patch-2.3.16 linux/arch/alpha/kernel/machvec_impl.h

• Lines: 147
• Date: Tue Aug 31 10:50:44 1999
• Orig file: v2.3.15/linux/arch/alpha/kernel/machvec_impl.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.15/linux/arch/alpha/kernel/machvec_impl.h linux/arch/alpha/kernel/machvec_impl.h
@@ -0,0 +1,146 @@
+/*
+ *	linux/arch/alpha/kernel/machvec.h
+ *
+ *	Copyright (C) 1997, 1998  Richard Henderson
+ *
+ * This file has goodies to help simplify instantiation of machine vectors.
+ */
+
+#include <linux/config.h>
+
+/* Whee.  Both TSUNAMI and POLARIS don't have an HAE.  Fix things up for
+   the GENERIC kernel by defining the HAE address to be that of the cache.
+   Now we can read and write it as we like.  ;-)  */
+#define TSUNAMI_HAE_ADDRESS	(&alpha_mv.hae_cache)
+#define POLARIS_HAE_ADDRESS	(&alpha_mv.hae_cache)
+
+#if CIA_ONE_HAE_WINDOW
+#define CIA_HAE_ADDRESS		(&alpha_mv.hae_cache)
+#endif
+#if MCPCIA_ONE_HAE_WINDOW
+#define MCPCIA_HAE_ADDRESS	(&alpha_mv.hae_cache)
+#endif
+
+/* Only a few systems don't define IACK_SC, handling all interrupts through
+   the SRM console.  But splitting out that one case from IO() below
+   seems like such a pain.  Define this to get things to compile.  */
+#define JENSEN_IACK_SC		1
+#define T2_IACK_SC		1
+
+
+/*
+ * Some helpful macros for filling in the blanks.
+ */
+
+#define CAT1(x,y)  x##y
+#define CAT(x,y)   CAT1(x,y)
+
+#define DO_DEFAULT_RTC rtc_port: 0x70
+
+#define DO_EV4_MMU							\
+	max_asn:			EV4_MAX_ASN,			\
+	mv_switch_mm:			ev4_switch_mm,			\
+	mv_activate_mm:			ev4_activate_mm,		\
+	mv_flush_tlb_current:		ev4_flush_tlb_current,		\
+	mv_flush_tlb_other:		ev4_flush_tlb_other,		\
+	mv_flush_tlb_current_page:	ev4_flush_tlb_current_page
+
+#define DO_EV5_MMU							\
+	max_asn:			EV5_MAX_ASN,			\
+	mv_switch_mm:			ev5_switch_mm,			\
+	mv_activate_mm:			ev5_activate_mm,		\
+	mv_flush_tlb_current:		ev5_flush_tlb_current,		\
+	mv_flush_tlb_other:		ev5_flush_tlb_other,		\
+	mv_flush_tlb_current_page:	ev5_flush_tlb_current_page
+
+#define DO_EV6_MMU							\
+	max_asn:			EV6_MAX_ASN,			\
+	mv_switch_mm:			ev5_switch_mm,			\
+	mv_activate_mm:			ev5_activate_mm,		\
+	mv_flush_tlb_current:		ev5_flush_tlb_current,		\
+	mv_flush_tlb_other:		ev5_flush_tlb_other,		\
+	mv_flush_tlb_current_page:	ev5_flush_tlb_current_page
+
+#define IO_LITE(UP,low)							\
+	hae_register:		(unsigned long *) CAT(UP,_HAE_ADDRESS),	\
+	iack_sc:		CAT(UP,_IACK_SC),			\
+	mv_inb:			CAT(low,_inb),				\
+	mv_inw:			CAT(low,_inw),				\
+	mv_inl:			CAT(low,_inl),				\
+	mv_outb:		CAT(low,_outb),				\
+	mv_outw:		CAT(low,_outw),				\
+	mv_outl:		CAT(low,_outl),				\
+	mv_readb:		CAT(low,_readb),			\
+	mv_readw:		CAT(low,_readw),			\
+	mv_readl:		CAT(low,_readl),			\
+	mv_readq:		CAT(low,_readq),			\
+	mv_writeb:		CAT(low,_writeb),			\
+	mv_writew:		CAT(low,_writew),			\
+	mv_writel:		CAT(low,_writel),			\
+	mv_writeq:		CAT(low,_writeq),			\
+	mv_ioremap:		CAT(low,_ioremap),			\
+	mv_is_ioaddr:		CAT(low,_is_ioaddr)
+
+#define IO(UP,low)							\
+	IO_LITE(UP,low),						\
+	pci_ops:		&CAT(low,_pci_ops)
+
+/* Any assembler that can generate a GENERIC kernel can generate BWX
+   instructions.  So always use them for PYXIS I/O.  */
+
+#define DO_APECS_IO	IO(APECS,apecs)
+#define DO_CIA_IO	IO(CIA,cia)
+#define DO_LCA_IO	IO(LCA,lca)
+#define DO_MCPCIA_IO	IO(MCPCIA,mcpcia)
+#define DO_PYXIS_IO	IO(PYXIS,pyxis)
+#define DO_POLARIS_IO	IO(POLARIS,polaris)
+#define DO_T2_IO	IO(T2,t2)
+#define DO_TSUNAMI_IO	IO(TSUNAMI,tsunami)
+
+#define BUS(which)					\
+	mv_virt_to_bus:	CAT(which,_virt_to_bus),	\
+	mv_bus_to_virt:	CAT(which,_bus_to_virt)
+
+#define DO_APECS_BUS	BUS(apecs)
+#define DO_CIA_BUS	BUS(cia)
+#define DO_LCA_BUS	BUS(lca)
+#define DO_MCPCIA_BUS	BUS(mcpcia)
+#define DO_PYXIS_BUS	BUS(pyxis)
+#define DO_POLARIS_BUS	BUS(polaris)
+#define DO_T2_BUS	BUS(t2)
+#define DO_TSUNAMI_BUS	BUS(tsunami)
+
+
+/*
+ * In a GENERIC kernel, we have lots of these vectors floating about,
+ * all but one of which we want to go away.  In a non-GENERIC kernel,
+ * we want only one, ever.
+ *
+ * Accomplish this in the GENERIC kernel by puting all of the vectors
+ * in the .init.data section where they'll go away.  We'll copy the
+ * one we want to the real alpha_mv vector in setup_arch.
+ *
+ * Accomplish this in a non-GENERIC kernel by ifdef'ing out all but
+ * one of the vectors, which will not reside in .init.data.  We then
+ * alias this one vector to alpha_mv, so no copy is needed.
+ *
+ * Upshot: set __initdata to nothing for non-GENERIC kernels.
+ */
+
+#ifdef CONFIG_ALPHA_GENERIC
+#define __initmv __initdata
+#define ALIAS_MV(x)
+#else
+#define __initmv
+
+/* GCC actually has a syntax for defining aliases, but is under some
+   delusion that you shouldn't be able to declare it extern somewhere
+   else beforehand.  Fine.  We'll do it ourselves.  */
+#if 0
+#define ALIAS_MV(system) \
+  struct alpha_machine_vector alpha_mv __attribute__((alias(#system "_mv")));
+#else
+#define ALIAS_MV(system) \
+  asm(".global alpha_mv\nalpha_mv = " #system "_mv");
+#endif
+#endif /* GENERIC */