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/* zd_types.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _ZD_TYPES_H
#define _ZD_TYPES_H
#include <linux/types.h>
/* We have three register spaces mapped into the overall USB address space of
* 64K words (16-bit values). There is the control register space of
* double-word registers, the eeprom register space and the firmware register
* space. The control register space is byte mapped, the others are word
* mapped.
*
* For that reason, we are using byte offsets for control registers and word
* offsets for everything else.
*/
typedef u32 __nocast zd_addr_t;
enum {
ADDR_BASE_MASK = 0xff000000,
ADDR_OFFSET_MASK = 0x0000ffff,
ADDR_ZERO_MASK = 0x00ff0000,
NULL_BASE = 0x00000000,
USB_BASE = 0x01000000,
CR_BASE = 0x02000000,
CR_MAX_OFFSET = 0x0b30,
E2P_BASE = 0x03000000,
E2P_MAX_OFFSET = 0x007e,
FW_BASE = 0x04000000,
FW_MAX_OFFSET = 0x0005,
};
#define ZD_ADDR_BASE(addr) ((u32)(addr) & ADDR_BASE_MASK)
#define ZD_OFFSET(addr) ((u32)(addr) & ADDR_OFFSET_MASK)
#define ZD_ADDR(base, offset) \
((zd_addr_t)(((base) & ADDR_BASE_MASK) | ((offset) & ADDR_OFFSET_MASK)))
#define ZD_NULL_ADDR ((zd_addr_t)0)
#define USB_REG(offset) ZD_ADDR(USB_BASE, offset) /* word addressing */
#define CTL_REG(offset) ZD_ADDR(CR_BASE, offset) /* byte addressing */
#define E2P_REG(offset) ZD_ADDR(E2P_BASE, offset) /* word addressing */
#define FW_REG(offset) ZD_ADDR(FW_BASE, offset) /* word addressing */
static inline zd_addr_t zd_inc_word(zd_addr_t addr)
{
u32 base = ZD_ADDR_BASE(addr);
u32 offset = ZD_OFFSET(addr);
offset += base == CR_BASE ? 2 : 1;
return base | offset;
}
#endif /* _ZD_TYPES_H */
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