diff options
Diffstat (limited to 'arch/mips/mips-boards/malta')
| -rw-r--r-- | arch/mips/mips-boards/malta/malta_int.c | 36 | ||||
| -rw-r--r-- | arch/mips/mips-boards/malta/malta_setup.c | 16 | ||||
| -rw-r--r-- | arch/mips/mips-boards/malta/malta_smtc.c | 50 |
3 files changed, 74 insertions, 28 deletions
diff --git a/arch/mips/mips-boards/malta/malta_int.c b/arch/mips/mips-boards/malta/malta_int.c index b73f21823c5..f010261b75d 100644 --- a/arch/mips/mips-boards/malta/malta_int.c +++ b/arch/mips/mips-boards/malta/malta_int.c @@ -124,7 +124,7 @@ static void corehi_irqdispatch(void) { unsigned int intedge, intsteer, pcicmd, pcibadaddr; unsigned int pcimstat, intisr, inten, intpol; - unsigned int intrcause,datalo,datahi; + unsigned int intrcause, datalo, datahi; struct pt_regs *regs = get_irq_regs(); printk("CoreHI interrupt, shouldn't happen, so we die here!!!\n"); @@ -178,7 +178,7 @@ static void corehi_irqdispatch(void) static inline int clz(unsigned long x) { - __asm__ ( + __asm__( " .set push \n" " .set mips32 \n" " clz %0, %1 \n" @@ -303,32 +303,32 @@ void __init arch_init_irq(void) case MIPS_REVISION_SCON_SOCIT: case MIPS_REVISION_SCON_ROCIT: if (cpu_has_veic) - init_msc_irqs (MIPS_MSC01_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs); + init_msc_irqs(MIPS_MSC01_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs); else - init_msc_irqs (MIPS_MSC01_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs); + init_msc_irqs(MIPS_MSC01_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs); break; case MIPS_REVISION_SCON_SOCITSC: case MIPS_REVISION_SCON_SOCITSCP: if (cpu_has_veic) - init_msc_irqs (MIPS_SOCITSC_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs); + init_msc_irqs(MIPS_SOCITSC_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs); else - init_msc_irqs (MIPS_SOCITSC_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs); + init_msc_irqs(MIPS_SOCITSC_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs); } if (cpu_has_veic) { - set_vi_handler (MSC01E_INT_I8259A, malta_hw0_irqdispatch); - set_vi_handler (MSC01E_INT_COREHI, corehi_irqdispatch); - setup_irq (MSC01E_INT_BASE+MSC01E_INT_I8259A, &i8259irq); - setup_irq (MSC01E_INT_BASE+MSC01E_INT_COREHI, &corehi_irqaction); + set_vi_handler(MSC01E_INT_I8259A, malta_hw0_irqdispatch); + set_vi_handler(MSC01E_INT_COREHI, corehi_irqdispatch); + setup_irq(MSC01E_INT_BASE+MSC01E_INT_I8259A, &i8259irq); + setup_irq(MSC01E_INT_BASE+MSC01E_INT_COREHI, &corehi_irqaction); } else if (cpu_has_vint) { - set_vi_handler (MIPSCPU_INT_I8259A, malta_hw0_irqdispatch); - set_vi_handler (MIPSCPU_INT_COREHI, corehi_irqdispatch); + set_vi_handler(MIPSCPU_INT_I8259A, malta_hw0_irqdispatch); + set_vi_handler(MIPSCPU_INT_COREHI, corehi_irqdispatch); #ifdef CONFIG_MIPS_MT_SMTC - setup_irq_smtc (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq, + setup_irq_smtc(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq, (0x100 << MIPSCPU_INT_I8259A)); - setup_irq_smtc (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, + setup_irq_smtc(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction, (0x100 << MIPSCPU_INT_COREHI)); /* * Temporary hack to ensure that the subsidiary device @@ -343,12 +343,12 @@ void __init arch_init_irq(void) irq_hwmask[i] = (0x100 << MIPSCPU_INT_I8259A); } #else /* Not SMTC */ - setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq); - setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction); + setup_irq(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq); + setup_irq(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction); #endif /* CONFIG_MIPS_MT_SMTC */ } else { - setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq); - setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction); + setup_irq(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq); + setup_irq(MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction); } } diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c index 8f1b78dfd89..9a2636e5624 100644 --- a/arch/mips/mips-boards/malta/malta_setup.c +++ b/arch/mips/mips-boards/malta/malta_setup.c @@ -36,7 +36,6 @@ #endif extern void mips_reboot_setup(void); -extern void mips_time_init(void); extern unsigned long mips_rtc_get_time(void); #ifdef CONFIG_KGDB @@ -100,7 +99,7 @@ void __init plat_mem_setup(void) enable_dma(4); #ifdef CONFIG_KGDB - kgdb_config (); + kgdb_config(); #endif if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) { @@ -109,7 +108,7 @@ void __init plat_mem_setup(void) argptr = prom_getcmdline(); if (strstr(argptr, "debug")) { BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE; - printk ("Enabled Bonito debug mode\n"); + printk("Enabled Bonito debug mode\n"); } else BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE; @@ -160,14 +159,14 @@ void __init plat_mem_setup(void) if (pciclock != 33 && !strstr (argptr, "idebus=")) { printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock); argptr += strlen(argptr); - sprintf (argptr, " idebus=%d", pciclock); + sprintf(argptr, " idebus=%d", pciclock); if (pciclock < 20 || pciclock > 66) - printk ("WARNING: IDE timing calculations will be incorrect\n"); + printk("WARNING: IDE timing calculations will be incorrect\n"); } } #endif #ifdef CONFIG_BLK_DEV_FD - fd_activate (); + fd_activate(); #endif #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) @@ -177,7 +176,7 @@ void __init plat_mem_setup(void) 0, /* orig-video-page */ 0, /* orig-video-mode */ 80, /* orig-video-cols */ - 0,0,0, /* ega_ax, ega_bx, ega_cx */ + 0, 0, 0, /* ega_ax, ega_bx, ega_cx */ 25, /* orig-video-lines */ VIDEO_TYPE_VGAC, /* orig-video-isVGA */ 16 /* orig-video-points */ @@ -185,7 +184,4 @@ void __init plat_mem_setup(void) #endif #endif mips_reboot_setup(); - - board_time_init = mips_time_init; - rtc_mips_get_time = mips_rtc_get_time; } diff --git a/arch/mips/mips-boards/malta/malta_smtc.c b/arch/mips/mips-boards/malta/malta_smtc.c index ae05d058cb3..5c980f4a48f 100644 --- a/arch/mips/mips-boards/malta/malta_smtc.c +++ b/arch/mips/mips-boards/malta/malta_smtc.c @@ -88,3 +88,53 @@ void __cpuinit prom_smp_finish(void) void prom_cpus_done(void) { } + +#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF +/* + * IRQ affinity hook + */ + + +void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity) +{ + cpumask_t tmask = affinity; + int cpu = 0; + void smtc_set_irq_affinity(unsigned int irq, cpumask_t aff); + + /* + * On the legacy Malta development board, all I/O interrupts + * are routed through the 8259 and combined in a single signal + * to the CPU daughterboard, and on the CoreFPGA2/3 34K models, + * that signal is brought to IP2 of both VPEs. To avoid racing + * concurrent interrupt service events, IP2 is enabled only on + * one VPE, by convention VPE0. So long as no bits are ever + * cleared in the affinity mask, there will never be any + * interrupt forwarding. But as soon as a program or operator + * sets affinity for one of the related IRQs, we need to make + * sure that we don't ever try to forward across the VPE boundry, + * at least not until we engineer a system where the interrupt + * _ack() or _end() function can somehow know that it corresponds + * to an interrupt taken on another VPE, and perform the appropriate + * restoration of Status.IM state using MFTR/MTTR instead of the + * normal local behavior. We also ensure that no attempt will + * be made to forward to an offline "CPU". + */ + + for_each_cpu_mask(cpu, affinity) { + if ((cpu_data[cpu].vpe_id != 0) || !cpu_online(cpu)) + cpu_clear(cpu, tmask); + } + irq_desc[irq].affinity = tmask; + + if (cpus_empty(tmask)) + /* + * We could restore a default mask here, but the + * runtime code can anyway deal with the null set + */ + printk(KERN_WARNING + "IRQ affinity leaves no legal CPU for IRQ %d\n", irq); + + /* Do any generic SMTC IRQ affinity setup */ + smtc_set_irq_affinity(irq, tmask); +} +#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */ |