From 3369ddb62a42e8392562c86d63811ba8b0167a58 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 15 Jun 2018 13:08:38 +0200
Subject: MIPS: make the default mips dma implementation optional
Octeon and loonson64 already don't use it at all, and we're going to
migrate more plaforms away from it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/19536/
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-mips@linux-mips.org
---
arch/mips/Kconfig | 40 +++++++++++++++++++++++++++++++++++++
arch/mips/include/asm/dma-mapping.h | 4 +++-
arch/mips/jazz/Kconfig | 3 +++
arch/mips/loongson32/Kconfig | 2 ++
arch/mips/loongson64/Kconfig | 2 ++
arch/mips/mm/Makefile | 3 ++-
arch/mips/pic32/Kconfig | 1 +
arch/mips/txx9/Kconfig | 1 +
arch/mips/vr41xx/Kconfig | 5 +++++
9 files changed, 59 insertions(+), 2 deletions(-)
(limited to 'arch/mips')
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index a7ecd785f8b9..7c539a39c43e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -77,6 +77,9 @@ config MIPS
select SYSCTL_EXCEPTION_TRACE
select VIRT_TO_BUS
+config MIPS_DMA_DEFAULT
+ bool
+
menu "Machine selection"
choice
@@ -98,6 +101,7 @@ config MIPS_GENERIC
select IRQ_MIPS_CPU
select LIBFDT
select MIPS_CPU_SCACHE
+ select MIPS_DMA_DEFAULT
select MIPS_GIC
select MIPS_L1_CACHE_SHIFT_7
select NO_EXCEPT_FILL
@@ -141,6 +145,7 @@ config MIPS_ALCHEMY
select CEVT_R4K
select CSRC_R4K
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
@@ -156,6 +161,7 @@ config AR7
select CEVT_R4K
select CSRC_R4K
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select NO_EXCEPT_FILL
select SWAP_IO_SPACE
select SYS_HAS_CPU_MIPS32_R1
@@ -178,6 +184,7 @@ config ATH25
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
select IRQ_DOMAIN
+ select MIPS_DMA_DEFAULT
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_32BIT_KERNEL
@@ -197,6 +204,7 @@ config ATH79
select COMMON_CLK
select CLKDEV_LOOKUP
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select MIPS_MACHINE
select SYS_HAS_CPU_MIPS32_R2
select SYS_HAS_EARLY_PRINTK
@@ -223,6 +231,7 @@ config BMIPS_GENERIC
select BCM7120_L2_IRQ
select BRCMSTB_L2_IRQ
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select DMA_NONCOHERENT
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -253,6 +262,7 @@ config BCM47XX
select HW_HAS_PCI
select IRQ_MIPS_CPU
select SYS_HAS_CPU_MIPS32_R1
+ select MIPS_DMA_DEFAULT
select NO_EXCEPT_FILL
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -276,6 +286,7 @@ config BCM63XX
select SYNC_R4K
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_HAS_EARLY_PRINTK
@@ -298,6 +309,7 @@ config MIPS_COBALT
select I8259
select IRQ_MIPS_CPU
select IRQ_GT641XX
+ select MIPS_DMA_DEFAULT
select PCI_GT64XXX_PCI0
select PCI
select SYS_HAS_CPU_NEVADA
@@ -318,6 +330,7 @@ config MACH_DECSTATION
select CPU_R4000_WORKAROUNDS if 64BIT
select CPU_R4400_WORKAROUNDS if 64BIT
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select NO_IOPORT_MAP
select IRQ_MIPS_CPU
select SYS_HAS_CPU_R3000
@@ -377,6 +390,7 @@ config MACH_INGENIC
select SYS_SUPPORTS_ZBOOT_UART16550
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select PINCTRL
select GPIOLIB
select COMMON_CLK
@@ -391,6 +405,7 @@ config LANTIQ
select IRQ_MIPS_CPU
select CEVT_R4K
select CSRC_R4K
+ select MIPS_DMA_DEFAULT
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
select SYS_SUPPORTS_BIG_ENDIAN
@@ -418,6 +433,7 @@ config LASAT
select SYS_HAS_EARLY_PRINTK
select HW_HAS_PCI
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select PCI_GT64XXX_PCI0
select MIPS_NILE4
select R5000_CPU_SCACHE
@@ -464,6 +480,7 @@ config MACH_PISTACHIO
select LIBFDT
select MFD_SYSCON
select MIPS_CPU_SCACHE
+ select MIPS_DMA_DEFAULT
select MIPS_GIC
select PINCTRL
select REGULATOR
@@ -496,6 +513,7 @@ config MIPS_MALTA
select GENERIC_ISA_DMA
select HAVE_PCSPKR_PLATFORM
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select MIPS_GIC
select HW_HAS_PCI
select I8253
@@ -552,6 +570,7 @@ config NEC_MARKEINS
bool "NEC EMMA2RH Mark-eins board"
select SOC_EMMA2RH
select HW_HAS_PCI
+ select MIPS_DMA_DEFAULT
help
This enables support for the NEC Electronics Mark-eins boards.
@@ -565,12 +584,14 @@ config MACH_VR41XX
config NXP_STB220
bool "NXP STB220 board"
+ select MIPS_DMA_DEFAULT
select SOC_PNX833X
help
Support for NXP Semiconductors STB220 Development Board.
config NXP_STB225
bool "NXP 225 board"
+ select MIPS_DMA_DEFAULT
select SOC_PNX833X
select SOC_PNX8335
help
@@ -590,6 +611,7 @@ config PMC_MSP
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_MIPS16
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select SERIAL_8250
select SERIAL_8250_CONSOLE
select USB_EHCI_BIG_ENDIAN_MMIO
@@ -607,6 +629,7 @@ config RALINK
select BOOT_RAW
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select USE_OF
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
@@ -633,6 +656,7 @@ config SGI_IP22
select I8259
select IP22_CPU_SCACHE
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select SGI_HAS_I8042
select SGI_HAS_INDYDOG
@@ -666,6 +690,7 @@ config SGI_IP27
select FW_ARC64
select BOOT_ELF64
select DEFAULT_SGI_PARTITION
+ select MIPS_DMA_DEFAULT
select SYS_HAS_EARLY_PRINTK
select HW_HAS_PCI
select NR_CPUS_DEFAULT_64
@@ -692,6 +717,7 @@ config SGI_IP28
select DMA_NONCOHERENT
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select HW_HAS_EISA
select I8253
select I8259
@@ -728,6 +754,7 @@ config SGI_IP32
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select R5000_CPU_SCACHE
select RM7000_CPU_SCACHE
select SYS_HAS_CPU_R5000
@@ -742,6 +769,7 @@ config SGI_IP32
config SIBYTE_CRHINE
bool "Sibyte BCM91120C-CRhine"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select SIBYTE_BCM1120
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -751,6 +779,7 @@ config SIBYTE_CRHINE
config SIBYTE_CARMEL
bool "Sibyte BCM91120x-Carmel"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select SIBYTE_BCM1120
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -760,6 +789,7 @@ config SIBYTE_CARMEL
config SIBYTE_CRHONE
bool "Sibyte BCM91125C-CRhone"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select SIBYTE_BCM1125
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -770,6 +800,7 @@ config SIBYTE_CRHONE
config SIBYTE_RHONE
bool "Sibyte BCM91125E-Rhone"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select SIBYTE_BCM1125H
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -780,6 +811,7 @@ config SIBYTE_SWARM
bool "Sibyte BCM91250A-SWARM"
select BOOT_ELF32
select HAVE_PATA_PLATFORM
+ select MIPS_DMA_DEFAULT
select SIBYTE_SB1250
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -792,6 +824,7 @@ config SIBYTE_LITTLESUR
bool "Sibyte BCM91250C2-LittleSur"
select BOOT_ELF32
select HAVE_PATA_PLATFORM
+ select MIPS_DMA_DEFAULT
select SIBYTE_SB1250
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -802,6 +835,7 @@ config SIBYTE_LITTLESUR
config SIBYTE_SENTOSA
bool "Sibyte BCM91250E-Sentosa"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select SIBYTE_SB1250
select SWAP_IO_SPACE
select SYS_HAS_CPU_SB1
@@ -811,6 +845,7 @@ config SIBYTE_SENTOSA
config SIBYTE_BIGSUR
bool "Sibyte BCM91480B-BigSur"
select BOOT_ELF32
+ select MIPS_DMA_DEFAULT
select NR_CPUS_DEFAULT_4
select SIBYTE_BCM1x80
select SWAP_IO_SPACE
@@ -841,6 +876,7 @@ config SNI_RM
select I8253
select I8259
select ISA
+ select MIPS_DMA_DEFAULT
select SWAP_IO_SPACE if CPU_BIG_ENDIAN
select SYS_HAS_CPU_R4X00
select SYS_HAS_CPU_R5000
@@ -871,6 +907,7 @@ config MIKROTIK_RB532
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_MIPS_CPU
+ select MIPS_DMA_DEFAULT
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -929,6 +966,7 @@ config NLM_XLR_BOARD
select SYS_HAS_CPU_XLR
select SYS_SUPPORTS_SMP
select HW_HAS_PCI
+ select MIPS_DMA_DEFAULT
select SWAP_IO_SPACE
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
@@ -955,6 +993,7 @@ config NLM_XLP_BOARD
select SYS_HAS_CPU_XLP
select SYS_SUPPORTS_SMP
select HW_HAS_PCI
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select PHYS_ADDR_T_64BIT
@@ -980,6 +1019,7 @@ config MIPS_PARAVIRT
bool "Para-Virtualized guest system"
select CEVT_R4K
select CSRC_R4K
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index f24b052ec740..eaf3d9054104 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -17,8 +17,10 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
#ifdef CONFIG_SWIOTLB
return &mips_swiotlb_ops;
-#else
+#elif defined(CONFIG_MIPS_DMA_DEFAULT)
return &mips_default_dma_map_ops;
+#else
+ return NULL;
#endif
}
diff --git a/arch/mips/jazz/Kconfig b/arch/mips/jazz/Kconfig
index 06838f80a5d7..d3ae3e0356f6 100644
--- a/arch/mips/jazz/Kconfig
+++ b/arch/mips/jazz/Kconfig
@@ -3,6 +3,7 @@ config ACER_PICA_61
bool "Support for Acer PICA 1 chipset"
depends on MACH_JAZZ
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_LITTLE_ENDIAN
help
This is a machine with a R4400 133/150 MHz CPU. To compile a Linux
@@ -14,6 +15,7 @@ config MIPS_MAGNUM_4000
bool "Support for MIPS Magnum 4000"
depends on MACH_JAZZ
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_LITTLE_ENDIAN
help
@@ -26,6 +28,7 @@ config OLIVETTI_M700
bool "Support for Olivetti M700-10"
depends on MACH_JAZZ
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select SYS_SUPPORTS_LITTLE_ENDIAN
help
This is a machine with a R4000 100 MHz CPU. To compile a Linux
diff --git a/arch/mips/loongson32/Kconfig b/arch/mips/loongson32/Kconfig
index 462b126f45aa..7a69a6c0ce22 100644
--- a/arch/mips/loongson32/Kconfig
+++ b/arch/mips/loongson32/Kconfig
@@ -10,6 +10,7 @@ config LOONGSON1_LS1B
select CSRC_R4K if !MIPS_EXTERNAL_TIMER
select SYS_HAS_CPU_LOONGSON1B
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select BOOT_ELF32
select IRQ_MIPS_CPU
select SYS_SUPPORTS_32BIT_KERNEL
@@ -26,6 +27,7 @@ config LOONGSON1_LS1C
select CSRC_R4K if !MIPS_EXTERNAL_TIMER
select SYS_HAS_CPU_LOONGSON1C
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select BOOT_ELF32
select IRQ_MIPS_CPU
select SYS_SUPPORTS_32BIT_KERNEL
diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig
index c79e6a565572..dbd2a9f9f9a9 100644
--- a/arch/mips/loongson64/Kconfig
+++ b/arch/mips/loongson64/Kconfig
@@ -13,6 +13,7 @@ config LEMOTE_FULOONG2E
select CSRC_R4K
select SYS_HAS_CPU_LOONGSON2E
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select BOOT_ELF32
select BOARD_SCACHE
select HW_HAS_PCI
@@ -44,6 +45,7 @@ config LEMOTE_MACH2F
select CS5536
select CSRC_R4K if ! MIPS_EXTERNAL_TIMER
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select HAVE_CLK
select HW_HAS_PCI
diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile
index b87e4258fd78..038bfed34946 100644
--- a/arch/mips/mm/Makefile
+++ b/arch/mips/mm/Makefile
@@ -3,7 +3,7 @@
# Makefile for the Linux/MIPS-specific parts of the memory manager.
#
-obj-y += cache.o dma-default.o extable.o fault.o \
+obj-y += cache.o extable.o fault.o \
gup.o init.o mmap.o page.o page-funcs.o \
pgtable.o tlbex.o tlbex-fault.o tlb-funcs.o
@@ -17,6 +17,7 @@ obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o
obj-$(CONFIG_64BIT) += pgtable-64.o
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
+obj-$(CONFIG_MIPS_DMA_DEFAULT) += dma-default.o
obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o
obj-$(CONFIG_CPU_R4K_CACHE_TLB) += c-r4k.o cex-gen.o tlb-r4k.o
diff --git a/arch/mips/pic32/Kconfig b/arch/mips/pic32/Kconfig
index e284e89183cc..7feb7359b05b 100644
--- a/arch/mips/pic32/Kconfig
+++ b/arch/mips/pic32/Kconfig
@@ -11,6 +11,7 @@ config PIC32MZDA
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select SYS_HAS_CPU_MIPS32_R2
select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
diff --git a/arch/mips/txx9/Kconfig b/arch/mips/txx9/Kconfig
index d2509c93f0ee..9dfda3e90348 100644
--- a/arch/mips/txx9/Kconfig
+++ b/arch/mips/txx9/Kconfig
@@ -16,6 +16,7 @@ config MACH_TX49XX
config MACH_TXX9
bool
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select SWAP_IO_SPACE
select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
diff --git a/arch/mips/vr41xx/Kconfig b/arch/mips/vr41xx/Kconfig
index 992c988b83b0..cc69b2f663fa 100644
--- a/arch/mips/vr41xx/Kconfig
+++ b/arch/mips/vr41xx/Kconfig
@@ -9,6 +9,7 @@ config CASIO_E55
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select IRQ_MIPS_CPU
select ISA
select SYS_SUPPORTS_32BIT_KERNEL
@@ -19,6 +20,7 @@ config IBM_WORKPAD
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select IRQ_MIPS_CPU
select ISA
select SYS_SUPPORTS_32BIT_KERNEL
@@ -29,6 +31,7 @@ config TANBAC_TB022X
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select IRQ_MIPS_CPU
select HW_HAS_PCI
select SYS_SUPPORTS_32BIT_KERNEL
@@ -45,6 +48,7 @@ config VICTOR_MPC30X
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select IRQ_MIPS_CPU
select HW_HAS_PCI
select PCI_VR41XX
@@ -56,6 +60,7 @@ config ZAO_CAPCELLA
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select MIPS_DMA_DEFAULT
select IRQ_MIPS_CPU
select HW_HAS_PCI
select PCI_VR41XX
--
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