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path: root/drivers/mmc/host/tmio_mmc.h
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Diffstat (limited to 'drivers/mmc/host/tmio_mmc.h')
-rw-r--r--drivers/mmc/host/tmio_mmc.h162
1 files changed, 84 insertions, 78 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 6ad6704175dc..b9de03325c58 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -1,18 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Driver for the MMC / SD / SDIO cell found in:
*
* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
*
- * Copyright (C) 2015-17 Renesas Electronics Corporation
- * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2015-19 Renesas Electronics Corporation
+ * Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2007 Ian Molton
* Copyright (C) 2004 Ian Molton
- *
- * 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
- * published by the Free Software Foundation.
- *
*/
#ifndef TMIO_MMC_H
@@ -20,11 +16,13 @@
#include <linux/dmaengine.h>
#include <linux/highmem.h>
+#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
+#include <linux/workqueue.h>
#define CTL_SD_CMD 0x00
#define CTL_ARG_REG 0x04
@@ -46,9 +44,8 @@
#define CTL_DMA_ENABLE 0xd8
#define CTL_RESET_SD 0xe0
#define CTL_VERSION 0xe2
-#define CTL_SDIO_REGS 0x100
-#define CTL_CLK_AND_WAIT_CTL 0x138
-#define CTL_RESET_SDIO 0x1e0
+#define CTL_SDIF_MODE 0xe6 /* only known on R-Car 2+ */
+#define CTL_SD_STATUS 0xf2 /* only known on RZ/{G2L,G3E,V2H} */
/* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */
#define TMIO_STOP_STP BIT(0)
@@ -76,19 +73,24 @@
#define TMIO_STAT_DAT0 BIT(23) /* only known on R-Car so far */
#define TMIO_STAT_RXRDY BIT(24)
#define TMIO_STAT_TXRQ BIT(25)
+#define TMIO_STAT_ALWAYS_SET_27 BIT(27) /* only known on R-Car 2+ so far */
#define TMIO_STAT_ILL_FUNC BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */
#define TMIO_STAT_SCLKDIVEN BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */
#define TMIO_STAT_CMD_BUSY BIT(30)
#define TMIO_STAT_ILL_ACCESS BIT(31)
+/* Definitions for values the CTL_SD_CARD_CLK_CTL register can take */
#define CLK_CTL_DIV_MASK 0xff
#define CLK_CTL_SCLKEN BIT(8)
+/* Definitions for values the CTL_SD_MEM_CARD_OPT register can take */
+#define CARD_OPT_TOP_MASK 0xf0
+#define CARD_OPT_TOP_SHIFT 4
+#define CARD_OPT_EXTOP BIT(9) /* first appeared on R-Car Gen3 SDHI */
#define CARD_OPT_WIDTH8 BIT(13)
+#define CARD_OPT_ALWAYS1 BIT(14)
#define CARD_OPT_WIDTH BIT(15)
-#define TMIO_BBS 512 /* Boot block size */
-
/* Definitions for values the CTL_SDIO_STATUS register can take */
#define TMIO_SDIO_STAT_IOIRQ 0x0001
#define TMIO_SDIO_STAT_EXPUB52 0x4000
@@ -97,24 +99,31 @@
#define TMIO_SDIO_SETBITS_MASK 0x0006
+/* Definitions for values the CTL_DMA_ENABLE register can take */
+#define DMA_ENABLE_DMASDRW BIT(1)
+
+/* Definitions for values the CTL_SDIF_MODE register can take */
+#define SDIF_MODE_HS400 BIT(0) /* only known on R-Car 2+ */
+
+/* Definitions for values the CTL_SD_STATUS register can take */
+#define SD_STATUS_PWEN BIT(0) /* only known on RZ/{G3E,V2H} */
+#define SD_STATUS_IOVS BIT(16) /* only known on RZ/{G3E,V2H} */
+
/* Define some IRQ masks */
/* This is the mask used at reset by the chip */
#define TMIO_MASK_ALL 0x837f031d
+#define TMIO_MASK_ALL_RCAR2 0x8b7f031d
#define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND)
#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)
#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \
TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
+#define TMIO_MAX_BLK_SIZE 512
+
struct tmio_mmc_data;
struct tmio_mmc_host;
-struct tmio_mmc_dma {
- enum dma_slave_buswidth dma_buswidth;
- bool (*filter)(struct dma_chan *chan, void *arg);
- void (*enable)(struct tmio_mmc_host *host, bool enable);
-};
-
struct tmio_mmc_dma_ops {
void (*start)(struct tmio_mmc_host *host, struct mmc_data *data);
void (*enable)(struct tmio_mmc_host *host, bool enable);
@@ -122,6 +131,11 @@ struct tmio_mmc_dma_ops {
struct tmio_mmc_data *pdata);
void (*release)(struct tmio_mmc_host *host);
void (*abort)(struct tmio_mmc_host *host);
+ void (*dataend)(struct tmio_mmc_host *host);
+
+ /* optional */
+ void (*end)(struct tmio_mmc_host *host); /* held host->lock */
+ bool (*dma_irq)(struct tmio_mmc_host *host);
};
struct tmio_mmc_host {
@@ -130,28 +144,23 @@ struct tmio_mmc_host {
struct mmc_request *mrq;
struct mmc_data *data;
struct mmc_host *mmc;
-
- /* Callbacks for clock / power control */
- void (*set_pwr)(struct platform_device *host, int state);
- void (*set_clk_div)(struct platform_device *host, int state);
+ struct mmc_host_ops ops;
/* pio related stuff */
struct scatterlist *sg_ptr;
struct scatterlist *sg_orig;
unsigned int sg_len;
unsigned int sg_off;
- unsigned long bus_shift;
+ unsigned int bus_shift;
struct platform_device *pdev;
struct tmio_mmc_data *pdata;
- struct tmio_mmc_dma *dma;
/* DMA support */
- bool force_pio;
+ bool dma_on;
struct dma_chan *chan_rx;
struct dma_chan *chan_tx;
- struct completion dma_dataend;
- struct tasklet_struct dma_issue;
+ struct work_struct dma_issue;
struct scatterlist bounce_sg;
u8 *bounce_buf;
@@ -163,50 +172,36 @@ struct tmio_mmc_host {
u32 sdcard_irq_mask;
u32 sdio_irq_mask;
unsigned int clk_cache;
+ u32 sdcard_irq_setbit_mask;
+ u32 sdcard_irq_mask_all;
spinlock_t lock; /* protect host private data */
unsigned long last_req_ts;
struct mutex ios_lock; /* protect set_ios() context */
bool native_hotplug;
bool sdio_irq_enabled;
- u32 scc_tappos;
/* Mandatory callback */
int (*clk_enable)(struct tmio_mmc_host *host);
+ void (*set_clock)(struct tmio_mmc_host *host, unsigned int clock);
/* Optional callbacks */
- unsigned int (*clk_update)(struct tmio_mmc_host *host,
- unsigned int new_clock);
void (*clk_disable)(struct tmio_mmc_host *host);
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
- int (*card_busy)(struct mmc_host *mmc);
- int (*start_signal_voltage_switch)(struct mmc_host *mmc,
- struct mmc_ios *ios);
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
- void (*hw_reset)(struct tmio_mmc_host *host);
- void (*prepare_tuning)(struct tmio_mmc_host *host, unsigned long tap);
- bool (*check_scc_error)(struct tmio_mmc_host *host);
-
- /*
- * Mandatory callback for tuning to occur which is optional for SDR50
- * and mandatory for SDR104.
- */
- unsigned int (*init_tuning)(struct tmio_mmc_host *host);
- int (*select_tuning)(struct tmio_mmc_host *host);
-
- /* Tuning values: 1 for success, 0 for failure */
- DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));
- unsigned int tap_num;
+ void (*reset)(struct tmio_mmc_host *host, bool preserve);
+ bool (*check_retune)(struct tmio_mmc_host *host, struct mmc_request *mrq);
+ void (*fixup_request)(struct tmio_mmc_host *host, struct mmc_request *mrq);
+ unsigned int (*get_timeout_cycles)(struct tmio_mmc_host *host);
+ void (*sdio_irq)(struct tmio_mmc_host *host);
const struct tmio_mmc_dma_ops *dma_ops;
};
-struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev);
-void tmio_mmc_host_free(struct tmio_mmc_host *host);
-int tmio_mmc_host_probe(struct tmio_mmc_host *host,
- struct tmio_mmc_data *pdata,
- const struct tmio_mmc_dma_ops *dma_ops);
+struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev,
+ struct tmio_mmc_data *pdata);
+int tmio_mmc_host_probe(struct tmio_mmc_host *host);
void tmio_mmc_host_remove(struct tmio_mmc_host *host);
void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
@@ -214,49 +209,52 @@ void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
irqreturn_t tmio_mmc_irq(int irq, void *devid);
-static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
- unsigned long *flags)
-{
- local_irq_save(*flags);
- return kmap_atomic(sg_page(sg)) + sg->offset;
-}
-
-static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
- unsigned long *flags, void *virt)
-{
- kunmap_atomic(virt - sg->offset);
- local_irq_restore(*flags);
-}
-
-#ifdef CONFIG_PM
int tmio_mmc_host_runtime_suspend(struct device *dev);
int tmio_mmc_host_runtime_resume(struct device *dev);
-#endif
static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
{
- return readw(host->ctl + (addr << host->bus_shift));
+ return ioread16(host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
u16 *buf, int count)
{
- readsw(host->ctl + (addr << host->bus_shift), buf, count);
+ ioread16_rep(host->ctl + (addr << host->bus_shift), buf, count);
}
static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,
int addr)
{
- return readw(host->ctl + (addr << host->bus_shift)) |
- readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
+ return ioread16(host->ctl + (addr << host->bus_shift)) |
+ ioread16(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
+}
+
+static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
+{
+ return ioread32(host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_read32_rep(struct tmio_mmc_host *host, int addr,
u32 *buf, int count)
{
- readsl(host->ctl + (addr << host->bus_shift), buf, count);
+ ioread32_rep(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+#ifdef CONFIG_64BIT
+static inline void sd_ctrl_read64_rep(struct tmio_mmc_host *host, int addr,
+ u64 *buf, int count)
+{
+ readsq(host->ctl + (addr << host->bus_shift), buf, count);
}
+static inline void sd_ctrl_write64_rep(struct tmio_mmc_host *host, int addr,
+ const u64 *buf, int count)
+{
+ writesq(host->ctl + (addr << host->bus_shift), buf, count);
+}
+#endif
+
static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
u16 val)
{
@@ -265,26 +263,34 @@ static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
*/
if (host->write16_hook && host->write16_hook(host, addr))
return;
- writew(val, host->ctl + (addr << host->bus_shift));
+ iowrite16(val, host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
u16 *buf, int count)
{
- writesw(host->ctl + (addr << host->bus_shift), buf, count);
+ iowrite16_rep(host->ctl + (addr << host->bus_shift), buf, count);
}
static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host,
int addr, u32 val)
{
- writew(val & 0xffff, host->ctl + (addr << host->bus_shift));
- writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
+ if (addr == CTL_IRQ_MASK || addr == CTL_STATUS)
+ val |= host->sdcard_irq_setbit_mask;
+
+ iowrite16(val & 0xffff, host->ctl + (addr << host->bus_shift));
+ iowrite16(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
+}
+
+static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val)
+{
+ iowrite32(val, host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_write32_rep(struct tmio_mmc_host *host, int addr,
const u32 *buf, int count)
{
- writesl(host->ctl + (addr << host->bus_shift), buf, count);
+ iowrite32_rep(host->ctl + (addr << host->bus_shift), buf, count);
}
#endif
generated by cgit (git 2.34.1) at 2025-12-25 23:18:10 +0000