aboutsummaryrefslogtreecommitdiff
path: root/include/asm-x86/visws/cobalt.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/visws/cobalt.h')
-rw-r--r--include/asm-x86/visws/cobalt.h125
1 files changed, 125 insertions, 0 deletions
diff --git a/include/asm-x86/visws/cobalt.h b/include/asm-x86/visws/cobalt.h
new file mode 100644
index 00000000000..995258831b7
--- /dev/null
+++ b/include/asm-x86/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
+static inline void co_cpu_write(unsigned long reg, unsigned long v)
+{
+ *((volatile unsigned long *)(CO_CPU_VADDR+reg))=v;
+}
+
+static inline unsigned long co_cpu_read(unsigned long reg)
+{
+ return *((volatile unsigned long *)(CO_CPU_VADDR+reg));
+}
+
+static inline void co_apic_write(unsigned long reg, unsigned long v)
+{
+ *((volatile unsigned long *)(CO_APIC_VADDR+reg))=v;
+}
+
+static 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 */