18 #include <linux/irq.h>
48 	unsigned int irq = data->irq;  in q40_irq_startup()  local
51 	switch (irq) {  in q40_irq_startup()
54 		pr_warn("%s: ISA IRQ %d not implemented by HW\n", __func__,  in q40_irq_startup()
55 			irq);  in q40_irq_startup()
81  * the q40 IRQ handling routines.
98 	master_outb(1, EXT_ENABLE_REG);  /* ISA IRQ 5-15 */  in q40_init_IRQ()
100 	/* make sure keyboard IRQ is disabled */  in q40_init_IRQ()
133 static irqreturn_t q40_timer_int(int irq, void *dev_id)  in q40_timer_int()  argument
169  * tables to translate bits into IRQ numbers
174 struct IRQ_TABLE{ unsigned mask; int irq ;};  member
182   { .mask = Q40_IRQ3_MASK,	.irq = 3 },	/* ser 1 */
183   { .mask = Q40_IRQ4_MASK,	.irq = 4 },	/* ser 2 */
184   { .mask = Q40_IRQ14_MASK,	.irq = 14 },	/* IDE 1 */
185   { .mask = Q40_IRQ15_MASK,	.irq = 15 },	/* IDE 2 */
186   { .mask = Q40_IRQ6_MASK,	.irq = 6 },	/* floppy, handled elsewhere */
187   { .mask = Q40_IRQ7_MASK,	.irq = 7 },	/* par */
188   { .mask = Q40_IRQ5_MASK,	.irq = 5 },
189   { .mask = Q40_IRQ10_MASK,	.irq = 10 },
206 static int mext_disabled;	/* ext irq disabled by master chip? */
211 static void q40_irq_handler(unsigned int irq, struct pt_regs *fp)  in q40_irq_handler()  argument
225 	switch (irq) {  in q40_irq_handler()
239 				irq = eirqs[i].irq;  in q40_irq_handler()
241  * There is a little mess wrt which IRQ really caused this irq request. The  in q40_irq_handler()
246 				if (irq > 4 && irq <= 15 && mext_disabled) {  in q40_irq_handler()
250 				if (q40_state[irq] & IRQ_INPROGRESS) {  in q40_irq_handler()
251 					/* some handlers do local_irq_enable() for irq latency reasons, */  in q40_irq_handler()
252 					/* however reentering an active irq handler is not permitted */  in q40_irq_handler()
256 					disable_irq(irq);  in q40_irq_handler()
259 					/*pr_warn("IRQ_INPROGRESS detected for irq %d, disabling - %s disabled\n",  in q40_irq_handler()
260 						irq, disabled ? "already" : "not yet"); */  in q40_irq_handler()
266 				q40_state[irq] |= IRQ_INPROGRESS;  in q40_irq_handler()
267 				do_IRQ(irq, fp);  in q40_irq_handler()
268 				q40_state[irq] &= ~IRQ_INPROGRESS;  in q40_irq_handler()
272 				/* getting another chance to disable the IRQ        */  in q40_irq_handler()
276 					if (irq > 4) {  in q40_irq_handler()
278 						enable_irq(irq);  in q40_irq_handler()
282 					/*pr_info("reenabling irq %d\n", irq); */  in q40_irq_handler()
297 	/* should test whether keyboard irq is really enabled, doing it in defhand */  in q40_irq_handler()
306 	unsigned int irq = data->irq;  in q40_irq_enable()  local
308 	if (irq >= 5 && irq <= 15) {  in q40_irq_enable()
320 	unsigned int irq = data->irq;  in q40_irq_disable()  local
327 	if (irq >= 5 && irq <= 15) {  in q40_irq_disable()