - 1; /* clear least bit set */  in noritake_device_interrupt()
100 	irq = (vector - 0x800) >> 4;  in noritake_srm_device_interrupt()
109 	 * So, here's this additional grotty hack... :-(  in noritake_srm_device_interrupt()
144  * 0        All valid ints from summary regs 2 & 3
146  * 2        Interrupt Line A from slot 0
150  * 6        Interrupt Line A from slot 2
151  * 7        Interrupt Line B from slot 2
161  * Summary @ 0x544, summary register #2:
163  * 0        OR of all unmasked ints in SR #2
165  * 2        Interrupt Line C from slot 0
169  * 6        Interrupt Line C from slot 2
170  * 7        Interrupt Line D from slot 2
183  *  7       Intel PCI-EISA bridge chip
184  *  8       DEC PCI-PCI bridge chip
187  * 13       PCI on board slot 2
190  * This two layered interrupt approach means that we allocate IRQ 16 and 
202 		{   -1,    -1,    -1,    -1,    -1},  /* IdSel 17, S3 Trio64 */  in noritake_map_irq()
203 		{   -1,    -1,    -1,    -1,    -1},  /* IdSel 18,  PCEB */  in noritake_map_irq()
204 		{   -1,    -1,    -1,    -1,    -1},  /* IdSel 19,  PPB  */  in noritake_map_irq()
205 		{   -1,    -1,    -1,    -1,    -1},  /* IdSel 20,  ???? */  in noritake_map_irq()
206 		{   -1,    -1,    -1,    -1,    -1},  /* IdSel 21,  ???? */  in noritake_map_irq()
207 		{ 16+2,  16+2,  16+3,  32+2,  32+3},  /* IdSel 22,  slot 0 */  in noritake_map_irq()
209 		{ 16+6,  16+6,  16+7,  32+6,  32+7},  /* IdSel 24,  slot 2 */  in noritake_map_irq()
212 		   across the built-in bridge of the NORITAKE only.  */  in noritake_map_irq()
228 	if (dev->bus->number == 0) {  in noritake_swizzle()
229 		slot = PCI_SLOT(dev->devfn);  in noritake_swizzle()
231 	/* Check for the built-in bridge */  in noritake_swizzle()
232 	else if (PCI_SLOT(dev->bus->self->devfn) == 8) {  in noritake_swizzle()
233 		slot = PCI_SLOT(dev->devfn) + 15; /* WAG! */  in noritake_swizzle()
237 		/* Must be a card-based bridge.  */  in noritake_swizzle()
239 			if (PCI_SLOT(dev->bus->self->devfn) == 8) {  in noritake_swizzle()
240 				slot = PCI_SLOT(dev->devfn) + 15;  in noritake_swizzle()
246 			dev = dev->bus->self;  in noritake_swizzle()
248 			slot = PCI_SLOT(dev->devfn);  in noritake_swizzle()
249 		} while (dev->bus->self);  in noritake_swizzle()
256 	.vector_name		= "Noritake-Primo",