diff options
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/include/asm/mac_oss.h | 19 | ||||
| -rw-r--r-- | arch/m68k/include/asm/macints.h | 6 | ||||
| -rw-r--r-- | arch/m68k/mac/config.c | 10 | ||||
| -rw-r--r-- | arch/m68k/mac/iop.c | 8 | ||||
| -rw-r--r-- | arch/m68k/mac/macints.c | 45 | ||||
| -rw-r--r-- | arch/m68k/mac/oss.c | 97 |
6 files changed, 76 insertions, 109 deletions
diff --git a/arch/m68k/include/asm/mac_oss.h b/arch/m68k/include/asm/mac_oss.h index 3f04a66f0933..425fbff4f4d8 100644 --- a/arch/m68k/include/asm/mac_oss.h +++ b/arch/m68k/include/asm/mac_oss.h @@ -58,25 +58,6 @@ #define OSS_POWEROFF 0x80 -/* - * OSS Interrupt levels for various sub-systems - * - * This mapping is laid out with two things in mind: first, we try to keep - * things on their own levels to avoid having to do double-dispatches. Second, - * the levels match as closely as possible the alternate IRQ mapping mode (aka - * "A/UX mode") available on some VIA machines. - */ - -#define OSS_IRQLEV_DISABLED 0 -#define OSS_IRQLEV_IOPISM 1 /* ADB? */ -#define OSS_IRQLEV_SCSI IRQ_AUTO_2 -#define OSS_IRQLEV_NUBUS IRQ_AUTO_3 /* keep this on its own level */ -#define OSS_IRQLEV_IOPSCC IRQ_AUTO_4 /* matches VIA alternate mapping */ -#define OSS_IRQLEV_SOUND IRQ_AUTO_5 /* matches VIA alternate mapping */ -#define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */ -#define OSS_IRQLEV_VIA1 IRQ_AUTO_6 /* matches VIA alternate mapping */ -#define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */ - #ifndef __ASSEMBLY__ struct mac_oss { diff --git a/arch/m68k/include/asm/macints.h b/arch/m68k/include/asm/macints.h index ebe1b70fe90c..92aa8a4c2d03 100644 --- a/arch/m68k/include/asm/macints.h +++ b/arch/m68k/include/asm/macints.h @@ -104,6 +104,9 @@ #define IRQ_PSC4_3 (35) #define IRQ_MAC_MACE_DMA IRQ_PSC4_3 +/* OSS Level 4 interrupts */ +#define IRQ_MAC_SCC (33) + /* Level 5 (PSC, AV Macs only) interrupts */ #define IRQ_PSC5_0 (40) #define IRQ_PSC5_1 (41) @@ -131,9 +134,6 @@ #define IRQ_BABOON_2 (66) #define IRQ_BABOON_3 (67) -/* On non-PSC machines, the serial ports share an IRQ */ -#define IRQ_MAC_SCC IRQ_AUTO_4 - #define SLOT2IRQ(x) (x + 47) #define IRQ2SLOT(x) (x - 47) diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c index 12e564c62957..101a8b7e2d52 100644 --- a/arch/m68k/mac/config.c +++ b/arch/m68k/mac/config.c @@ -893,8 +893,14 @@ static void __init mac_identify(void) scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC_B; break; default: - scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC; - scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC; + /* On non-PSC machines, the serial ports share an IRQ. */ + if (macintosh_config->ident == MAC_MODEL_IIFX) { + scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC; + scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC; + } else { + scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_AUTO_4; + scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_AUTO_4; + } break; } diff --git a/arch/m68k/mac/iop.c b/arch/m68k/mac/iop.c index a5462cc0bfd6..7d8d46127ad9 100644 --- a/arch/m68k/mac/iop.c +++ b/arch/m68k/mac/iop.c @@ -115,7 +115,6 @@ #include <asm/macintosh.h> #include <asm/macints.h> #include <asm/mac_iop.h> -#include <asm/mac_oss.h> /*#define DEBUG_IOP*/ @@ -149,8 +148,6 @@ static struct listener iop_listeners[NUM_IOPS][NUM_IOP_CHAN]; irqreturn_t iop_ism_irq(int, void *); -extern void oss_irq_enable(int); - /* * Private access functions */ @@ -304,11 +301,10 @@ void __init iop_init(void) void __init iop_register_interrupts(void) { if (iop_ism_present) { - if (oss_present) { - if (request_irq(OSS_IRQLEV_IOPISM, iop_ism_irq, 0, + if (macintosh_config->ident == MAC_MODEL_IIFX) { + if (request_irq(IRQ_MAC_ADB, iop_ism_irq, 0, "ISM IOP", (void *)IOP_NUM_ISM)) pr_err("Couldn't register ISM IOP interrupt\n"); - oss_irq_enable(IRQ_MAC_ADB); } else { if (request_irq(IRQ_VIA2_0, iop_ism_irq, 0, "ISM IOP", (void *)IOP_NUM_ISM)) diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c index 74f5a97c9860..5c1a6b2ff0af 100644 --- a/arch/m68k/mac/macints.c +++ b/arch/m68k/mac/macints.c @@ -26,10 +26,6 @@ * - slot 6: timer 1 (not on IIci) * - slot 7: status of IRQ; signals 'any enabled int.' * - * 2 - OSS (IIfx only?) - * - slot 0: SCSI interrupt - * - slot 1: Sound interrupt - * * Levels 3-6 vary by machine type. For VIA or RBV Macintoshes: * * 3 - unused (?) @@ -54,21 +50,18 @@ * * 6 - VIA1 * - * For OSS Macintoshes (IIfx only at this point): + * For OSS Macintoshes (IIfx only), we apply an interrupt mapping similar to + * the Quadra (A/UX) mapping: * - * 3 - Nubus interrupt - * - slot 0: Slot $9 - * - slot 1: Slot $A - * - slot 2: Slot $B - * - slot 3: Slot $C - * - slot 4: Slot $D - * - slot 5: Slot $E + * 1 - ISM IOP (ADB) * - * 4 - SCC IOP + * 2 - SCSI * - * 5 - ISM IOP (ADB?) + * 3 - NuBus * - * 6 - unused + * 4 - SCC IOP + * + * 6 - VIA1 * * For PSC Macintoshes (660AV, 840AV): * @@ -112,14 +105,6 @@ * case. They're hidden behind the Nubus slot $C interrupt thus adding a * third layer of indirection. Why oh why did the Apple engineers do that? * - * - We support "fast" and "slow" handlers, just like the Amiga port. The - * fast handlers are called first and with all interrupts disabled. They - * are expected to execute quickly (hence the name). The slow handlers are - * called last with interrupts enabled and the interrupt level restored. - * They must therefore be reentrant. - * - * TODO: - * */ #include <linux/types.h> @@ -216,8 +201,6 @@ void mac_irq_enable(struct irq_data *data) switch(irq_src) { case 1: - via_irq_enable(irq); - break; case 2: case 7: if (oss_present) @@ -226,6 +209,7 @@ void mac_irq_enable(struct irq_data *data) via_irq_enable(irq); break; case 3: + case 4: case 5: case 6: if (psc_present) @@ -233,10 +217,6 @@ void mac_irq_enable(struct irq_data *data) else if (oss_present) oss_irq_enable(irq); break; - case 4: - if (psc_present) - psc_irq_enable(irq); - break; case 8: if (baboon_present) baboon_irq_enable(irq); @@ -251,8 +231,6 @@ void mac_irq_disable(struct irq_data *data) switch(irq_src) { case 1: - via_irq_disable(irq); - break; case 2: case 7: if (oss_present) @@ -261,6 +239,7 @@ void mac_irq_disable(struct irq_data *data) via_irq_disable(irq); break; case 3: + case 4: case 5: case 6: if (psc_present) @@ -268,10 +247,6 @@ void mac_irq_disable(struct irq_data *data) else if (oss_present) oss_irq_disable(irq); break; - case 4: - if (psc_present) - psc_irq_disable(irq); - break; case 8: if (baboon_present) baboon_irq_disable(irq); diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c index fdc0f843ff6f..6c4c882c126e 100644 --- a/arch/m68k/mac/oss.c +++ b/arch/m68k/mac/oss.c @@ -1,5 +1,5 @@ /* - * OSS handling + * Operating System Services (OSS) chip handling * Written by Joshua M. Thompson (funaho@jurai.org) * * @@ -49,10 +49,8 @@ void __init oss_init(void) /* do this by setting the source's interrupt level to zero. */ for (i = 0; i <= OSS_NUM_SOURCES; i++) { - oss->irq_level[i] = OSS_IRQLEV_DISABLED; + oss->irq_level[i] = 0; } - /* If we disable VIA1 here, we never really handle it... */ - oss->irq_level[OSS_VIA1] = OSS_IRQLEV_VIA1; } /* @@ -64,17 +62,13 @@ void __init oss_nubus_init(void) } /* - * Handle miscellaneous OSS interrupts. Right now that's just sound - * and SCSI; everything else is routed to its own autovector IRQ. + * Handle miscellaneous OSS interrupts. */ static void oss_irq(unsigned int irq, struct irq_desc *desc) { - int events; - - events = oss->irq_pending & (OSS_IP_SOUND|OSS_IP_SCSI); - if (!events) - return; + int events = oss->irq_pending & + (OSS_IP_IOPSCC | OSS_IP_SCSI | OSS_IP_IOPISM); #ifdef DEBUG_IRQS if ((console_loglevel == 10) && !(events & OSS_IP_SCSI)) { @@ -82,16 +76,20 @@ static void oss_irq(unsigned int irq, struct irq_desc *desc) (int) oss->irq_pending); } #endif - /* FIXME: how do you clear a pending IRQ? */ - if (events & OSS_IP_SOUND) { - oss->irq_pending &= ~OSS_IP_SOUND; - /* FIXME: call sound handler */ - } else if (events & OSS_IP_SCSI) { + if (events & OSS_IP_IOPSCC) { + oss->irq_pending &= ~OSS_IP_IOPSCC; + generic_handle_irq(IRQ_MAC_SCC); + } + + if (events & OSS_IP_SCSI) { oss->irq_pending &= ~OSS_IP_SCSI; generic_handle_irq(IRQ_MAC_SCSI); - } else { - /* FIXME: error check here? */ + } + + if (events & OSS_IP_IOPISM) { + oss->irq_pending &= ~OSS_IP_IOPISM; + generic_handle_irq(IRQ_MAC_ADB); } } @@ -130,14 +128,29 @@ static void oss_nubus_irq(unsigned int irq, struct irq_desc *desc) /* * Register the OSS and NuBus interrupt dispatchers. + * + * This IRQ mapping is laid out with two things in mind: first, we try to keep + * things on their own levels to avoid having to do double-dispatches. Second, + * the levels match as closely as possible the alternate IRQ mapping mode (aka + * "A/UX mode") available on some VIA machines. */ +#define OSS_IRQLEV_IOPISM IRQ_AUTO_1 +#define OSS_IRQLEV_SCSI IRQ_AUTO_2 +#define OSS_IRQLEV_NUBUS IRQ_AUTO_3 +#define OSS_IRQLEV_IOPSCC IRQ_AUTO_4 +#define OSS_IRQLEV_VIA1 IRQ_AUTO_6 + void __init oss_register_interrupts(void) { - irq_set_chained_handler(OSS_IRQLEV_SCSI, oss_irq); - irq_set_chained_handler(OSS_IRQLEV_NUBUS, oss_nubus_irq); - irq_set_chained_handler(OSS_IRQLEV_SOUND, oss_irq); - irq_set_chained_handler(OSS_IRQLEV_VIA1, via1_irq); + irq_set_chained_handler(OSS_IRQLEV_IOPISM, oss_irq); + irq_set_chained_handler(OSS_IRQLEV_SCSI, oss_irq); + irq_set_chained_handler(OSS_IRQLEV_NUBUS, oss_nubus_irq); + irq_set_chained_handler(OSS_IRQLEV_IOPSCC, oss_irq); + irq_set_chained_handler(OSS_IRQLEV_VIA1, via1_irq); + + /* OSS_VIA1 gets enabled here because it has no machspec interrupt. */ + oss->irq_level[OSS_VIA1] = IRQ_AUTO_6; } /* @@ -156,13 +169,13 @@ void oss_irq_enable(int irq) { switch(irq) { case IRQ_MAC_SCC: oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_IOPSCC; - break; + return; case IRQ_MAC_ADB: oss->irq_level[OSS_IOPISM] = OSS_IRQLEV_IOPISM; - break; + return; case IRQ_MAC_SCSI: oss->irq_level[OSS_SCSI] = OSS_IRQLEV_SCSI; - break; + return; case IRQ_NUBUS_9: case IRQ_NUBUS_A: case IRQ_NUBUS_B: @@ -171,13 +184,11 @@ void oss_irq_enable(int irq) { case IRQ_NUBUS_E: irq -= NUBUS_SOURCE_BASE; oss->irq_level[irq] = OSS_IRQLEV_NUBUS; - break; -#ifdef DEBUG_IRQUSE - default: - printk("%s unknown irq %d\n", __func__, irq); - break; -#endif + return; } + + if (IRQ_SRC(irq) == 1) + via_irq_enable(irq); } /* @@ -193,14 +204,14 @@ void oss_irq_disable(int irq) { #endif switch(irq) { case IRQ_MAC_SCC: - oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_DISABLED; - break; + oss->irq_level[OSS_IOPSCC] = 0; + return; case IRQ_MAC_ADB: - oss->irq_level[OSS_IOPISM] = OSS_IRQLEV_DISABLED; - break; + oss->irq_level[OSS_IOPISM] = 0; + return; case IRQ_MAC_SCSI: - oss->irq_level[OSS_SCSI] = OSS_IRQLEV_DISABLED; - break; + oss->irq_level[OSS_SCSI] = 0; + return; case IRQ_NUBUS_9: case IRQ_NUBUS_A: case IRQ_NUBUS_B: @@ -208,12 +219,10 @@ void oss_irq_disable(int irq) { case IRQ_NUBUS_D: case IRQ_NUBUS_E: irq -= NUBUS_SOURCE_BASE; - oss->irq_level[irq] = OSS_IRQLEV_DISABLED; - break; -#ifdef DEBUG_IRQUSE - default: - printk("%s unknown irq %d\n", __func__, irq); - break; -#endif + oss->irq_level[irq] = 0; + return; } + + if (IRQ_SRC(irq) == 1) + via_irq_disable(irq); } |