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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.h100
1 files changed, 55 insertions, 45 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index c03529e3f01a..b9de03325c58 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -4,8 +4,8 @@
*
* 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
@@ -16,11 +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
@@ -42,7 +44,8 @@
#define CTL_DMA_ENABLE 0xd8
#define CTL_RESET_SD 0xe0
#define CTL_VERSION 0xe2
-#define CTL_SDIF_MODE 0xe6
+#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)
@@ -81,7 +84,11 @@
#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)
/* Definitions for values the CTL_SDIO_STATUS register can take */
@@ -95,16 +102,25 @@
/* 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_INIT_RCAR2 0x8b7f031d /* Initial value for R-Car Gen2+ */
#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;
@@ -116,6 +132,10 @@ struct tmio_mmc_dma_ops {
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 {
@@ -126,9 +146,6 @@ struct tmio_mmc_host {
struct mmc_host *mmc;
struct mmc_host_ops ops;
- /* Callbacks for clock / power control */
- void (*set_pwr)(struct platform_device *host, int state);
-
/* pio related stuff */
struct scatterlist *sg_ptr;
struct scatterlist *sg_orig;
@@ -143,7 +160,7 @@ struct tmio_mmc_host {
bool dma_on;
struct dma_chan *chan_rx;
struct dma_chan *chan_tx;
- struct tasklet_struct dma_issue;
+ struct work_struct dma_issue;
struct scatterlist bounce_sg;
u8 *bounce_buf;
@@ -156,6 +173,7 @@ struct tmio_mmc_host {
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;
@@ -172,33 +190,17 @@ struct tmio_mmc_host {
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
- void (*reset)(struct tmio_mmc_host *host);
- 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;
- unsigned long tap_set;
-
- void (*prepare_hs400_tuning)(struct tmio_mmc_host *host);
- void (*hs400_downgrade)(struct tmio_mmc_host *host);
- void (*hs400_complete)(struct tmio_mmc_host *host);
+ 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,
struct tmio_mmc_data *pdata);
-void tmio_mmc_host_free(struct tmio_mmc_host *host);
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);
@@ -207,24 +209,8 @@ 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)
{
@@ -244,12 +230,31 @@ static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,
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)
{
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)
{
@@ -277,6 +282,11 @@ static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host,
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)
{
generated by cgit (git 2.34.1) at 2025-12-25 09:16:52 +0000