Commit 30271774 authored by Pierre Ossman's avatar Pierre Ossman Committed by Russell King

[MMC] wbsd update

Patch from Pierre Ossman

This patch includes the latest changes to the wbsd driver.
* Proper usage of kunmap.
* Comment about hw bugs.
* Waits for data transfers to finish properly.
* Added module version info.
* FIFO bug fix for small reads.
* Optimised FIFO loop.
* DMA demand mode.
* IRQ race condition when sending commands fixed.
parent 36b963a6
This diff is collapsed.
/*
* linux/drivers/mmc/wbsd.h
* linux/drivers/mmc/wbsd.h - Winbond W83L51xD SD/MMC driver
*
* Copyright (C) 2004 Pierre Ossman, All Rights Reserved.
* Copyright (C) 2004-2005 Pierre Ossman, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
......@@ -119,6 +119,8 @@ const int valid_ids[] = {
#define WBSD_FIFOEN_FULL 0x10
#define WBSD_FIFO_THREMASK 0x0F
#define WBSD_BLOCK_READ 0x80
#define WBSD_BLOCK_WRITE 0x40
#define WBSD_BUSY 0x20
#define WBSD_CARDTRAFFIC 0x04
#define WBSD_SENDCMD 0x02
......@@ -132,9 +134,6 @@ const int valid_ids[] = {
#define WBSD_CRC_FAIL 0x0B /* S101E (01011) */
/* 64kB / 512 */
#define NR_SG 128
struct wbsd_host
{
struct mmc_host* mmc; /* MMC structure */
......@@ -143,9 +142,11 @@ struct wbsd_host
struct mmc_request* mrq; /* Current request */
struct scatterlist sg[NR_SG]; /* SG list */
u8 isr; /* Accumulated ISR */
struct scatterlist* cur_sg; /* Current SG entry */
unsigned int num_sg; /* Number of entries left */
void* mapped_sg; /* vaddr of mapped sg */
unsigned int offset; /* Offset into current entry */
unsigned int remain; /* Data left in curren entry */
......
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