ia64: remove support for machvecs

The only thing remaining of the machvecs is a few checks if we are
running on an SGI UV system.  Replace those with the existing
is_uv_system() check that has been rewritten to simply check the
OEM ID directly.

That leaves us with a generic kernel that is as fast as the previous
DIG/ZX1/UV kernels, but can support all hardware.  Support for UV
and the HP SBA IOMMU is now optional based on new config options.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-27-hch@lst.de
Signed-off-by: Tony Luck <tony.luck@intel.com>

13 files changed, 26 insertions, 176 deletions

diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index be6bf3e499a6..f886d4dc9d55 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -32,22 +32,6 @@ static inline bool acpi_has_cpu_in_madt(void)
 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 static inline void disable_acpi(void) { }
 
-#ifdef CONFIG_IA64_GENERIC
-const char *acpi_get_sysname (void);
-#else
-static inline const char *acpi_get_sysname (void)
-{
-# if defined (CONFIG_IA64_HP_ZX1)
-	return "hpzx1";
-# elif defined (CONFIG_IA64_SGI_UV)
-	return "uv";
-# elif defined (CONFIG_IA64_DIG)
-	return "dig";
-# else
-#	error Unknown platform.  Fix acpi.c.
-# endif
-}
-#endif
 int acpi_request_vector (u32 int_type);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
index 12808111a767..e6385c7bdeb0 100644
--- a/arch/ia64/include/asm/hw_irq.h
+++ b/arch/ia64/include/asm/hw_irq.h
@@ -12,7 +12,6 @@
 #include <linux/types.h>
 #include <linux/profile.h>
 
-#include <asm/machvec.h>
 #include <asm/ptrace.h>
 #include <asm/smp.h>
 
@@ -56,7 +55,7 @@ typedef u8 ia64_vector;
 extern int ia64_first_device_vector;
 extern int ia64_last_device_vector;
 
-#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_DIG))
+#ifdef CONFIG_SMP
 /* Reserve the lower priority vector than device vectors for "move IRQ" IPI */
 #define IA64_IRQ_MOVE_VECTOR		0x30	/* "move IRQ" IPI */
 #define IA64_DEF_FIRST_DEVICE_VECTOR	0x31
@@ -127,7 +126,7 @@ extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect)
 extern void ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action);
 extern void destroy_and_reserve_irq (unsigned int irq);
 
-#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
+#ifdef CONFIG_SMP
 extern int irq_prepare_move(int irq, int cpu);
 extern void irq_complete_move(unsigned int irq);
 #else
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index edd5c262d360..54e70c21352a 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -71,7 +71,6 @@ extern unsigned int num_io_spaces;
 #define HAVE_ARCH_PIO_SIZE
 
 #include <asm/intrinsics.h>
-#include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm-generic/iomap.h>
 
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
index 7429a72f3f92..679854fbdfc5 100644
--- a/arch/ia64/include/asm/iommu.h
+++ b/arch/ia64/include/asm/iommu.h
@@ -15,6 +15,5 @@ extern int iommu_detected;
 #define no_iommu		(1)
 #define iommu_detected		(0)
 #endif
-extern void machvec_init(const char *name);
 
 #endif
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
deleted file mode 100644
index b22d0499b58c..000000000000
--- a/arch/ia64/include/asm/machvec.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Machine vector for IA-64.
- *
- * Copyright (C) 1999 Silicon Graphics, Inc.
- * Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
- * Copyright (C) Vijay Chander <vijay@engr.sgi.com>
- * Copyright (C) 1999-2001, 2003-2004 Hewlett-Packard Co.
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-#ifndef _ASM_IA64_MACHVEC_H
-#define _ASM_IA64_MACHVEC_H
-
-#include <linux/types.h>
-
-struct device;
-
-typedef void ia64_mv_setup_t (char **);
-
-extern void machvec_setup (char **);
-
-# if defined (CONFIG_IA64_DIG)
-#  include <asm/machvec_dig.h>
-# elif defined (CONFIG_IA64_HP_ZX1)
-#  include <asm/machvec_hpzx1.h>
-# elif defined (CONFIG_IA64_SGI_UV)
-#  include <asm/machvec_uv.h>
-# elif defined (CONFIG_IA64_GENERIC)
-
-# ifdef MACHVEC_PLATFORM_HEADER
-#  include MACHVEC_PLATFORM_HEADER
-# else
-#  define ia64_platform_name	ia64_mv.name
-#  define platform_setup	ia64_mv.setup
-# endif
-
-/* __attribute__((__aligned__(16))) is required to make size of the
- * structure multiple of 16 bytes.
- * This will fillup the holes created because of section 3.3.1 in
- * Software Conventions guide.
- */
-struct ia64_machine_vector {
-	const char *name;
-	ia64_mv_setup_t *setup;
-} __attribute__((__aligned__(16))); /* align attrib? see above comment */
-
-#define MACHVEC_INIT(name)			\
-{						\
-	#name,					\
-	platform_setup,				\
-}
-
-extern struct ia64_machine_vector ia64_mv;
-extern void machvec_init (const char *name);
-extern void machvec_init_from_cmdline(const char *cmdline);
-
-# else
-#  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
-# endif /* CONFIG_IA64_GENERIC */
-
-/*
- * Define default versions so we can extend machvec for new platforms without having
- * to update the machvec files for all existing platforms.
- */
-#ifndef platform_setup
-# define platform_setup			machvec_setup
-#endif
-
-#endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_dig.h b/arch/ia64/include/asm/machvec_dig.h
deleted file mode 100644
index bc230f69faeb..000000000000
--- a/arch/ia64/include/asm/machvec_dig.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_DIG_h
-#define _ASM_IA64_MACHVEC_DIG_h
-
-extern ia64_mv_setup_t dig_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name	"dig"
-#define platform_setup		dig_setup
-
-#endif /* _ASM_IA64_MACHVEC_DIG_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1.h b/arch/ia64/include/asm/machvec_hpzx1.h
deleted file mode 100644
index 7d37998ffdbf..000000000000
--- a/arch/ia64/include/asm/machvec_hpzx1.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_HPZX1_h
-#define _ASM_IA64_MACHVEC_HPZX1_h
-
-extern ia64_mv_setup_t			dig_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name			"hpzx1"
-#define platform_setup				dig_setup
-
-#endif /* _ASM_IA64_MACHVEC_HPZX1_h */
diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h
deleted file mode 100644
index 7a82e3ea0aff..000000000000
--- a/arch/ia64/include/asm/machvec_init.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <asm/iommu.h>
-#include <asm/machvec.h>
-
-#define MACHVEC_HELPER(name)									\
- struct ia64_machine_vector machvec_##name __attribute__ ((unused, __section__ (".machvec")))	\
-	= MACHVEC_INIT(name);
-
-#define MACHVEC_DEFINE(name)	MACHVEC_HELPER(name)
-
-MACHVEC_DEFINE(MACHVEC_PLATFORM_NAME)
diff --git a/arch/ia64/include/asm/machvec_uv.h b/arch/ia64/include/asm/machvec_uv.h
deleted file mode 100644
index 2c50853f35ac..000000000000
--- a/arch/ia64/include/asm/machvec_uv.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * SGI UV Core Functions
- *
- * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifndef _ASM_IA64_MACHVEC_UV_H
-#define _ASM_IA64_MACHVEC_UV_H
-
-extern ia64_mv_setup_t uv_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name		"uv"
-#define platform_setup			uv_setup
-
-#endif /* _ASM_IA64_MACHVEC_UV_H */
diff --git a/arch/ia64/include/asm/mmzone.h b/arch/ia64/include/asm/mmzone.h
index 0ceca5f9449c..767201f66c93 100644
--- a/arch/ia64/include/asm/mmzone.h
+++ b/arch/ia64/include/asm/mmzone.h
@@ -27,16 +27,9 @@ static inline int pfn_to_nid(unsigned long pfn)
 		return nid;
 }
 
-#ifdef CONFIG_IA64_DIG /* DIG systems are small */
-# define MAX_PHYSNODE_ID	8
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 8)
-#else
-# define MAX_PHYSNODE_ID	2048
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 4)
-#endif
-
-#else /* CONFIG_NUMA */
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 4)
+#define MAX_PHYSNODE_ID		2048
 #endif /* CONFIG_NUMA */
 
+#define NR_NODE_MEMBLKS		(MAX_NUMNODES * 4)
+
 #endif /* _ASM_IA64_MMZONE_H */
diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h
index c91ef98ed6bf..95a2ec37400f 100644
--- a/arch/ia64/include/asm/processor.h
+++ b/arch/ia64/include/asm/processor.h
@@ -679,8 +679,6 @@ enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
 
 void default_idle(void);
 
-#define ia64_platform_is(x) (strcmp(x, ia64_platform_name) == 0)
-
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _ASM_IA64_PROCESSOR_H */
diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h
index 86ec034ba499..f1f257d632b3 100644
--- a/arch/ia64/include/asm/tlb.h
+++ b/arch/ia64/include/asm/tlb.h
@@ -45,7 +45,6 @@
 #include <asm/pgalloc.h>
 #include <asm/processor.h>
 #include <asm/tlbflush.h>
-#include <asm/machvec.h>
 
 #include <asm-generic/tlb.h>
 
diff --git a/arch/ia64/include/asm/uv/uv.h b/arch/ia64/include/asm/uv/uv.h
index 502cf1c56369..48d4526bf4cd 100644
--- a/arch/ia64/include/asm/uv/uv.h
+++ b/arch/ia64/include/asm/uv/uv.h
@@ -2,10 +2,29 @@
 #ifndef _ASM_IA64_UV_UV_H
 #define _ASM_IA64_UV_UV_H
 
+#ifdef CONFIG_IA64_SGI_UV
+extern bool ia64_is_uv;
+
+static inline int is_uv_system(void)
+{
+	return ia64_is_uv;
+}
+
+void __init uv_probe_system_type(void);
+void __init uv_setup(char **cmdline_p);
+#else /* CONFIG_IA64_SGI_UV */
 static inline int is_uv_system(void)
 {
-	/* temporary support for running on hardware simulator */
-	return ia64_platform_is("uv");
+	return false;
+}
+
+static inline void __init uv_probe_system_type(void)
+{
+}
+
+static inline void __init uv_setup(char **cmdline_p)
+{
 }
+#endif /* CONFIG_IA64_SGI_UV */
 
 #endif	/* _ASM_IA64_UV_UV_H */