diff options
Diffstat (limited to 'drivers/isdn/hardware/mISDN/iohelper.h')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/iohelper.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/mISDN/iohelper.h b/drivers/isdn/hardware/mISDN/iohelper.h new file mode 100644 index 000000000..b2b2bde8e --- /dev/null +++ b/drivers/isdn/hardware/mISDN/iohelper.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * iohelper.h + * helper for define functions to access ISDN hardware + * supported are memory mapped IO + * indirect port IO (one port for address, one for data) + * + * Author Karsten Keil <keil@isdn4linux.de> + * + * Copyright 2009 by Karsten Keil <keil@isdn4linux.de> + */ + +#ifndef _IOHELPER_H +#define _IOHELPER_H + +typedef u8 (read_reg_func)(void *hwp, u8 offset); + typedef void (write_reg_func)(void *hwp, u8 offset, u8 value); + typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size); + + struct _ioport { + u32 port; + u32 ale; + }; + +#define IOFUNC_IO(name, hws, ap) \ + static u8 Read##name##_IO(void *p, u8 off) { \ + struct hws *hw = p; \ + return inb(hw->ap.port + off); \ + } \ + static void Write##name##_IO(void *p, u8 off, u8 val) { \ + struct hws *hw = p; \ + outb(val, hw->ap.port + off); \ + } \ + static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + insb(hw->ap.port + off, dp, size); \ + } \ + static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + outsb(hw->ap.port + off, dp, size); \ + } + +#define IOFUNC_IND(name, hws, ap) \ + static u8 Read##name##_IND(void *p, u8 off) { \ + struct hws *hw = p; \ + outb(off, hw->ap.ale); \ + return inb(hw->ap.port); \ + } \ + static void Write##name##_IND(void *p, u8 off, u8 val) { \ + struct hws *hw = p; \ + outb(off, hw->ap.ale); \ + outb(val, hw->ap.port); \ + } \ + static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + outb(off, hw->ap.ale); \ + insb(hw->ap.port, dp, size); \ + } \ + static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + outb(off, hw->ap.ale); \ + outsb(hw->ap.port, dp, size); \ + } + +#define IOFUNC_MEMIO(name, hws, typ, adr) \ + static u8 Read##name##_MIO(void *p, u8 off) { \ + struct hws *hw = p; \ + return readb(((typ *)hw->adr) + off); \ + } \ + static void Write##name##_MIO(void *p, u8 off, u8 val) { \ + struct hws *hw = p; \ + writeb(val, ((typ *)hw->adr) + off); \ + } \ + static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + while (size--) \ + *dp++ = readb(((typ *)hw->adr) + off); \ + } \ + static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \ + struct hws *hw = p; \ + while (size--) \ + writeb(*dp++, ((typ *)hw->adr) + off); \ + } + +#define ASSIGN_FUNC(typ, name, dest) do { \ + dest.read_reg = &Read##name##_##typ; \ + dest.write_reg = &Write##name##_##typ; \ + dest.read_fifo = &ReadFiFo##name##_##typ; \ + dest.write_fifo = &WriteFiFo##name##_##typ; \ + } while (0) +#define ASSIGN_FUNC_IPAC(typ, target) do { \ + ASSIGN_FUNC(typ, ISAC, target.isac); \ + ASSIGN_FUNC(typ, IPAC, target); \ + } while (0) + +#endif |