From f7bc6e42bf12487182fc442a08eca25d968dc543 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 13 Aug 2019 09:25:00 +0200 Subject: drivers: remove the SGI SN2 IOC4 base support The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS systems. This removes the base driver, which while not having an SN2 Kconfig dependency was only for sub-drivers that had one. Signed-off-by: Christoph Hellwig Link: https://lkml.kernel.org/r/20190813072514.23299-15-hch@lst.de Signed-off-by: Tony Luck --- Documentation/driver-api/sgi-ioc4.rst | 49 ----------------------------------- 1 file changed, 49 deletions(-) delete mode 100644 Documentation/driver-api/sgi-ioc4.rst (limited to 'Documentation') diff --git a/Documentation/driver-api/sgi-ioc4.rst b/Documentation/driver-api/sgi-ioc4.rst deleted file mode 100644 index 72709222d3c0..000000000000 --- a/Documentation/driver-api/sgi-ioc4.rst +++ /dev/null @@ -1,49 +0,0 @@ -==================================== -SGI IOC4 PCI (multi function) device -==================================== - -The SGI IOC4 PCI device is a bit of a strange beast, so some notes on -it are in order. - -First, even though the IOC4 performs multiple functions, such as an -IDE controller, a serial controller, a PS/2 keyboard/mouse controller, -and an external interrupt mechanism, it's not implemented as a -multifunction device. The consequence of this from a software -standpoint is that all these functions share a single IRQ, and -they can't all register to own the same PCI device ID. To make -matters a bit worse, some of the register blocks (and even registers -themselves) present in IOC4 are mixed-purpose between these several -functions, meaning that there's no clear "owning" device driver. - -The solution is to organize the IOC4 driver into several independent -drivers, "ioc4", "sgiioc4", and "ioc4_serial". Note that there is no -PS/2 controller driver as this functionality has never been wired up -on a shipping IO card. - -ioc4 -==== -This is the core (or shim) driver for IOC4. It is responsible for -initializing the basic functionality of the chip, and allocating -the PCI resources that are shared between the IOC4 functions. - -This driver also provides registration functions that the other -IOC4 drivers can call to make their presence known. Each driver -needs to provide a probe and remove function, which are invoked -by the core driver at appropriate times. The interface of these -IOC4 function probe and remove operations isn't precisely the same -as PCI device probe and remove operations, but is logically the -same operation. - -sgiioc4 -======= -This is the IDE driver for IOC4. Its name isn't very descriptive -simply for historical reasons (it used to be the only IOC4 driver -component). There's not much to say about it other than it hooks -up to the ioc4 driver via the appropriate registration, probe, and -remove functions. - -ioc4_serial -=========== -This is the serial driver for IOC4. There's not much to say about it -other than it hooks up to the ioc4 driver via the appropriate registration, -probe, and remove functions. -- cgit v1.2.3-59-g8ed1b From df43acac8e32e2ee51a1e9376993c5ac18598d92 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 13 Aug 2019 09:25:06 +0200 Subject: ia64: remove the zx1 swiotlb machvec The aim of this machvec is to support devices with < 32-bit dma masks. But given that ia64 only has a ZONE_DMA32 and not a ZONE_DMA that isn't supported by swiotlb either. Signed-off-by: Christoph Hellwig Link: https://lkml.kernel.org/r/20190813072514.23299-21-hch@lst.de Signed-off-by: Tony Luck --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/ia64/Kconfig | 13 +----- arch/ia64/Kconfig.debug | 2 +- arch/ia64/Makefile | 2 - arch/ia64/hp/common/Makefile | 2 - arch/ia64/hp/common/hwsw_iommu.c | 60 ------------------------- arch/ia64/hp/common/sba_iommu.c | 15 +------ arch/ia64/hp/zx1/Makefile | 2 +- arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c | 3 -- arch/ia64/include/asm/acpi.h | 2 - arch/ia64/include/asm/dma-mapping.h | 8 +--- arch/ia64/include/asm/machvec.h | 15 ------- arch/ia64/include/asm/machvec_hpzx1_swiotlb.h | 20 --------- arch/ia64/kernel/dma-mapping.c | 6 --- drivers/char/agp/Kconfig | 2 +- 15 files changed, 7 insertions(+), 147 deletions(-) delete mode 100644 arch/ia64/hp/common/hwsw_iommu.c delete mode 100644 arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c delete mode 100644 arch/ia64/include/asm/machvec_hpzx1_swiotlb.h (limited to 'Documentation') diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 7ccd158b3894..4ace5af0e9a7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2373,7 +2373,7 @@ machvec= [IA-64] Force the use of a particular machine-vector (machvec) in a generic kernel. - Example: machvec=hpzx1_swiotlb + Example: machvec=hpzx1 machtype= [Loongson] Share the same kernel image file between different yeeloong laptop. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 63db7a5378ac..a42ab41ee8ab 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -138,7 +138,6 @@ config IA64_GENERIC DIG-compliant For DIG ("Developer's Interface Guide") compliant systems DIG+Intel+IOMMU For DIG systems with Intel IOMMU HP-zx1/sx1000 For HP systems - HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. SGI-UV For SGI UV systems If you don't know what to do, choose "generic". @@ -158,16 +157,6 @@ config IA64_HP_ZX1 Build a kernel that runs on HP zx1 and sx1000 systems. This adds support for the HP I/O MMU. -config IA64_HP_ZX1_SWIOTLB - bool "HP-zx1/sx1000 with software I/O TLB" - select SWIOTLB - help - Build a kernel that runs on HP zx1 and sx1000 systems even when they - have broken PCI devices which cannot DMA to full 32 bits. Apart - from support for the HP I/O MMU, this includes support for the software - I/O TLB, which allows supporting the broken devices at the expense of - wasting some kernel memory (about 2MB by default). - config IA64_SGI_UV bool "SGI-UV" select NUMA @@ -350,7 +339,7 @@ config ARCH_SPARSEMEM_ENABLE select SPARSEMEM_VMEMMAP_ENABLE config ARCH_DISCONTIGMEM_DEFAULT - def_bool y if (IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) + def_bool y if (IA64_GENERIC || IA64_HP_ZX1) depends on ARCH_DISCONTIGMEM_ENABLE config NUMA diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug index 793a613c54ab..abf8d04ab6ab 100644 --- a/arch/ia64/Kconfig.debug +++ b/arch/ia64/Kconfig.debug @@ -14,7 +14,7 @@ config IA64_GRANULE_16MB config IA64_GRANULE_64MB bool "64MB" - depends on !(IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) + depends on !(IA64_GENERIC || IA64_HP_ZX1) endchoice diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index c06802799659..0b3647efde5d 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -54,12 +54,10 @@ core-$(CONFIG_IA64_DIG) += arch/ia64/dig/ core-$(CONFIG_IA64_DIG_VTD) += arch/ia64/dig/ core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/ core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/ -core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/ core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/ drivers-y += arch/ia64/pci/ drivers-$(CONFIG_IA64_HP_ZX1) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ -drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/ drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ diff --git a/arch/ia64/hp/common/Makefile b/arch/ia64/hp/common/Makefile index 6026308f9a62..47c8f6ecb6f4 100644 --- a/arch/ia64/hp/common/Makefile +++ b/arch/ia64/hp/common/Makefile @@ -7,6 +7,4 @@ # obj-y := sba_iommu.o -obj-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += hwsw_iommu.o -obj-$(CONFIG_IA64_GENERIC) += hwsw_iommu.o obj-$(CONFIG_IA64_HP_AML_NFW) += aml_nfw.o diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c deleted file mode 100644 index 8840ed97712f..000000000000 --- a/arch/ia64/hp/common/hwsw_iommu.c +++ /dev/null @@ -1,60 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (c) 2004 Hewlett-Packard Development Company, L.P. - * Contributed by David Mosberger-Tang - * - * This is a pseudo I/O MMU which dispatches to the hardware I/O MMU - * whenever possible. We assume that the hardware I/O MMU requires - * full 32-bit addressability, as is the case, e.g., for HP zx1-based - * systems (there, the I/O MMU window is mapped at 3-4GB). If a - * device doesn't provide full 32-bit addressability, we fall back on - * the sw I/O TLB. This is good enough to let us support broken - * hardware such as soundcards which have a DMA engine that can - * address only 28 bits. - */ - -#include -#include -#include -#include -#include - -extern const struct dma_map_ops sba_dma_ops; - -/* swiotlb declarations & definitions: */ -extern int swiotlb_late_init_with_default_size (size_t size); - -/* - * Note: we need to make the determination of whether or not to use - * the sw I/O TLB based purely on the device structure. Anything else - * would be unreliable or would be too intrusive. - */ -static inline int use_swiotlb(struct device *dev) -{ - return dev && dev->dma_mask && - !sba_dma_ops.dma_supported(dev, *dev->dma_mask); -} - -const struct dma_map_ops *hwsw_dma_get_ops(struct device *dev) -{ - if (use_swiotlb(dev)) - return NULL; - return &sba_dma_ops; -} -EXPORT_SYMBOL(hwsw_dma_get_ops); - -void __init -hwsw_init (void) -{ - /* default to a smallish 2MB sw I/O TLB */ - if (swiotlb_late_init_with_default_size (2 * (1<<20)) != 0) { -#ifdef CONFIG_IA64_GENERIC - /* Better to have normal DMA than panic */ - printk(KERN_WARNING "%s: Failed to initialize software I/O TLB," - " reverting to hpzx1 platform vector\n", __func__); - machvec_init("hpzx1"); -#else - panic("Unable to initialize software I/O TLB services"); -#endif - } -} diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c index 18321ce8bfa0..215fa688b729 100644 --- a/arch/ia64/hp/common/sba_iommu.c +++ b/arch/ia64/hp/common/sba_iommu.c @@ -2059,7 +2059,7 @@ arch_initcall(acpi_sba_ioc_init_acpi); static int __init sba_init(void) { - if (!ia64_platform_is("hpzx1") && !ia64_platform_is("hpzx1_swiotlb")) + if (!ia64_platform_is("hpzx1")) return 0; #if defined(CONFIG_IA64_GENERIC) @@ -2102,19 +2102,6 @@ sba_init(void) return 0; } -#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_HP_ZX1_SWIOTLB) - /* - * hpzx1_swiotlb needs to have a fairly small swiotlb bounce - * buffer setup to support devices with smaller DMA masks than - * sba_iommu can handle. - */ - if (ia64_platform_is("hpzx1_swiotlb")) { - extern void hwsw_init(void); - - hwsw_init(); - } -#endif - { struct pci_bus *b = NULL; while ((b = pci_find_next_bus(b)) != NULL) diff --git a/arch/ia64/hp/zx1/Makefile b/arch/ia64/hp/zx1/Makefile index 46b37d820b59..bea44b4ed173 100644 --- a/arch/ia64/hp/zx1/Makefile +++ b/arch/ia64/hp/zx1/Makefile @@ -6,4 +6,4 @@ # Copyright (C) Alex Williamson (alex_williamson@hp.com) # -obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o hpzx1_swiotlb_machvec.o +obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o diff --git a/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c b/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c deleted file mode 100644 index 4392a96b3c58..000000000000 --- a/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c +++ /dev/null @@ -1,3 +0,0 @@ -#define MACHVEC_PLATFORM_NAME hpzx1_swiotlb -#define MACHVEC_PLATFORM_HEADER -#include diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h index 01c1c269aa13..9e563df73038 100644 --- a/arch/ia64/include/asm/acpi.h +++ b/arch/ia64/include/asm/acpi.h @@ -39,8 +39,6 @@ static inline const char *acpi_get_sysname (void) { # if defined (CONFIG_IA64_HP_ZX1) return "hpzx1"; -# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) - return "hpzx1_swiotlb"; # elif defined (CONFIG_IA64_SGI_UV) return "uv"; # elif defined (CONFIG_IA64_DIG) diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index f7ec71e4001e..a5d9d788eede 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -6,17 +6,11 @@ * Copyright (C) 2003-2004 Hewlett-Packard Co * David Mosberger-Tang */ -#include -#include -#include - extern const struct dma_map_ops *dma_ops; -extern struct ia64_machine_vector ia64_mv; -extern void set_iommu_machvec(void); static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { - return platform_dma_get_ops(NULL); + return dma_ops; } #endif /* _ASM_IA64_DMA_MAPPING_H */ diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h index 5a9a8af79308..fa867e980d87 100644 --- a/arch/ia64/include/asm/machvec.h +++ b/arch/ia64/include/asm/machvec.h @@ -17,12 +17,6 @@ struct device; typedef void ia64_mv_setup_t (char **); typedef void ia64_mv_dma_init (void); -typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *); - -static inline void -machvec_noop (void) -{ -} extern void machvec_setup (char **); @@ -32,8 +26,6 @@ extern void machvec_setup (char **); # include # elif defined (CONFIG_IA64_HP_ZX1) # include -# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) -# include # elif defined (CONFIG_IA64_SGI_UV) # include # elif defined (CONFIG_IA64_GENERIC) @@ -44,7 +36,6 @@ extern void machvec_setup (char **); # define ia64_platform_name ia64_mv.name # define platform_setup ia64_mv.setup # define platform_dma_init ia64_mv.dma_init -# define platform_dma_get_ops ia64_mv.dma_get_ops # endif /* __attribute__((__aligned__(16))) is required to make size of the @@ -56,7 +47,6 @@ struct ia64_machine_vector { const char *name; ia64_mv_setup_t *setup; ia64_mv_dma_init *dma_init; - ia64_mv_dma_get_ops *dma_get_ops; } __attribute__((__aligned__(16))); /* align attrib? see above comment */ #define MACHVEC_INIT(name) \ @@ -64,7 +54,6 @@ struct ia64_machine_vector { #name, \ platform_setup, \ platform_dma_init, \ - platform_dma_get_ops, \ } extern struct ia64_machine_vector ia64_mv; @@ -76,7 +65,6 @@ extern void machvec_init_from_cmdline(const char *cmdline); # endif /* CONFIG_IA64_GENERIC */ extern void swiotlb_dma_init(void); -extern const struct dma_map_ops *dma_get_ops(struct device *); /* * Define default versions so we can extend machvec for new platforms without having @@ -88,8 +76,5 @@ extern const struct dma_map_ops *dma_get_ops(struct device *); #ifndef platform_dma_init # define platform_dma_init swiotlb_dma_init #endif -#ifndef platform_dma_get_ops -# define platform_dma_get_ops dma_get_ops -#endif #endif /* _ASM_IA64_MACHVEC_H */ diff --git a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h deleted file mode 100644 index 5aec6a008c61..000000000000 --- a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h -#define _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h - -extern ia64_mv_setup_t dig_setup; -extern ia64_mv_dma_get_ops hwsw_dma_get_ops; - -/* - * 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_swiotlb" -#define platform_setup dig_setup -#define platform_dma_init machvec_noop -#define platform_dma_get_ops hwsw_dma_get_ops - -#endif /* _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h */ diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c index ad7d9963de34..4be5ee04ccfa 100644 --- a/arch/ia64/kernel/dma-mapping.c +++ b/arch/ia64/kernel/dma-mapping.c @@ -9,12 +9,6 @@ int iommu_detected __read_mostly; const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); -const struct dma_map_ops *dma_get_ops(struct device *dev) -{ - return dma_ops; -} -EXPORT_SYMBOL(dma_get_ops); - #ifdef CONFIG_SWIOTLB void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig index be50d7a93f4c..42d45e97c2ae 100644 --- a/drivers/char/agp/Kconfig +++ b/drivers/char/agp/Kconfig @@ -118,7 +118,7 @@ config AGP_I460 config AGP_HP_ZX1 tristate "HP ZX1 chipset AGP support" - depends on AGP && (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC) + depends on AGP && (IA64_HP_ZX1 || IA64_GENERIC) help This option gives you AGP GART support for the HP ZX1 chipset for IA64 processors. -- cgit v1.2.3-59-g8ed1b