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[155.4.221.67]) by smtp.gmail.com with ESMTPSA id a79sm7450069ljb.46.2016.12.30.04.48.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 30 Dec 2016 04:48:05 -0800 (PST) From: Ulf Hansson To: linux-mmc@vger.kernel.org, Ulf Hansson Cc: Jaehoon Chung , Adrian Hunter , Linus Walleij Subject: [PATCH 07/21] mmc: dw_mmc: Remove the public dw_mmc header file Date: Fri, 30 Dec 2016 13:47:20 +0100 Message-Id: <1483102054-1752-8-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1483102054-1752-1-git-send-email-ulf.hansson@linaro.org> References: <1483102054-1752-1-git-send-email-ulf.hansson@linaro.org> There are currently no external users of the public dw_mmc header file, except the dw_mmc driver itself. Therefore let's move the definitions from the public dw_mmc header file into the existing private dw_mmc header file and then remove the public one. Signed-off-by: Ulf Hansson --- MAINTAINERS | 1 - drivers/mmc/host/dw_mmc-exynos.c | 1 - drivers/mmc/host/dw_mmc-k3.c | 1 - drivers/mmc/host/dw_mmc-pci.c | 1 - drivers/mmc/host/dw_mmc-pltfm.c | 1 - drivers/mmc/host/dw_mmc-rockchip.c | 1 - drivers/mmc/host/dw_mmc.c | 1 - drivers/mmc/host/dw_mmc.h | 257 ++++++++++++++++++++++++++++++++++ include/linux/mmc/dw_mmc.h | 274 ------------------------------------- 9 files changed, 257 insertions(+), 281 deletions(-) delete mode 100644 include/linux/mmc/dw_mmc.h -- 1.9.1 Reviewed-by: Linus Walleij diff --git a/MAINTAINERS b/MAINTAINERS index cfff2c9..b09febe 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10862,7 +10862,6 @@ SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER M: Jaehoon Chung L: linux-mmc@vger.kernel.org S: Maintained -F: include/linux/mmc/dw_mmc.h F: drivers/mmc/host/dw_mmc* SYSTEM TRACE MODULE CLASS diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index e133528..25691cc 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -13,7 +13,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c index 9821e6b..e38fb00 100644 --- a/drivers/mmc/host/dw_mmc-k3.c +++ b/drivers/mmc/host/dw_mmc-k3.c @@ -11,7 +11,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c index ab82796..ab87132 100644 --- a/drivers/mmc/host/dw_mmc-pci.c +++ b/drivers/mmc/host/dw_mmc-pci.c @@ -18,7 +18,6 @@ #include #include #include -#include #include "dw_mmc.h" #define PCI_BAR_NO 2 diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c index 1236d49b..58c13e2 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.c +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -20,7 +20,6 @@ #include #include #include -#include #include #include diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index 9a46e46..372fb6e 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -11,7 +11,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index b44306b..c2242cd 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index c594658..9601461 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -14,6 +14,263 @@ #ifndef _DW_MMC_H_ #define _DW_MMC_H_ +#include +#include +#include +#include + +#define MAX_MCI_SLOTS 2 + +enum dw_mci_state { + STATE_IDLE = 0, + STATE_SENDING_CMD, + STATE_SENDING_DATA, + STATE_DATA_BUSY, + STATE_SENDING_STOP, + STATE_DATA_ERROR, + STATE_SENDING_CMD11, + STATE_WAITING_CMD11_DONE, +}; + +enum { + EVENT_CMD_COMPLETE = 0, + EVENT_XFER_COMPLETE, + EVENT_DATA_COMPLETE, + EVENT_DATA_ERROR, +}; + +enum dw_mci_cookie { + COOKIE_UNMAPPED, + COOKIE_PRE_MAPPED, /* mapped by pre_req() of dwmmc */ + COOKIE_MAPPED, /* mapped by prepare_data() of dwmmc */ +}; + +struct mmc_data; + +enum { + TRANS_MODE_PIO = 0, + TRANS_MODE_IDMAC, + TRANS_MODE_EDMAC +}; + +struct dw_mci_dma_slave { + struct dma_chan *ch; + enum dma_transfer_direction direction; +}; + +/** + * struct dw_mci - MMC controller state shared between all slots + * @lock: Spinlock protecting the queue and associated data. + * @irq_lock: Spinlock protecting the INTMASK setting. + * @regs: Pointer to MMIO registers. + * @fifo_reg: Pointer to MMIO registers for data FIFO + * @sg: Scatterlist entry currently being processed by PIO code, if any. + * @sg_miter: PIO mapping scatterlist iterator. + * @cur_slot: The slot which is currently using the controller. + * @mrq: The request currently being processed on @cur_slot, + * or NULL if the controller is idle. + * @cmd: The command currently being sent to the card, or NULL. + * @data: The data currently being transferred, or NULL if no data + * transfer is in progress. + * @stop_abort: The command currently prepared for stoping transfer. + * @prev_blksz: The former transfer blksz record. + * @timing: Record of current ios timing. + * @use_dma: Whether DMA channel is initialized or not. + * @using_dma: Whether DMA is in use for the current transfer. + * @dma_64bit_address: Whether DMA supports 64-bit address mode or not. + * @sg_dma: Bus address of DMA buffer. + * @sg_cpu: Virtual address of DMA buffer. + * @dma_ops: Pointer to platform-specific DMA callbacks. + * @cmd_status: Snapshot of SR taken upon completion of the current + * @ring_size: Buffer size for idma descriptors. + * command. Only valid when EVENT_CMD_COMPLETE is pending. + * @dms: structure of slave-dma private data. + * @phy_regs: physical address of controller's register map + * @data_status: Snapshot of SR taken upon completion of the current + * data transfer. Only valid when EVENT_DATA_COMPLETE or + * EVENT_DATA_ERROR is pending. + * @stop_cmdr: Value to be loaded into CMDR when the stop command is + * to be sent. + * @dir_status: Direction of current transfer. + * @tasklet: Tasklet running the request state machine. + * @pending_events: Bitmask of events flagged by the interrupt handler + * to be processed by the tasklet. + * @completed_events: Bitmask of events which the state machine has + * processed. + * @state: Tasklet state. + * @queue: List of slots waiting for access to the controller. + * @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus + * rate and timeout calculations. + * @current_speed: Configured rate of the controller. + * @num_slots: Number of slots available. + * @fifoth_val: The value of FIFOTH register. + * @verid: Denote Version ID. + * @dev: Device associated with the MMC controller. + * @pdata: Platform data associated with the MMC controller. + * @drv_data: Driver specific data for identified variant of the controller + * @priv: Implementation defined private data. + * @biu_clk: Pointer to bus interface unit clock instance. + * @ciu_clk: Pointer to card interface unit clock instance. + * @slot: Slots sharing this MMC controller. + * @fifo_depth: depth of FIFO. + * @data_shift: log2 of FIFO item size. + * @part_buf_start: Start index in part_buf. + * @part_buf_count: Bytes of partial data in part_buf. + * @part_buf: Simple buffer for partial fifo reads/writes. + * @push_data: Pointer to FIFO push function. + * @pull_data: Pointer to FIFO pull function. + * @vqmmc_enabled: Status of vqmmc, should be true or false. + * @irq_flags: The flags to be passed to request_irq. + * @irq: The irq value to be passed to request_irq. + * @sdio_id0: Number of slot0 in the SDIO interrupt registers. + * @cmd11_timer: Timer for SD3.0 voltage switch over scheme. + * @dto_timer: Timer for broken data transfer over scheme. + * + * Locking + * ======= + * + * @lock is a softirq-safe spinlock protecting @queue as well as + * @cur_slot, @mrq and @state. These must always be updated + * at the same time while holding @lock. + * + * @irq_lock is an irq-safe spinlock protecting the INTMASK register + * to allow the interrupt handler to modify it directly. Held for only long + * enough to read-modify-write INTMASK and no other locks are grabbed when + * holding this one. + * + * The @mrq field of struct dw_mci_slot is also protected by @lock, + * and must always be written at the same time as the slot is added to + * @queue. + * + * @pending_events and @completed_events are accessed using atomic bit + * operations, so they don't need any locking. + * + * None of the fields touched by the interrupt handler need any + * locking. However, ordering is important: Before EVENT_DATA_ERROR or + * EVENT_DATA_COMPLETE is set in @pending_events, all data-related + * interrupts must be disabled and @data_status updated with a + * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the + * CMDRDY interrupt must be disabled and @cmd_status updated with a + * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the + * bytes_xfered field of @data must be written. This is ensured by + * using barriers. + */ +struct dw_mci { + spinlock_t lock; + spinlock_t irq_lock; + void __iomem *regs; + void __iomem *fifo_reg; + + struct scatterlist *sg; + struct sg_mapping_iter sg_miter; + + struct dw_mci_slot *cur_slot; + struct mmc_request *mrq; + struct mmc_command *cmd; + struct mmc_data *data; + struct mmc_command stop_abort; + unsigned int prev_blksz; + unsigned char timing; + + /* DMA interface members*/ + int use_dma; + int using_dma; + int dma_64bit_address; + + dma_addr_t sg_dma; + void *sg_cpu; + const struct dw_mci_dma_ops *dma_ops; + /* For idmac */ + unsigned int ring_size; + + /* For edmac */ + struct dw_mci_dma_slave *dms; + /* Registers's physical base address */ + resource_size_t phy_regs; + + u32 cmd_status; + u32 data_status; + u32 stop_cmdr; + u32 dir_status; + struct tasklet_struct tasklet; + unsigned long pending_events; + unsigned long completed_events; + enum dw_mci_state state; + struct list_head queue; + + u32 bus_hz; + u32 current_speed; + u32 num_slots; + u32 fifoth_val; + u16 verid; + struct device *dev; + struct dw_mci_board *pdata; + const struct dw_mci_drv_data *drv_data; + void *priv; + struct clk *biu_clk; + struct clk *ciu_clk; + struct dw_mci_slot *slot[MAX_MCI_SLOTS]; + + /* FIFO push and pull */ + int fifo_depth; + int data_shift; + u8 part_buf_start; + u8 part_buf_count; + union { + u16 part_buf16; + u32 part_buf32; + u64 part_buf; + }; + void (*push_data)(struct dw_mci *host, void *buf, int cnt); + void (*pull_data)(struct dw_mci *host, void *buf, int cnt); + + bool vqmmc_enabled; + unsigned long irq_flags; /* IRQ flags */ + int irq; + + int sdio_id0; + + struct timer_list cmd11_timer; + struct timer_list dto_timer; +}; + +/* DMA ops for Internal/External DMAC interface */ +struct dw_mci_dma_ops { + /* DMA Ops */ + int (*init)(struct dw_mci *host); + int (*start)(struct dw_mci *host, unsigned int sg_len); + void (*complete)(void *host); + void (*stop)(struct dw_mci *host); + void (*cleanup)(struct dw_mci *host); + void (*exit)(struct dw_mci *host); +}; + +struct dma_pdata; + +/* Board platform data */ +struct dw_mci_board { + u32 num_slots; + + unsigned int bus_hz; /* Clock speed at the cclk_in pad */ + + u32 caps; /* Capabilities */ + u32 caps2; /* More capabilities */ + u32 pm_caps; /* PM capabilities */ + /* + * Override fifo depth. If 0, autodetect it from the FIFOTH register, + * but note that this may not be reliable after a bootloader has used + * it. + */ + unsigned int fifo_depth; + + /* delay in mS before detecting cards after interrupt */ + u32 detect_delay_ms; + + struct reset_control *rstc; + struct dw_mci_dma_ops *dma_ops; + struct dma_pdata *data; +}; + #define DW_MMC_240A 0x240a #define DW_MMC_280A 0x280a diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h deleted file mode 100644 index 15db6f8..0000000 --- a/include/linux/mmc/dw_mmc.h +++ /dev/null @@ -1,274 +0,0 @@ -/* - * Synopsys DesignWare Multimedia Card Interface driver - * (Based on NXP driver for lpc 31xx) - * - * Copyright (C) 2009 NXP Semiconductors - * Copyright (C) 2009, 2010 Imagination Technologies Ltd. - * - * 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. - */ - -#ifndef LINUX_MMC_DW_MMC_H -#define LINUX_MMC_DW_MMC_H - -#include -#include -#include -#include - -#define MAX_MCI_SLOTS 2 - -enum dw_mci_state { - STATE_IDLE = 0, - STATE_SENDING_CMD, - STATE_SENDING_DATA, - STATE_DATA_BUSY, - STATE_SENDING_STOP, - STATE_DATA_ERROR, - STATE_SENDING_CMD11, - STATE_WAITING_CMD11_DONE, -}; - -enum { - EVENT_CMD_COMPLETE = 0, - EVENT_XFER_COMPLETE, - EVENT_DATA_COMPLETE, - EVENT_DATA_ERROR, -}; - -enum dw_mci_cookie { - COOKIE_UNMAPPED, - COOKIE_PRE_MAPPED, /* mapped by pre_req() of dwmmc */ - COOKIE_MAPPED, /* mapped by prepare_data() of dwmmc */ -}; - -struct mmc_data; - -enum { - TRANS_MODE_PIO = 0, - TRANS_MODE_IDMAC, - TRANS_MODE_EDMAC -}; - -struct dw_mci_dma_slave { - struct dma_chan *ch; - enum dma_transfer_direction direction; -}; - -/** - * struct dw_mci - MMC controller state shared between all slots - * @lock: Spinlock protecting the queue and associated data. - * @irq_lock: Spinlock protecting the INTMASK setting. - * @regs: Pointer to MMIO registers. - * @fifo_reg: Pointer to MMIO registers for data FIFO - * @sg: Scatterlist entry currently being processed by PIO code, if any. - * @sg_miter: PIO mapping scatterlist iterator. - * @cur_slot: The slot which is currently using the controller. - * @mrq: The request currently being processed on @cur_slot, - * or NULL if the controller is idle. - * @cmd: The command currently being sent to the card, or NULL. - * @data: The data currently being transferred, or NULL if no data - * transfer is in progress. - * @stop_abort: The command currently prepared for stoping transfer. - * @prev_blksz: The former transfer blksz record. - * @timing: Record of current ios timing. - * @use_dma: Whether DMA channel is initialized or not. - * @using_dma: Whether DMA is in use for the current transfer. - * @dma_64bit_address: Whether DMA supports 64-bit address mode or not. - * @sg_dma: Bus address of DMA buffer. - * @sg_cpu: Virtual address of DMA buffer. - * @dma_ops: Pointer to platform-specific DMA callbacks. - * @cmd_status: Snapshot of SR taken upon completion of the current - * @ring_size: Buffer size for idma descriptors. - * command. Only valid when EVENT_CMD_COMPLETE is pending. - * @dms: structure of slave-dma private data. - * @phy_regs: physical address of controller's register map - * @data_status: Snapshot of SR taken upon completion of the current - * data transfer. Only valid when EVENT_DATA_COMPLETE or - * EVENT_DATA_ERROR is pending. - * @stop_cmdr: Value to be loaded into CMDR when the stop command is - * to be sent. - * @dir_status: Direction of current transfer. - * @tasklet: Tasklet running the request state machine. - * @pending_events: Bitmask of events flagged by the interrupt handler - * to be processed by the tasklet. - * @completed_events: Bitmask of events which the state machine has - * processed. - * @state: Tasklet state. - * @queue: List of slots waiting for access to the controller. - * @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus - * rate and timeout calculations. - * @current_speed: Configured rate of the controller. - * @num_slots: Number of slots available. - * @fifoth_val: The value of FIFOTH register. - * @verid: Denote Version ID. - * @dev: Device associated with the MMC controller. - * @pdata: Platform data associated with the MMC controller. - * @drv_data: Driver specific data for identified variant of the controller - * @priv: Implementation defined private data. - * @biu_clk: Pointer to bus interface unit clock instance. - * @ciu_clk: Pointer to card interface unit clock instance. - * @slot: Slots sharing this MMC controller. - * @fifo_depth: depth of FIFO. - * @data_shift: log2 of FIFO item size. - * @part_buf_start: Start index in part_buf. - * @part_buf_count: Bytes of partial data in part_buf. - * @part_buf: Simple buffer for partial fifo reads/writes. - * @push_data: Pointer to FIFO push function. - * @pull_data: Pointer to FIFO pull function. - * @vqmmc_enabled: Status of vqmmc, should be true or false. - * @irq_flags: The flags to be passed to request_irq. - * @irq: The irq value to be passed to request_irq. - * @sdio_id0: Number of slot0 in the SDIO interrupt registers. - * @cmd11_timer: Timer for SD3.0 voltage switch over scheme. - * @dto_timer: Timer for broken data transfer over scheme. - * - * Locking - * ======= - * - * @lock is a softirq-safe spinlock protecting @queue as well as - * @cur_slot, @mrq and @state. These must always be updated - * at the same time while holding @lock. - * - * @irq_lock is an irq-safe spinlock protecting the INTMASK register - * to allow the interrupt handler to modify it directly. Held for only long - * enough to read-modify-write INTMASK and no other locks are grabbed when - * holding this one. - * - * The @mrq field of struct dw_mci_slot is also protected by @lock, - * and must always be written at the same time as the slot is added to - * @queue. - * - * @pending_events and @completed_events are accessed using atomic bit - * operations, so they don't need any locking. - * - * None of the fields touched by the interrupt handler need any - * locking. However, ordering is important: Before EVENT_DATA_ERROR or - * EVENT_DATA_COMPLETE is set in @pending_events, all data-related - * interrupts must be disabled and @data_status updated with a - * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the - * CMDRDY interrupt must be disabled and @cmd_status updated with a - * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the - * bytes_xfered field of @data must be written. This is ensured by - * using barriers. - */ -struct dw_mci { - spinlock_t lock; - spinlock_t irq_lock; - void __iomem *regs; - void __iomem *fifo_reg; - - struct scatterlist *sg; - struct sg_mapping_iter sg_miter; - - struct dw_mci_slot *cur_slot; - struct mmc_request *mrq; - struct mmc_command *cmd; - struct mmc_data *data; - struct mmc_command stop_abort; - unsigned int prev_blksz; - unsigned char timing; - - /* DMA interface members*/ - int use_dma; - int using_dma; - int dma_64bit_address; - - dma_addr_t sg_dma; - void *sg_cpu; - const struct dw_mci_dma_ops *dma_ops; - /* For idmac */ - unsigned int ring_size; - - /* For edmac */ - struct dw_mci_dma_slave *dms; - /* Registers's physical base address */ - resource_size_t phy_regs; - - u32 cmd_status; - u32 data_status; - u32 stop_cmdr; - u32 dir_status; - struct tasklet_struct tasklet; - unsigned long pending_events; - unsigned long completed_events; - enum dw_mci_state state; - struct list_head queue; - - u32 bus_hz; - u32 current_speed; - u32 num_slots; - u32 fifoth_val; - u16 verid; - struct device *dev; - struct dw_mci_board *pdata; - const struct dw_mci_drv_data *drv_data; - void *priv; - struct clk *biu_clk; - struct clk *ciu_clk; - struct dw_mci_slot *slot[MAX_MCI_SLOTS]; - - /* FIFO push and pull */ - int fifo_depth; - int data_shift; - u8 part_buf_start; - u8 part_buf_count; - union { - u16 part_buf16; - u32 part_buf32; - u64 part_buf; - }; - void (*push_data)(struct dw_mci *host, void *buf, int cnt); - void (*pull_data)(struct dw_mci *host, void *buf, int cnt); - - bool vqmmc_enabled; - unsigned long irq_flags; /* IRQ flags */ - int irq; - - int sdio_id0; - - struct timer_list cmd11_timer; - struct timer_list dto_timer; -}; - -/* DMA ops for Internal/External DMAC interface */ -struct dw_mci_dma_ops { - /* DMA Ops */ - int (*init)(struct dw_mci *host); - int (*start)(struct dw_mci *host, unsigned int sg_len); - void (*complete)(void *host); - void (*stop)(struct dw_mci *host); - void (*cleanup)(struct dw_mci *host); - void (*exit)(struct dw_mci *host); -}; - -struct dma_pdata; - -/* Board platform data */ -struct dw_mci_board { - u32 num_slots; - - unsigned int bus_hz; /* Clock speed at the cclk_in pad */ - - u32 caps; /* Capabilities */ - u32 caps2; /* More capabilities */ - u32 pm_caps; /* PM capabilities */ - /* - * Override fifo depth. If 0, autodetect it from the FIFOTH register, - * but note that this may not be reliable after a bootloader has used - * it. - */ - unsigned int fifo_depth; - - /* delay in mS before detecting cards after interrupt */ - u32 detect_delay_ms; - - struct reset_control *rstc; - struct dw_mci_dma_ops *dma_ops; - struct dma_pdata *data; -}; - -#endif /* LINUX_MMC_DW_MMC_H */