9 files changed, 517 insertions, 0 deletions

diff --git a/include/asm-x86/mach-visws/cobalt.h b/include/asm-x86/mach-visws/cobalt.h
new file mode 100644
index 000000000000..33c36225a042
--- /dev/null
+++ b/include/asm-x86/mach-visws/cobalt.h
@@ -0,0 +1,125 @@
+#ifndef __I386_SGI_COBALT_H
+#define __I386_SGI_COBALT_H
+
+#include <asm/fixmap.h>
+
+/*
+ * Cobalt SGI Visual Workstation system ASIC
+ */ 
+
+#define CO_CPU_NUM_PHYS 0x1e00
+#define CO_CPU_TAB_PHYS (CO_CPU_NUM_PHYS + 2)
+
+#define CO_CPU_MAX 4
+
+#define CO_CPU_PHYS             0xc2000000
+#define CO_APIC_PHYS            0xc4000000
+
+/* see set_fixmap() and asm/fixmap.h */
+#define CO_CPU_VADDR            (fix_to_virt(FIX_CO_CPU))
+#define CO_APIC_VADDR           (fix_to_virt(FIX_CO_APIC))
+
+/* Cobalt CPU registers -- relative to CO_CPU_VADDR, use co_cpu_*() */
+#define CO_CPU_REV              0x08
+#define CO_CPU_CTRL             0x10
+#define CO_CPU_STAT             0x20
+#define CO_CPU_TIMEVAL          0x30
+
+/* CO_CPU_CTRL bits */
+#define CO_CTRL_TIMERUN         0x04            /* 0 == disabled */
+#define CO_CTRL_TIMEMASK        0x08            /* 0 == unmasked */
+
+/* CO_CPU_STATUS bits */
+#define CO_STAT_TIMEINTR        0x02    /* (r) 1 == int pend, (w) 0 == clear */
+
+/* CO_CPU_TIMEVAL value */
+#define CO_TIME_HZ              100000000       /* Cobalt core rate */
+
+/* Cobalt APIC registers -- relative to CO_APIC_VADDR, use co_apic_*() */
+#define CO_APIC_HI(n)           (((n) * 0x10) + 4)
+#define CO_APIC_LO(n)           ((n) * 0x10)
+#define CO_APIC_ID              0x0ffc
+
+/* CO_APIC_ID bits */
+#define CO_APIC_ENABLE          0x00000100
+
+/* CO_APIC_LO bits */
+#define CO_APIC_MASK            0x00010000      /* 0 = enabled */
+#define CO_APIC_LEVEL           0x00008000      /* 0 = edge */
+
+/*
+ * Where things are physically wired to Cobalt
+ * #defines with no board _<type>_<rev>_ are common to all (thus far)
+ */
+#define CO_APIC_IDE0            4
+#define CO_APIC_IDE1            2               /* Only on 320 */
+
+#define CO_APIC_8259            12              /* serial, floppy, par-l-l */
+
+/* Lithium PCI Bridge A -- "the one with 82557 Ethernet" */
+#define CO_APIC_PCIA_BASE0      0 /* and 1 */   /* slot 0, line 0 */
+#define CO_APIC_PCIA_BASE123    5 /* and 6 */   /* slot 0, line 1 */
+
+#define CO_APIC_PIIX4_USB       7               /* this one is weird */
+
+/* Lithium PCI Bridge B -- "the one with PIIX4" */
+#define CO_APIC_PCIB_BASE0      8 /* and 9-12 *//* slot 0, line 0 */
+#define CO_APIC_PCIB_BASE123    13 /* 14.15 */  /* slot 0, line 1 */
+
+#define CO_APIC_VIDOUT0         16
+#define CO_APIC_VIDOUT1         17
+#define CO_APIC_VIDIN0          18
+#define CO_APIC_VIDIN1          19
+
+#define CO_APIC_LI_AUDIO        22
+
+#define CO_APIC_AS              24
+#define CO_APIC_RE              25
+
+#define CO_APIC_CPU             28              /* Timer and Cache interrupt */
+#define CO_APIC_NMI             29
+#define CO_APIC_LAST            CO_APIC_NMI
+
+/*
+ * This is how irqs are assigned on the Visual Workstation.
+ * Legacy devices get irq's 1-15 (system clock is 0 and is CO_APIC_CPU).
+ * All other devices (including PCI) go to Cobalt and are irq's 16 on up.
+ */
+#define CO_IRQ_APIC0    16                      /* irq of apic entry 0 */
+#define IS_CO_APIC(irq) ((irq) >= CO_IRQ_APIC0)
+#define CO_IRQ(apic)    (CO_IRQ_APIC0 + (apic)) /* apic ent to irq */
+#define CO_APIC(irq)    ((irq) - CO_IRQ_APIC0)  /* irq to apic ent */
+#define CO_IRQ_IDE0     14                      /* knowledge of... */
+#define CO_IRQ_IDE1     15                      /* ... ide driver defaults! */
+#define CO_IRQ_8259     CO_IRQ(CO_APIC_8259)
+
+#ifdef CONFIG_X86_VISWS_APIC
+extern __inline void co_cpu_write(unsigned long reg, unsigned long v)
+{
+        *((volatile unsigned long *)(CO_CPU_VADDR+reg))=v;
+}
+
+extern __inline unsigned long co_cpu_read(unsigned long reg)
+{
+        return *((volatile unsigned long *)(CO_CPU_VADDR+reg));
+}            
+             
+extern __inline void co_apic_write(unsigned long reg, unsigned long v)
+{
+        *((volatile unsigned long *)(CO_APIC_VADDR+reg))=v;
+}            
+             
+extern __inline unsigned long co_apic_read(unsigned long reg)
+{
+        return *((volatile unsigned long *)(CO_APIC_VADDR+reg));
+}
+#endif
+
+extern char visws_board_type;
+
+#define VISWS_320       0
+#define VISWS_540       1
+
+extern char visws_board_rev;
+
+#endif /* __I386_SGI_COBALT_H */
diff --git a/include/asm-x86/mach-visws/entry_arch.h b/include/asm-x86/mach-visws/entry_arch.h
new file mode 100644
index 000000000000..b183fa6d83d9
--- /dev/null
+++ b/include/asm-x86/mach-visws/entry_arch.h
@@ -0,0 +1,23 @@
+/*
+ * The following vectors are part of the Linux architecture, there
+ * is no hardware IRQ pin equivalent for them, they are triggered
+ * through the ICC by us (IPIs)
+ */
+#ifdef CONFIG_X86_SMP
+BUILD_INTERRUPT(reschedule_interrupt,RESCHEDULE_VECTOR)
+BUILD_INTERRUPT(invalidate_interrupt,INVALIDATE_TLB_VECTOR)
+BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
+#endif
+
+/*
+ * every pentium local APIC has two 'local interrupts', with a
+ * soft-definable vector attached to both interrupts, one of
+ * which is a timer interrupt, the other one is error counter
+ * overflow. Linux uses the local APIC timer interrupt to get
+ * a much simpler SMP time architecture:
+ */
+#ifdef CONFIG_X86_LOCAL_APIC
+BUILD_INTERRUPT(apic_timer_interrupt,LOCAL_TIMER_VECTOR)
+BUILD_INTERRUPT(error_interrupt,ERROR_APIC_VECTOR)
+BUILD_INTERRUPT(spurious_interrupt,SPURIOUS_APIC_VECTOR)
+#endif
diff --git a/include/asm-x86/mach-visws/irq_vectors.h b/include/asm-x86/mach-visws/irq_vectors.h
new file mode 100644
index 000000000000..cb572d8db505
--- /dev/null
+++ b/include/asm-x86/mach-visws/irq_vectors.h
@@ -0,0 +1,62 @@
+#ifndef _ASM_IRQ_VECTORS_H
+#define _ASM_IRQ_VECTORS_H
+
+/*
+ * IDT vectors usable for external interrupt sources start
+ * at 0x20:
+ */
+#define FIRST_EXTERNAL_VECTOR   0x20
+
+#define SYSCALL_VECTOR          0x80
+
+/*
+ * Vectors 0x20-0x2f are used for ISA interrupts.
+ */
+
+/*
+ * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
+ *
+ *  some of the following vectors are 'rare', they are merged
+ *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
+ *  TLB, reschedule and local APIC vectors are performance-critical.
+ *
+ *  Vectors 0xf0-0xfa are free (reserved for future Linux use).
+ */
+#define SPURIOUS_APIC_VECTOR    0xff
+#define ERROR_APIC_VECTOR       0xfe
+#define INVALIDATE_TLB_VECTOR   0xfd
+#define RESCHEDULE_VECTOR       0xfc
+#define CALL_FUNCTION_VECTOR    0xfb
+
+#define THERMAL_APIC_VECTOR     0xf0
+/*
+ * Local APIC timer IRQ vector is on a different priority level,
+ * to work around the 'lost local interrupt if more than 2 IRQ
+ * sources per level' errata.
+ */
+#define LOCAL_TIMER_VECTOR      0xef
+
+/*
+ * First APIC vector available to drivers: (vectors 0x30-0xee)
+ * we start at 0x31 to spread out vectors evenly between priority
+ * levels. (0x80 is the syscall vector)
+ */
+#define FIRST_DEVICE_VECTOR     0x31
+#define FIRST_SYSTEM_VECTOR     0xef
+
+#define TIMER_IRQ 0
+
+/*
+ * IRQ definitions
+ */
+#define NR_VECTORS 256
+#define NR_IRQS 224
+#define NR_IRQ_VECTORS NR_IRQS
+
+#define FPU_IRQ                 13
+
+#define FIRST_VM86_IRQ          3
+#define LAST_VM86_IRQ           15
+#define invalid_vm86_irq(irq)   ((irq) < 3 || (irq) > 15)
+
+#endif /* _ASM_IRQ_VECTORS_H */
diff --git a/include/asm-x86/mach-visws/lithium.h b/include/asm-x86/mach-visws/lithium.h
new file mode 100644
index 000000000000..d443e68d0066
--- /dev/null
+++ b/include/asm-x86/mach-visws/lithium.h
@@ -0,0 +1,53 @@
+#ifndef __I386_SGI_LITHIUM_H
+#define __I386_SGI_LITHIUM_H
+
+#include <asm/fixmap.h>
+
+/*
+ * Lithium is the SGI Visual Workstation I/O ASIC
+ */
+
+#define LI_PCI_A_PHYS           0xfc000000      /* Enet is dev 3 */
+#define LI_PCI_B_PHYS           0xfd000000      /* PIIX4 is here */
+
+/* see set_fixmap() and asm/fixmap.h */
+#define LI_PCIA_VADDR   (fix_to_virt(FIX_LI_PCIA))
+#define LI_PCIB_VADDR   (fix_to_virt(FIX_LI_PCIB))
+
+/* Not a standard PCI? (not in linux/pci.h) */
+#define LI_PCI_BUSNUM   0x44                    /* lo8: primary, hi8: sub */
+#define LI_PCI_INTEN    0x46
+
+/* LI_PCI_INTENT bits */
+#define LI_INTA_0       0x0001
+#define LI_INTA_1       0x0002
+#define LI_INTA_2       0x0004
+#define LI_INTA_3       0x0008
+#define LI_INTA_4       0x0010
+#define LI_INTB         0x0020
+#define LI_INTC         0x0040
+#define LI_INTD         0x0080
+
+/* More special purpose macros... */
+extern __inline void li_pcia_write16(unsigned long reg, unsigned short v)
+{
+        *((volatile unsigned short *)(LI_PCIA_VADDR+reg))=v;
+}
+
+extern __inline unsigned short li_pcia_read16(unsigned long reg)
+{
+         return *((volatile unsigned short *)(LI_PCIA_VADDR+reg));
+}
+
+extern __inline void li_pcib_write16(unsigned long reg, unsigned short v)
+{
+        *((volatile unsigned short *)(LI_PCIB_VADDR+reg))=v;
+}
+
+extern __inline unsigned short li_pcib_read16(unsigned long reg)
+{
+        return *((volatile unsigned short *)(LI_PCIB_VADDR+reg));
+}
+
+#endif
+
diff --git a/include/asm-x86/mach-visws/mach_apic.h b/include/asm-x86/mach-visws/mach_apic.h
new file mode 100644
index 000000000000..efac6f0d139f
--- /dev/null
+++ b/include/asm-x86/mach-visws/mach_apic.h
@@ -0,0 +1,103 @@
+#ifndef __ASM_MACH_APIC_H
+#define __ASM_MACH_APIC_H
+
+#include <mach_apicdef.h>
+#include <asm/smp.h>
+
+#define APIC_DFR_VALUE  (APIC_DFR_FLAT)
+
+#define no_balance_irq (0)
+#define esr_disable (0)
+
+#define INT_DELIVERY_MODE dest_LowestPrio
+#define INT_DEST_MODE 1     /* logical delivery broadcast to all procs */
+
+#ifdef CONFIG_SMP
+ #define TARGET_CPUS cpu_online_map
+#else
+ #define TARGET_CPUS cpumask_of_cpu(0)
+#endif
+
+#define check_apicid_used(bitmap, apicid)       physid_isset(apicid, bitmap)
+#define check_apicid_present(bit)               physid_isset(bit, phys_cpu_present_map)
+
+static inline int apic_id_registered(void)
+{
+        return physid_isset(GET_APIC_ID(apic_read(APIC_ID)), phys_cpu_present_map);
+}
+
+/*
+ * Set up the logical destination ID.
+ *
+ * Intel recommends to set DFR, LDR and TPR before enabling
+ * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
+ * document number 292116).  So here it goes...
+ */
+static inline void init_apic_ldr(void)
+{
+        unsigned long val;
+
+        apic_write_around(APIC_DFR, APIC_DFR_VALUE);
+        val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
+        val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
+        apic_write_around(APIC_LDR, val);
+}
+
+static inline void summit_check(char *oem, char *productid) 
+{
+}
+
+static inline void setup_apic_routing(void)
+{
+}
+
+static inline int apicid_to_node(int logical_apicid)
+{
+        return 0;
+}
+
+/* Mapping from cpu number to logical apicid */
+static inline int cpu_to_logical_apicid(int cpu)
+{
+        return 1 << cpu;
+}
+
+static inline int cpu_present_to_apicid(int mps_cpu)
+{
+        if (mps_cpu < get_physical_broadcast())
+                return mps_cpu;
+        else
+                return BAD_APICID;
+}
+
+static inline physid_mask_t apicid_to_cpu_present(int apicid)
+{
+        return physid_mask_of_physid(apicid);
+}
+
+#define WAKE_SECONDARY_VIA_INIT
+
+static inline void setup_portio_remap(void)
+{
+}
+
+static inline void enable_apic_mode(void)
+{
+}
+
+static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
+{
+        return physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map);
+}
+
+static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+{
+        return cpus_addr(cpumask)[0];
+}
+
+static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
+{
+        return cpuid_apic >> index_msb;
+}
+
+#endif /* __ASM_MACH_APIC_H */
diff --git a/include/asm-x86/mach-visws/mach_apicdef.h b/include/asm-x86/mach-visws/mach_apicdef.h
new file mode 100644
index 000000000000..826cfa97d778
--- /dev/null
+++ b/include/asm-x86/mach-visws/mach_apicdef.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_MACH_APICDEF_H
+#define __ASM_MACH_APICDEF_H
+
+#define         APIC_ID_MASK            (0xF<<24)
+
+static inline unsigned get_apic_id(unsigned long x)
+{
+                return (((x)>>24)&0xF);
+}
+#define         GET_APIC_ID(x)  get_apic_id(x)
+
+#endif
diff --git a/include/asm-x86/mach-visws/piix4.h b/include/asm-x86/mach-visws/piix4.h
new file mode 100644
index 000000000000..83ea4f46e419
--- /dev/null
+++ b/include/asm-x86/mach-visws/piix4.h
@@ -0,0 +1,107 @@
+#ifndef __I386_SGI_PIIX_H
+#define __I386_SGI_PIIX_H
+
+/*
+ * PIIX4 as used on SGI Visual Workstations
+ */
+
+#define PIIX_PM_START           0x0F80
+
+#define SIO_GPIO_START          0x0FC0
+
+#define SIO_PM_START            0x0FC8
+
+#define PMBASE                  PIIX_PM_START
+#define GPIREG0                 (PMBASE+0x30)
+#define GPIREG(x)               (GPIREG0+((x)/8))
+#define GPIBIT(x)               (1 << ((x)%8))
+
+#define PIIX_GPI_BD_ID1         18
+#define PIIX_GPI_BD_ID2         19
+#define PIIX_GPI_BD_ID3         20
+#define PIIX_GPI_BD_ID4         21
+#define PIIX_GPI_BD_REG         GPIREG(PIIX_GPI_BD_ID1)
+#define PIIX_GPI_BD_MASK        (GPIBIT(PIIX_GPI_BD_ID1) | \
+                                GPIBIT(PIIX_GPI_BD_ID2) | \
+                                GPIBIT(PIIX_GPI_BD_ID3) | \
+                                GPIBIT(PIIX_GPI_BD_ID4) )
+
+#define PIIX_GPI_BD_SHIFT       (PIIX_GPI_BD_ID1 % 8)
+
+#define SIO_INDEX               0x2e
+#define SIO_DATA                0x2f
+
+#define SIO_DEV_SEL             0x7
+#define SIO_DEV_ENB             0x30
+#define SIO_DEV_MSB             0x60
+#define SIO_DEV_LSB             0x61
+
+#define SIO_GP_DEV              0x7
+
+#define SIO_GP_BASE             SIO_GPIO_START
+#define SIO_GP_MSB              (SIO_GP_BASE>>8)
+#define SIO_GP_LSB              (SIO_GP_BASE&0xff)
+
+#define SIO_GP_DATA1            (SIO_GP_BASE+0)
+
+#define SIO_PM_DEV              0x8
+
+#define SIO_PM_BASE             SIO_PM_START
+#define SIO_PM_MSB              (SIO_PM_BASE>>8)
+#define SIO_PM_LSB              (SIO_PM_BASE&0xff)
+#define SIO_PM_INDEX            (SIO_PM_BASE+0)
+#define SIO_PM_DATA             (SIO_PM_BASE+1)
+
+#define SIO_PM_FER2             0x1
+
+#define SIO_PM_GP_EN            0x80
+
+
+
+/*
+ * This is the dev/reg where generating a config cycle will
+ * result in a PCI special cycle.
+ */
+#define SPECIAL_DEV             0xff
+#define SPECIAL_REG             0x00
+
+/*
+ * PIIX4 needs to see a special cycle with the following data
+ * to be convinced the processor has gone into the stop grant
+ * state.  PIIX4 insists on seeing this before it will power
+ * down a system.
+ */
+#define PIIX_SPECIAL_STOP               0x00120002
+
+#define PIIX4_RESET_PORT        0xcf9
+#define PIIX4_RESET_VAL         0x6
+
+#define PMSTS_PORT              0xf80   // 2 bytes      PM Status
+#define PMEN_PORT               0xf82   // 2 bytes      PM Enable
+#define PMCNTRL_PORT            0xf84   // 2 bytes      PM Control
+
+#define PM_SUSPEND_ENABLE       0x2000  // start sequence to suspend state
+
+/*
+ * PMSTS and PMEN I/O bit definitions.
+ * (Bits are the same in both registers)
+ */
+#define PM_STS_RSM              (1<<15) // Resume Status
+#define PM_STS_PWRBTNOR         (1<<11) // Power Button Override
+#define PM_STS_RTC              (1<<10) // RTC status
+#define PM_STS_PWRBTN           (1<<8)  // Power Button Pressed?
+#define PM_STS_GBL              (1<<5)  // Global Status
+#define PM_STS_BM               (1<<4)  // Bus Master Status
+#define PM_STS_TMROF            (1<<0)  // Timer Overflow Status.
+
+/*
+ * Stop clock GPI register
+ */
+#define PIIX_GPIREG0                    (0xf80 + 0x30)
+
+/*
+ * Stop clock GPI bit in GPIREG0
+ */
+#define PIIX_GPI_STPCLK         0x4     // STPCLK signal routed back in
+
+#endif
diff --git a/include/asm-x86/mach-visws/setup_arch.h b/include/asm-x86/mach-visws/setup_arch.h
new file mode 100644
index 000000000000..33f700ef6831
--- /dev/null
+++ b/include/asm-x86/mach-visws/setup_arch.h
@@ -0,0 +1,8 @@
+/* Hook to call BIOS initialisation function */
+
+extern unsigned long sgivwfb_mem_phys;
+extern unsigned long sgivwfb_mem_size;
+
+/* no action for visws */
+
+#define ARCH_SETUP
diff --git a/include/asm-x86/mach-visws/smpboot_hooks.h b/include/asm-x86/mach-visws/smpboot_hooks.h
new file mode 100644
index 000000000000..d926471fa359
--- /dev/null
+++ b/include/asm-x86/mach-visws/smpboot_hooks.h
@@ -0,0 +1,24 @@
+static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
+{
+        CMOS_WRITE(0xa, 0xf);
+        local_flush_tlb();
+        Dprintk("1.\n");
+        *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
+        Dprintk("2.\n");
+        *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
+        Dprintk("3.\n");
+}
+
+/* for visws do nothing for any of these */
+
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+}
+
+static inline void smpboot_restore_warm_reset_vector(void)
+{
+}
+
+static inline void smpboot_setup_io_apic(void)
+{
+}