From 237036de6540a377268db5bb2b9c8efdccbe51c1 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Wed, 15 Jan 2014 10:31:54 +0000 Subject: [PATCH] MIPS: Malta: Make use of generic CM support Remove the Malta-specific CM probe code and instead make use of the newly added generic CM code. Signed-off-by: Paul Burton Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6364/ Signed-off-by: Ralf Baechle --- arch/mips/Kconfig | 3 ++ arch/mips/include/asm/smp-ops.h | 5 +++ arch/mips/mti-malta/malta-init.c | 8 ++-- arch/mips/mti-malta/malta-int.c | 70 ++++++------------------------- arch/mips/mti-malta/malta-setup.c | 4 +- arch/mips/pci/pci-malta.c | 22 +++++----- 6 files changed, 38 insertions(+), 74 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index a706779349a7..d7543f243a83 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -868,6 +868,7 @@ config CEVT_R4K bool config CEVT_GIC + select MIPS_CM bool config CEVT_SB1250 @@ -886,6 +887,7 @@ config CSRC_R4K bool config CSRC_GIC + select MIPS_CM bool config CSRC_SB1250 @@ -1030,6 +1032,7 @@ config IRQ_GT641XX bool config IRQ_GIC + select MIPS_CM bool config PCI_GT64XXX_PCI0 diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h index a02c9d4f9b55..a042d24534bd 100644 --- a/arch/mips/include/asm/smp-ops.h +++ b/arch/mips/include/asm/smp-ops.h @@ -13,6 +13,8 @@ #include +#include + #ifdef CONFIG_SMP #include @@ -79,6 +81,9 @@ static inline int register_cmp_smp_ops(void) #ifdef CONFIG_MIPS_CMP extern struct plat_smp_ops cmp_smp_ops; + if (!mips_cm_present()) + return -ENODEV; + register_smp_ops(&cmp_smp_ops); return 0; diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c index fcebfced26d0..85a62b036df0 100644 --- a/arch/mips/mti-malta/malta-init.c +++ b/arch/mips/mti-malta/malta-init.c @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include #include @@ -276,10 +276,10 @@ mips_pci_controller: console_config(); #endif /* Early detection of CMP support */ - if (gcmp_probe(GCMP_BASE_ADDR, GCMP_ADDRSPACE_SZ)) - if (!register_cmp_smp_ops()) - return; + mips_cm_probe(); + if (!register_cmp_smp_ops()) + return; if (!register_vsmp_smp_ops()) return; diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index ca3e3a46a42f..93103f81bf57 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -33,13 +34,10 @@ #include #include #include -#include #include #include -int gcmp_present = -1; static unsigned long _msc01_biu_base; -static unsigned long _gcmp_base; static unsigned int ipi_map[NR_CPUS]; static DEFINE_RAW_SPINLOCK(mips_irq_lock); @@ -418,48 +416,6 @@ static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { }; #undef X -/* - * GCMP needs to be detected before any SMP initialisation - */ -int __init gcmp_probe(unsigned long addr, unsigned long size) -{ - if ((mips_revision_sconid != MIPS_REVISION_SCON_ROCIT) && - (mips_revision_sconid != MIPS_REVISION_SCON_GT64120)) { - gcmp_present = 0; - pr_debug("GCMP NOT present\n"); - return gcmp_present; - } - - if (gcmp_present >= 0) - return gcmp_present; - - _gcmp_base = (unsigned long) ioremap_nocache(GCMP_BASE_ADDR, - GCMP_ADDRSPACE_SZ); - _msc01_biu_base = (unsigned long) ioremap_nocache(MSC01_BIU_REG_BASE, - MSC01_BIU_ADDRSPACE_SZ); - gcmp_present = ((GCMPGCB(GCMPB) & GCMP_GCB_GCMPB_GCMPBASE_MSK) == - GCMP_BASE_ADDR); - - if (gcmp_present) - pr_debug("GCMP present\n"); - return gcmp_present; -} - -/* Return the number of IOCU's present */ -int __init gcmp_niocu(void) -{ - return gcmp_present ? ((GCMPGCB(GC) & GCMP_GCB_GC_NUMIOCU_MSK) >> - GCMP_GCB_GC_NUMIOCU_SHF) : 0; -} - -/* Set GCMP region attributes */ -void __init gcmp_setregion(int region, unsigned long base, - unsigned long mask, int type) -{ - GCMPGCBn(CMxBASE, region) = base; - GCMPGCBn(CMxMASK, region) = mask | type; -} - #if defined(CONFIG_MIPS_MT_SMP) static void __init fill_ipi_map1(int baseintr, int cpu, int cpupin) { @@ -496,8 +452,8 @@ void __init arch_init_irq(void) if (!cpu_has_veic) mips_cpu_irq_init(); - if (gcmp_present) { - GCMPGCB(GICBA) = GIC_BASE_ADDR | GCMP_GCB_GICBA_EN_MSK; + if (mips_cm_present()) { + write_gcr_gic_base(GIC_BASE_ADDR | CM_GCR_GIC_BASE_GICEN_MSK); gic_present = 1; } else { if (mips_revision_sconid == MIPS_REVISION_SCON_ROCIT) { @@ -584,7 +540,7 @@ void __init arch_init_irq(void) #endif gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map, ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE); - if (!gcmp_present) { + if (!mips_cm_present()) { /* Enable the GIC */ i = REG(_msc01_biu_base, MSC01_SC_CFG); REG(_msc01_biu_base, MSC01_SC_CFG) = @@ -708,16 +664,16 @@ int malta_be_handler(struct pt_regs *regs, int is_fixup) /* This duplicates the handling in do_be which seems wrong */ int retval = is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; - if (gcmp_present) { - unsigned long cm_error = GCMPGCB(GCMEC); - unsigned long cm_addr = GCMPGCB(GCMEA); - unsigned long cm_other = GCMPGCB(GCMEO); + if (mips_cm_present()) { + unsigned long cm_error = read_gcr_error_cause(); + unsigned long cm_addr = read_gcr_error_addr(); + unsigned long cm_other = read_gcr_error_mult(); unsigned long cause, ocause; char buf[256]; - cause = (cm_error & GCMP_GCB_GMEC_ERROR_TYPE_MSK); + cause = cm_error & CM_GCR_ERROR_CAUSE_ERRTYPE_MSK; if (cause != 0) { - cause >>= GCMP_GCB_GMEC_ERROR_TYPE_SHF; + cause >>= CM_GCR_ERROR_CAUSE_ERRTYPE_SHF; if (cause < 16) { unsigned long cca_bits = (cm_error >> 15) & 7; unsigned long tr_bits = (cm_error >> 12) & 7; @@ -748,8 +704,8 @@ int malta_be_handler(struct pt_regs *regs, int is_fixup) mcmd[cmd_bits], sport_bits); } - ocause = (cm_other & GCMP_GCB_GMEO_ERROR_2ND_MSK) >> - GCMP_GCB_GMEO_ERROR_2ND_SHF; + ocause = (cm_other & CM_GCR_ERROR_MULT_ERR2ND_MSK) >> + CM_GCR_ERROR_MULT_ERR2ND_SHF; pr_err("CM_ERROR=%08lx %s <%s>\n", cm_error, causes[cause], buf); @@ -757,7 +713,7 @@ int malta_be_handler(struct pt_regs *regs, int is_fixup) pr_err("CM_OTHER=%08lx %s\n", cm_other, causes[ocause]); /* reprime cause register */ - GCMPGCB(GCMEC) = 0; + write_gcr_error_cause(0); } } diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index c72a06936781..01a55f3242de 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -26,12 +26,12 @@ #include #include +#include #include #include #include #include #include -#include #ifdef CONFIG_VT #include #endif @@ -127,7 +127,7 @@ static int __init plat_enable_iocoherency(void) BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); pr_info("Enabled Bonito IOBC coherency\n"); } - } else if (gcmp_niocu() != 0) { + } else if (mips_cm_numiocu() != 0) { /* Nothing special needs to be done to enable coherency */ pr_info("CMP IOCU detected\n"); if ((*(unsigned int *)0xbf403000 & 0x81) != 0x81) { diff --git a/arch/mips/pci/pci-malta.c b/arch/mips/pci/pci-malta.c index f1a73890dd4f..cfbbc3e3e914 100644 --- a/arch/mips/pci/pci-malta.c +++ b/arch/mips/pci/pci-malta.c @@ -27,7 +27,7 @@ #include #include -#include +#include #include #include #include @@ -201,11 +201,11 @@ void __init mips_pcibios_init(void) msc_mem_resource.start = start & mask; msc_mem_resource.end = (start & mask) | ~mask; msc_controller.mem_offset = (start & mask) - (map & mask); -#ifdef CONFIG_MIPS_CMP - if (gcmp_niocu()) - gcmp_setregion(0, start, mask, - GCMP_GCB_GCMPB_CMDEFTGT_IOCU1); -#endif + if (mips_cm_numiocu()) { + write_gcr_reg0_base(start); + write_gcr_reg0_mask(mask | + CM_GCR_REGn_MASK_CMTGT_IOCU0); + } MSC_READ(MSC01_PCI_SC2PIOBASL, start); MSC_READ(MSC01_PCI_SC2PIOMSKL, mask); MSC_READ(MSC01_PCI_SC2PIOMAPL, map); @@ -213,11 +213,11 @@ void __init mips_pcibios_init(void) msc_io_resource.end = (map & mask) | ~mask; msc_controller.io_offset = 0; ioport_resource.end = ~mask; -#ifdef CONFIG_MIPS_CMP - if (gcmp_niocu()) - gcmp_setregion(1, start, mask, - GCMP_GCB_GCMPB_CMDEFTGT_IOCU1); -#endif + if (mips_cm_numiocu()) { + write_gcr_reg1_base(start); + write_gcr_reg1_mask(mask | + CM_GCR_REGn_MASK_CMTGT_IOCU0); + } /* If ranges overlap I/O takes precedence. */ start = start & mask; end = start | ~mask; -- 2.39.5