Subject: [PATCH] m68k: Atari ROM port ISA adapter support From: Michael Schmitz Atari ROM port ISA adapter support Signed-off-by: Michael Schmitz Signed-off-by: Roman Zippel Signed-off-by: Geert Uytterhoeven --- arch/m68k/Kconfig | 10 +++ arch/m68k/kernel/setup.c | 6 ++ include/asm-m68k/io.h | 137 ++++++++++++++++++++++++++++++++++++++++++++-- include/asm-m68k/raw_io.h | 116 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 265 insertions(+), 4 deletions(-) --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -153,6 +153,16 @@ config PCI your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or VESA. If you have PCI, say Y, otherwise N. +config ATARI_ROM_ISA + bool "Atari ROM port ISA adapter support" + depends on ATARI + help + This option enables support for the ROM port ISA adapter used to + operate ISA cards on Atari. Only 8 bit cards are supported, and + no interrupt lines are connected. + The only driver currently using this adapter is the EtherNEC + driver for RTL8019AS based NE2000 compatible network cards. + config MAC bool "Macintosh support" depends on !MMU_SUN3 --- a/arch/m68k/kernel/setup.c +++ b/arch/m68k/kernel/setup.c @@ -371,6 +371,12 @@ void __init setup_arch(char **cmdline_p) isa_sex = 1; } #endif +#ifdef CONFIG_ATARI_ROM_ISA + if (MACH_IS_ATARI) { + isa_type = ISA_TYPE_ENEC; + isa_sex = 0; + } +#endif #endif } --- a/include/asm-m68k/io.h +++ b/include/asm-m68k/io.h @@ -83,9 +83,26 @@ extern unsigned long gg2_isa_base; #endif #endif /* AMIGA_PCMCIA */ +#ifdef CONFIG_ATARI_ROM_ISA +#define enec_isa_read_base 0xfffa0000 +#define enec_isa_write_base 0xfffb0000 -#ifdef CONFIG_ISA +#define ENEC_ISA_IO_B(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x1F)<<9)) +#define ENEC_ISA_IO_W(ioaddr) (enec_isa_read_base+((((unsigned long)(ioaddr))&0x1F)<<9)) +#define ENEC_ISA_MEM_B(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x1F)<<9)) +#define ENEC_ISA_MEM_W(madr) (enec_isa_read_base+((((unsigned long)(madr))&0x1F)<<9)) + +#ifndef MULTI_ISA +#define MULTI_ISA 0 +#else +#undef MULTI_ISA +#define MULTI_ISA 1 +#endif +#endif /* ATARI */ + + +#if defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA) #if MULTI_ISA == 0 #undef MULTI_ISA @@ -94,6 +111,7 @@ extern unsigned long gg2_isa_base; #define ISA_TYPE_Q40 (1) #define ISA_TYPE_GG2 (2) #define ISA_TYPE_AG (3) +#define ISA_TYPE_ENEC (4) #if defined(CONFIG_Q40) && !defined(MULTI_ISA) #define ISA_TYPE ISA_TYPE_Q40 @@ -107,6 +125,10 @@ extern unsigned long gg2_isa_base; #define ISA_TYPE ISA_TYPE_GG2 #define ISA_SEX 0 #endif +#if defined(CONFIG_ATARI_ROM_ISA) && !defined(MULTI_ISA) +#define ISA_TYPE ISA_TYPE_ENEC +#define ISA_SEX 0 +#endif #ifdef MULTI_ISA extern int isa_type; @@ -134,6 +156,9 @@ static inline u8 __iomem *isa_itb(unsign #ifdef CONFIG_AMIGA_PCMCIA case ISA_TYPE_AG: return (u8 __iomem *)AG_ISA_IO_B(addr); #endif +#ifdef CONFIG_ATARI_ROM_ISA + case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_IO_B(addr); +#endif default: return NULL; /* avoid warnings, just in case */ } } @@ -150,6 +175,9 @@ static inline u16 __iomem *isa_itw(unsig #ifdef CONFIG_AMIGA_PCMCIA case ISA_TYPE_AG: return (u16 __iomem *)AG_ISA_IO_W(addr); #endif +#ifdef CONFIG_ATARI_ROM_ISA + case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_IO_W(addr); +#endif default: return NULL; /* avoid warnings, just in case */ } } @@ -176,6 +204,9 @@ static inline u8 __iomem *isa_mtb(unsign #ifdef CONFIG_AMIGA_PCMCIA case ISA_TYPE_AG: return (u8 __iomem *)addr; #endif +#ifdef CONFIG_ATARI_ROM_ISA + case ISA_TYPE_ENEC: return (u8 __iomem *)ENEC_ISA_MEM_B(addr); +#endif default: return NULL; /* avoid warnings, just in case */ } } @@ -192,6 +223,9 @@ static inline u16 __iomem *isa_mtw(unsig #ifdef CONFIG_AMIGA_PCMCIA case ISA_TYPE_AG: return (u16 __iomem *)addr; #endif +#ifdef CONFIG_ATARI_ROM_ISA + case ISA_TYPE_ENEC: return (u16 __iomem *)ENEC_ISA_MEM_W(addr); +#endif default: return NULL; /* avoid warnings, just in case */ } } @@ -213,6 +247,34 @@ static inline u16 __iomem *isa_mtw(unsig (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \ : out_le16(isa_mtw((unsigned long)(p)),(val))) +#if defined(CONFIG_ATARI_ROM_ISA) +#define isa_rom_inb(port) rom_in_8(isa_itb(port)) +#define isa_rom_inw(port) \ + (ISA_SEX ? rom_in_be16(isa_itw(port)) \ + : rom_in_le16(isa_itw(port))) +#define isa_rom_inl(port) \ + (ISA_SEX ? rom_in_be32(isa_itw(port)) \ + : rom_in_le32(isa_itw(port))) + +#define isa_rom_outb(val, port) rom_out_8(isa_itb(port), (val)) +#define isa_rom_outw(val, port) \ + (ISA_SEX ? rom_out_be16(isa_itw(port), (val)) \ + : rom_out_le16(isa_itw(port), (val))) +#define isa_rom_outl(val, port) \ + (ISA_SEX ? rom_out_be32(isa_itw(port), (val)) \ + : rom_out_le32(isa_itw(port), (val))) + +#define isa_rom_readb(p) rom_in_8(isa_mtb((unsigned long)(p))) +#define isa_rom_readw(p) \ + (ISA_SEX ? rom_in_be16(isa_mtw((unsigned long)(p))) \ + : rom_in_le16(isa_mtw((unsigned long)(p)))) + +#define isa_rom_writeb(val, p) rom_out_8(isa_mtb((unsigned long)(p)), (val)) +#define isa_rom_writew(val, p) \ + (ISA_SEX ? rom_out_be16(isa_mtw((unsigned long)(p)), (val)) \ + : rom_out_le16(isa_mtw((unsigned long)(p)), (val))) +#endif + static inline void isa_delay(void) { switch(ISA_TYPE) @@ -226,6 +288,9 @@ static inline void isa_delay(void) #ifdef CONFIG_AMIGA_PCMCIA case ISA_TYPE_AG: break; #endif +#ifdef CONFIG_ATARI_ROM_ISA + case ISA_TYPE_ENEC: break; +#endif default: break; /* avoid warnings */ } } @@ -256,10 +321,40 @@ static inline void isa_delay(void) (ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \ raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1)) + +#if defined(CONFIG_ATARI_ROM_ISA) +#define isa_rom_inb_p(p) ({ u8 _v = isa_rom_inb(p); isa_delay(); _v; }) +#define isa_rom_inw_p(p) ({ u16 _v = isa_rom_inw(p); isa_delay(); _v; }) +#define isa_rom_inl_p(p) ({ u32 _v = isa_rom_inl(p); isa_delay(); _v; }) +#define isa_rom_outb_p(v, p) ({ isa_rom_outb((v), (p)); isa_delay(); }) +#define isa_rom_outw_p(v, p) ({ isa_rom_outw((v), (p)); isa_delay(); }) +#define isa_rom_outl_p(v, p) ({ isa_rom_outl((v), (p)); isa_delay(); }) + +#define isa_rom_insb(port, buf, nr) raw_rom_insb(isa_itb(port), (u8 *)(buf), (nr)) + +#define isa_rom_insw(port, buf, nr) \ + (ISA_SEX ? raw_rom_insw(isa_itw(port), (u16 *)(buf), (nr)) : \ + raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr))) + +#define isa_rom_insl(port, buf, nr) \ + (ISA_SEX ? raw_rom_insl(isa_itw(port), (u32 *)(buf), (nr)) : \ + raw_rom_insw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1)) + +#define isa_rom_outsb(port, buf, nr) raw_rom_outsb(isa_itb(port), (u8 *)(buf), (nr)) + +#define isa_rom_outsw(port, buf, nr) \ + (ISA_SEX ? raw_rom_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \ + raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr))) + +#define isa_rom_outsl(port, buf, nr) \ + (ISA_SEX ? raw_rom_outsl(isa_itw(port), (u32 *)(buf), (nr)) : \ + raw_rom_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1)) +#endif + #endif /* CONFIG_ISA */ -#if defined(CONFIG_ISA) && !defined(CONFIG_PCI) +#if defined(CONFIG_ISA) && !defined(CONFIG_PCI) && !defined(CONFIG_ATARI_ROM_ISA) #define inb isa_inb #define inb_p isa_inb_p #define outb isa_outb @@ -330,7 +425,43 @@ static inline void isa_delay(void) #endif #endif /* CONFIG_PCI */ -#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) +#if defined(CONFIG_ATARI_ROM_ISA) +/* + * kernel with both ROM port ISA and IDE compiled in, those have + * conflicting defs for in/out. Simply consider port < 1024 + * ROM port ISA and everything else regular ISA for IDE. read,write not defined + * in this case + */ +#define inb(port) ((port) < 1024 ? isa_rom_inb(port) : in_8(port)) +#define inb_p(port) ((port) < 1024 ? isa_rom_inb_p(port) : in_8(port)) +#define inw(port) ((port) < 1024 ? isa_rom_inw(port) : in_le16(port)) +#define inw_p(port) ((port) < 1024 ? isa_rom_inw_p(port) : in_le16(port)) +#define inl(port) ((port) < 1024 ? isa_rom_inl(port) : in_le32(port)) +#define inl_p(port) ((port) < 1024 ? isa_rom_inl_p(port) : in_le32(port)) + +#define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val))) +#define outb_p(val, port) ((port) < 1024 ? isa_rom_outb_p((val), (port)) : out_8((port), (val))) +#define outw(val, port) ((port) < 1024 ? isa_rom_outw((val), (port)) : out_le16((port), (val))) +#define outw_p(val, port) ((port) < 1024 ? isa_rom_outw_p((val), (port)) : out_le16((port), (val))) +#define outl(val, port) ((port) < 1024 ? isa_rom_outl((val), (port)) : out_le32((port), (val))) +#define outl_p(val, port) ((port) < 1024 ? isa_rom_outl_p((val), (port)) : out_le32((port), (val))) + +#define insb isa_rom_insb +#define insw isa_rom_insw +#define insl isa_rom_insl +#define outsb isa_rom_outsb +#define outsw isa_rom_outsw +#define outsl isa_rom_outsl + +#define readb isa_readb +#define readw isa_readw +#define writeb isa_writeb +#define writew isa_writew +#define readsl raw_insl +#define writesl raw_outsl +#endif + +#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) && !defined(CONFIG_ATARI_ROM_ISA) /* * We need to define dummy functions for GENERIC_IOMAP support. */ --- a/include/asm-m68k/raw_io.h +++ b/include/asm-m68k/raw_io.h @@ -10,7 +10,7 @@ #ifdef __KERNEL__ -#include +#include /* Values for nocacheflag and cmode */ @@ -60,6 +60,46 @@ extern void __iounmap(void *addr, unsign #define __raw_writew(val,addr) out_be16((addr),(val)) #define __raw_writel(val,addr) out_be32((addr),(val)) +/* + * Atari ROM port (cartridge port) ISA adapter, used for the EtherNEC NE2000 + * network card driver. + * The ISA adapter connects address lines A9-A13 to ISA address lines A0-A4, + * and hardwires the rest of the ISA addresses for a base address of 0x300. + * + * Data lines D8-D15 are connected to ISA data lines D0-D7 for reading. + * For writes, address lines A1-A8 are latched to ISA data lines D0-D7 + * (meaning the bit pattern on A1-A8 can be read back as byte). + * + * Reads and writes are byte only. + */ + +#if defined(CONFIG_ATARI_ROM_ISA) +#define rom_in_8(addr) \ + ({ u16 __v = (*(__force volatile u16 *) (addr)); __v >>= 8; __v; }) +#define rom_in_be16(addr) \ + ({ u16 __v = (*(__force volatile u16 *) (addr)); __v >>= 8; __v; }) +#define rom_in_be32(addr) \ + ({ u32 __v = (*(__force volatile u32 *) (addr)); __v >>= 8; __v; }) +#define rom_in_le16(addr) \ + ({ u16 __v = le16_to_cpu(*(__force volatile u16 *) (addr)); __v >>= 8; __v; }) +#define rom_in_le32(addr) \ + ({ u32 __v = le32_to_cpu(*(__force volatile u32 *) (addr)); __v >>= 8; __v; }) + +#define rom_out_8(addr, b) ({u8 __w, __v = (b); __w = ((*(__force volatile u8 *) ((addr) + 0x10000 + (__v<<1)))); }) +#define rom_out_be16(addr, w) ({u16 __w, __v = (w); __w = ((*(__force volatile u16 *) ((addr) + 0x10000 + (__v<<1)))); }) +#define rom_out_be32(addr, l) ({u32 __w, __v = (l); __w = ((*(__force volatile u32 *) ((addr) + 0x10000 + (__v<<1)))); }) +#define rom_out_le16(addr, w) ({u16 __w, __v = cpu_to_le16(w); __w = ((*(__force volatile u16 *) ((addr) + 0x10000 + (__v<<1)))); }) +#define rom_out_le32(addr, l) ({u32 __w, __v = cpu_to_le32(l); __w = ((*(__force volatile u32 *) ((addr) + 0x10000 + (__v<<1)))); }) + +#define raw_rom_inb rom_in_8 +#define raw_rom_inw rom_in_be16 +#define raw_rom_inl rom_in_be32 + +#define raw_rom_outb(val, port) rom_out_8((port), (val)) +#define raw_rom_outw(val, port) rom_out_be16((port), (val)) +#define raw_rom_outl(val, port) rom_out_be32((port), (val)) +#endif /* CONFIG_ATARI_ROM_ISA */ + static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len) { unsigned int i; @@ -342,6 +382,80 @@ static inline void raw_outsw_swapw(volat : "d0", "a0", "a1", "d6"); } + +#if defined(CONFIG_ATARI_ROM_ISA) +static inline void raw_rom_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len) +{ + unsigned int i; + + for (i = 0; i < len; i++) + *buf++ = rom_in_8(port); +} + +static inline void raw_rom_outsb(volatile u8 __iomem *port, const u8 *buf, + unsigned int len) +{ + unsigned int i; + + for (i = 0; i < len; i++) + rom_out_8(port, *buf++); +} + +static inline void raw_rom_insw(volatile u16 __iomem *port, u16 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + *buf++ = rom_in_be16(port); +} + +static inline void raw_rom_outsw(volatile u16 __iomem *port, const u16 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + rom_out_be16(port, *buf++); +} + +static inline void raw_rom_insw_swapw(volatile u16 __iomem *port, u16 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + *buf++ = rom_in_le16(port); +} + +static inline void raw_rom_outsw_swapw(volatile u16 __iomem *port, const u16 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + rom_out_le16(port, *buf++); +} + +static inline void raw_rom_insl(volatile u16 __iomem *port, u32 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + *buf++ = rom_in_be32(port); +} + +static inline void raw_rom_outsl(volatile u16 __iomem *port, const u32 *buf, + unsigned int nr) +{ + unsigned int i; + + for (i = 0; i < nr; i++) + rom_out_be32(port, *buf++); +} +#endif /* CONFIG_ATARI_ROM_ISA */ + #endif /* __KERNEL__ */ #endif /* _RAW_IO_H */