patch-2.2.0-pre7 linux/include/asm-alpha/core_polaris.h

• Lines: 240
• Date: Sun Jan 10 09:59:59 1999
• Orig file: v2.2.0-pre6/linux/include/asm-alpha/core_polaris.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.0-pre6/linux/include/asm-alpha/core_polaris.h linux/include/asm-alpha/core_polaris.h
@@ -0,0 +1,239 @@
+#ifndef __ALPHA_POLARIS__H__
+#define __ALPHA_POLARIS__H__
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <asm/compiler.h>
+
+/*
+ * POLARIS is the internal name for a core logic chipset which provides
+ * memory controller and PCI access for the 21164PC chip based systems.
+ *
+ * This file is based on:
+ *
+ * Polaris System Controller
+ * Device Functional Specification
+ * 22-Jan-98
+ * Rev. 4.2
+ *
+ */
+
+/* Polaris memory regions */
+#define		POLARIS_SPARSE_MEM_BASE		(IDENT_ADDR + 0xf800000000)
+#define		POLARIS_DENSE_MEM_BASE		(IDENT_ADDR + 0xf900000000)
+#define 	POLARIS_SPARSE_IO_BASE		(IDENT_ADDR + 0xf980000000)
+#define		POLARIS_SPARSE_CONFIG_BASE	(IDENT_ADDR + 0xf9c0000000)
+#define		POLARIS_IACK_BASE		(IDENT_ADDR + 0xf9f8000000)
+#define		POLARIS_DENSE_IO_BASE		(IDENT_ADDR + 0xf9fc000000)
+#define		POLARIS_DENSE_CONFIG_BASE	(IDENT_ADDR + 0xf9fe000000)
+
+/* The Polaris command/status registers live in PCI Config space for
+ * bus 0/device 0.  As such, they may be bytes, words, or doublewords.
+ */
+#define		POLARIS_W_VENID		(POLARIS_DENSE_CONFIG_BASE)
+#define		POLARIS_W_DEVID		(POLARIS_DENSE_CONFIG_BASE+2)
+#define		POLARIS_W_CMD		(POLARIS_DENSE_CONFIG_BASE+4)
+#define		POLARIS_W_STATUS	(POLARIS_DENSE_CONFIG_BASE+6)
+
+/* No HAE address.  Polaris has no concept of an HAE, since it
+ * supports transfers of all sizes in dense space.
+ */
+
+#define POLARIS_DMA_WIN_BASE_DEFAULT	0x80000000	/* fixed, 2G @ 2G */
+#define POLARIS_DMA_WIN_SIZE_DEFAULT	0x80000000	/* fixed, 2G @ 2G */
+
+#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM_SETUP)
+#define POLARIS_DMA_WIN_BASE		alpha_mv.dma_win_base
+#define POLARIS_DMA_WIN_SIZE		alpha_mv.dma_win_size
+#else
+#define POLARIS_DMA_WIN_BASE		POLARIS_DMA_WIN_BASE_DEFAULT
+#define POLARIS_DMA_WIN_SIZE		POLARIS_DMA_WIN_SIZE_DEFAULT
+#endif
+
+/*
+ * Data structure for handling POLARIS machine checks:
+ */
+struct el_POLARIS_sysdata_mcheck {
+    u_long      psc_status;
+    u_long	psc_pcictl0;
+    u_long	psc_pcictl1;
+    u_long	psc_pcictl2;
+};
+
+ #ifdef __KERNEL__
+
+#ifndef __EXTERN_INLINE
+#define __EXTERN_INLINE extern inline
+#define __IO_EXTERN_INLINE
+#endif
+
+__EXTERN_INLINE unsigned long polaris_virt_to_bus(void * address)
+{
+	return virt_to_phys(address) + POLARIS_DMA_WIN_BASE;
+}
+
+__EXTERN_INLINE void * polaris_bus_to_virt(unsigned long address)
+{
+	return phys_to_virt(address - POLARIS_DMA_WIN_BASE);
+}
+
+/*
+ * I/O functions:
+ *
+ * POLARIS, the PCI/memory support chipset for the PCA56 (21164PC)
+ * processors, can use either a sparse address  mapping scheme, or the 
+ * so-called byte-word PCI address space, to get at PCI memory and I/O.
+ *
+ * However, we will support only the BWX form.
+ */
+
+#define vucp	volatile unsigned char *
+#define vusp	volatile unsigned short *
+#define vuip	volatile unsigned int  *
+#define vulp	volatile unsigned long  *
+
+__EXTERN_INLINE unsigned int polaris_inb(unsigned long addr)
+{
+        return __kernel_ldbu(*(vucp)(addr + POLARIS_DENSE_IO_BASE));
+}
+
+__EXTERN_INLINE void polaris_outb(unsigned char b, unsigned long addr)
+{
+	__kernel_stb(b, *(vucp)(addr + POLARIS_DENSE_IO_BASE));
+	mb();
+}
+
+__EXTERN_INLINE unsigned int polaris_inw(unsigned long addr)
+{
+        return __kernel_ldwu(*(vusp)(addr + POLARIS_DENSE_IO_BASE));
+}
+
+__EXTERN_INLINE void polaris_outw(unsigned short b, unsigned long addr)
+{
+	__kernel_stw(b, *(vusp)(addr + POLARIS_DENSE_IO_BASE));
+	mb();
+}
+
+__EXTERN_INLINE unsigned int polaris_inl(unsigned long addr)
+{
+        return *(vuip)(addr + POLARIS_DENSE_IO_BASE);
+}
+
+__EXTERN_INLINE void polaris_outl(unsigned int b, unsigned long addr)
+{
+        *(vuip)(addr + POLARIS_DENSE_IO_BASE) = b;
+        mb();
+}
+
+/*
+ * Memory functions.  Polaris allows all accesses (byte/word
+ * as well as long/quad) to be done through dense space.
+ *
+ * We will only support DENSE access via BWX insns.
+ */
+
+__EXTERN_INLINE unsigned long polaris_readb(unsigned long addr)
+{
+        return __kernel_ldbu(*(vucp)(addr + POLARIS_DENSE_MEM_BASE));
+}
+
+__EXTERN_INLINE unsigned long polaris_readw(unsigned long addr)
+{
+        return __kernel_ldwu(*(vusp)(addr + POLARIS_DENSE_MEM_BASE));
+}
+
+__EXTERN_INLINE unsigned long polaris_readl(unsigned long addr)
+{
+        return *(vuip)(addr + POLARIS_DENSE_MEM_BASE);
+}
+
+__EXTERN_INLINE unsigned long polaris_readq(unsigned long addr)
+{
+        return *(vulp)(addr + POLARIS_DENSE_MEM_BASE);
+}
+
+__EXTERN_INLINE void polaris_writeb(unsigned char b, unsigned long addr)
+{
+        __kernel_stb(b, *(vucp)(addr + POLARIS_DENSE_MEM_BASE));
+        mb();
+}
+
+__EXTERN_INLINE void polaris_writew(unsigned short b, unsigned long addr)
+{
+        __kernel_stw(b, *(vusp)(addr + POLARIS_DENSE_MEM_BASE));
+        mb();
+}
+
+__EXTERN_INLINE void polaris_writel(unsigned int b, unsigned long addr)
+{
+        *(vuip)(addr + POLARIS_DENSE_MEM_BASE) = b;
+        mb();
+}
+
+__EXTERN_INLINE void polaris_writeq(unsigned long b, unsigned long addr)
+{
+        *(vulp)(addr + POLARIS_DENSE_MEM_BASE) = b;
+        mb();
+}
+
+/* Find the DENSE memory area for a given bus address.  */
+
+__EXTERN_INLINE unsigned long polaris_dense_mem(unsigned long addr)
+{
+        return POLARIS_DENSE_MEM_BASE;
+}
+
+#undef vucp
+#undef vusp
+#undef vuip
+#undef vulp
+
+#ifdef __WANT_IO_DEF
+
+#define virt_to_bus     polaris_virt_to_bus
+#define bus_to_virt     polaris_bus_to_virt
+
+#define __inb           polaris_inb
+#define __inw           polaris_inw
+#define __inl           polaris_inl
+#define __outb          polaris_outb
+#define __outw          polaris_outw
+#define __outl          polaris_outl
+#define __readb         polaris_readb
+#define __readw         polaris_readw
+#define __writeb        polaris_writeb
+#define __writew        polaris_writew
+#define __readl         polaris_readl
+#define __readq         polaris_readq
+#define __writel        polaris_writel
+#define __writeq        polaris_writeq
+#define dense_mem       polaris_dense_mem
+
+#define inb(port) __inb((port))
+#define inw(port) __inw((port))
+#define inl(port) __inl((port))
+
+#define outb(v, port) __outb((v),(port))
+#define outw(v, port) __outw((v),(port))
+#define outl(v, port) __outl((v),(port))
+
+#define readb(a)        __readb((unsigned long)(a))
+#define readw(a)        __readw((unsigned long)(a))
+#define readl(a)        __readl((unsigned long)(a))
+#define readq(a)        __readq((unsigned long)(a))
+
+#define writeb(v,a)     __writeb((v),(unsigned long)(a))
+#define writew(v,a)     __writew((v),(unsigned long)(a))
+#define writel(v,a)     __writel((v),(unsigned long)(a))
+#define writeq(v,a)     __writeq((v),(unsigned long)(a))
+
+#endif /* __WANT_IO_DEF */
+
+#ifdef __IO_EXTERN_INLINE
+#undef __EXTERN_INLINE
+#undef __IO_EXTERN_INLINE
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif /* __ALPHA_POLARIS__H__ */