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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 and only version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 294 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.825281744@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
237 lines
5.8 KiB
C
237 lines
5.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*/
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#ifndef LINUX_MMC_CQHCI_H
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#define LINUX_MMC_CQHCI_H
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#include <linux/compiler.h>
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#include <linux/bitops.h>
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#include <linux/spinlock_types.h>
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#include <linux/types.h>
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#include <linux/completion.h>
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#include <linux/wait.h>
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#include <linux/irqreturn.h>
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#include <asm/io.h>
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/* registers */
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/* version */
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#define CQHCI_VER 0x00
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#define CQHCI_VER_MAJOR(x) (((x) & GENMASK(11, 8)) >> 8)
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#define CQHCI_VER_MINOR1(x) (((x) & GENMASK(7, 4)) >> 4)
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#define CQHCI_VER_MINOR2(x) ((x) & GENMASK(3, 0))
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/* capabilities */
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#define CQHCI_CAP 0x04
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/* configuration */
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#define CQHCI_CFG 0x08
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#define CQHCI_DCMD 0x00001000
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#define CQHCI_TASK_DESC_SZ 0x00000100
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#define CQHCI_ENABLE 0x00000001
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/* control */
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#define CQHCI_CTL 0x0C
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#define CQHCI_CLEAR_ALL_TASKS 0x00000100
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#define CQHCI_HALT 0x00000001
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/* interrupt status */
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#define CQHCI_IS 0x10
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#define CQHCI_IS_HAC BIT(0)
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#define CQHCI_IS_TCC BIT(1)
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#define CQHCI_IS_RED BIT(2)
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#define CQHCI_IS_TCL BIT(3)
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#define CQHCI_IS_MASK (CQHCI_IS_TCC | CQHCI_IS_RED)
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/* interrupt status enable */
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#define CQHCI_ISTE 0x14
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/* interrupt signal enable */
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#define CQHCI_ISGE 0x18
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/* interrupt coalescing */
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#define CQHCI_IC 0x1C
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#define CQHCI_IC_ENABLE BIT(31)
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#define CQHCI_IC_RESET BIT(16)
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#define CQHCI_IC_ICCTHWEN BIT(15)
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#define CQHCI_IC_ICCTH(x) (((x) & 0x1F) << 8)
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#define CQHCI_IC_ICTOVALWEN BIT(7)
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#define CQHCI_IC_ICTOVAL(x) ((x) & 0x7F)
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/* task list base address */
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#define CQHCI_TDLBA 0x20
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/* task list base address upper */
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#define CQHCI_TDLBAU 0x24
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/* door-bell */
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#define CQHCI_TDBR 0x28
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/* task completion notification */
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#define CQHCI_TCN 0x2C
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/* device queue status */
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#define CQHCI_DQS 0x30
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/* device pending tasks */
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#define CQHCI_DPT 0x34
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/* task clear */
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#define CQHCI_TCLR 0x38
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/* send status config 1 */
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#define CQHCI_SSC1 0x40
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#define CQHCI_SSC1_CBC_MASK GENMASK(19, 16)
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/* send status config 2 */
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#define CQHCI_SSC2 0x44
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/* response for dcmd */
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#define CQHCI_CRDCT 0x48
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/* response mode error mask */
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#define CQHCI_RMEM 0x50
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/* task error info */
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#define CQHCI_TERRI 0x54
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#define CQHCI_TERRI_C_INDEX(x) ((x) & GENMASK(5, 0))
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#define CQHCI_TERRI_C_TASK(x) (((x) & GENMASK(12, 8)) >> 8)
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#define CQHCI_TERRI_C_VALID(x) ((x) & BIT(15))
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#define CQHCI_TERRI_D_INDEX(x) (((x) & GENMASK(21, 16)) >> 16)
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#define CQHCI_TERRI_D_TASK(x) (((x) & GENMASK(28, 24)) >> 24)
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#define CQHCI_TERRI_D_VALID(x) ((x) & BIT(31))
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/* command response index */
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#define CQHCI_CRI 0x58
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/* command response argument */
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#define CQHCI_CRA 0x5C
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#define CQHCI_INT_ALL 0xF
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#define CQHCI_IC_DEFAULT_ICCTH 31
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#define CQHCI_IC_DEFAULT_ICTOVAL 1
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/* attribute fields */
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#define CQHCI_VALID(x) (((x) & 1) << 0)
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#define CQHCI_END(x) (((x) & 1) << 1)
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#define CQHCI_INT(x) (((x) & 1) << 2)
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#define CQHCI_ACT(x) (((x) & 0x7) << 3)
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/* data command task descriptor fields */
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#define CQHCI_FORCED_PROG(x) (((x) & 1) << 6)
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#define CQHCI_CONTEXT(x) (((x) & 0xF) << 7)
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#define CQHCI_DATA_TAG(x) (((x) & 1) << 11)
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#define CQHCI_DATA_DIR(x) (((x) & 1) << 12)
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#define CQHCI_PRIORITY(x) (((x) & 1) << 13)
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#define CQHCI_QBAR(x) (((x) & 1) << 14)
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#define CQHCI_REL_WRITE(x) (((x) & 1) << 15)
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#define CQHCI_BLK_COUNT(x) (((x) & 0xFFFF) << 16)
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#define CQHCI_BLK_ADDR(x) (((x) & 0xFFFFFFFF) << 32)
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/* direct command task descriptor fields */
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#define CQHCI_CMD_INDEX(x) (((x) & 0x3F) << 16)
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#define CQHCI_CMD_TIMING(x) (((x) & 1) << 22)
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#define CQHCI_RESP_TYPE(x) (((x) & 0x3) << 23)
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/* transfer descriptor fields */
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#define CQHCI_DAT_LENGTH(x) (((x) & 0xFFFF) << 16)
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#define CQHCI_DAT_ADDR_LO(x) (((x) & 0xFFFFFFFF) << 32)
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#define CQHCI_DAT_ADDR_HI(x) (((x) & 0xFFFFFFFF) << 0)
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struct cqhci_host_ops;
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struct mmc_host;
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struct mmc_request;
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struct cqhci_slot;
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struct cqhci_host {
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const struct cqhci_host_ops *ops;
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void __iomem *mmio;
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struct mmc_host *mmc;
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spinlock_t lock;
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/* relative card address of device */
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unsigned int rca;
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/* 64 bit DMA */
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bool dma64;
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int num_slots;
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int qcnt;
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u32 dcmd_slot;
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u32 caps;
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#define CQHCI_TASK_DESC_SZ_128 0x1
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u32 quirks;
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#define CQHCI_QUIRK_SHORT_TXFR_DESC_SZ 0x1
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bool enabled;
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bool halted;
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bool init_done;
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bool activated;
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bool waiting_for_idle;
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bool recovery_halt;
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size_t desc_size;
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size_t data_size;
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u8 *desc_base;
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/* total descriptor size */
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u8 slot_sz;
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/* 64/128 bit depends on CQHCI_CFG */
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u8 task_desc_len;
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/* 64 bit on 32-bit arch, 128 bit on 64-bit */
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u8 link_desc_len;
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u8 *trans_desc_base;
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/* same length as transfer descriptor */
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u8 trans_desc_len;
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dma_addr_t desc_dma_base;
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dma_addr_t trans_desc_dma_base;
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struct completion halt_comp;
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wait_queue_head_t wait_queue;
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struct cqhci_slot *slot;
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};
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struct cqhci_host_ops {
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void (*dumpregs)(struct mmc_host *mmc);
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void (*write_l)(struct cqhci_host *host, u32 val, int reg);
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u32 (*read_l)(struct cqhci_host *host, int reg);
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void (*enable)(struct mmc_host *mmc);
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void (*disable)(struct mmc_host *mmc, bool recovery);
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void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq,
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u64 *data);
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};
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static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg)
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{
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if (unlikely(host->ops->write_l))
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host->ops->write_l(host, val, reg);
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else
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writel_relaxed(val, host->mmio + reg);
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}
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static inline u32 cqhci_readl(struct cqhci_host *host, int reg)
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{
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if (unlikely(host->ops->read_l))
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return host->ops->read_l(host, reg);
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else
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return readl_relaxed(host->mmio + reg);
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}
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struct platform_device;
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irqreturn_t cqhci_irq(struct mmc_host *mmc, u32 intmask, int cmd_error,
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int data_error);
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int cqhci_init(struct cqhci_host *cq_host, struct mmc_host *mmc, bool dma64);
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struct cqhci_host *cqhci_pltfm_init(struct platform_device *pdev);
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int cqhci_suspend(struct mmc_host *mmc);
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int cqhci_resume(struct mmc_host *mmc);
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#endif
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