diff options
Diffstat (limited to 'target/linux/ramips/files-4.9/drivers/mmc/host/mtk-mmc/sd.c')
| -rw-r--r-- | target/linux/ramips/files-4.9/drivers/mmc/host/mtk-mmc/sd.c | 3056 |
1 files changed, 0 insertions, 3056 deletions
diff --git a/target/linux/ramips/files-4.9/drivers/mmc/host/mtk-mmc/sd.c b/target/linux/ramips/files-4.9/drivers/mmc/host/mtk-mmc/sd.c deleted file mode 100644 index 3a146f646c..0000000000 --- a/target/linux/ramips/files-4.9/drivers/mmc/host/mtk-mmc/sd.c +++ /dev/null @@ -1,3056 +0,0 @@ -/* Copyright Statement: - * - * This software/firmware and related documentation ("MediaTek Software") are - * protected under relevant copyright laws. The information contained herein - * is confidential and proprietary to MediaTek Inc. and/or its licensors. - * Without the prior written permission of MediaTek inc. and/or its licensors, - * any reproduction, modification, use or disclosure of MediaTek Software, - * and information contained herein, in whole or in part, shall be strictly prohibited. - * - * MediaTek Inc. (C) 2010. All rights reserved. - * - * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES - * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") - * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON - * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. - * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE - * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR - * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH - * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES - * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES - * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK - * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR - * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND - * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, - * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, - * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO - * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. - * - * The following software/firmware and/or related documentation ("MediaTek Software") - * have been modified by MediaTek Inc. All revisions are subject to any receiver's - * applicable license agreements with MediaTek Inc. - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/timer.h> -#include <linux/ioport.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/blkdev.h> -#include <linux/slab.h> -#include <linux/mmc/host.h> -#include <linux/mmc/card.h> -#include <linux/mmc/core.h> -#include <linux/mmc/mmc.h> -#include <linux/mmc/sd.h> -#include <linux/mmc/sdio.h> -#include <linux/dma-mapping.h> - -/* +++ by chhung */ -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/version.h> -#include <linux/pm.h> -#include <linux/of.h> - -#define MSDC_SMPL_FALLING (1) -#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */ -#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */ -#define MSDC_REMOVABLE (1 << 5) /* removable slot */ -#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */ -#define MSDC_HIGHSPEED (1 << 7) - -//#define IRQ_SDC 14 //MT7620 /*FIXME*/ -#ifdef CONFIG_SOC_MT7621 -#define RALINK_SYSCTL_BASE 0xbe000000 -#define RALINK_MSDC_BASE 0xbe130000 -#else -#define RALINK_SYSCTL_BASE 0xb0000000 -#define RALINK_MSDC_BASE 0xb0130000 -#endif -#define IRQ_SDC 22 /*FIXME*/ - -#include <asm/dma.h> -/* end of +++ */ - - -#include <asm/mach-ralink/ralink_regs.h> - -#if 0 /* --- by chhung */ -#include <mach/board.h> -#include <mach/mt6575_devs.h> -#include <mach/mt6575_typedefs.h> -#include <mach/mt6575_clock_manager.h> -#include <mach/mt6575_pm_ldo.h> -//#include <mach/mt6575_pll.h> -//#include <mach/mt6575_gpio.h> -//#include <mach/mt6575_gpt_sw.h> -#include <asm/tcm.h> -// #include <mach/mt6575_gpt.h> -#endif /* end of --- */ - -#include "mt6575_sd.h" -#include "dbg.h" - -/* +++ by chhung */ -#include "board.h" -/* end of +++ */ - -#if 0 /* --- by chhung */ -#define isb() __asm__ __volatile__ ("" : : : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ - : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") -#endif /* end of --- */ - -#define DRV_NAME "mtk-sd" - -#define HOST_MAX_NUM (1) /* +/- by chhung */ - -#if defined (CONFIG_SOC_MT7620) -#define HOST_MAX_MCLK (48000000) /* +/- by chhung */ -#elif defined (CONFIG_SOC_MT7621) -#define HOST_MAX_MCLK (50000000) /* +/- by chhung */ -#endif -#define HOST_MIN_MCLK (260000) - -#define HOST_MAX_BLKSZ (2048) - -#define MSDC_OCR_AVAIL (MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33) - -#define GPIO_PULL_DOWN (0) -#define GPIO_PULL_UP (1) - -#if 0 /* --- by chhung */ -#define MSDC_CLKSRC_REG (0xf100000C) -#define PDN_REG (0xF1000010) -#endif /* end of --- */ - -#define DEFAULT_DEBOUNCE (8) /* 8 cycles */ -#define DEFAULT_DTOC (40) /* data timeout counter. 65536x40 sclk. */ - -#define CMD_TIMEOUT (HZ/10) /* 100ms */ -#define DAT_TIMEOUT (HZ/2 * 5) /* 500ms x5 */ - -#define MAX_DMA_CNT (64 * 1024 - 512) /* a single transaction for WIFI may be 50K*/ - -#define MAX_GPD_NUM (1 + 1) /* one null gpd */ -#define MAX_BD_NUM (1024) -#define MAX_BD_PER_GPD (MAX_BD_NUM) - -#define MAX_HW_SGMTS (MAX_BD_NUM) -#define MAX_PHY_SGMTS (MAX_BD_NUM) -#define MAX_SGMT_SZ (MAX_DMA_CNT) -#define MAX_REQ_SZ (MAX_SGMT_SZ * 8) - -static int mtk_sw_poll; - -static int cd_active_low = 1; - -//================================= -#define PERI_MSDC0_PDN (15) -//#define PERI_MSDC1_PDN (16) -//#define PERI_MSDC2_PDN (17) -//#define PERI_MSDC3_PDN (18) - -#if 0 /* --- by chhung */ -/* gate means clock power down */ -static int g_clk_gate = 0; -#define msdc_gate_clock(id) \ - do { \ - g_clk_gate &= ~(1 << ((id) + PERI_MSDC0_PDN)); \ - } while(0) -/* not like power down register. 1 means clock on. */ -#define msdc_ungate_clock(id) \ - do { \ - g_clk_gate |= 1 << ((id) + PERI_MSDC0_PDN); \ - } while(0) - -// do we need sync object or not -void msdc_clk_status(int * status) -{ - *status = g_clk_gate; -} -#endif /* end of --- */ - -/* +++ by chhung */ -struct msdc_hw msdc0_hw = { - .clk_src = 0, - .cmd_edge = MSDC_SMPL_FALLING, - .data_edge = MSDC_SMPL_FALLING, - .clk_drv = 4, - .cmd_drv = 4, - .dat_drv = 4, - .data_pins = 4, - .data_offset = 0, - .flags = MSDC_SYS_SUSPEND | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED, -// .flags = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE, -}; - -static struct resource mtk_sd_resources[] = { - [0] = { - .start = RALINK_MSDC_BASE, - .end = RALINK_MSDC_BASE+0x3fff, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_SDC, /*FIXME*/ - .end = IRQ_SDC, /*FIXME*/ - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device mtk_sd_device = { - .name = "mtk-sd", - .id = 0, - .num_resources = ARRAY_SIZE(mtk_sd_resources), - .resource = mtk_sd_resources, -}; -/* end of +++ */ - -static int msdc_rsp[] = { - 0, /* RESP_NONE */ - 1, /* RESP_R1 */ - 2, /* RESP_R2 */ - 3, /* RESP_R3 */ - 4, /* RESP_R4 */ - 1, /* RESP_R5 */ - 1, /* RESP_R6 */ - 1, /* RESP_R7 */ - 7, /* RESP_R1b */ -}; - -/* For Inhanced DMA */ -#define msdc_init_gpd_ex(gpd,extlen,cmd,arg,blknum) \ - do { \ - ((gpd_t*)gpd)->extlen = extlen; \ - ((gpd_t*)gpd)->cmd = cmd; \ - ((gpd_t*)gpd)->arg = arg; \ - ((gpd_t*)gpd)->blknum = blknum; \ - }while(0) - -#define msdc_init_bd(bd, blkpad, dwpad, dptr, dlen) \ - do { \ - BUG_ON(dlen > 0xFFFFUL); \ - ((bd_t*)bd)->blkpad = blkpad; \ - ((bd_t*)bd)->dwpad = dwpad; \ - ((bd_t*)bd)->ptr = (void*)dptr; \ - ((bd_t*)bd)->buflen = dlen; \ - }while(0) - -#define msdc_txfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_TXCNT) >> 16) -#define msdc_rxfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_RXCNT) >> 0) -#define msdc_fifo_write32(v) sdr_write32(MSDC_TXDATA, (v)) -#define msdc_fifo_write8(v) sdr_write8(MSDC_TXDATA, (v)) -#define msdc_fifo_read32() sdr_read32(MSDC_RXDATA) -#define msdc_fifo_read8() sdr_read8(MSDC_RXDATA) - - -#define msdc_dma_on() sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO) -#define msdc_dma_off() sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO) - -#define msdc_retry(expr,retry,cnt) \ - do { \ - int backup = cnt; \ - while (retry) { \ - if (!(expr)) break; \ - if (cnt-- == 0) { \ - retry--; mdelay(1); cnt = backup; \ - } \ - } \ - WARN_ON(retry == 0); \ - } while(0) - -#if 0 /* --- by chhung */ -#define msdc_reset() \ - do { \ - int retry = 3, cnt = 1000; \ - sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \ - dsb(); \ - msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \ - } while(0) -#else -#define msdc_reset() \ - do { \ - int retry = 3, cnt = 1000; \ - sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \ - msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \ - } while(0) -#endif /* end of +/- */ - -#define msdc_clr_int() \ - do { \ - volatile u32 val = sdr_read32(MSDC_INT); \ - sdr_write32(MSDC_INT, val); \ - } while(0) - -#define msdc_clr_fifo() \ - do { \ - int retry = 3, cnt = 1000; \ - sdr_set_bits(MSDC_FIFOCS, MSDC_FIFOCS_CLR); \ - msdc_retry(sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_CLR, retry, cnt); \ - } while(0) - -#define msdc_irq_save(val) \ - do { \ - val = sdr_read32(MSDC_INTEN); \ - sdr_clr_bits(MSDC_INTEN, val); \ - } while(0) - -#define msdc_irq_restore(val) \ - do { \ - sdr_set_bits(MSDC_INTEN, val); \ - } while(0) - -/* clock source for host: global */ -#if defined (CONFIG_SOC_MT7620) -static u32 hclks[] = {48000000}; /* +/- by chhung */ -#elif defined (CONFIG_SOC_MT7621) -static u32 hclks[] = {50000000}; /* +/- by chhung */ -#endif - -//============================================ -// the power for msdc host controller: global -// always keep the VMC on. -//============================================ -#define msdc_vcore_on(host) \ - do { \ - INIT_MSG("[+]VMC ref. count<%d>", ++host->pwr_ref); \ - (void)hwPowerOn(MT65XX_POWER_LDO_VMC, VOL_3300, "SD"); \ - } while (0) -#define msdc_vcore_off(host) \ - do { \ - INIT_MSG("[-]VMC ref. count<%d>", --host->pwr_ref); \ - (void)hwPowerDown(MT65XX_POWER_LDO_VMC, "SD"); \ - } while (0) - -//==================================== -// the vdd output for card: global -// always keep the VMCH on. -//==================================== -#define msdc_vdd_on(host) \ - do { \ - (void)hwPowerOn(MT65XX_POWER_LDO_VMCH, VOL_3300, "SD"); \ - } while (0) -#define msdc_vdd_off(host) \ - do { \ - (void)hwPowerDown(MT65XX_POWER_LDO_VMCH, "SD"); \ - } while (0) - -#define sdc_is_busy() (sdr_read32(SDC_STS) & SDC_STS_SDCBUSY) -#define sdc_is_cmd_busy() (sdr_read32(SDC_STS) & SDC_STS_CMDBUSY) - -#define sdc_send_cmd(cmd,arg) \ - do { \ - sdr_write32(SDC_ARG, (arg)); \ - sdr_write32(SDC_CMD, (cmd)); \ - } while(0) - -// can modify to read h/w register. -//#define is_card_present(h) ((sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1); -#define is_card_present(h) (((struct msdc_host*)(h))->card_inserted) - -/* +++ by chhung */ -#ifndef __ASSEMBLY__ -#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff) -#else -#define PHYSADDR(a) ((a) & 0x1fffffff) -#endif -/* end of +++ */ -static unsigned int msdc_do_command(struct msdc_host *host, - struct mmc_command *cmd, - int tune, - unsigned long timeout); - -static int msdc_tune_cmdrsp(struct msdc_host*host,struct mmc_command *cmd); - -#ifdef MT6575_SD_DEBUG -static void msdc_dump_card_status(struct msdc_host *host, u32 status) -{ - static char *state[] = { - "Idle", /* 0 */ - "Ready", /* 1 */ - "Ident", /* 2 */ - "Stby", /* 3 */ - "Tran", /* 4 */ - "Data", /* 5 */ - "Rcv", /* 6 */ - "Prg", /* 7 */ - "Dis", /* 8 */ - "Reserved", /* 9 */ - "Reserved", /* 10 */ - "Reserved", /* 11 */ - "Reserved", /* 12 */ - "Reserved", /* 13 */ - "Reserved", /* 14 */ - "I/O mode", /* 15 */ - }; - if (status & R1_OUT_OF_RANGE) - N_MSG(RSP, "[CARD_STATUS] Out of Range"); - if (status & R1_ADDRESS_ERROR) - N_MSG(RSP, "[CARD_STATUS] Address Error"); - if (status & R1_BLOCK_LEN_ERROR) - N_MSG(RSP, "[CARD_STATUS] Block Len Error"); - if (status & R1_ERASE_SEQ_ERROR) - N_MSG(RSP, "[CARD_STATUS] Erase Seq Error"); - if (status & R1_ERASE_PARAM) - N_MSG(RSP, "[CARD_STATUS] Erase Param"); - if (status & R1_WP_VIOLATION) - N_MSG(RSP, "[CARD_STATUS] WP Violation"); - if (status & R1_CARD_IS_LOCKED) - N_MSG(RSP, "[CARD_STATUS] Card is Locked"); - if (status & R1_LOCK_UNLOCK_FAILED) - N_MSG(RSP, "[CARD_STATUS] Lock/Unlock Failed"); - if (status & R1_COM_CRC_ERROR) - N_MSG(RSP, "[CARD_STATUS] Command CRC Error"); - if (status & R1_ILLEGAL_COMMAND) - N_MSG(RSP, "[CARD_STATUS] Illegal Command"); - if (status & R1_CARD_ECC_FAILED) - N_MSG(RSP, "[CARD_STATUS] Card ECC Failed"); - if (status & R1_CC_ERROR) - N_MSG(RSP, "[CARD_STATUS] CC Error"); - if (status & R1_ERROR) - N_MSG(RSP, "[CARD_STATUS] Error"); - if (status & R1_UNDERRUN) - N_MSG(RSP, "[CARD_STATUS] Underrun"); - if (status & R1_OVERRUN) - N_MSG(RSP, "[CARD_STATUS] Overrun"); - if (status & R1_CID_CSD_OVERWRITE) - N_MSG(RSP, "[CARD_STATUS] CID/CSD Overwrite"); - if (status & R1_WP_ERASE_SKIP) - N_MSG(RSP, "[CARD_STATUS] WP Eraser Skip"); - if (status & R1_CARD_ECC_DISABLED) - N_MSG(RSP, "[CARD_STATUS] Card ECC Disabled"); - if (status & R1_ERASE_RESET) - N_MSG(RSP, "[CARD_STATUS] Erase Reset"); - if (status & R1_READY_FOR_DATA) - N_MSG(RSP, "[CARD_STATUS] Ready for Data"); - if (status & R1_SWITCH_ERROR) - N_MSG(RSP, "[CARD_STATUS] Switch error"); - if (status & R1_APP_CMD) - N_MSG(RSP, "[CARD_STATUS] App Command"); - - N_MSG(RSP, "[CARD_STATUS] '%s' State", state[R1_CURRENT_STATE(status)]); -} - -static void msdc_dump_ocr_reg(struct msdc_host *host, u32 resp) -{ - if (resp & (1 << 7)) - N_MSG(RSP, "[OCR] Low Voltage Range"); - if (resp & (1 << 15)) - N_MSG(RSP, "[OCR] 2.7-2.8 volt"); - if (resp & (1 << 16)) - N_MSG(RSP, "[OCR] 2.8-2.9 volt"); - if (resp & (1 << 17)) - N_MSG(RSP, "[OCR] 2.9-3.0 volt"); - if (resp & (1 << 18)) - N_MSG(RSP, "[OCR] 3.0-3.1 volt"); - if (resp & (1 << 19)) - N_MSG(RSP, "[OCR] 3.1-3.2 volt"); - if (resp & (1 << 20)) - N_MSG(RSP, "[OCR] 3.2-3.3 volt"); - if (resp & (1 << 21)) - N_MSG(RSP, "[OCR] 3.3-3.4 volt"); - if (resp & (1 << 22)) - N_MSG(RSP, "[OCR] 3.4-3.5 volt"); - if (resp & (1 << 23)) - N_MSG(RSP, "[OCR] 3.5-3.6 volt"); - if (resp & (1 << 24)) - N_MSG(RSP, "[OCR] Switching to 1.8V Accepted (S18A)"); - if (resp & (1 << 30)) - N_MSG(RSP, "[OCR] Card Capacity Status (CCS)"); - if (resp & (1 << 31)) - N_MSG(RSP, "[OCR] Card Power Up Status (Idle)"); - else - N_MSG(RSP, "[OCR] Card Power Up Status (Busy)"); -} - -static void msdc_dump_rca_resp(struct msdc_host *host, u32 resp) -{ - u32 status = (((resp >> 15) & 0x1) << 23) | - (((resp >> 14) & 0x1) << 22) | - (((resp >> 13) & 0x1) << 19) | - (resp & 0x1fff); - - N_MSG(RSP, "[RCA] 0x%.4x", resp >> 16); - msdc_dump_card_status(host, status); -} - -static void msdc_dump_io_resp(struct msdc_host *host, u32 resp) -{ - u32 flags = (resp >> 8) & 0xFF; - char *state[] = {"DIS", "CMD", "TRN", "RFU"}; - - if (flags & (1 << 7)) - N_MSG(RSP, "[IO] COM_CRC_ERR"); - if (flags & (1 << 6)) - N_MSG(RSP, "[IO] Illgal command"); - if (flags & (1 << 3)) - N_MSG(RSP, "[IO] Error"); - if (flags & (1 << 2)) - N_MSG(RSP, "[IO] RFU"); - if (flags & (1 << 1)) - N_MSG(RSP, "[IO] Function number error"); - if (flags & (1 << 0)) - N_MSG(RSP, "[IO] Out of range"); - - N_MSG(RSP, "[IO] State: %s, Data:0x%x", state[(resp >> 12) & 0x3], resp & 0xFF); -} -#endif - -static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks) -{ - u32 base = host->base; - u32 timeout, clk_ns; - - host->timeout_ns = ns; - host->timeout_clks = clks; - - clk_ns = 1000000000UL / host->sclk; - timeout = ns / clk_ns + clks; - timeout = timeout >> 16; /* in 65536 sclk cycle unit */ - timeout = timeout > 1 ? timeout - 1 : 0; - timeout = timeout > 255 ? 255 : timeout; - - sdr_set_field(SDC_CFG, SDC_CFG_DTOC, timeout); - - N_MSG(OPS, "Set read data timeout: %dns %dclks -> %d x 65536 cycles", - ns, clks, timeout + 1); -} - -/* msdc_eirq_sdio() will be called when EIRQ(for WIFI) */ -static void msdc_eirq_sdio(void *data) -{ - struct msdc_host *host = (struct msdc_host *)data; - - N_MSG(INT, "SDIO EINT"); - - mmc_signal_sdio_irq(host->mmc); -} - -/* msdc_eirq_cd will not be used! We not using EINT for card detection. */ -static void msdc_eirq_cd(void *data) -{ - struct msdc_host *host = (struct msdc_host *)data; - - N_MSG(INT, "CD EINT"); - -#if 0 - tasklet_hi_schedule(&host->card_tasklet); -#else - schedule_delayed_work(&host->card_delaywork, HZ); -#endif -} - -#if 0 -static void msdc_tasklet_card(unsigned long arg) -{ - struct msdc_host *host = (struct msdc_host *)arg; -#else -static void msdc_tasklet_card(struct work_struct *work) -{ - struct msdc_host *host = (struct msdc_host *)container_of(work, - struct msdc_host, card_delaywork.work); -#endif - struct msdc_hw *hw = host->hw; - u32 base = host->base; - u32 inserted; - u32 status = 0; - //u32 change = 0; - - spin_lock(&host->lock); - - if (hw->get_cd_status) { // NULL - inserted = hw->get_cd_status(); - } else { - status = sdr_read32(MSDC_PS); - if (cd_active_low) - inserted = (status & MSDC_PS_CDSTS) ? 0 : 1; - else - inserted = (status & MSDC_PS_CDSTS) ? 1 : 0; - } - if (host->mmc->caps & MMC_CAP_NEEDS_POLL) - inserted = 1; - -#if 0 - change = host->card_inserted ^ inserted; - host->card_inserted = inserted; - - if (change && !host->suspend) { - if (inserted) { - host->mmc->f_max = HOST_MAX_MCLK; // work around - } - mmc_detect_change(host->mmc, msecs_to_jiffies(20)); - } -#else /* Make sure: handle the last interrupt */ - host->card_inserted = inserted; - - if (!host->suspend) { - host->mmc->f_max = HOST_MAX_MCLK; - mmc_detect_change(host->mmc, msecs_to_jiffies(20)); - } - - IRQ_MSG("card found<%s>", inserted ? "inserted" : "removed"); -#endif - - spin_unlock(&host->lock); -} - -#if 0 /* --- by chhung */ -/* For E2 only */ -static u8 clk_src_bit[4] = { - 0, 3, 5, 7 -}; - -static void msdc_select_clksrc(struct msdc_host* host, unsigned char clksrc) -{ - u32 val; - u32 base = host->base; - - BUG_ON(clksrc > 3); - INIT_MSG("set clock source to <%d>", clksrc); - - val = sdr_read32(MSDC_CLKSRC_REG); - if (sdr_read32(MSDC_ECO_VER) >= 4) { - val &= ~(0x3 << clk_src_bit[host->id]); - val |= clksrc << clk_src_bit[host->id]; - } else { - val &= ~0x3; val |= clksrc; - } - sdr_write32(MSDC_CLKSRC_REG, val); - - host->hclk = hclks[clksrc]; - host->hw->clk_src = clksrc; -} -#endif /* end of --- */ - -static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz) -{ - //struct msdc_hw *hw = host->hw; - u32 base = host->base; - u32 mode; - u32 flags; - u32 div; - u32 sclk; - u32 hclk = host->hclk; - //u8 clksrc = hw->clk_src; - - if (!hz) { // set mmc system clock to 0 ? - //ERR_MSG("set mclk to 0!!!"); - msdc_reset(); - return; - } - - msdc_irq_save(flags); - -#if defined (CONFIG_MT7621_FPGA) || defined (CONFIG_MT7628_FPGA) - mode = 0x0; /* use divisor */ - if (hz >= (hclk >> 1)) { - div = 0; /* mean div = 1/2 */ - sclk = hclk >> 1; /* sclk = clk / 2 */ - } else { - div = (hclk + ((hz << 2) - 1)) / (hz << 2); - sclk = (hclk >> 2) / div; - } -#else - if (ddr) { - mode = 0x2; /* ddr mode and use divisor */ - if (hz >= (hclk >> 2)) { - div = 1; /* mean div = 1/4 */ - sclk = hclk >> 2; /* sclk = clk / 4 */ - } else { - div = (hclk + ((hz << 2) - 1)) / (hz << 2); - sclk = (hclk >> 2) / div; - } - } else if (hz >= hclk) { /* bug fix */ - mode = 0x1; /* no divisor and divisor is ignored */ - div = 0; - sclk = hclk; - } else { - mode = 0x0; /* use divisor */ - if (hz >= (hclk >> 1)) { - div = 0; /* mean div = 1/2 */ - sclk = hclk >> 1; /* sclk = clk / 2 */ - } else { - div = (hclk + ((hz << 2) - 1)) / (hz << 2); - sclk = (hclk >> 2) / div; - } - } -#endif - /* set clock mode and divisor */ - sdr_set_field(MSDC_CFG, MSDC_CFG_CKMOD, mode); - sdr_set_field(MSDC_CFG, MSDC_CFG_CKDIV, div); - - /* wait clock stable */ - while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB)); - - host->sclk = sclk; - host->mclk = hz; - msdc_set_timeout(host, host->timeout_ns, host->timeout_clks); // need? - - INIT_MSG("================"); - INIT_MSG("!!! Set<%dKHz> Source<%dKHz> -> sclk<%dKHz>", hz/1000, hclk/1000, sclk/1000); - INIT_MSG("================"); - - msdc_irq_restore(flags); -} - -/* Fix me. when need to abort */ -static void msdc_abort_data(struct msdc_host *host) -{ - u32 base = host->base; - struct mmc_command *stop = host->mrq->stop; - - ERR_MSG("Need to Abort. dma<%d>", host->dma_xfer); - - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - - // need to check FIFO count 0 ? - - if (stop) { /* try to stop, but may not success */ - ERR_MSG("stop when abort CMD<%d>", stop->opcode); - (void)msdc_do_command(host, stop, 0, CMD_TIMEOUT); - } - - //if (host->mclk >= 25000000) { - // msdc_set_mclk(host, 0, host->mclk >> 1); - //} -} - -#if 0 /* --- by chhung */ -static void msdc_pin_config(struct msdc_host *host, int mode) -{ - struct msdc_hw *hw = host->hw; - u32 base = host->base; - int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN; - - /* Config WP pin */ - if (hw->flags & MSDC_WP_PIN_EN) { - if (hw->config_gpio_pin) /* NULL */ - hw->config_gpio_pin(MSDC_WP_PIN, pull); - } - - switch (mode) { - case MSDC_PIN_PULL_UP: - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 1); /* Check & FIXME */ - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */ - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 1); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 1); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0); - break; - case MSDC_PIN_PULL_DOWN: - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */ - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 1); /* Check & FIXME */ - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 1); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 1); - break; - case MSDC_PIN_PULL_NONE: - default: - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */ - //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */ - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0); - break; - } - - N_MSG(CFG, "Pins mode(%d), down(%d), up(%d)", - mode, MSDC_PIN_PULL_DOWN, MSDC_PIN_PULL_UP); -} - -void msdc_pin_reset(struct msdc_host *host, int mode) -{ - struct msdc_hw *hw = (struct msdc_hw *)host->hw; - u32 base = host->base; - int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN; - - /* Config reset pin */ - if (hw->flags & MSDC_RST_PIN_EN) { - if (hw->config_gpio_pin) /* NULL */ - hw->config_gpio_pin(MSDC_RST_PIN, pull); - - if (mode == MSDC_PIN_PULL_UP) { - sdr_clr_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST); - } else { - sdr_set_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST); - } - } -} - -static void msdc_core_power(struct msdc_host *host, int on) -{ - N_MSG(CFG, "Turn %s %s power (copower: %d -> %d)", - on ? "on" : "off", "core", host->core_power, on); - - if (on && host->core_power == 0) { - msdc_vcore_on(host); - host->core_power = 1; - msleep(1); - } else if (!on && host->core_power == 1) { - msdc_vcore_off(host); - host->core_power = 0; - msleep(1); - } -} - -static void msdc_host_power(struct msdc_host *host, int on) -{ - N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "host"); - - if (on) { - //msdc_core_power(host, 1); // need do card detection. - msdc_pin_reset(host, MSDC_PIN_PULL_UP); - } else { - msdc_pin_reset(host, MSDC_PIN_PULL_DOWN); - //msdc_core_power(host, 0); - } -} - -static void msdc_card_power(struct msdc_host *host, int on) -{ - N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "card"); - - if (on) { - msdc_pin_config(host, MSDC_PIN_PULL_UP); - if (host->hw->ext_power_on) { - host->hw->ext_power_on(); - } else { - //msdc_vdd_on(host); // need todo card detection. - } - msleep(1); - } else { - if (host->hw->ext_power_off) { - host->hw->ext_power_off(); - } else { - //msdc_vdd_off(host); - } - msdc_pin_config(host, MSDC_PIN_PULL_DOWN); - msleep(1); - } -} - -static void msdc_set_power_mode(struct msdc_host *host, u8 mode) -{ - N_MSG(CFG, "Set power mode(%d)", mode); - - if (host->power_mode == MMC_POWER_OFF && mode != MMC_POWER_OFF) { - msdc_host_power(host, 1); - msdc_card_power(host, 1); - } else if (host->power_mode != MMC_POWER_OFF && mode == MMC_POWER_OFF) { - msdc_card_power(host, 0); - msdc_host_power(host, 0); - } - host->power_mode = mode; -} -#endif /* end of --- */ - -#ifdef CONFIG_PM -/* - register as callback function of WIFI(combo_sdio_register_pm) . - can called by msdc_drv_suspend/resume too. -*/ -static void msdc_pm(pm_message_t state, void *data) -{ - struct msdc_host *host = (struct msdc_host *)data; - int evt = state.event; - - if (evt == PM_EVENT_USER_RESUME || evt == PM_EVENT_USER_SUSPEND) { - INIT_MSG("USR_%s: suspend<%d> power<%d>", - evt == PM_EVENT_USER_RESUME ? "EVENT_USER_RESUME" : "EVENT_USER_SUSPEND", - host->suspend, host->power_mode); - } - - if (evt == PM_EVENT_SUSPEND || evt == PM_EVENT_USER_SUSPEND) { - if (host->suspend) /* already suspend */ /* default 0*/ - return; - - /* for memory card. already power off by mmc */ - if (evt == PM_EVENT_SUSPEND && host->power_mode == MMC_POWER_OFF) - return; - - host->suspend = 1; - host->pm_state = state; /* default PMSG_RESUME */ - - INIT_MSG("%s Suspend", evt == PM_EVENT_SUSPEND ? "PM" : "USR"); - if(host->hw->flags & MSDC_SYS_SUSPEND) /* set for card */ - (void)mmc_suspend_host(host->mmc); - else { - // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* just for double confirm */ /* --- by chhung */ - mmc_remove_host(host->mmc); - } - } else if (evt == PM_EVENT_RESUME || evt == PM_EVENT_USER_RESUME) { - if (!host->suspend){ - //ERR_MSG("warning: already resume"); - return; - } - - /* No PM resume when USR suspend */ - if (evt == PM_EVENT_RESUME && host->pm_state.event == PM_EVENT_USER_SUSPEND) { - ERR_MSG("PM Resume when in USR Suspend"); /* won't happen. */ - return; - } - - host->suspend = 0; - host->pm_state = state; - - INIT_MSG("%s Resume", evt == PM_EVENT_RESUME ? "PM" : "USR"); - if(host->hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */ - (void)mmc_resume_host(host->mmc); - } - else { - // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* --- by chhung */ - mmc_add_host(host->mmc); - } - } -} -#endif - -/*--------------------------------------------------------------------------*/ -/* mmc_host_ops members */ -/*--------------------------------------------------------------------------*/ -static unsigned int msdc_command_start(struct msdc_host *host, - struct mmc_command *cmd, - int tune, /* not used */ - unsigned long timeout) -{ - u32 base = host->base; - u32 opcode = cmd->opcode; - u32 rawcmd; - u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | - MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | - MSDC_INT_ACMD19_DONE; - - u32 resp; - unsigned long tmo; - - /* Protocol layer does not provide response type, but our hardware needs - * to know exact type, not just size! - */ - if (opcode == MMC_SEND_OP_COND || opcode == SD_APP_OP_COND) - resp = RESP_R3; - else if (opcode == MMC_SET_RELATIVE_ADDR || opcode == SD_SEND_RELATIVE_ADDR) - resp = (mmc_cmd_type(cmd) == MMC_CMD_BCR) ? RESP_R6 : RESP_R1; - else if (opcode == MMC_FAST_IO) - resp = RESP_R4; - else if (opcode == MMC_GO_IRQ_STATE) - resp = RESP_R5; - else if (opcode == MMC_SELECT_CARD) - resp = (cmd->arg != 0) ? RESP_R1B : RESP_NONE; - else if (opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED) - resp = RESP_R1; /* SDIO workaround. */ - else if (opcode == SD_SEND_IF_COND && (mmc_cmd_type(cmd) == MMC_CMD_BCR)) - resp = RESP_R1; - else { - switch (mmc_resp_type(cmd)) { - case MMC_RSP_R1: - resp = RESP_R1; - break; - case MMC_RSP_R1B: - resp = RESP_R1B; - break; - case MMC_RSP_R2: - resp = RESP_R2; - break; - case MMC_RSP_R3: - resp = RESP_R3; - break; - case MMC_RSP_NONE: - default: - resp = RESP_NONE; - break; - } - } - - cmd->error = 0; - /* rawcmd : - * vol_swt << 30 | auto_cmd << 28 | blklen << 16 | go_irq << 15 | - * stop << 14 | rw << 13 | dtype << 11 | rsptyp << 7 | brk << 6 | opcode - */ - rawcmd = opcode | msdc_rsp[resp] << 7 | host->blksz << 16; - - if (opcode == MMC_READ_MULTIPLE_BLOCK) { - rawcmd |= (2 << 11); - } else if (opcode == MMC_READ_SINGLE_BLOCK) { - rawcmd |= (1 << 11); - } else if (opcode == MMC_WRITE_MULTIPLE_BLOCK) { - rawcmd |= ((2 << 11) | (1 << 13)); - } else if (opcode == MMC_WRITE_BLOCK) { - rawcmd |= ((1 << 11) | (1 << 13)); - } else if (opcode == SD_IO_RW_EXTENDED) { - if (cmd->data->flags & MMC_DATA_WRITE) - rawcmd |= (1 << 13); - if (cmd->data->blocks > 1) - rawcmd |= (2 << 11); - else - rawcmd |= (1 << 11); - } else if (opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int)-1) { - rawcmd |= (1 << 14); - } else if ((opcode == SD_APP_SEND_SCR) || - (opcode == SD_APP_SEND_NUM_WR_BLKS) || - (opcode == SD_SWITCH && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) || - (opcode == SD_APP_SD_STATUS && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) || - (opcode == MMC_SEND_EXT_CSD && (mmc_cmd_type(cmd) == MMC_CMD_ADTC))) { - rawcmd |= (1 << 11); - } else if (opcode == MMC_STOP_TRANSMISSION) { - rawcmd |= (1 << 14); - rawcmd &= ~(0x0FFF << 16); - } - - N_MSG(CMD, "CMD<%d><0x%.8x> Arg<0x%.8x>", opcode , rawcmd, cmd->arg); - - tmo = jiffies + timeout; - - if (opcode == MMC_SEND_STATUS) { - for (;;) { - if (!sdc_is_cmd_busy()) - break; - - if (time_after(jiffies, tmo)) { - ERR_MSG("XXX cmd_busy timeout: before CMD<%d>", opcode); - cmd->error = (unsigned int)-ETIMEDOUT; - msdc_reset(); - goto end; - } - } - }else { - for (;;) { - if (!sdc_is_busy()) - break; - if (time_after(jiffies, tmo)) { - ERR_MSG("XXX sdc_busy timeout: before CMD<%d>", opcode); - cmd->error = (unsigned int)-ETIMEDOUT; - msdc_reset(); - goto end; - } - } - } - - //BUG_ON(in_interrupt()); - host->cmd = cmd; - host->cmd_rsp = resp; - - init_completion(&host->cmd_done); - - sdr_set_bits(MSDC_INTEN, wints); - sdc_send_cmd(rawcmd, cmd->arg); - -end: - return cmd->error; -} - -static unsigned int msdc_command_resp(struct msdc_host *host, - struct mmc_command *cmd, - int tune, - unsigned long timeout) -{ - u32 base = host->base; - u32 opcode = cmd->opcode; - //u32 rawcmd; - u32 resp; - u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | - MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | - MSDC_INT_ACMD19_DONE; - - resp = host->cmd_rsp; - - BUG_ON(in_interrupt()); - //init_completion(&host->cmd_done); - //sdr_set_bits(MSDC_INTEN, wints); - - spin_unlock(&host->lock); - if(!wait_for_completion_timeout(&host->cmd_done, 10*timeout)){ - ERR_MSG("XXX CMD<%d> wait_for_completion timeout ARG<0x%.8x>", opcode, cmd->arg); - cmd->error = (unsigned int)-ETIMEDOUT; - msdc_reset(); - } - spin_lock(&host->lock); - - sdr_clr_bits(MSDC_INTEN, wints); - host->cmd = NULL; - -//end: -#ifdef MT6575_SD_DEBUG - switch (resp) { - case RESP_NONE: - N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)", opcode, cmd->error, resp); - break; - case RESP_R2: - N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= %.8x %.8x %.8x %.8x", - opcode, cmd->error, resp, cmd->resp[0], cmd->resp[1], - cmd->resp[2], cmd->resp[3]); - break; - default: /* Response types 1, 3, 4, 5, 6, 7(1b) */ - N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= 0x%.8x", - opcode, cmd->error, resp, cmd->resp[0]); - if (cmd->error == 0) { - switch (resp) { - case RESP_R1: - case RESP_R1B: - msdc_dump_card_status(host, cmd->resp[0]); - break; - case RESP_R3: - msdc_dump_ocr_reg(host, cmd->resp[0]); - break; - case RESP_R5: - msdc_dump_io_resp(host, cmd->resp[0]); - break; - case RESP_R6: - msdc_dump_rca_resp(host, cmd->resp[0]); - break; - } - } - break; - } -#endif - - /* do we need to save card's RCA when SD_SEND_RELATIVE_ADDR */ - - if (!tune) { - return cmd->error; - } - - /* memory card CRC */ - if(host->hw->flags & MSDC_REMOVABLE && cmd->error == (unsigned int)(-EIO) ) { - if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */ - msdc_abort_data(host); - } else { - /* do basic: reset*/ - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - } - cmd->error = msdc_tune_cmdrsp(host,cmd); - } - - // check DAT0 - /* if (resp == RESP_R1B) { - while ((sdr_read32(MSDC_PS) & 0x10000) != 0x10000); - } */ - /* CMD12 Error Handle */ - - return cmd->error; -} - -static unsigned int msdc_do_command(struct msdc_host *host, - struct mmc_command *cmd, - int tune, - unsigned long timeout) -{ - if (msdc_command_start(host, cmd, tune, timeout)) - goto end; - - if (msdc_command_resp(host, cmd, tune, timeout)) - goto end; - -end: - - N_MSG(CMD, " return<%d> resp<0x%.8x>", cmd->error, cmd->resp[0]); - return cmd->error; -} - -/* The abort condition when PIO read/write - tmo: -*/ -static int msdc_pio_abort(struct msdc_host *host, struct mmc_data *data, unsigned long tmo) -{ - int ret = 0; - u32 base = host->base; - - if (atomic_read(&host->abort)) { - ret = 1; - } - - if (time_after(jiffies, tmo)) { - data->error = (unsigned int)-ETIMEDOUT; - ERR_MSG("XXX PIO Data Timeout: CMD<%d>", host->mrq->cmd->opcode); - ret = 1; - } - - if(ret) { - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - ERR_MSG("msdc pio find abort"); - } - return ret; -} - -/* - Need to add a timeout, or WDT timeout, system reboot. -*/ -// pio mode data read/write -static int msdc_pio_read(struct msdc_host *host, struct mmc_data *data) -{ - struct scatterlist *sg = data->sg; - u32 base = host->base; - u32 num = data->sg_len; - u32 *ptr; - u8 *u8ptr; - u32 left = 0; - u32 count, size = 0; - u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; - unsigned long tmo = jiffies + DAT_TIMEOUT; - - sdr_set_bits(MSDC_INTEN, wints); - while (num) { - left = sg_dma_len(sg); - ptr = sg_virt(sg); - while (left) { - if ((left >= MSDC_FIFO_THD) && (msdc_rxfifocnt() >= MSDC_FIFO_THD)) { - count = MSDC_FIFO_THD >> 2; - do { - *ptr++ = msdc_fifo_read32(); - } while (--count); - left -= MSDC_FIFO_THD; - } else if ((left < MSDC_FIFO_THD) && msdc_rxfifocnt() >= left) { - while (left > 3) { - *ptr++ = msdc_fifo_read32(); - left -= 4; - } - - u8ptr = (u8 *)ptr; - while(left) { - * u8ptr++ = msdc_fifo_read8(); - left--; - } - } - - if (msdc_pio_abort(host, data, tmo)) { - goto end; - } - } - size += sg_dma_len(sg); - sg = sg_next(sg); num--; - } -end: - data->bytes_xfered += size; - N_MSG(FIO, " PIO Read<%d>bytes", size); - - sdr_clr_bits(MSDC_INTEN, wints); - if(data->error) ERR_MSG("read pio data->error<%d> left<%d> size<%d>", data->error, left, size); - return data->error; -} - -/* please make sure won't using PIO when size >= 512 - which means, memory card block read/write won't using pio - then don't need to handle the CMD12 when data error. -*/ -static int msdc_pio_write(struct msdc_host* host, struct mmc_data *data) -{ - u32 base = host->base; - struct scatterlist *sg = data->sg; - u32 num = data->sg_len; - u32 *ptr; - u8 *u8ptr; - u32 left; - u32 count, size = 0; - u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; - unsigned long tmo = jiffies + DAT_TIMEOUT; - - sdr_set_bits(MSDC_INTEN, wints); - while (num) { - left = sg_dma_len(sg); - ptr = sg_virt(sg); - - while (left) { - if (left >= MSDC_FIFO_SZ && msdc_txfifocnt() == 0) { - count = MSDC_FIFO_SZ >> 2; - do { - msdc_fifo_write32(*ptr); ptr++; - } while (--count); - left -= MSDC_FIFO_SZ; - } else if (left < MSDC_FIFO_SZ && msdc_txfifocnt() == 0) { - while (left > 3) { - msdc_fifo_write32(*ptr); ptr++; - left -= 4; - } - - u8ptr = (u8*)ptr; - while(left){ - msdc_fifo_write8(*u8ptr); u8ptr++; - left--; - } - } - - if (msdc_pio_abort(host, data, tmo)) { - goto end; - } - } - size += sg_dma_len(sg); - sg = sg_next(sg); num--; - } -end: - data->bytes_xfered += size; - N_MSG(FIO, " PIO Write<%d>bytes", size); - if(data->error) ERR_MSG("write pio data->error<%d>", data->error); - - sdr_clr_bits(MSDC_INTEN, wints); - return data->error; -} - -#if 0 /* --- by chhung */ -// DMA resume / start / stop -static void msdc_dma_resume(struct msdc_host *host) -{ - u32 base = host->base; - - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_RESUME, 1); - - N_MSG(DMA, "DMA resume"); -} -#endif /* end of --- */ - -static void msdc_dma_start(struct msdc_host *host) -{ - u32 base = host->base; - u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; - - sdr_set_bits(MSDC_INTEN, wints); - //dsb(); /* --- by chhung */ - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1); - - N_MSG(DMA, "DMA start"); -} - -static void msdc_dma_stop(struct msdc_host *host) -{ - u32 base = host->base; - //u32 retries=500; - u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; - - N_MSG(DMA, "DMA status: 0x%.8x",sdr_read32(MSDC_DMA_CFG)); - //while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS); - - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1); - while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS); - - //dsb(); /* --- by chhung */ - sdr_clr_bits(MSDC_INTEN, wints); /* Not just xfer_comp */ - - N_MSG(DMA, "DMA stop"); -} - -#if 0 /* --- by chhung */ -/* dump a gpd list */ -static void msdc_dma_dump(struct msdc_host *host, struct msdc_dma *dma) -{ - gpd_t *gpd = dma->gpd; - bd_t *bd = dma->bd; - bd_t *ptr; - int i = 0; - int p_to_v; - - if (dma->mode != MSDC_MODE_DMA_DESC) { - return; - } - - ERR_MSG("try to dump gpd and bd"); - - /* dump gpd */ - ERR_MSG(".gpd<0x%.8x> gpd_phy<0x%.8x>", (int)gpd, (int)dma->gpd_addr); - ERR_MSG("...hwo <%d>", gpd->hwo ); - ERR_MSG("...bdp <%d>", gpd->bdp ); - ERR_MSG("...chksum<0x%.8x>", gpd->chksum ); - //ERR_MSG("...intr <0x%.8x>", gpd->intr ); - ERR_MSG("...next <0x%.8x>", (int)gpd->next ); - ERR_MSG("...ptr <0x%.8x>", (int)gpd->ptr ); - ERR_MSG("...buflen<0x%.8x>", gpd->buflen ); - //ERR_MSG("...extlen<0x%.8x>", gpd->extlen ); - //ERR_MSG("...arg <0x%.8x>", gpd->arg ); - //ERR_MSG("...blknum<0x%.8x>", gpd->blknum ); - //ERR_MSG("...cmd <0x%.8x>", gpd->cmd ); - - /* dump bd */ - ERR_MSG(".bd<0x%.8x> bd_phy<0x%.8x> gpd_ptr<0x%.8x>", (int)bd, (int)dma->bd_addr, (int)gpd->ptr); - ptr = bd; - p_to_v = ((u32)bd - (u32)dma->bd_addr); - while (1) { - ERR_MSG(".bd[%d]", i); i++; - ERR_MSG("...eol <%d>", ptr->eol ); - ERR_MSG("...chksum<0x%.8x>", ptr->chksum ); - //ERR_MSG("...blkpad<0x%.8x>", ptr->blkpad ); - //ERR_MSG("...dwpad <0x%.8x>", ptr->dwpad ); - ERR_MSG("...next <0x%.8x>", (int)ptr->next ); - ERR_MSG("...ptr <0x%.8x>", (int)ptr->ptr ); - ERR_MSG("...buflen<0x%.8x>", (int)ptr->buflen ); - - if (ptr->eol == 1) { - break; - } - - /* find the next bd, virtual address of ptr->next */ - /* don't need to enable when use malloc */ - //BUG_ON( (ptr->next + p_to_v)!=(ptr+1) ); - //ERR_MSG(".next bd<0x%.8x><0x%.8x>", (ptr->next + p_to_v), (ptr+1)); - ptr++; - } - - ERR_MSG("dump gpd and bd finished"); -} -#endif /* end of --- */ - -/* calc checksum */ -static u8 msdc_dma_calcs(u8 *buf, u32 len) -{ - u32 i, sum = 0; - for (i = 0; i < len; i++) { - sum += buf[i]; - } - return 0xFF - (u8)sum; -} - -/* gpd bd setup + dma registers */ -static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma) -{ - u32 base = host->base; - u32 sglen = dma->sglen; - //u32 i, j, num, bdlen, arg, xfersz; - u32 j, num, bdlen; - u8 blkpad, dwpad, chksum; - struct scatterlist *sg = dma->sg; - gpd_t *gpd; - bd_t *bd; - - switch (dma->mode) { - case MSDC_MODE_DMA_BASIC: - BUG_ON(dma->xfersz > 65535); - BUG_ON(dma->sglen != 1); - sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg))); - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1); -//#if defined (CONFIG_RALINK_MT7620) - if (ralink_soc == MT762X_SOC_MT7620A) - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg)); -//#elif defined (CONFIG_RALINK_MT7621) || defined (CONFIG_RALINK_MT7628) - else - sdr_write32((volatile u32*)(RALINK_MSDC_BASE+0xa8), sg_dma_len(sg)); -//#endif - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz); - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0); - break; - case MSDC_MODE_DMA_DESC: - blkpad = (dma->flags & DMA_FLAG_PAD_BLOCK) ? 1 : 0; - dwpad = (dma->flags & DMA_FLAG_PAD_DWORD) ? 1 : 0; - chksum = (dma->flags & DMA_FLAG_EN_CHKSUM) ? 1 : 0; - - /* calculate the required number of gpd */ - num = (sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD; - BUG_ON(num !=1 ); - - gpd = dma->gpd; - bd = dma->bd; - bdlen = sglen; - - /* modify gpd*/ - //gpd->intr = 0; - gpd->hwo = 1; /* hw will clear it */ - gpd->bdp = 1; - gpd->chksum = 0; /* need to clear first. */ - gpd->chksum = (chksum ? msdc_dma_calcs((u8 *)gpd, 16) : 0); - - /* modify bd*/ - for (j = 0; j < bdlen; j++) { - msdc_init_bd(&bd[j], blkpad, dwpad, sg_dma_address(sg), sg_dma_len(sg)); - if(j == bdlen - 1) { - bd[j].eol = 1; /* the last bd */ - } else { - bd[j].eol = 0; - } - bd[j].chksum = 0; /* checksume need to clear first */ - bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0); - sg++; - } - - dma->used_gpd += 2; - dma->used_bd += bdlen; - - sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum); - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz); - sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1); - - sdr_write32(MSDC_DMA_SA, PHYSADDR((u32)dma->gpd_addr)); - break; - - default: - break; - } - - N_MSG(DMA, "DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL)); - N_MSG(DMA, "DMA_CFG = 0x%x", sdr_read32(MSDC_DMA_CFG)); - N_MSG(DMA, "DMA_SA = 0x%x", sdr_read32(MSDC_DMA_SA)); - - return 0; -} - -static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma, - struct scatterlist *sg, unsigned int sglen) -{ - BUG_ON(sglen > MAX_BD_NUM); /* not support currently */ - - dma->sg = sg; - dma->flags = DMA_FLAG_EN_CHKSUM; - //dma->flags = DMA_FLAG_NONE; /* CHECKME */ - dma->sglen = sglen; - dma->xfersz = host->xfer_size; - dma->burstsz = MSDC_BRUST_64B; - - if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT) - dma->mode = MSDC_MODE_DMA_BASIC; - else - dma->mode = MSDC_MODE_DMA_DESC; - - N_MSG(DMA, "DMA mode<%d> sglen<%d> xfersz<%d>", dma->mode, dma->sglen, dma->xfersz); - - msdc_dma_config(host, dma); - - /*if (dma->mode == MSDC_MODE_DMA_DESC) { - //msdc_dma_dump(host, dma); - } */ -} - -/* set block number before send command */ -static void msdc_set_blknum(struct msdc_host *host, u32 blknum) -{ - u32 base = host->base; - - sdr_write32(SDC_BLK_NUM, blknum); -} - -static int msdc_do_request(struct mmc_host*mmc, struct mmc_request*mrq) -{ - struct msdc_host *host = mmc_priv(mmc); - struct mmc_command *cmd; - struct mmc_data *data; - u32 base = host->base; - //u32 intsts = 0; - unsigned int left=0; - int dma = 0, read = 1, dir = DMA_FROM_DEVICE, send_type=0; - - #define SND_DAT 0 - #define SND_CMD 1 - - BUG_ON(mmc == NULL); - BUG_ON(mrq == NULL); - - host->error = 0; - atomic_set(&host->abort, 0); - - cmd = mrq->cmd; - data = mrq->cmd->data; - -#if 0 /* --- by chhung */ - //if(host->id ==1){ - N_MSG(OPS, "enable clock!"); - msdc_ungate_clock(host->id); - //} -#endif /* end of --- */ - - if (!data) { - send_type=SND_CMD; - if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) { - goto done; - } - } else { - BUG_ON(data->blksz > HOST_MAX_BLKSZ); - send_type=SND_DAT; - - data->error = 0; - read = data->flags & MMC_DATA_READ ? 1 : 0; - host->data = data; - host->xfer_size = data->blocks * data->blksz; - host->blksz = data->blksz; - - /* deside the transfer mode */ - if (drv_mode[host->id] == MODE_PIO) { - host->dma_xfer = dma = 0; - } else if (drv_mode[host->id] == MODE_DMA) { - host->dma_xfer = dma = 1; - } else if (drv_mode[host->id] == MODE_SIZE_DEP) { - host->dma_xfer = dma = ((host->xfer_size >= dma_size[host->id]) ? 1 : 0); - } - - if (read) { - if ((host->timeout_ns != data->timeout_ns) || - (host->timeout_clks != data->timeout_clks)) { - msdc_set_timeout(host, data->timeout_ns, data->timeout_clks); - } - } - - msdc_set_blknum(host, data->blocks); - //msdc_clr_fifo(); /* no need */ - - if (dma) { - msdc_dma_on(); /* enable DMA mode first!! */ - init_completion(&host->xfer_done); - - /* start the command first*/ - if (msdc_command_start(host, cmd, 1, CMD_TIMEOUT) != 0) - goto done; - - dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - (void)dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, dir); - msdc_dma_setup(host, &host->dma, data->sg, data->sg_len); - - /* then wait command done */ - if (msdc_command_resp(host, cmd, 1, CMD_TIMEOUT) != 0) - goto done; - - /* for read, the data coming too fast, then CRC error - start DMA no business with CRC. */ - //init_completion(&host->xfer_done); - msdc_dma_start(host); - - spin_unlock(&host->lock); - if(!wait_for_completion_timeout(&host->xfer_done, DAT_TIMEOUT)){ - ERR_MSG("XXX CMD<%d> wait xfer_done<%d> timeout!!", cmd->opcode, data->blocks * data->blksz); - ERR_MSG(" DMA_SA = 0x%x", sdr_read32(MSDC_DMA_SA)); - ERR_MSG(" DMA_CA = 0x%x", sdr_read32(MSDC_DMA_CA)); - ERR_MSG(" DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL)); - ERR_MSG(" DMA_CFG = 0x%x", sdr_read32(MSDC_DMA_CFG)); - data->error = (unsigned int)-ETIMEDOUT; - - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - } - spin_lock(&host->lock); - msdc_dma_stop(host); - } else { - /* Firstly: send command */ - if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) { - goto done; - } - - /* Secondly: pio data phase */ - if (read) { - if (msdc_pio_read(host, data)){ - goto done; - } - } else { - if (msdc_pio_write(host, data)) { - goto done; - } - } - - /* For write case: make sure contents in fifo flushed to device */ - if (!read) { - while (1) { - left=msdc_txfifocnt(); - if (left == 0) { - break; - } - if (msdc_pio_abort(host, data, jiffies + DAT_TIMEOUT)) { - break; - /* Fix me: what about if data error, when stop ? how to? */ - } - } - } else { - /* Fix me: read case: need to check CRC error */ - } - - /* For write case: SDCBUSY and Xfer_Comp will assert when DAT0 not busy. - For read case : SDCBUSY and Xfer_Comp will assert when last byte read out from FIFO. - */ - - /* try not to wait xfer_comp interrupt. - the next command will check SDC_BUSY. - SDC_BUSY means xfer_comp assert - */ - - } // PIO mode - - /* Last: stop transfer */ - if (data->stop){ - if (msdc_do_command(host, data->stop, 0, CMD_TIMEOUT) != 0) { - goto done; - } - } - } - -done: - if (data != NULL) { - host->data = NULL; - host->dma_xfer = 0; - if (dma != 0) { - msdc_dma_off(); - host->dma.used_bd = 0; - host->dma.used_gpd = 0; - dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir); - } - host->blksz = 0; - -#if 0 // don't stop twice! - if(host->hw->flags & MSDC_REMOVABLE && data->error) { - msdc_abort_data(host); - /* reset in IRQ, stop command has issued. -> No need */ - } -#endif - - N_MSG(OPS, "CMD<%d> data<%s %s> blksz<%d> block<%d> error<%d>",cmd->opcode, (dma? "dma":"pio"), - (read ? "read ":"write") ,data->blksz, data->blocks, data->error); - } - -#if 0 /* --- by chhung */ -#if 1 - //if(host->id==1) { - if(send_type==SND_CMD) { - if(cmd->opcode == MMC_SEND_STATUS) { - if((cmd->resp[0] & CARD_READY_FOR_DATA) ||(CARD_CURRENT_STATE(cmd->resp[0]) != 7)){ - N_MSG(OPS,"disable clock, CMD13 IDLE"); - msdc_gate_clock(host->id); - } - } else { - N_MSG(OPS,"disable clock, CMD<%d>", cmd->opcode); - msdc_gate_clock(host->id); - } - } else { - if(read) { - N_MSG(OPS,"disable clock!!! Read CMD<%d>",cmd->opcode); - msdc_gate_clock(host->id); - } - } - //} -#else - msdc_gate_clock(host->id); -#endif -#endif /* end of --- */ - - if (mrq->cmd->error) host->error = 0x001; - if (mrq->data && mrq->data->error) host->error |= 0x010; - if (mrq->stop && mrq->stop->error) host->error |= 0x100; - - //if (host->error) ERR_MSG("host->error<%d>", host->error); - - return host->error; -} - -static int msdc_app_cmd(struct mmc_host *mmc, struct msdc_host *host) -{ - struct mmc_command cmd; - struct mmc_request mrq; - u32 err; - - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_APP_CMD; -#if 0 /* bug: we meet mmc->card is null when ACMD6 */ - cmd.arg = mmc->card->rca << 16; -#else - cmd.arg = host->app_cmd_arg; -#endif - cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; - - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; cmd.mrq = &mrq; - cmd.data = NULL; - - err = msdc_do_command(host, &cmd, 0, CMD_TIMEOUT); - return err; -} - -static int msdc_tune_cmdrsp(struct msdc_host*host, struct mmc_command *cmd) -{ - int result = -1; - u32 base = host->base; - u32 rsmpl, cur_rsmpl, orig_rsmpl; - u32 rrdly, cur_rrdly = 0xffffffff, orig_rrdly; - u32 skip = 1; - - /* ==== don't support 3.0 now ==== - 1: R_SMPL[1] - 2: PAD_CMD_RESP_RXDLY[26:22] - ==========================*/ - - // save the previous tune result - sdr_get_field(MSDC_IOCON, MSDC_IOCON_RSPL, orig_rsmpl); - sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, orig_rrdly); - - rrdly = 0; - do { - for (rsmpl = 0; rsmpl < 2; rsmpl++) { - /* Lv1: R_SMPL[1] */ - cur_rsmpl = (orig_rsmpl + rsmpl) % 2; - if (skip == 1) { - skip = 0; - continue; - } - sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, cur_rsmpl); - - if (host->app_cmd) { - result = msdc_app_cmd(host->mmc, host); - if (result) { - ERR_MSG("TUNE_CMD app_cmd<%d> failed: RESP_RXDLY<%d>,R_SMPL<%d>", - host->mrq->cmd->opcode, cur_rrdly, cur_rsmpl); - continue; - } - } - result = msdc_do_command(host, cmd, 0, CMD_TIMEOUT); // not tune. - ERR_MSG("TUNE_CMD<%d> %s PAD_CMD_RESP_RXDLY[26:22]<%d> R_SMPL[1]<%d>", cmd->opcode, - (result == 0) ? "PASS" : "FAIL", cur_rrdly, cur_rsmpl); - - if (result == 0) { - return 0; - } - if (result != (unsigned int)(-EIO)) { - ERR_MSG("TUNE_CMD<%d> Error<%d> not -EIO", cmd->opcode, result); - return result; - } - - /* should be EIO */ - if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */ - msdc_abort_data(host); - } - } - - /* Lv2: PAD_CMD_RESP_RXDLY[26:22] */ - cur_rrdly = (orig_rrdly + rrdly + 1) % 32; - sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, cur_rrdly); - }while (++rrdly < 32); - - return result; -} - -/* Support SD2.0 Only */ -static int msdc_tune_bread(struct mmc_host *mmc, struct mmc_request *mrq) -{ - struct msdc_host *host = mmc_priv(mmc); - u32 base = host->base; - u32 ddr=0; - u32 dcrc=0; - u32 rxdly, cur_rxdly0, cur_rxdly1; - u32 dsmpl, cur_dsmpl, orig_dsmpl; - u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3; - u32 cur_dat4, cur_dat5, cur_dat6, cur_dat7; - u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3; - u32 orig_dat4, orig_dat5, orig_dat6, orig_dat7; - int result = -1; - u32 skip = 1; - - sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl); - - /* Tune Method 2. */ - sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1); - - rxdly = 0; - do { - for (dsmpl = 0; dsmpl < 2; dsmpl++) { - cur_dsmpl = (orig_dsmpl + dsmpl) % 2; - if (skip == 1) { - skip = 0; - continue; - } - sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl); - - if (host->app_cmd) { - result = msdc_app_cmd(host->mmc, host); - if (result) { - ERR_MSG("TUNE_BREAD app_cmd<%d> failed", host->mrq->cmd->opcode); - continue; - } - } - result = msdc_do_request(mmc,mrq); - - sdr_get_field(SDC_DCRC_STS, SDC_DCRC_STS_POS|SDC_DCRC_STS_NEG, dcrc); /* RO */ - if (!ddr) dcrc &= ~SDC_DCRC_STS_NEG; - ERR_MSG("TUNE_BREAD<%s> dcrc<0x%x> DATRDDLY0/1<0x%x><0x%x> dsmpl<0x%x>", - (result == 0 && dcrc == 0) ? "PASS" : "FAIL", dcrc, - sdr_read32(MSDC_DAT_RDDLY0), sdr_read32(MSDC_DAT_RDDLY1), cur_dsmpl); - - /* Fix me: result is 0, but dcrc is still exist */ - if (result == 0 && dcrc == 0) { - goto done; - } else { - /* there is a case: command timeout, and data phase not processed */ - if (mrq->data->error != 0 && mrq->data->error != (unsigned int)(-EIO)) { - ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>", - result, mrq->cmd->error, mrq->data->error); - goto done; - } - } - } - - cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0); - cur_rxdly1 = sdr_read32(MSDC_DAT_RDDLY1); - - /* E1 ECO. YD: Reverse */ - if (sdr_read32(MSDC_ECO_VER) >= 4) { - orig_dat0 = (cur_rxdly0 >> 24) & 0x1F; - orig_dat1 = (cur_rxdly0 >> 16) & 0x1F; - orig_dat2 = (cur_rxdly0 >> 8) & 0x1F; - orig_dat3 = (cur_rxdly0 >> 0) & 0x1F; - orig_dat4 = (cur_rxdly1 >> 24) & 0x1F; - orig_dat5 = (cur_rxdly1 >> 16) & 0x1F; - orig_dat6 = (cur_rxdly1 >> 8) & 0x1F; - orig_dat7 = (cur_rxdly1 >> 0) & 0x1F; - } else { - orig_dat0 = (cur_rxdly0 >> 0) & 0x1F; - orig_dat1 = (cur_rxdly0 >> 8) & 0x1F; - orig_dat2 = (cur_rxdly0 >> 16) & 0x1F; - orig_dat3 = (cur_rxdly0 >> 24) & 0x1F; - orig_dat4 = (cur_rxdly1 >> 0) & 0x1F; - orig_dat5 = (cur_rxdly1 >> 8) & 0x1F; - orig_dat6 = (cur_rxdly1 >> 16) & 0x1F; - orig_dat7 = (cur_rxdly1 >> 24) & 0x1F; - } - - if (ddr) { - cur_dat0 = (dcrc & (1 << 0) || dcrc & (1 << 8)) ? ((orig_dat0 + 1) % 32) : orig_dat0; - cur_dat1 = (dcrc & (1 << 1) || dcrc & (1 << 9)) ? ((orig_dat1 + 1) % 32) : orig_dat1; - cur_dat2 = (dcrc & (1 << 2) || dcrc & (1 << 10)) ? ((orig_dat2 + 1) % 32) : orig_dat2; - cur_dat3 = (dcrc & (1 << 3) || dcrc & (1 << 11)) ? ((orig_dat3 + 1) % 32) : orig_dat3; - } else { - cur_dat0 = (dcrc & (1 << 0)) ? ((orig_dat0 + 1) % 32) : orig_dat0; - cur_dat1 = (dcrc & (1 << 1)) ? ((orig_dat1 + 1) % 32) : orig_dat1; - cur_dat2 = (dcrc & (1 << 2)) ? ((orig_dat2 + 1) % 32) : orig_dat2; - cur_dat3 = (dcrc & (1 << 3)) ? ((orig_dat3 + 1) % 32) : orig_dat3; - } - cur_dat4 = (dcrc & (1 << 4)) ? ((orig_dat4 + 1) % 32) : orig_dat4; - cur_dat5 = (dcrc & (1 << 5)) ? ((orig_dat5 + 1) % 32) : orig_dat5; - cur_dat6 = (dcrc & (1 << 6)) ? ((orig_dat6 + 1) % 32) : orig_dat6; - cur_dat7 = (dcrc & (1 << 7)) ? ((orig_dat7 + 1) % 32) : orig_dat7; - - cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0); - cur_rxdly1 = (cur_dat4 << 24) | (cur_dat5 << 16) | (cur_dat6 << 8) | (cur_dat7 << 0); - - sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0); - sdr_write32(MSDC_DAT_RDDLY1, cur_rxdly1); - - } while (++rxdly < 32); - -done: - return result; -} - -static int msdc_tune_bwrite(struct mmc_host *mmc,struct mmc_request *mrq) -{ - struct msdc_host *host = mmc_priv(mmc); - u32 base = host->base; - - u32 wrrdly, cur_wrrdly = 0xffffffff, orig_wrrdly; - u32 dsmpl, cur_dsmpl, orig_dsmpl; - u32 rxdly, cur_rxdly0; - u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3; - u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3; - int result = -1; - u32 skip = 1; - - // MSDC_IOCON_DDR50CKD need to check. [Fix me] - - sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, orig_wrrdly); - sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl ); - - /* Tune Method 2. just DAT0 */ - sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1); - cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0); - - /* E1 ECO. YD: Reverse */ - if (sdr_read32(MSDC_ECO_VER) >= 4) { - orig_dat0 = (cur_rxdly0 >> 24) & 0x1F; - orig_dat1 = (cur_rxdly0 >> 16) & 0x1F; - orig_dat2 = (cur_rxdly0 >> 8) & 0x1F; - orig_dat3 = (cur_rxdly0 >> 0) & 0x1F; - } else { - orig_dat0 = (cur_rxdly0 >> 0) & 0x1F; - orig_dat1 = (cur_rxdly0 >> 8) & 0x1F; - orig_dat2 = (cur_rxdly0 >> 16) & 0x1F; - orig_dat3 = (cur_rxdly0 >> 24) & 0x1F; - } - - rxdly = 0; - do { - wrrdly = 0; - do { - for (dsmpl = 0; dsmpl < 2; dsmpl++) { - cur_dsmpl = (orig_dsmpl + dsmpl) % 2; - if (skip == 1) { - skip = 0; - continue; - } - sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl); - - if (host->app_cmd) { - result = msdc_app_cmd(host->mmc, host); - if (result) { - ERR_MSG("TUNE_BWRITE app_cmd<%d> failed", host->mrq->cmd->opcode); - continue; - } - } - result = msdc_do_request(mmc,mrq); - - ERR_MSG("TUNE_BWRITE<%s> DSPL<%d> DATWRDLY<%d> MSDC_DAT_RDDLY0<0x%x>", - result == 0 ? "PASS" : "FAIL", - cur_dsmpl, cur_wrrdly, cur_rxdly0); - - if (result == 0) { - goto done; - } - else { - /* there is a case: command timeout, and data phase not processed */ - if (mrq->data->error != (unsigned int)(-EIO)) { - ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>", - result, mrq->cmd->error, mrq->data->error); - goto done; - } - } - } - cur_wrrdly = (orig_wrrdly + wrrdly + 1) % 32; - sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, cur_wrrdly); - } while (++wrrdly < 32); - - cur_dat0 = (orig_dat0 + rxdly) % 32; /* only adjust bit-1 for crc */ - cur_dat1 = orig_dat1; - cur_dat2 = orig_dat2; - cur_dat3 = orig_dat3; - - cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0); - sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0); - } while (++rxdly < 32); - -done: - return result; -} - -static int msdc_get_card_status(struct mmc_host *mmc, struct msdc_host *host, u32 *status) -{ - struct mmc_command cmd; - struct mmc_request mrq; - u32 err; - - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SEND_STATUS; - if (mmc->card) { - cmd.arg = mmc->card->rca << 16; - } else { - ERR_MSG("cmd13 mmc card is null"); - cmd.arg = host->app_cmd_arg; - } - cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; - - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; cmd.mrq = &mrq; - cmd.data = NULL; - - err = msdc_do_command(host, &cmd, 1, CMD_TIMEOUT); - - if (status) { - *status = cmd.resp[0]; - } - - return err; -} - -static int msdc_check_busy(struct mmc_host *mmc, struct msdc_host *host) -{ - u32 err = 0; - u32 status = 0; - - do { - err = msdc_get_card_status(mmc, host, &status); - if (err) return err; - /* need cmd12? */ - ERR_MSG("cmd<13> resp<0x%x>", status); - } while (R1_CURRENT_STATE(status) == 7); - - return err; -} - -/* failed when msdc_do_request */ -static int msdc_tune_request(struct mmc_host *mmc, struct mmc_request *mrq) -{ - struct msdc_host *host = mmc_priv(mmc); - struct mmc_command *cmd; - struct mmc_data *data; - //u32 base = host->base; - int ret=0, read; - - cmd = mrq->cmd; - data = mrq->cmd->data; - - read = data->flags & MMC_DATA_READ ? 1 : 0; - - if (read) { - if (data->error == (unsigned int)(-EIO)) { - ret = msdc_tune_bread(mmc,mrq); - } - } else { - ret = msdc_check_busy(mmc, host); - if (ret){ - ERR_MSG("XXX cmd13 wait program done failed"); - return ret; - } - /* CRC and TO */ - /* Fix me: don't care card status? */ - ret = msdc_tune_bwrite(mmc,mrq); - } - - return ret; -} - -/* ops.request */ -static void msdc_ops_request(struct mmc_host *mmc,struct mmc_request *mrq) -{ - struct msdc_host *host = mmc_priv(mmc); - - //=== for sdio profile === -#if 0 /* --- by chhung */ - u32 old_H32, old_L32, new_H32, new_L32; - u32 ticks = 0, opcode = 0, sizes = 0, bRx = 0; -#endif /* end of --- */ - - if(host->mrq){ - ERR_MSG("XXX host->mrq<0x%.8x>", (int)host->mrq); - BUG(); - } - - if (!is_card_present(host) || host->power_mode == MMC_POWER_OFF) { - ERR_MSG("cmd<%d> card<%d> power<%d>", mrq->cmd->opcode, is_card_present(host), host->power_mode); - mrq->cmd->error = (unsigned int)-ENOMEDIUM; - -#if 1 - mrq->done(mrq); // call done directly. -#else - mrq->cmd->retries = 0; // please don't retry. - mmc_request_done(mmc, mrq); -#endif - - return; - } - - /* start to process */ - spin_lock(&host->lock); -#if 0 /* --- by chhung */ - if (sdio_pro_enable) { //=== for sdio profile === - if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) { - GPT_GetCounter64(&old_L32, &old_H32); - } - } -#endif /* end of --- */ - - host->mrq = mrq; - - if (msdc_do_request(mmc,mrq)) { - if(host->hw->flags & MSDC_REMOVABLE && ralink_soc == MT762X_SOC_MT7621AT && mrq->data && mrq->data->error) { - msdc_tune_request(mmc,mrq); - } - } - - /* ==== when request done, check if app_cmd ==== */ - if (mrq->cmd->opcode == MMC_APP_CMD) { - host->app_cmd = 1; - host->app_cmd_arg = mrq->cmd->arg; /* save the RCA */ - } else { - host->app_cmd = 0; - //host->app_cmd_arg = 0; - } - - host->mrq = NULL; - -#if 0 /* --- by chhung */ - //=== for sdio profile === - if (sdio_pro_enable) { - if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) { - GPT_GetCounter64(&new_L32, &new_H32); - ticks = msdc_time_calc(old_L32, old_H32, new_L32, new_H32); - - opcode = mrq->cmd->opcode; - if (mrq->cmd->data) { - sizes = mrq->cmd->data->blocks * mrq->cmd->data->blksz; - bRx = mrq->cmd->data->flags & MMC_DATA_READ ? 1 : 0 ; - } else { - bRx = mrq->cmd->arg & 0x80000000 ? 1 : 0; - } - - if (!mrq->cmd->error) { - msdc_performance(opcode, sizes, bRx, ticks); - } - } - } -#endif /* end of --- */ - spin_unlock(&host->lock); - - mmc_request_done(mmc, mrq); - - return; -} - -/* called by ops.set_ios */ -static void msdc_set_buswidth(struct msdc_host *host, u32 width) -{ - u32 base = host->base; - u32 val = sdr_read32(SDC_CFG); - - val &= ~SDC_CFG_BUSWIDTH; - - switch (width) { - default: - case MMC_BUS_WIDTH_1: - width = 1; - val |= (MSDC_BUS_1BITS << 16); - break; - case MMC_BUS_WIDTH_4: - val |= (MSDC_BUS_4BITS << 16); - break; - case MMC_BUS_WIDTH_8: - val |= (MSDC_BUS_8BITS << 16); - break; - } - - sdr_write32(SDC_CFG, val); - - N_MSG(CFG, "Bus Width = %d", width); -} - -/* ops.set_ios */ -static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -{ - struct msdc_host *host = mmc_priv(mmc); - struct msdc_hw *hw=host->hw; - u32 base = host->base; - u32 ddr = 0; - -#ifdef MT6575_SD_DEBUG - static char *vdd[] = { - "1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v", - "2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v", - "2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v", - "3.40v", "3.50v", "3.60v" - }; - static char *power_mode[] = { - "OFF", "UP", "ON" - }; - static char *bus_mode[] = { - "UNKNOWN", "OPENDRAIN", "PUSHPULL" - }; - static char *timing[] = { - "LEGACY", "MMC_HS", "SD_HS" - }; - - printk("SET_IOS: CLK(%dkHz), BUS(%s), BW(%u), PWR(%s), VDD(%s), TIMING(%s)", - ios->clock / 1000, bus_mode[ios->bus_mode], - (ios->bus_width == MMC_BUS_WIDTH_4) ? 4 : 1, - power_mode[ios->power_mode], vdd[ios->vdd], timing[ios->timing]); -#endif - - msdc_set_buswidth(host, ios->bus_width); - - /* Power control ??? */ - switch (ios->power_mode) { - case MMC_POWER_OFF: - case MMC_POWER_UP: - // msdc_set_power_mode(host, ios->power_mode); /* --- by chhung */ - break; - case MMC_POWER_ON: - host->power_mode = MMC_POWER_ON; - break; - default: - break; - } - - /* Clock control */ - if (host->mclk != ios->clock) { - if(ios->clock > 25000000) { - //if (!(host->hw->flags & MSDC_REMOVABLE)) { - INIT_MSG("SD data latch edge<%d>", hw->data_edge); - sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, hw->cmd_edge); - sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, hw->data_edge); - //} /* for tuning debug */ - } else { /* default value */ - sdr_write32(MSDC_IOCON, 0x00000000); - // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000); - sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward - sdr_write32(MSDC_DAT_RDDLY1, 0x00000000); - // sdr_write32(MSDC_PAD_TUNE, 0x00000000); - sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward - } - msdc_set_mclk(host, ddr, ios->clock); - } -} - -/* ops.get_ro */ -static int msdc_ops_get_ro(struct mmc_host *mmc) -{ - struct msdc_host *host = mmc_priv(mmc); - u32 base = host->base; - unsigned long flags; - int ro = 0; - - if (host->hw->flags & MSDC_WP_PIN_EN) { /* set for card */ - spin_lock_irqsave(&host->lock, flags); - ro = (sdr_read32(MSDC_PS) >> 31); - spin_unlock_irqrestore(&host->lock, flags); - } - return ro; -} - -/* ops.get_cd */ -static int msdc_ops_get_cd(struct mmc_host *mmc) -{ - struct msdc_host *host = mmc_priv(mmc); - u32 base = host->base; - unsigned long flags; - int present = 1; - - /* for sdio, MSDC_REMOVABLE not set, always return 1 */ - if (!(host->hw->flags & MSDC_REMOVABLE)) { - /* For sdio, read H/W always get<1>, but may timeout some times */ -#if 1 - host->card_inserted = 1; - return 1; -#else - host->card_inserted = (host->pm_state.event == PM_EVENT_USER_RESUME) ? 1 : 0; - INIT_MSG("sdio ops_get_cd<%d>", host->card_inserted); - return host->card_inserted; -#endif - } - - /* MSDC_CD_PIN_EN set for card */ - if (host->hw->flags & MSDC_CD_PIN_EN) { - spin_lock_irqsave(&host->lock, flags); -#if 0 - present = host->card_inserted; /* why not read from H/W: Fix me*/ -#else - // CD - if (cd_active_low) - present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1; - else - present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 1 : 0; - if (host->mmc->caps & MMC_CAP_NEEDS_POLL) - present = 1; - host->card_inserted = present; -#endif - spin_unlock_irqrestore(&host->lock, flags); - } else { - present = 0; /* TODO? Check DAT3 pins for card detection */ - } - - INIT_MSG("ops_get_cd return<%d>", present); - return present; -} - -/* ops.enable_sdio_irq */ -static void msdc_ops_enable_sdio_irq(struct mmc_host *mmc, int enable) -{ - struct msdc_host *host = mmc_priv(mmc); - struct msdc_hw *hw = host->hw; - u32 base = host->base; - u32 tmp; - - if (hw->flags & MSDC_EXT_SDIO_IRQ) { /* yes for sdio */ - if (enable) { - hw->enable_sdio_eirq(); /* combo_sdio_enable_eirq */ - } else { - hw->disable_sdio_eirq(); /* combo_sdio_disable_eirq */ - } - } else { - ERR_MSG("XXX "); /* so never enter here */ - tmp = sdr_read32(SDC_CFG); - /* FIXME. Need to interrupt gap detection */ - if (enable) { - tmp |= (SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP); - } else { - tmp &= ~(SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP); - } - sdr_write32(SDC_CFG, tmp); - } -} - -static struct mmc_host_ops mt_msdc_ops = { - .request = msdc_ops_request, - .set_ios = msdc_ops_set_ios, - .get_ro = msdc_ops_get_ro, - .get_cd = msdc_ops_get_cd, - .enable_sdio_irq = msdc_ops_enable_sdio_irq, -}; - -/*--------------------------------------------------------------------------*/ -/* interrupt handler */ -/*--------------------------------------------------------------------------*/ -static irqreturn_t msdc_irq(int irq, void *dev_id) -{ - struct msdc_host *host = (struct msdc_host *)dev_id; - struct mmc_data *data = host->data; - struct mmc_command *cmd = host->cmd; - u32 base = host->base; - - u32 cmdsts = MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | MSDC_INT_CMDRDY | - MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | MSDC_INT_ACMDRDY | - MSDC_INT_ACMD19_DONE; - u32 datsts = MSDC_INT_DATCRCERR |MSDC_INT_DATTMO; - - u32 intsts = sdr_read32(MSDC_INT); - u32 inten = sdr_read32(MSDC_INTEN); inten &= intsts; - - sdr_write32(MSDC_INT, intsts); /* clear interrupts */ - /* MSG will cause fatal error */ - - /* card change interrupt */ - if (intsts & MSDC_INT_CDSC){ - if (mtk_sw_poll) - return IRQ_HANDLED; - IRQ_MSG("MSDC_INT_CDSC irq<0x%.8x>", intsts); -#if 0 /* ---/+++ by chhung: fix slot mechanical bounce issue */ - tasklet_hi_schedule(&host->card_tasklet); -#else - schedule_delayed_work(&host->card_delaywork, HZ); -#endif - /* tuning when plug card ? */ - } - - /* sdio interrupt */ - if (intsts & MSDC_INT_SDIOIRQ){ - IRQ_MSG("XXX MSDC_INT_SDIOIRQ"); /* seems not sdio irq */ - //mmc_signal_sdio_irq(host->mmc); - } - - /* transfer complete interrupt */ - if (data != NULL) { - if (inten & MSDC_INT_XFER_COMPL) { - data->bytes_xfered = host->dma.xfersz; - complete(&host->xfer_done); - } - - if (intsts & datsts) { - /* do basic reset, or stop command will sdc_busy */ - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - atomic_set(&host->abort, 1); /* For PIO mode exit */ - - if (intsts & MSDC_INT_DATTMO){ - IRQ_MSG("XXX CMD<%d> MSDC_INT_DATTMO", host->mrq->cmd->opcode); - data->error = (unsigned int)-ETIMEDOUT; - } - else if (intsts & MSDC_INT_DATCRCERR){ - IRQ_MSG("XXX CMD<%d> MSDC_INT_DATCRCERR, SDC_DCRC_STS<0x%x>", host->mrq->cmd->opcode, sdr_read32(SDC_DCRC_STS)); - data->error = (unsigned int)-EIO; - } - - //if(sdr_read32(MSDC_INTEN) & MSDC_INT_XFER_COMPL) { - if (host->dma_xfer) { - complete(&host->xfer_done); /* Read CRC come fast, XFER_COMPL not enabled */ - } /* PIO mode can't do complete, because not init */ - } - } - - /* command interrupts */ - if ((cmd != NULL) && (intsts & cmdsts)) { - if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) || - (intsts & MSDC_INT_ACMD19_DONE)) { - u32 *rsp = &cmd->resp[0]; - - switch (host->cmd_rsp) { - case RESP_NONE: - break; - case RESP_R2: - *rsp++ = sdr_read32(SDC_RESP3); *rsp++ = sdr_read32(SDC_RESP2); - *rsp++ = sdr_read32(SDC_RESP1); *rsp++ = sdr_read32(SDC_RESP0); - break; - default: /* Response types 1, 3, 4, 5, 6, 7(1b) */ - if ((intsts & MSDC_INT_ACMDRDY) || (intsts & MSDC_INT_ACMD19_DONE)) { - *rsp = sdr_read32(SDC_ACMD_RESP); - } else { - *rsp = sdr_read32(SDC_RESP0); - } - break; - } - } else if ((intsts & MSDC_INT_RSPCRCERR) || (intsts & MSDC_INT_ACMDCRCERR)) { - if(intsts & MSDC_INT_ACMDCRCERR){ - IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDCRCERR",cmd->opcode); - } - else { - IRQ_MSG("XXX CMD<%d> MSDC_INT_RSPCRCERR",cmd->opcode); - } - cmd->error = (unsigned int)-EIO; - } else if ((intsts & MSDC_INT_CMDTMO) || (intsts & MSDC_INT_ACMDTMO)) { - if(intsts & MSDC_INT_ACMDTMO){ - IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDTMO",cmd->opcode); - } - else { - IRQ_MSG("XXX CMD<%d> MSDC_INT_CMDTMO",cmd->opcode); - } - cmd->error = (unsigned int)-ETIMEDOUT; - msdc_reset(); - msdc_clr_fifo(); - msdc_clr_int(); - } - complete(&host->cmd_done); - } - - /* mmc irq interrupts */ - if (intsts & MSDC_INT_MMCIRQ) { - printk(KERN_INFO "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n", host->id, sdr_read32(SDC_CSTS)); - } - -#ifdef MT6575_SD_DEBUG - { - msdc_int_reg *int_reg = (msdc_int_reg*)&intsts; - N_MSG(INT, "IRQ_EVT(0x%x): MMCIRQ(%d) CDSC(%d), ACRDY(%d), ACTMO(%d), ACCRE(%d) AC19DN(%d)", - intsts, - int_reg->mmcirq, - int_reg->cdsc, - int_reg->atocmdrdy, - int_reg->atocmdtmo, - int_reg->atocmdcrc, - int_reg->atocmd19done); - N_MSG(INT, "IRQ_EVT(0x%x): SDIO(%d) CMDRDY(%d), CMDTMO(%d), RSPCRC(%d), CSTA(%d)", - intsts, - int_reg->sdioirq, - int_reg->cmdrdy, - int_reg->cmdtmo, - int_reg->rspcrc, - int_reg->csta); - N_MSG(INT, "IRQ_EVT(0x%x): XFCMP(%d) DXDONE(%d), DATTMO(%d), DATCRC(%d), DMAEMP(%d)", - intsts, - int_reg->xfercomp, - int_reg->dxferdone, - int_reg->dattmo, - int_reg->datcrc, - int_reg->dmaqempty); - - } -#endif - - return IRQ_HANDLED; -} - -/*--------------------------------------------------------------------------*/ -/* platform_driver members */ -/*--------------------------------------------------------------------------*/ -/* called by msdc_drv_probe/remove */ -static void msdc_enable_cd_irq(struct msdc_host *host, int enable) -{ - struct msdc_hw *hw = host->hw; - u32 base = host->base; - - /* for sdio, not set */ - if ((hw->flags & MSDC_CD_PIN_EN) == 0) { - /* Pull down card detection pin since it is not avaiable */ - /* - if (hw->config_gpio_pin) - hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN); - */ - sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); - sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC); - sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP); - return; - } - - N_MSG(CFG, "CD IRQ Eanable(%d)", enable); - - if (enable) { - if (hw->enable_cd_eirq) { /* not set, never enter */ - hw->enable_cd_eirq(); - } else { - /* card detection circuit relies on the core power so that the core power - * shouldn't be turned off. Here adds a reference count to keep - * the core power alive. - */ - //msdc_vcore_on(host); //did in msdc_init_hw() - - if (hw->config_gpio_pin) /* NULL */ - hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_UP); - - sdr_set_field(MSDC_PS, MSDC_PS_CDDEBOUNCE, DEFAULT_DEBOUNCE); - sdr_set_bits(MSDC_PS, MSDC_PS_CDEN); - sdr_set_bits(MSDC_INTEN, MSDC_INTEN_CDSC); - sdr_set_bits(SDC_CFG, SDC_CFG_INSWKUP); /* not in document! Fix me */ - } - } else { - if (hw->disable_cd_eirq) { - hw->disable_cd_eirq(); - } else { - if (hw->config_gpio_pin) /* NULL */ - hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN); - - sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP); - sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); - sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC); - - /* Here decreases a reference count to core power since card - * detection circuit is shutdown. - */ - //msdc_vcore_off(host); - } - } -} - -/* called by msdc_drv_probe */ -static void msdc_init_hw(struct msdc_host *host) -{ - u32 base = host->base; - struct msdc_hw *hw = host->hw; - - /* Power on */ -#if 0 /* --- by chhung */ - msdc_vcore_on(host); - msdc_pin_reset(host, MSDC_PIN_PULL_UP); - msdc_select_clksrc(host, hw->clk_src); - enable_clock(PERI_MSDC0_PDN + host->id, "SD"); - msdc_vdd_on(host); -#endif /* end of --- */ - /* Configure to MMC/SD mode */ - sdr_set_field(MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC); - - /* Reset */ - msdc_reset(); - msdc_clr_fifo(); - - /* Disable card detection */ - sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN); - - /* Disable and clear all interrupts */ - sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN)); - sdr_write32(MSDC_INT, sdr_read32(MSDC_INT)); - -#if 1 - /* reset tuning parameter */ - sdr_write32(MSDC_PAD_CTL0, 0x00090000); - sdr_write32(MSDC_PAD_CTL1, 0x000A0000); - sdr_write32(MSDC_PAD_CTL2, 0x000A0000); - // sdr_write32(MSDC_PAD_TUNE, 0x00000000); - sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward - // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000); - sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward - sdr_write32(MSDC_DAT_RDDLY1, 0x00000000); - sdr_write32(MSDC_IOCON, 0x00000000); -#if 0 // use MT7620 default value: 0x403c004f - sdr_write32(MSDC_PATCH_BIT0, 0x003C000F); /* bit0 modified: Rx Data Clock Source: 1 -> 2.0*/ -#endif - - if (sdr_read32(MSDC_ECO_VER) >= 4) { - if (host->id == 1) { - sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_WRDAT_CRCS, 1); - sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_CMD_RSP, 1); - - /* internal clock: latch read data */ - sdr_set_bits(MSDC_PATCH_BIT0, MSDC_PATCH_BIT_CKGEN_CK); - } - } -#endif - - /* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in - pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only - set when kernel driver wants to use SDIO bus interrupt */ - /* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */ - sdr_set_bits(SDC_CFG, SDC_CFG_SDIO); - - /* disable detect SDIO device interupt function */ - sdr_clr_bits(SDC_CFG, SDC_CFG_SDIOIDE); - - /* eneable SMT for glitch filter */ - sdr_set_bits(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKSMT); - sdr_set_bits(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDSMT); - sdr_set_bits(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATSMT); - -#if 1 - /* set clk, cmd, dat pad driving */ - sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, hw->clk_drv); - sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv); -#else - sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0); - sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, 0); - sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 0); - sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 0); -#endif - - /* set sampling edge */ - - /* write crc timeout detection */ - sdr_set_field(MSDC_PATCH_BIT0, 1 << 30, 1); - - /* Configure to default data timeout */ - sdr_set_field(SDC_CFG, SDC_CFG_DTOC, DEFAULT_DTOC); - - msdc_set_buswidth(host, MMC_BUS_WIDTH_1); - - N_MSG(FUC, "init hardware done!"); -} - -/* called by msdc_drv_remove */ -static void msdc_deinit_hw(struct msdc_host *host) -{ - u32 base = host->base; - - /* Disable and clear all interrupts */ - sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN)); - sdr_write32(MSDC_INT, sdr_read32(MSDC_INT)); - - /* Disable card detection */ - msdc_enable_cd_irq(host, 0); - // msdc_set_power_mode(host, MMC_POWER_OFF); /* make sure power down */ /* --- by chhung */ -} - -/* init gpd and bd list in msdc_drv_probe */ -static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma) -{ - gpd_t *gpd = dma->gpd; - bd_t *bd = dma->bd; - bd_t *ptr, *prev; - - /* we just support one gpd */ - int bdlen = MAX_BD_PER_GPD; - - /* init the 2 gpd */ - memset(gpd, 0, sizeof(gpd_t) * 2); - //gpd->next = (void *)virt_to_phys(gpd + 1); /* pointer to a null gpd, bug! kmalloc <-> virt_to_phys */ - //gpd->next = (dma->gpd_addr + 1); /* bug */ - gpd->next = (void *)((u32)dma->gpd_addr + sizeof(gpd_t)); - - //gpd->intr = 0; - gpd->bdp = 1; /* hwo, cs, bd pointer */ - //gpd->ptr = (void*)virt_to_phys(bd); - gpd->ptr = (void *)dma->bd_addr; /* physical address */ - - memset(bd, 0, sizeof(bd_t) * bdlen); - ptr = bd + bdlen - 1; - //ptr->eol = 1; /* 0 or 1 [Fix me]*/ - //ptr->next = 0; - - while (ptr != bd) { - prev = ptr - 1; - prev->next = (void *)(dma->bd_addr + sizeof(bd_t) *(ptr - bd)); - ptr = prev; - } -} - -static int msdc_drv_probe(struct platform_device *pdev) -{ - struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - __iomem void *base; - struct mmc_host *mmc; - struct resource *mem; - struct msdc_host *host; - struct msdc_hw *hw; - int ret, irq; - - pdev->dev.platform_data = &msdc0_hw; - - if (of_property_read_bool(pdev->dev.of_node, "mtk,wp-en")) - msdc0_hw.flags |= MSDC_WP_PIN_EN; - - /* Allocate MMC host for this device */ - mmc = mmc_alloc_host(sizeof(struct msdc_host), &pdev->dev); - if (!mmc) return -ENOMEM; - - hw = (struct msdc_hw*)pdev->dev.platform_data; - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irq = platform_get_irq(pdev, 0); - - //BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */ - - base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - /* Set host parameters to mmc */ - mmc->ops = &mt_msdc_ops; - mmc->f_min = HOST_MIN_MCLK; - mmc->f_max = HOST_MAX_MCLK; - mmc->ocr_avail = MSDC_OCR_AVAIL; - - /* For sd card: MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED, - For sdio : MSDC_EXT_SDIO_IRQ | MSDC_HIGHSPEED */ - if (hw->flags & MSDC_HIGHSPEED) { - mmc->caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; - } - if (hw->data_pins == 4) { /* current data_pins are all 4*/ - mmc->caps |= MMC_CAP_4_BIT_DATA; - } else if (hw->data_pins == 8) { - mmc->caps |= MMC_CAP_8_BIT_DATA; - } - if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ)) - mmc->caps |= MMC_CAP_SDIO_IRQ; /* yes for sdio */ - - cd_active_low = !of_property_read_bool(pdev->dev.of_node, "mediatek,cd-high"); - mtk_sw_poll = of_property_read_bool(pdev->dev.of_node, "mediatek,cd-poll"); - - if (mtk_sw_poll) - mmc->caps |= MMC_CAP_NEEDS_POLL; - - /* MMC core transfer sizes tunable parameters */ -#if LINUX_VERSION_CODE > KERNEL_VERSION(3,10,0) - mmc->max_segs = MAX_HW_SGMTS; -#else - mmc->max_hw_segs = MAX_HW_SGMTS; - mmc->max_phys_segs = MAX_PHY_SGMTS; -#endif - mmc->max_seg_size = MAX_SGMT_SZ; - mmc->max_blk_size = HOST_MAX_BLKSZ; - mmc->max_req_size = MAX_REQ_SZ; - mmc->max_blk_count = mmc->max_req_size; - - host = mmc_priv(mmc); - host->hw = hw; - host->mmc = mmc; - host->id = 0; - host->error = 0; - host->irq = irq; - host->base = (unsigned long) base; - host->mclk = 0; /* mclk: the request clock of mmc sub-system */ - host->hclk = hclks[hw->clk_src]; /* hclk: clock of clock source to msdc controller */ - host->sclk = 0; /* sclk: the really clock after divition */ - host->pm_state = PMSG_RESUME; - host->suspend = 0; - host->core_clkon = 0; - host->card_clkon = 0; - host->core_power = 0; - host->power_mode = MMC_POWER_OFF; -// host->card_inserted = hw->flags & MSDC_REMOVABLE ? 0 : 1; - host->timeout_ns = 0; - host->timeout_clks = DEFAULT_DTOC * 65536; - - host->mrq = NULL; - //init_MUTEX(&host->sem); /* we don't need to support multiple threads access */ - - host->dma.used_gpd = 0; - host->dma.used_bd = 0; - mmc_dev(mmc)->dma_mask = NULL; - - /* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */ - host->dma.gpd = dma_alloc_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), &host->dma.gpd_addr, GFP_KERNEL); - host->dma.bd = dma_alloc_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), &host->dma.bd_addr, GFP_KERNEL); - BUG_ON((!host->dma.gpd) || (!host->dma.bd)); - msdc_init_gpd_bd(host, &host->dma); - -#if 0 - tasklet_init(&host->card_tasklet, msdc_tasklet_card, (ulong)host); -#else - INIT_DELAYED_WORK(&host->card_delaywork, msdc_tasklet_card); -#endif - spin_lock_init(&host->lock); - msdc_init_hw(host); - - if (ralink_soc == MT762X_SOC_MT7621AT) - ret = request_irq((unsigned int)irq, msdc_irq, 0, dev_name(&pdev->dev), host); - else - ret = request_irq((unsigned int)irq, msdc_irq, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), host); - - if (ret) goto release; - // mt65xx_irq_unmask(irq); /* --- by chhung */ - - if (hw->flags & MSDC_CD_PIN_EN) { /* not set for sdio */ - if (hw->request_cd_eirq) { /* not set for MT6575 */ - hw->request_cd_eirq(msdc_eirq_cd, (void*)host); /* msdc_eirq_cd will not be used! */ - } - } - - if (hw->request_sdio_eirq) /* set to combo_sdio_request_eirq() for WIFI */ - hw->request_sdio_eirq(msdc_eirq_sdio, (void*)host); /* msdc_eirq_sdio() will be called when EIRQ */ - - if (hw->register_pm) {/* yes for sdio */ -#ifdef CONFIG_PM - hw->register_pm(msdc_pm, (void*)host); /* combo_sdio_register_pm() */ -#endif - if(hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */ - ERR_MSG("MSDC_SYS_SUSPEND and register_pm both set"); - } - //mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* pm not controlled by system but by client. */ /* --- by chhung */ - } - - platform_set_drvdata(pdev, mmc); - - ret = mmc_add_host(mmc); - if (ret) goto free_irq; - - /* Config card detection pin and enable interrupts */ - if (hw->flags & MSDC_CD_PIN_EN) { /* set for card */ - msdc_enable_cd_irq(host, 1); - } else { - msdc_enable_cd_irq(host, 0); - } - - return 0; - -free_irq: - free_irq(irq, host); -release: - platform_set_drvdata(pdev, NULL); - msdc_deinit_hw(host); - -#if 0 - tasklet_kill(&host->card_tasklet); -#else - cancel_delayed_work_sync(&host->card_delaywork); -#endif - - if (mem) - release_mem_region(mem->start, mem->end - mem->start + 1); - - mmc_free_host(mmc); - - return ret; -} - -/* 4 device share one driver, using "drvdata" to show difference */ -static int msdc_drv_remove(struct platform_device *pdev) -{ - struct mmc_host *mmc; - struct msdc_host *host; - struct resource *mem; - - mmc = platform_get_drvdata(pdev); - BUG_ON(!mmc); - - host = mmc_priv(mmc); - BUG_ON(!host); - - ERR_MSG("removed !!!"); - - platform_set_drvdata(pdev, NULL); - mmc_remove_host(host->mmc); - msdc_deinit_hw(host); - -#if 0 - tasklet_kill(&host->card_tasklet); -#else - cancel_delayed_work_sync(&host->card_delaywork); -#endif - free_irq(host->irq, host); - - dma_free_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), host->dma.gpd, host->dma.gpd_addr); - dma_free_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), host->dma.bd, host->dma.bd_addr); - - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - if (mem) - release_mem_region(mem->start, mem->end - mem->start + 1); - - mmc_free_host(host->mmc); - - return 0; -} - -/* Fix me: Power Flow */ -#ifdef CONFIG_PM -static int msdc_drv_suspend(struct platform_device *pdev, pm_message_t state) -{ - int ret = 0; - struct mmc_host *mmc = platform_get_drvdata(pdev); - struct msdc_host *host = mmc_priv(mmc); - - if (mmc && state.event == PM_EVENT_SUSPEND && (host->hw->flags & MSDC_SYS_SUSPEND)) { /* will set for card */ - msdc_pm(state, (void*)host); - } - - return ret; -} - -static int msdc_drv_resume(struct platform_device *pdev) -{ - int ret = 0; - struct mmc_host *mmc = platform_get_drvdata(pdev); - struct msdc_host *host = mmc_priv(mmc); - struct pm_message state; - - state.event = PM_EVENT_RESUME; - if (mmc && (host->hw->flags & MSDC_SYS_SUSPEND)) {/* will set for card */ - msdc_pm(state, (void*)host); - } - - /* This mean WIFI not controller by PM */ - - return ret; -} -#endif - -static const struct of_device_id mt7620_sdhci_match[] = { - { .compatible = "ralink,mt7620-sdhci" }, - {}, -}; -MODULE_DEVICE_TABLE(of, mt7620_sdhci_match); - -static struct platform_driver mt_msdc_driver = { - .probe = msdc_drv_probe, - .remove = msdc_drv_remove, -#ifdef CONFIG_PM - .suspend = msdc_drv_suspend, - .resume = msdc_drv_resume, -#endif - .driver = { - .name = DRV_NAME, - .of_match_table = mt7620_sdhci_match, - }, -}; - -/*--------------------------------------------------------------------------*/ -/* module init/exit */ -/*--------------------------------------------------------------------------*/ -static int __init mt_msdc_init(void) -{ - int ret; -/* +++ by chhung */ - u32 reg; - -#if defined (CONFIG_MTD_ANY_RALINK) - extern int ra_check_flash_type(void); - if(ra_check_flash_type() == 2) { /* NAND */ - printk("%s: !!!!! SDXC Module Initialize Fail !!!!!", __func__); - return 0; - } -#endif - printk("MTK MSDC device init.\n"); - mtk_sd_device.dev.platform_data = &msdc0_hw; -if (ralink_soc == MT762X_SOC_MT7620A || ralink_soc == MT762X_SOC_MT7621AT) { -//#if defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) - reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<18); -//#if defined (CONFIG_RALINK_MT7620) - if (ralink_soc == MT762X_SOC_MT7620A) - reg |= 0x1<<18; -//#endif -} else { -//#elif defined (CONFIG_RALINK_MT7628) - /* TODO: maybe omitted when RAether already toggle AGPIO_CFG */ - reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c)); - reg |= 0x1e << 16; - sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c), reg); - - reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<10); -#if defined (CONFIG_MTK_MMC_EMMC_8BIT) - reg |= 0x3<<26 | 0x3<<28 | 0x3<<30; - msdc0_hw.data_pins = 8, -#endif -//#endif -} - sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60), reg); - //platform_device_register(&mtk_sd_device); -/* end of +++ */ - - ret = platform_driver_register(&mt_msdc_driver); - if (ret) { - printk(KERN_ERR DRV_NAME ": Can't register driver"); - return ret; - } - printk(KERN_INFO DRV_NAME ": MediaTek MT6575 MSDC Driver\n"); - -#if defined (MT6575_SD_DEBUG) - msdc_debug_proc_init(); -#endif - return 0; -} - -static void __exit mt_msdc_exit(void) -{ -// platform_device_unregister(&mtk_sd_device); - platform_driver_unregister(&mt_msdc_driver); -} - -module_init(mt_msdc_init); -module_exit(mt_msdc_exit); -MODULE_LICENSE("GPL"); |