mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2024-12-29 09:12:07 +00:00
921c87ba38
The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/mmc/* from tasklet to BH workqueue. Based on the work done by Tejun Heo <tj@kernel.org> Tested-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Aubin Constans <aubin.constans@microchip.com> Acked-by: Aubin Constans <aubin.constans@microchip.com> Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Signed-off-by: Allen Pais <allen.lkml@gmail.com> Link: https://lore.kernel.org/r/20240701100736.4001658-1-allen.lkml@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* cb710/cb710-mmc.h
|
|
*
|
|
* Copyright by Michał Mirosław, 2008-2009
|
|
*/
|
|
#ifndef LINUX_CB710_MMC_H
|
|
#define LINUX_CB710_MMC_H
|
|
|
|
#include <linux/cb710.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
/* per-MMC-reader structure */
|
|
struct cb710_mmc_reader {
|
|
struct work_struct finish_req_bh_work;
|
|
struct mmc_request *mrq;
|
|
spinlock_t irq_lock;
|
|
unsigned char last_power_mode;
|
|
};
|
|
|
|
/* some device struct walking */
|
|
|
|
static inline struct mmc_host *cb710_slot_to_mmc(struct cb710_slot *slot)
|
|
{
|
|
return platform_get_drvdata(&slot->pdev);
|
|
}
|
|
|
|
static inline struct cb710_slot *cb710_mmc_to_slot(struct mmc_host *mmc)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(mmc_dev(mmc));
|
|
return cb710_pdev_to_slot(pdev);
|
|
}
|
|
|
|
/* registers (this might be all wrong ;) */
|
|
|
|
#define CB710_MMC_DATA_PORT 0x00
|
|
|
|
#define CB710_MMC_CONFIG_PORT 0x04
|
|
#define CB710_MMC_CONFIG0_PORT 0x04
|
|
#define CB710_MMC_CONFIG1_PORT 0x05
|
|
#define CB710_MMC_C1_4BIT_DATA_BUS 0x40
|
|
#define CB710_MMC_CONFIG2_PORT 0x06
|
|
#define CB710_MMC_C2_READ_PIO_SIZE_MASK 0x0F /* N-1 */
|
|
#define CB710_MMC_CONFIG3_PORT 0x07
|
|
|
|
#define CB710_MMC_CONFIGB_PORT 0x08
|
|
|
|
#define CB710_MMC_IRQ_ENABLE_PORT 0x0C
|
|
#define CB710_MMC_IE_TEST_MASK 0x00BF
|
|
#define CB710_MMC_IE_CARD_INSERTION_STATUS 0x1000
|
|
#define CB710_MMC_IE_IRQ_ENABLE 0x8000
|
|
#define CB710_MMC_IE_CISTATUS_MASK \
|
|
(CB710_MMC_IE_CARD_INSERTION_STATUS|CB710_MMC_IE_IRQ_ENABLE)
|
|
|
|
#define CB710_MMC_STATUS_PORT 0x10
|
|
#define CB710_MMC_STATUS_ERROR_EVENTS 0x60FF
|
|
#define CB710_MMC_STATUS0_PORT 0x10
|
|
#define CB710_MMC_S0_FIFO_UNDERFLOW 0x40
|
|
#define CB710_MMC_STATUS1_PORT 0x11
|
|
#define CB710_MMC_S1_COMMAND_SENT 0x01
|
|
#define CB710_MMC_S1_DATA_TRANSFER_DONE 0x02
|
|
#define CB710_MMC_S1_PIO_TRANSFER_DONE 0x04
|
|
#define CB710_MMC_S1_CARD_CHANGED 0x10
|
|
#define CB710_MMC_S1_RESET 0x20
|
|
#define CB710_MMC_STATUS2_PORT 0x12
|
|
#define CB710_MMC_S2_FIFO_READY 0x01
|
|
#define CB710_MMC_S2_FIFO_EMPTY 0x02
|
|
#define CB710_MMC_S2_BUSY_10 0x10
|
|
#define CB710_MMC_S2_BUSY_20 0x20
|
|
#define CB710_MMC_STATUS3_PORT 0x13
|
|
#define CB710_MMC_S3_CARD_DETECTED 0x02
|
|
#define CB710_MMC_S3_WRITE_PROTECTED 0x04
|
|
|
|
#define CB710_MMC_CMD_TYPE_PORT 0x14
|
|
#define CB710_MMC_RSP_TYPE_MASK 0x0007
|
|
#define CB710_MMC_RSP_R1 (0)
|
|
#define CB710_MMC_RSP_136 (5)
|
|
#define CB710_MMC_RSP_NO_CRC (2)
|
|
#define CB710_MMC_RSP_PRESENT_MASK 0x0018
|
|
#define CB710_MMC_RSP_NONE (0 << 3)
|
|
#define CB710_MMC_RSP_PRESENT (1 << 3)
|
|
#define CB710_MMC_RSP_PRESENT_X (2 << 3)
|
|
#define CB710_MMC_CMD_TYPE_MASK 0x0060
|
|
#define CB710_MMC_CMD_BC (0 << 5)
|
|
#define CB710_MMC_CMD_BCR (1 << 5)
|
|
#define CB710_MMC_CMD_AC (2 << 5)
|
|
#define CB710_MMC_CMD_ADTC (3 << 5)
|
|
#define CB710_MMC_DATA_READ 0x0080
|
|
#define CB710_MMC_CMD_CODE_MASK 0x3F00
|
|
#define CB710_MMC_CMD_CODE_SHIFT 8
|
|
#define CB710_MMC_IS_APP_CMD 0x4000
|
|
#define CB710_MMC_RSP_BUSY 0x8000
|
|
|
|
#define CB710_MMC_CMD_PARAM_PORT 0x18
|
|
#define CB710_MMC_TRANSFER_SIZE_PORT 0x1C
|
|
#define CB710_MMC_RESPONSE0_PORT 0x20
|
|
#define CB710_MMC_RESPONSE1_PORT 0x24
|
|
#define CB710_MMC_RESPONSE2_PORT 0x28
|
|
#define CB710_MMC_RESPONSE3_PORT 0x2C
|
|
|
|
#endif /* LINUX_CB710_MMC_H */
|