m68k/atari: ROM port ISA adapter support

Atari ROM port ISA adapter support for EtherNEC and NetUSBee adapters

16 bit access for ROM port adapters follows debugging and
clarification by David Galvez <dgalvez75@gmail.com>. The NetUSBee
ISP1160 USB chip uses these macros.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

1 files changed, 130 insertions, 6 deletions

diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h
index a6686d26fe17..ffdf54f44bc6 100644
--- a/arch/m68k/include/asm/io_mm.h
+++ b/arch/m68k/include/asm/io_mm.h
@@ -63,6 +63,23 @@
 #endif
 #endif /* AMIGA_PCMCIA */
 
+#ifdef CONFIG_ATARI_ROM_ISA
+
+#define enec_isa_read_base  0xfffa0000
+#define enec_isa_write_base 0xfffb0000
+
+#define ENEC_ISA_IO_B(ioaddr)   (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
+#define ENEC_ISA_IO_W(ioaddr)   (enec_isa_read_base+((((unsigned long)(ioaddr))&0x7F)<<9))
+#define ENEC_ISA_MEM_B(madr)    (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
+#define ENEC_ISA_MEM_W(madr)    (enec_isa_read_base+((((unsigned long)(madr))&0x7F)<<9))
+
+#ifndef MULTI_ISA
+#define MULTI_ISA 0
+#else
+#undef MULTI_ISA
+#define MULTI_ISA 1
+#endif
+#endif /* ATARI_ROM_ISA */
 
 
 #if defined(CONFIG_PCI) && defined(CONFIG_COLDFIRE)
@@ -111,14 +128,15 @@ void mcf_pci_outsl(u32 addr, const u32 *buf, u32 len);
 #define readw(addr)     in_le16(addr)
 #define writew(v, addr) out_le16((addr), (v))
 
-#elif defined(CONFIG_ISA)
+#elif defined(CONFIG_ISA) || defined(CONFIG_ATARI_ROM_ISA)
 
 #if MULTI_ISA == 0
 #undef MULTI_ISA
 #endif
 
-#define ISA_TYPE_Q40 (1)
-#define ISA_TYPE_AG  (2)
+#define ISA_TYPE_Q40  (1)
+#define ISA_TYPE_AG   (2)
+#define ISA_TYPE_ENEC (3)
 
 #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
 #define ISA_TYPE ISA_TYPE_Q40
@@ -128,6 +146,10 @@ void mcf_pci_outsl(u32 addr, const u32 *buf, u32 len);
 #define ISA_TYPE ISA_TYPE_AG
 #define ISA_SEX  1
 #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;
@@ -152,6 +174,9 @@ static inline u8 __iomem *isa_itb(unsigned long addr)
 #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 */
     }
 }
@@ -165,6 +190,9 @@ static inline u16 __iomem *isa_itw(unsigned long addr)
 #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 */
     }
 }
@@ -188,6 +216,9 @@ static inline u8 __iomem *isa_mtb(unsigned long addr)
 #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 */
     }
 }
@@ -201,6 +232,9 @@ static inline u16 __iomem *isa_mtw(unsigned long addr)
 #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 */
     }
 }
@@ -222,6 +256,36 @@ static inline u16 __iomem *isa_mtw(unsigned long addr)
         (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val))  \
                  : out_le16(isa_mtw((unsigned long)(p)),(val)))
 
+#ifdef 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_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_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_readw_swap(p)       \
+        (ISA_SEX ? rom_in_le16(isa_mtw((unsigned long)(p)))     \
+                 : rom_in_be16(isa_mtw((unsigned long)(p))))
+#define isa_rom_readw_raw(p)   rom_in_be16(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)))
+#define isa_rom_writew_swap(val, p)  \
+        (ISA_SEX ? rom_out_le16(isa_mtw((unsigned long)(p)), (val))     \
+                 : rom_out_be16(isa_mtw((unsigned long)(p)), (val)))
+#define isa_rom_writew_raw(val, p)  rom_out_be16(isa_mtw((unsigned long)(p)), (val))
+#endif /* CONFIG_ATARI_ROM_ISA */
+
 static inline void isa_delay(void)
 {
   switch(ISA_TYPE)
@@ -232,6 +296,9 @@ 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 */
     }
 }
@@ -263,6 +330,29 @@ static inline void isa_delay(void)
                   raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
 
 
+#ifdef 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_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_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_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)))
+#endif /* CONFIG_ATARI_ROM_ISA */
+
+#endif  /* CONFIG_ISA || CONFIG_ATARI_ROM_ISA */
+
+
+#if defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
 #define inb     isa_inb
 #define inb_p   isa_inb_p
 #define outb    isa_outb
@@ -285,9 +375,43 @@ static inline void isa_delay(void)
 #define readw   isa_readw
 #define writeb  isa_writeb
 #define writew  isa_writew
+#endif  /* CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
 
-#else  /* CONFIG_ISA */
-
+#ifdef 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 defined
+ * below.
+ */
+#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             isa_inl
+#define inl_p           isa_inl_p
+
+#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            isa_outl
+#define outl_p          isa_outl_p
+
+#define insb(port, buf, nr)     ((port) < 1024 ? isa_rom_insb((port), (buf), (nr)) : isa_insb((port), (buf), (nr)))
+#define insw(port, buf, nr)     ((port) < 1024 ? isa_rom_insw((port), (buf), (nr)) : isa_insw((port), (buf), (nr)))
+#define insl                    isa_insl
+#define outsb(port, buf, nr)    ((port) < 1024 ? isa_rom_outsb((port), (buf), (nr)) : isa_outsb((port), (buf), (nr)))
+#define outsw(port, buf, nr)    ((port) < 1024 ? isa_rom_outsw((port), (buf), (nr)) : isa_outsw((port), (buf), (nr)))
+#define outsl                   isa_outsl
+
+#define readb(addr)             in_8(addr)
+#define writeb(val, addr)       out_8((addr), (val))
+#define readw(addr)             in_le16(addr)
+#define writew(val, addr)       out_le16((addr), (val))
+#endif /* CONFIG_ATARI_ROM_ISA */
+
+#if !defined(CONFIG_ISA) && !defined(CONFIG_ATARI_ROM_ISA)
 /*
  * We need to define dummy functions for GENERIC_IOMAP support.
  */
@@ -319,7 +443,7 @@ static inline void isa_delay(void)
 #define readw(addr)      in_le16(addr)
 #define writew(val,addr) out_le16((addr),(val))
 
-#endif /* CONFIG_ISA */
+#endif /* !CONFIG_ISA && !CONFIG_ATARI_ROM_ISA */
 
 #define readl(addr)      in_le32(addr)
 #define writel(val,addr) out_le32((addr),(val))