1341 lines
35 KiB
C
1341 lines
35 KiB
C
/*
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* drivers/mmc/host/via-sdmmc.c - VIA SD/MMC Card Reader driver
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* Copyright (c) 2008, VIA Technologies Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <linux/dma-mapping.h>
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#include <linux/highmem.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/mmc/host.h>
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#define DRV_NAME "via_sdmmc"
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#define PCI_DEVICE_ID_VIA_9530 0x9530
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#define VIA_CRDR_SDC_OFF 0x200
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#define VIA_CRDR_DDMA_OFF 0x400
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#define VIA_CRDR_PCICTRL_OFF 0x600
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#define VIA_CRDR_MIN_CLOCK 375000
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#define VIA_CRDR_MAX_CLOCK 48000000
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/*
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* PCI registers
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*/
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#define VIA_CRDR_PCI_WORK_MODE 0x40
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#define VIA_CRDR_PCI_DBG_MODE 0x41
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/*
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* SDC MMIO Registers
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*/
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#define VIA_CRDR_SDCTRL 0x0
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#define VIA_CRDR_SDCTRL_START 0x01
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#define VIA_CRDR_SDCTRL_WRITE 0x04
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#define VIA_CRDR_SDCTRL_SINGLE_WR 0x10
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#define VIA_CRDR_SDCTRL_SINGLE_RD 0x20
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#define VIA_CRDR_SDCTRL_MULTI_WR 0x30
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#define VIA_CRDR_SDCTRL_MULTI_RD 0x40
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#define VIA_CRDR_SDCTRL_STOP 0x70
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#define VIA_CRDR_SDCTRL_RSP_NONE 0x0
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#define VIA_CRDR_SDCTRL_RSP_R1 0x10000
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#define VIA_CRDR_SDCTRL_RSP_R2 0x20000
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#define VIA_CRDR_SDCTRL_RSP_R3 0x30000
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#define VIA_CRDR_SDCTRL_RSP_R1B 0x90000
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#define VIA_CRDR_SDCARG 0x4
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#define VIA_CRDR_SDBUSMODE 0x8
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#define VIA_CRDR_SDMODE_4BIT 0x02
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#define VIA_CRDR_SDMODE_CLK_ON 0x40
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#define VIA_CRDR_SDBLKLEN 0xc
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/*
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* Bit 0 -Bit 10 : Block length. So, the maximum block length should be 2048.
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* Bit 11 - Bit 13 : Reserved.
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* GPIDET : Select GPI pin to detect card, GPI means CR_CD# in top design.
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* INTEN : Enable SD host interrupt.
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* Bit 16 - Bit 31 : Block count. So, the maximun block count should be 65536.
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*/
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#define VIA_CRDR_SDBLKLEN_GPIDET 0x2000
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#define VIA_CRDR_SDBLKLEN_INTEN 0x8000
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#define VIA_CRDR_MAX_BLOCK_COUNT 65536
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#define VIA_CRDR_MAX_BLOCK_LENGTH 2048
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#define VIA_CRDR_SDRESP0 0x10
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#define VIA_CRDR_SDRESP1 0x14
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#define VIA_CRDR_SDRESP2 0x18
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#define VIA_CRDR_SDRESP3 0x1c
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#define VIA_CRDR_SDCURBLKCNT 0x20
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#define VIA_CRDR_SDINTMASK 0x24
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/*
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* MBDIE : Multiple Blocks transfer Done Interrupt Enable
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* BDDIE : Block Data transfer Done Interrupt Enable
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* CIRIE : Card Insertion or Removal Interrupt Enable
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* CRDIE : Command-Response transfer Done Interrupt Enable
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* CRTOIE : Command-Response response TimeOut Interrupt Enable
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* ASCRDIE : Auto Stop Command-Response transfer Done Interrupt Enable
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* DTIE : Data access Timeout Interrupt Enable
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* SCIE : reSponse CRC error Interrupt Enable
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* RCIE : Read data CRC error Interrupt Enable
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* WCIE : Write data CRC error Interrupt Enable
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*/
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#define VIA_CRDR_SDINTMASK_MBDIE 0x10
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#define VIA_CRDR_SDINTMASK_BDDIE 0x20
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#define VIA_CRDR_SDINTMASK_CIRIE 0x80
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#define VIA_CRDR_SDINTMASK_CRDIE 0x200
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#define VIA_CRDR_SDINTMASK_CRTOIE 0x400
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#define VIA_CRDR_SDINTMASK_ASCRDIE 0x800
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#define VIA_CRDR_SDINTMASK_DTIE 0x1000
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#define VIA_CRDR_SDINTMASK_SCIE 0x2000
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#define VIA_CRDR_SDINTMASK_RCIE 0x4000
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#define VIA_CRDR_SDINTMASK_WCIE 0x8000
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#define VIA_CRDR_SDACTIVE_INTMASK \
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(VIA_CRDR_SDINTMASK_MBDIE | VIA_CRDR_SDINTMASK_CIRIE \
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| VIA_CRDR_SDINTMASK_CRDIE | VIA_CRDR_SDINTMASK_CRTOIE \
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| VIA_CRDR_SDINTMASK_DTIE | VIA_CRDR_SDINTMASK_SCIE \
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| VIA_CRDR_SDINTMASK_RCIE | VIA_CRDR_SDINTMASK_WCIE)
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#define VIA_CRDR_SDSTATUS 0x28
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/*
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* CECC : Reserved
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* WP : SD card Write Protect status
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* SLOTD : Reserved
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* SLOTG : SD SLOT status(Gpi pin status)
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* MBD : Multiple Blocks transfer Done interrupt status
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* BDD : Block Data transfer Done interrupt status
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* CD : Reserved
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* CIR : Card Insertion or Removal interrupt detected on GPI pin
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* IO : Reserved
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* CRD : Command-Response transfer Done interrupt status
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* CRTO : Command-Response response TimeOut interrupt status
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* ASCRDIE : Auto Stop Command-Response transfer Done interrupt status
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* DT : Data access Timeout interrupt status
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* SC : reSponse CRC error interrupt status
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* RC : Read data CRC error interrupt status
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* WC : Write data CRC error interrupt status
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*/
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#define VIA_CRDR_SDSTS_CECC 0x01
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#define VIA_CRDR_SDSTS_WP 0x02
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#define VIA_CRDR_SDSTS_SLOTD 0x04
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#define VIA_CRDR_SDSTS_SLOTG 0x08
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#define VIA_CRDR_SDSTS_MBD 0x10
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#define VIA_CRDR_SDSTS_BDD 0x20
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#define VIA_CRDR_SDSTS_CD 0x40
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#define VIA_CRDR_SDSTS_CIR 0x80
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#define VIA_CRDR_SDSTS_IO 0x100
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#define VIA_CRDR_SDSTS_CRD 0x200
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#define VIA_CRDR_SDSTS_CRTO 0x400
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#define VIA_CRDR_SDSTS_ASCRDIE 0x800
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#define VIA_CRDR_SDSTS_DT 0x1000
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#define VIA_CRDR_SDSTS_SC 0x2000
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#define VIA_CRDR_SDSTS_RC 0x4000
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#define VIA_CRDR_SDSTS_WC 0x8000
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#define VIA_CRDR_SDSTS_IGN_MASK\
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(VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_IO)
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#define VIA_CRDR_SDSTS_INT_MASK \
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(VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_CD \
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| VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_IO | VIA_CRDR_SDSTS_CRD \
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| VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
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| VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
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#define VIA_CRDR_SDSTS_W1C_MASK \
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(VIA_CRDR_SDSTS_CECC | VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD \
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| VIA_CRDR_SDSTS_CD | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_CRD \
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| VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
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| VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
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#define VIA_CRDR_SDSTS_CMD_MASK \
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(VIA_CRDR_SDSTS_CRD | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_SC)
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#define VIA_CRDR_SDSTS_DATA_MASK\
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(VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_DT \
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| VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
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#define VIA_CRDR_SDSTATUS2 0x2a
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/*
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* CFE : Enable SD host automatic Clock FReezing
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*/
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#define VIA_CRDR_SDSTS_CFE 0x80
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#define VIA_CRDR_SDRSPTMO 0x2C
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#define VIA_CRDR_SDCLKSEL 0x30
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#define VIA_CRDR_SDEXTCTRL 0x34
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#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SD 0x01
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#define VIS_CRDR_SDEXTCTRL_SHIFT_9 0x02
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#define VIS_CRDR_SDEXTCTRL_MMC_8BIT 0x04
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#define VIS_CRDR_SDEXTCTRL_RELD_BLK 0x08
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#define VIS_CRDR_SDEXTCTRL_BAD_CMDA 0x10
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#define VIS_CRDR_SDEXTCTRL_BAD_DATA 0x20
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#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SPI 0x40
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#define VIA_CRDR_SDEXTCTRL_HISPD 0x80
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/* 0x38-0xFF reserved */
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/*
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* Data DMA Control Registers
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*/
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#define VIA_CRDR_DMABASEADD 0x0
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#define VIA_CRDR_DMACOUNTER 0x4
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#define VIA_CRDR_DMACTRL 0x8
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/*
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* DIR :Transaction Direction
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* 0 : From card to memory
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* 1 : From memory to card
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*/
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#define VIA_CRDR_DMACTRL_DIR 0x100
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#define VIA_CRDR_DMACTRL_ENIRQ 0x10000
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#define VIA_CRDR_DMACTRL_SFTRST 0x1000000
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#define VIA_CRDR_DMASTS 0xc
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#define VIA_CRDR_DMASTART 0x10
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/*0x14-0xFF reserved*/
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/*
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* PCI Control Registers
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*/
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/*0x0 - 0x1 reserved*/
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#define VIA_CRDR_PCICLKGATT 0x2
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/*
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* SFTRST :
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* 0 : Soft reset all the controller and it will be de-asserted automatically
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* 1 : Soft reset is de-asserted
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*/
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#define VIA_CRDR_PCICLKGATT_SFTRST 0x01
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/*
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* 3V3 : Pad power select
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* 0 : 1.8V
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* 1 : 3.3V
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* NOTE : No mater what the actual value should be, this bit always
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* read as 0. This is a hardware bug.
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*/
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#define VIA_CRDR_PCICLKGATT_3V3 0x10
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/*
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* PAD_PWRON : Pad Power on/off select
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* 0 : Power off
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* 1 : Power on
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* NOTE : No mater what the actual value should be, this bit always
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* read as 0. This is a hardware bug.
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*/
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#define VIA_CRDR_PCICLKGATT_PAD_PWRON 0x20
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#define VIA_CRDR_PCISDCCLK 0x5
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#define VIA_CRDR_PCIDMACLK 0x7
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#define VIA_CRDR_PCIDMACLK_SDC 0x2
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#define VIA_CRDR_PCIINTCTRL 0x8
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#define VIA_CRDR_PCIINTCTRL_SDCIRQEN 0x04
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#define VIA_CRDR_PCIINTSTATUS 0x9
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#define VIA_CRDR_PCIINTSTATUS_SDC 0x04
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#define VIA_CRDR_PCITMOCTRL 0xa
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#define VIA_CRDR_PCITMOCTRL_NO 0x0
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#define VIA_CRDR_PCITMOCTRL_32US 0x1
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#define VIA_CRDR_PCITMOCTRL_256US 0x2
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#define VIA_CRDR_PCITMOCTRL_1024US 0x3
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#define VIA_CRDR_PCITMOCTRL_256MS 0x4
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#define VIA_CRDR_PCITMOCTRL_512MS 0x5
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#define VIA_CRDR_PCITMOCTRL_1024MS 0x6
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/*0xB-0xFF reserved*/
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enum PCI_HOST_CLK_CONTROL {
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PCI_CLK_375K = 0x03,
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PCI_CLK_8M = 0x04,
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PCI_CLK_12M = 0x00,
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PCI_CLK_16M = 0x05,
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PCI_CLK_24M = 0x01,
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PCI_CLK_33M = 0x06,
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PCI_CLK_48M = 0x02
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};
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struct sdhcreg {
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u32 sdcontrol_reg;
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u32 sdcmdarg_reg;
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u32 sdbusmode_reg;
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u32 sdblklen_reg;
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u32 sdresp_reg[4];
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u32 sdcurblkcnt_reg;
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u32 sdintmask_reg;
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u32 sdstatus_reg;
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u32 sdrsptmo_reg;
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u32 sdclksel_reg;
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u32 sdextctrl_reg;
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};
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struct pcictrlreg {
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u8 reserve[2];
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u8 pciclkgat_reg;
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u8 pcinfcclk_reg;
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u8 pcimscclk_reg;
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u8 pcisdclk_reg;
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u8 pcicaclk_reg;
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u8 pcidmaclk_reg;
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u8 pciintctrl_reg;
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u8 pciintstatus_reg;
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u8 pcitmoctrl_reg;
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u8 Resv;
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};
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struct via_crdr_mmc_host {
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struct mmc_host *mmc;
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struct mmc_request *mrq;
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struct mmc_command *cmd;
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struct mmc_data *data;
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void __iomem *mmiobase;
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void __iomem *sdhc_mmiobase;
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void __iomem *ddma_mmiobase;
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void __iomem *pcictrl_mmiobase;
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struct pcictrlreg pm_pcictrl_reg;
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struct sdhcreg pm_sdhc_reg;
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struct work_struct carddet_work;
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struct tasklet_struct finish_tasklet;
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struct timer_list timer;
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spinlock_t lock;
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u8 power;
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int reject;
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unsigned int quirks;
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};
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/* some devices need a very long delay for power to stabilize */
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#define VIA_CRDR_QUIRK_300MS_PWRDELAY 0x0001
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static const struct pci_device_id via_ids[] = {
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{PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_9530,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0,},
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, via_ids);
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static void via_print_sdchc(struct via_crdr_mmc_host *host)
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{
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void __iomem *addrbase = host->sdhc_mmiobase;
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pr_debug("SDC MMIO Registers:\n");
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pr_debug("SDCONTROL=%08x, SDCMDARG=%08x, SDBUSMODE=%08x\n",
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readl(addrbase + VIA_CRDR_SDCTRL),
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readl(addrbase + VIA_CRDR_SDCARG),
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readl(addrbase + VIA_CRDR_SDBUSMODE));
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pr_debug("SDBLKLEN=%08x, SDCURBLKCNT=%08x, SDINTMASK=%08x\n",
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readl(addrbase + VIA_CRDR_SDBLKLEN),
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readl(addrbase + VIA_CRDR_SDCURBLKCNT),
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readl(addrbase + VIA_CRDR_SDINTMASK));
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pr_debug("SDSTATUS=%08x, SDCLKSEL=%08x, SDEXTCTRL=%08x\n",
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readl(addrbase + VIA_CRDR_SDSTATUS),
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readl(addrbase + VIA_CRDR_SDCLKSEL),
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readl(addrbase + VIA_CRDR_SDEXTCTRL));
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}
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static void via_print_pcictrl(struct via_crdr_mmc_host *host)
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{
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void __iomem *addrbase = host->pcictrl_mmiobase;
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pr_debug("PCI Control Registers:\n");
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pr_debug("PCICLKGATT=%02x, PCISDCCLK=%02x, PCIDMACLK=%02x\n",
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readb(addrbase + VIA_CRDR_PCICLKGATT),
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readb(addrbase + VIA_CRDR_PCISDCCLK),
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readb(addrbase + VIA_CRDR_PCIDMACLK));
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pr_debug("PCIINTCTRL=%02x, PCIINTSTATUS=%02x\n",
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readb(addrbase + VIA_CRDR_PCIINTCTRL),
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readb(addrbase + VIA_CRDR_PCIINTSTATUS));
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}
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static void via_save_pcictrlreg(struct via_crdr_mmc_host *host)
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{
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struct pcictrlreg *pm_pcictrl_reg;
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void __iomem *addrbase;
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pm_pcictrl_reg = &(host->pm_pcictrl_reg);
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addrbase = host->pcictrl_mmiobase;
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pm_pcictrl_reg->pciclkgat_reg = readb(addrbase + VIA_CRDR_PCICLKGATT);
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pm_pcictrl_reg->pciclkgat_reg |=
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VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
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pm_pcictrl_reg->pcisdclk_reg = readb(addrbase + VIA_CRDR_PCISDCCLK);
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pm_pcictrl_reg->pcidmaclk_reg = readb(addrbase + VIA_CRDR_PCIDMACLK);
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pm_pcictrl_reg->pciintctrl_reg = readb(addrbase + VIA_CRDR_PCIINTCTRL);
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pm_pcictrl_reg->pciintstatus_reg =
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readb(addrbase + VIA_CRDR_PCIINTSTATUS);
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pm_pcictrl_reg->pcitmoctrl_reg = readb(addrbase + VIA_CRDR_PCITMOCTRL);
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}
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static void via_restore_pcictrlreg(struct via_crdr_mmc_host *host)
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{
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struct pcictrlreg *pm_pcictrl_reg;
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void __iomem *addrbase;
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pm_pcictrl_reg = &(host->pm_pcictrl_reg);
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addrbase = host->pcictrl_mmiobase;
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writeb(pm_pcictrl_reg->pciclkgat_reg, addrbase + VIA_CRDR_PCICLKGATT);
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writeb(pm_pcictrl_reg->pcisdclk_reg, addrbase + VIA_CRDR_PCISDCCLK);
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writeb(pm_pcictrl_reg->pcidmaclk_reg, addrbase + VIA_CRDR_PCIDMACLK);
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writeb(pm_pcictrl_reg->pciintctrl_reg, addrbase + VIA_CRDR_PCIINTCTRL);
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writeb(pm_pcictrl_reg->pciintstatus_reg,
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addrbase + VIA_CRDR_PCIINTSTATUS);
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writeb(pm_pcictrl_reg->pcitmoctrl_reg, addrbase + VIA_CRDR_PCITMOCTRL);
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}
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static void via_save_sdcreg(struct via_crdr_mmc_host *host)
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{
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struct sdhcreg *pm_sdhc_reg;
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void __iomem *addrbase;
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pm_sdhc_reg = &(host->pm_sdhc_reg);
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addrbase = host->sdhc_mmiobase;
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pm_sdhc_reg->sdcontrol_reg = readl(addrbase + VIA_CRDR_SDCTRL);
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pm_sdhc_reg->sdcmdarg_reg = readl(addrbase + VIA_CRDR_SDCARG);
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pm_sdhc_reg->sdbusmode_reg = readl(addrbase + VIA_CRDR_SDBUSMODE);
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pm_sdhc_reg->sdblklen_reg = readl(addrbase + VIA_CRDR_SDBLKLEN);
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pm_sdhc_reg->sdcurblkcnt_reg = readl(addrbase + VIA_CRDR_SDCURBLKCNT);
|
|
pm_sdhc_reg->sdintmask_reg = readl(addrbase + VIA_CRDR_SDINTMASK);
|
|
pm_sdhc_reg->sdstatus_reg = readl(addrbase + VIA_CRDR_SDSTATUS);
|
|
pm_sdhc_reg->sdrsptmo_reg = readl(addrbase + VIA_CRDR_SDRSPTMO);
|
|
pm_sdhc_reg->sdclksel_reg = readl(addrbase + VIA_CRDR_SDCLKSEL);
|
|
pm_sdhc_reg->sdextctrl_reg = readl(addrbase + VIA_CRDR_SDEXTCTRL);
|
|
}
|
|
|
|
static void via_restore_sdcreg(struct via_crdr_mmc_host *host)
|
|
{
|
|
struct sdhcreg *pm_sdhc_reg;
|
|
void __iomem *addrbase;
|
|
|
|
pm_sdhc_reg = &(host->pm_sdhc_reg);
|
|
addrbase = host->sdhc_mmiobase;
|
|
|
|
writel(pm_sdhc_reg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
|
|
writel(pm_sdhc_reg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
|
|
writel(pm_sdhc_reg->sdbusmode_reg, addrbase + VIA_CRDR_SDBUSMODE);
|
|
writel(pm_sdhc_reg->sdblklen_reg, addrbase + VIA_CRDR_SDBLKLEN);
|
|
writel(pm_sdhc_reg->sdcurblkcnt_reg, addrbase + VIA_CRDR_SDCURBLKCNT);
|
|
writel(pm_sdhc_reg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
|
|
writel(pm_sdhc_reg->sdstatus_reg, addrbase + VIA_CRDR_SDSTATUS);
|
|
writel(pm_sdhc_reg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
|
|
writel(pm_sdhc_reg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
|
|
writel(pm_sdhc_reg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
|
|
}
|
|
|
|
static void via_pwron_sleep(struct via_crdr_mmc_host *sdhost)
|
|
{
|
|
if (sdhost->quirks & VIA_CRDR_QUIRK_300MS_PWRDELAY)
|
|
msleep(300);
|
|
else
|
|
msleep(3);
|
|
}
|
|
|
|
static void via_set_ddma(struct via_crdr_mmc_host *host,
|
|
dma_addr_t dmaaddr, u32 count, int dir, int enirq)
|
|
{
|
|
void __iomem *addrbase;
|
|
u32 ctrl_data = 0;
|
|
|
|
if (enirq)
|
|
ctrl_data |= VIA_CRDR_DMACTRL_ENIRQ;
|
|
|
|
if (dir)
|
|
ctrl_data |= VIA_CRDR_DMACTRL_DIR;
|
|
|
|
addrbase = host->ddma_mmiobase;
|
|
|
|
writel(dmaaddr, addrbase + VIA_CRDR_DMABASEADD);
|
|
writel(count, addrbase + VIA_CRDR_DMACOUNTER);
|
|
writel(ctrl_data, addrbase + VIA_CRDR_DMACTRL);
|
|
writel(0x01, addrbase + VIA_CRDR_DMASTART);
|
|
|
|
/* It seems that our DMA can not work normally with 375kHz clock */
|
|
/* FIXME: don't brute-force 8MHz but use PIO at 375kHz !! */
|
|
addrbase = host->pcictrl_mmiobase;
|
|
if (readb(addrbase + VIA_CRDR_PCISDCCLK) == PCI_CLK_375K) {
|
|
dev_info(host->mmc->parent, "forcing card speed to 8MHz\n");
|
|
writeb(PCI_CLK_8M, addrbase + VIA_CRDR_PCISDCCLK);
|
|
}
|
|
}
|
|
|
|
static void via_sdc_preparedata(struct via_crdr_mmc_host *host,
|
|
struct mmc_data *data)
|
|
{
|
|
void __iomem *addrbase;
|
|
u32 blk_reg;
|
|
int count;
|
|
|
|
WARN_ON(host->data);
|
|
|
|
/* Sanity checks */
|
|
BUG_ON(data->blksz > host->mmc->max_blk_size);
|
|
BUG_ON(data->blocks > host->mmc->max_blk_count);
|
|
|
|
host->data = data;
|
|
|
|
count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
|
|
((data->flags & MMC_DATA_READ) ?
|
|
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
|
|
BUG_ON(count != 1);
|
|
|
|
via_set_ddma(host, sg_dma_address(data->sg), sg_dma_len(data->sg),
|
|
(data->flags & MMC_DATA_WRITE) ? 1 : 0, 1);
|
|
|
|
addrbase = host->sdhc_mmiobase;
|
|
|
|
blk_reg = data->blksz - 1;
|
|
blk_reg |= VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
|
|
blk_reg |= (data->blocks) << 16;
|
|
|
|
writel(blk_reg, addrbase + VIA_CRDR_SDBLKLEN);
|
|
}
|
|
|
|
static void via_sdc_get_response(struct via_crdr_mmc_host *host,
|
|
struct mmc_command *cmd)
|
|
{
|
|
void __iomem *addrbase = host->sdhc_mmiobase;
|
|
u32 dwdata0 = readl(addrbase + VIA_CRDR_SDRESP0);
|
|
u32 dwdata1 = readl(addrbase + VIA_CRDR_SDRESP1);
|
|
u32 dwdata2 = readl(addrbase + VIA_CRDR_SDRESP2);
|
|
u32 dwdata3 = readl(addrbase + VIA_CRDR_SDRESP3);
|
|
|
|
if (cmd->flags & MMC_RSP_136) {
|
|
cmd->resp[0] = ((u8) (dwdata1)) |
|
|
(((u8) (dwdata0 >> 24)) << 8) |
|
|
(((u8) (dwdata0 >> 16)) << 16) |
|
|
(((u8) (dwdata0 >> 8)) << 24);
|
|
|
|
cmd->resp[1] = ((u8) (dwdata2)) |
|
|
(((u8) (dwdata1 >> 24)) << 8) |
|
|
(((u8) (dwdata1 >> 16)) << 16) |
|
|
(((u8) (dwdata1 >> 8)) << 24);
|
|
|
|
cmd->resp[2] = ((u8) (dwdata3)) |
|
|
(((u8) (dwdata2 >> 24)) << 8) |
|
|
(((u8) (dwdata2 >> 16)) << 16) |
|
|
(((u8) (dwdata2 >> 8)) << 24);
|
|
|
|
cmd->resp[3] = 0xff |
|
|
((((u8) (dwdata3 >> 24))) << 8) |
|
|
(((u8) (dwdata3 >> 16)) << 16) |
|
|
(((u8) (dwdata3 >> 8)) << 24);
|
|
} else {
|
|
dwdata0 >>= 8;
|
|
cmd->resp[0] = ((dwdata0 & 0xff) << 24) |
|
|
(((dwdata0 >> 8) & 0xff) << 16) |
|
|
(((dwdata0 >> 16) & 0xff) << 8) | (dwdata1 & 0xff);
|
|
|
|
dwdata1 >>= 8;
|
|
cmd->resp[1] = ((dwdata1 & 0xff) << 24) |
|
|
(((dwdata1 >> 8) & 0xff) << 16) |
|
|
(((dwdata1 >> 16) & 0xff) << 8);
|
|
}
|
|
}
|
|
|
|
static void via_sdc_send_command(struct via_crdr_mmc_host *host,
|
|
struct mmc_command *cmd)
|
|
{
|
|
void __iomem *addrbase;
|
|
struct mmc_data *data;
|
|
u32 cmdctrl = 0;
|
|
|
|
WARN_ON(host->cmd);
|
|
|
|
data = cmd->data;
|
|
mod_timer(&host->timer, jiffies + HZ);
|
|
host->cmd = cmd;
|
|
|
|
/*Command index*/
|
|
cmdctrl = cmd->opcode << 8;
|
|
|
|
/*Response type*/
|
|
switch (mmc_resp_type(cmd)) {
|
|
case MMC_RSP_NONE:
|
|
cmdctrl |= VIA_CRDR_SDCTRL_RSP_NONE;
|
|
break;
|
|
case MMC_RSP_R1:
|
|
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1;
|
|
break;
|
|
case MMC_RSP_R1B:
|
|
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1B;
|
|
break;
|
|
case MMC_RSP_R2:
|
|
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R2;
|
|
break;
|
|
case MMC_RSP_R3:
|
|
cmdctrl |= VIA_CRDR_SDCTRL_RSP_R3;
|
|
break;
|
|
default:
|
|
pr_err("%s: cmd->flag is not valid\n", mmc_hostname(host->mmc));
|
|
break;
|
|
}
|
|
|
|
if (!(cmd->data))
|
|
goto nodata;
|
|
|
|
via_sdc_preparedata(host, data);
|
|
|
|
/*Command control*/
|
|
if (data->blocks > 1) {
|
|
if (data->flags & MMC_DATA_WRITE) {
|
|
cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
|
|
cmdctrl |= VIA_CRDR_SDCTRL_MULTI_WR;
|
|
} else {
|
|
cmdctrl |= VIA_CRDR_SDCTRL_MULTI_RD;
|
|
}
|
|
} else {
|
|
if (data->flags & MMC_DATA_WRITE) {
|
|
cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
|
|
cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_WR;
|
|
} else {
|
|
cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_RD;
|
|
}
|
|
}
|
|
|
|
nodata:
|
|
if (cmd == host->mrq->stop)
|
|
cmdctrl |= VIA_CRDR_SDCTRL_STOP;
|
|
|
|
cmdctrl |= VIA_CRDR_SDCTRL_START;
|
|
|
|
addrbase = host->sdhc_mmiobase;
|
|
writel(cmd->arg, addrbase + VIA_CRDR_SDCARG);
|
|
writel(cmdctrl, addrbase + VIA_CRDR_SDCTRL);
|
|
}
|
|
|
|
static void via_sdc_finish_data(struct via_crdr_mmc_host *host)
|
|
{
|
|
struct mmc_data *data;
|
|
|
|
BUG_ON(!host->data);
|
|
|
|
data = host->data;
|
|
host->data = NULL;
|
|
|
|
if (data->error)
|
|
data->bytes_xfered = 0;
|
|
else
|
|
data->bytes_xfered = data->blocks * data->blksz;
|
|
|
|
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
|
|
((data->flags & MMC_DATA_READ) ?
|
|
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
|
|
|
|
if (data->stop)
|
|
via_sdc_send_command(host, data->stop);
|
|
else
|
|
tasklet_schedule(&host->finish_tasklet);
|
|
}
|
|
|
|
static void via_sdc_finish_command(struct via_crdr_mmc_host *host)
|
|
{
|
|
via_sdc_get_response(host, host->cmd);
|
|
|
|
host->cmd->error = 0;
|
|
|
|
if (!host->cmd->data)
|
|
tasklet_schedule(&host->finish_tasklet);
|
|
|
|
host->cmd = NULL;
|
|
}
|
|
|
|
static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq)
|
|
{
|
|
void __iomem *addrbase;
|
|
struct via_crdr_mmc_host *host;
|
|
unsigned long flags;
|
|
u16 status;
|
|
|
|
host = mmc_priv(mmc);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
addrbase = host->pcictrl_mmiobase;
|
|
writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
|
|
|
|
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
|
|
status &= VIA_CRDR_SDSTS_W1C_MASK;
|
|
writew(status, host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
|
|
|
|
WARN_ON(host->mrq != NULL);
|
|
host->mrq = mrq;
|
|
|
|
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
|
|
if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) {
|
|
host->mrq->cmd->error = -ENOMEDIUM;
|
|
tasklet_schedule(&host->finish_tasklet);
|
|
} else {
|
|
via_sdc_send_command(host, mrq->cmd);
|
|
}
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
}
|
|
|
|
static void via_sdc_set_power(struct via_crdr_mmc_host *host,
|
|
unsigned short power, unsigned int on)
|
|
{
|
|
unsigned long flags;
|
|
u8 gatt;
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
host->power = (1 << power);
|
|
|
|
gatt = readb(host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
if (host->power == MMC_VDD_165_195)
|
|
gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
|
|
else
|
|
gatt |= VIA_CRDR_PCICLKGATT_3V3;
|
|
if (on)
|
|
gatt |= VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
else
|
|
gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
via_pwron_sleep(host);
|
|
}
|
|
|
|
static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
|
|
{
|
|
struct via_crdr_mmc_host *host;
|
|
unsigned long flags;
|
|
void __iomem *addrbase;
|
|
u32 org_data, sdextctrl;
|
|
u8 clock;
|
|
|
|
host = mmc_priv(mmc);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
addrbase = host->sdhc_mmiobase;
|
|
org_data = readl(addrbase + VIA_CRDR_SDBUSMODE);
|
|
sdextctrl = readl(addrbase + VIA_CRDR_SDEXTCTRL);
|
|
|
|
if (ios->bus_width == MMC_BUS_WIDTH_1)
|
|
org_data &= ~VIA_CRDR_SDMODE_4BIT;
|
|
else
|
|
org_data |= VIA_CRDR_SDMODE_4BIT;
|
|
|
|
if (ios->power_mode == MMC_POWER_OFF)
|
|
org_data &= ~VIA_CRDR_SDMODE_CLK_ON;
|
|
else
|
|
org_data |= VIA_CRDR_SDMODE_CLK_ON;
|
|
|
|
if (ios->timing == MMC_TIMING_SD_HS)
|
|
sdextctrl |= VIA_CRDR_SDEXTCTRL_HISPD;
|
|
else
|
|
sdextctrl &= ~VIA_CRDR_SDEXTCTRL_HISPD;
|
|
|
|
writel(org_data, addrbase + VIA_CRDR_SDBUSMODE);
|
|
writel(sdextctrl, addrbase + VIA_CRDR_SDEXTCTRL);
|
|
|
|
if (ios->clock >= 48000000)
|
|
clock = PCI_CLK_48M;
|
|
else if (ios->clock >= 33000000)
|
|
clock = PCI_CLK_33M;
|
|
else if (ios->clock >= 24000000)
|
|
clock = PCI_CLK_24M;
|
|
else if (ios->clock >= 16000000)
|
|
clock = PCI_CLK_16M;
|
|
else if (ios->clock >= 12000000)
|
|
clock = PCI_CLK_12M;
|
|
else if (ios->clock >= 8000000)
|
|
clock = PCI_CLK_8M;
|
|
else
|
|
clock = PCI_CLK_375K;
|
|
|
|
addrbase = host->pcictrl_mmiobase;
|
|
if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock)
|
|
writeb(clock, addrbase + VIA_CRDR_PCISDCCLK);
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
if (ios->power_mode != MMC_POWER_OFF)
|
|
via_sdc_set_power(host, ios->vdd, 1);
|
|
else
|
|
via_sdc_set_power(host, ios->vdd, 0);
|
|
}
|
|
|
|
static int via_sdc_get_ro(struct mmc_host *mmc)
|
|
{
|
|
struct via_crdr_mmc_host *host;
|
|
unsigned long flags;
|
|
u16 status;
|
|
|
|
host = mmc_priv(mmc);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
|
|
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
return !(status & VIA_CRDR_SDSTS_WP);
|
|
}
|
|
|
|
static const struct mmc_host_ops via_sdc_ops = {
|
|
.request = via_sdc_request,
|
|
.set_ios = via_sdc_set_ios,
|
|
.get_ro = via_sdc_get_ro,
|
|
};
|
|
|
|
static void via_reset_pcictrl(struct via_crdr_mmc_host *host)
|
|
{
|
|
unsigned long flags;
|
|
u8 gatt;
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
via_save_pcictrlreg(host);
|
|
via_save_sdcreg(host);
|
|
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
if (host->power == MMC_VDD_165_195)
|
|
gatt &= VIA_CRDR_PCICLKGATT_3V3;
|
|
else
|
|
gatt |= VIA_CRDR_PCICLKGATT_3V3;
|
|
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
via_pwron_sleep(host);
|
|
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
|
|
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
msleep(3);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
via_restore_pcictrlreg(host);
|
|
via_restore_sdcreg(host);
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
}
|
|
|
|
static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask)
|
|
{
|
|
BUG_ON(intmask == 0);
|
|
|
|
if (!host->cmd) {
|
|
pr_err("%s: Got command interrupt 0x%x even "
|
|
"though no command operation was in progress.\n",
|
|
mmc_hostname(host->mmc), intmask);
|
|
return;
|
|
}
|
|
|
|
if (intmask & VIA_CRDR_SDSTS_CRTO)
|
|
host->cmd->error = -ETIMEDOUT;
|
|
else if (intmask & VIA_CRDR_SDSTS_SC)
|
|
host->cmd->error = -EILSEQ;
|
|
|
|
if (host->cmd->error)
|
|
tasklet_schedule(&host->finish_tasklet);
|
|
else if (intmask & VIA_CRDR_SDSTS_CRD)
|
|
via_sdc_finish_command(host);
|
|
}
|
|
|
|
static void via_sdc_data_isr(struct via_crdr_mmc_host *host, u16 intmask)
|
|
{
|
|
BUG_ON(intmask == 0);
|
|
|
|
if (intmask & VIA_CRDR_SDSTS_DT)
|
|
host->data->error = -ETIMEDOUT;
|
|
else if (intmask & (VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC))
|
|
host->data->error = -EILSEQ;
|
|
|
|
via_sdc_finish_data(host);
|
|
}
|
|
|
|
static irqreturn_t via_sdc_isr(int irq, void *dev_id)
|
|
{
|
|
struct via_crdr_mmc_host *sdhost = dev_id;
|
|
void __iomem *addrbase;
|
|
u8 pci_status;
|
|
u16 sd_status;
|
|
irqreturn_t result;
|
|
|
|
if (!sdhost)
|
|
return IRQ_NONE;
|
|
|
|
spin_lock(&sdhost->lock);
|
|
|
|
addrbase = sdhost->pcictrl_mmiobase;
|
|
pci_status = readb(addrbase + VIA_CRDR_PCIINTSTATUS);
|
|
if (!(pci_status & VIA_CRDR_PCIINTSTATUS_SDC)) {
|
|
result = IRQ_NONE;
|
|
goto out;
|
|
}
|
|
|
|
addrbase = sdhost->sdhc_mmiobase;
|
|
sd_status = readw(addrbase + VIA_CRDR_SDSTATUS);
|
|
sd_status &= VIA_CRDR_SDSTS_INT_MASK;
|
|
sd_status &= ~VIA_CRDR_SDSTS_IGN_MASK;
|
|
if (!sd_status) {
|
|
result = IRQ_NONE;
|
|
goto out;
|
|
}
|
|
|
|
if (sd_status & VIA_CRDR_SDSTS_CIR) {
|
|
writew(sd_status & VIA_CRDR_SDSTS_CIR,
|
|
addrbase + VIA_CRDR_SDSTATUS);
|
|
|
|
schedule_work(&sdhost->carddet_work);
|
|
}
|
|
|
|
sd_status &= ~VIA_CRDR_SDSTS_CIR;
|
|
if (sd_status & VIA_CRDR_SDSTS_CMD_MASK) {
|
|
writew(sd_status & VIA_CRDR_SDSTS_CMD_MASK,
|
|
addrbase + VIA_CRDR_SDSTATUS);
|
|
via_sdc_cmd_isr(sdhost, sd_status & VIA_CRDR_SDSTS_CMD_MASK);
|
|
}
|
|
if (sd_status & VIA_CRDR_SDSTS_DATA_MASK) {
|
|
writew(sd_status & VIA_CRDR_SDSTS_DATA_MASK,
|
|
addrbase + VIA_CRDR_SDSTATUS);
|
|
via_sdc_data_isr(sdhost, sd_status & VIA_CRDR_SDSTS_DATA_MASK);
|
|
}
|
|
|
|
sd_status &= ~(VIA_CRDR_SDSTS_CMD_MASK | VIA_CRDR_SDSTS_DATA_MASK);
|
|
if (sd_status) {
|
|
pr_err("%s: Unexpected interrupt 0x%x\n",
|
|
mmc_hostname(sdhost->mmc), sd_status);
|
|
writew(sd_status, addrbase + VIA_CRDR_SDSTATUS);
|
|
}
|
|
|
|
result = IRQ_HANDLED;
|
|
|
|
mmiowb();
|
|
out:
|
|
spin_unlock(&sdhost->lock);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void via_sdc_timeout(unsigned long ulongdata)
|
|
{
|
|
struct via_crdr_mmc_host *sdhost;
|
|
unsigned long flags;
|
|
|
|
sdhost = (struct via_crdr_mmc_host *)ulongdata;
|
|
|
|
spin_lock_irqsave(&sdhost->lock, flags);
|
|
|
|
if (sdhost->mrq) {
|
|
pr_err("%s: Timeout waiting for hardware interrupt."
|
|
"cmd:0x%x\n", mmc_hostname(sdhost->mmc),
|
|
sdhost->mrq->cmd->opcode);
|
|
|
|
if (sdhost->data) {
|
|
writel(VIA_CRDR_DMACTRL_SFTRST,
|
|
sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
|
|
sdhost->data->error = -ETIMEDOUT;
|
|
via_sdc_finish_data(sdhost);
|
|
} else {
|
|
if (sdhost->cmd)
|
|
sdhost->cmd->error = -ETIMEDOUT;
|
|
else
|
|
sdhost->mrq->cmd->error = -ETIMEDOUT;
|
|
tasklet_schedule(&sdhost->finish_tasklet);
|
|
}
|
|
}
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&sdhost->lock, flags);
|
|
}
|
|
|
|
static void via_sdc_tasklet_finish(unsigned long param)
|
|
{
|
|
struct via_crdr_mmc_host *host;
|
|
unsigned long flags;
|
|
struct mmc_request *mrq;
|
|
|
|
host = (struct via_crdr_mmc_host *)param;
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
del_timer(&host->timer);
|
|
mrq = host->mrq;
|
|
host->mrq = NULL;
|
|
host->cmd = NULL;
|
|
host->data = NULL;
|
|
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
mmc_request_done(host->mmc, mrq);
|
|
}
|
|
|
|
static void via_sdc_card_detect(struct work_struct *work)
|
|
{
|
|
struct via_crdr_mmc_host *host;
|
|
void __iomem *addrbase;
|
|
unsigned long flags;
|
|
u16 status;
|
|
|
|
host = container_of(work, struct via_crdr_mmc_host, carddet_work);
|
|
|
|
addrbase = host->ddma_mmiobase;
|
|
writel(VIA_CRDR_DMACTRL_SFTRST, addrbase + VIA_CRDR_DMACTRL);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
|
|
addrbase = host->pcictrl_mmiobase;
|
|
writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
|
|
|
|
addrbase = host->sdhc_mmiobase;
|
|
status = readw(addrbase + VIA_CRDR_SDSTATUS);
|
|
if (!(status & VIA_CRDR_SDSTS_SLOTG)) {
|
|
if (host->mrq) {
|
|
pr_err("%s: Card removed during transfer!\n",
|
|
mmc_hostname(host->mmc));
|
|
host->mrq->cmd->error = -ENOMEDIUM;
|
|
tasklet_schedule(&host->finish_tasklet);
|
|
}
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
via_reset_pcictrl(host);
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
}
|
|
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
via_print_pcictrl(host);
|
|
via_print_sdchc(host);
|
|
|
|
mmc_detect_change(host->mmc, msecs_to_jiffies(500));
|
|
}
|
|
|
|
static void via_init_mmc_host(struct via_crdr_mmc_host *host)
|
|
{
|
|
struct mmc_host *mmc = host->mmc;
|
|
void __iomem *addrbase;
|
|
u32 lenreg;
|
|
u32 status;
|
|
|
|
init_timer(&host->timer);
|
|
host->timer.data = (unsigned long)host;
|
|
host->timer.function = via_sdc_timeout;
|
|
|
|
spin_lock_init(&host->lock);
|
|
|
|
mmc->f_min = VIA_CRDR_MIN_CLOCK;
|
|
mmc->f_max = VIA_CRDR_MAX_CLOCK;
|
|
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
|
|
mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED;
|
|
mmc->ops = &via_sdc_ops;
|
|
|
|
/*Hardware cannot do scatter lists*/
|
|
mmc->max_segs = 1;
|
|
|
|
mmc->max_blk_size = VIA_CRDR_MAX_BLOCK_LENGTH;
|
|
mmc->max_blk_count = VIA_CRDR_MAX_BLOCK_COUNT;
|
|
|
|
mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
|
|
mmc->max_req_size = mmc->max_seg_size;
|
|
|
|
INIT_WORK(&host->carddet_work, via_sdc_card_detect);
|
|
|
|
tasklet_init(&host->finish_tasklet, via_sdc_tasklet_finish,
|
|
(unsigned long)host);
|
|
|
|
addrbase = host->sdhc_mmiobase;
|
|
writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
|
|
msleep(1);
|
|
|
|
lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
|
|
writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
|
|
|
|
status = readw(addrbase + VIA_CRDR_SDSTATUS);
|
|
status &= VIA_CRDR_SDSTS_W1C_MASK;
|
|
writew(status, addrbase + VIA_CRDR_SDSTATUS);
|
|
|
|
status = readw(addrbase + VIA_CRDR_SDSTATUS2);
|
|
status |= VIA_CRDR_SDSTS_CFE;
|
|
writew(status, addrbase + VIA_CRDR_SDSTATUS2);
|
|
|
|
writeb(0x0, addrbase + VIA_CRDR_SDEXTCTRL);
|
|
|
|
writel(VIA_CRDR_SDACTIVE_INTMASK, addrbase + VIA_CRDR_SDINTMASK);
|
|
msleep(1);
|
|
}
|
|
|
|
static int via_sd_probe(struct pci_dev *pcidev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct mmc_host *mmc;
|
|
struct via_crdr_mmc_host *sdhost;
|
|
u32 base, len;
|
|
u8 gatt;
|
|
int ret;
|
|
|
|
pr_info(DRV_NAME
|
|
": VIA SDMMC controller found at %s [%04x:%04x] (rev %x)\n",
|
|
pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
|
|
(int)pcidev->revision);
|
|
|
|
ret = pci_enable_device(pcidev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pci_request_regions(pcidev, DRV_NAME);
|
|
if (ret)
|
|
goto disable;
|
|
|
|
pci_write_config_byte(pcidev, VIA_CRDR_PCI_WORK_MODE, 0);
|
|
pci_write_config_byte(pcidev, VIA_CRDR_PCI_DBG_MODE, 0);
|
|
|
|
mmc = mmc_alloc_host(sizeof(struct via_crdr_mmc_host), &pcidev->dev);
|
|
if (!mmc) {
|
|
ret = -ENOMEM;
|
|
goto release;
|
|
}
|
|
|
|
sdhost = mmc_priv(mmc);
|
|
sdhost->mmc = mmc;
|
|
dev_set_drvdata(&pcidev->dev, sdhost);
|
|
|
|
len = pci_resource_len(pcidev, 0);
|
|
base = pci_resource_start(pcidev, 0);
|
|
sdhost->mmiobase = ioremap_nocache(base, len);
|
|
if (!sdhost->mmiobase) {
|
|
ret = -ENOMEM;
|
|
goto free_mmc_host;
|
|
}
|
|
|
|
sdhost->sdhc_mmiobase =
|
|
sdhost->mmiobase + VIA_CRDR_SDC_OFF;
|
|
sdhost->ddma_mmiobase =
|
|
sdhost->mmiobase + VIA_CRDR_DDMA_OFF;
|
|
sdhost->pcictrl_mmiobase =
|
|
sdhost->mmiobase + VIA_CRDR_PCICTRL_OFF;
|
|
|
|
sdhost->power = MMC_VDD_165_195;
|
|
|
|
gatt = VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
via_pwron_sleep(sdhost);
|
|
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
|
|
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
msleep(3);
|
|
|
|
via_init_mmc_host(sdhost);
|
|
|
|
ret =
|
|
request_irq(pcidev->irq, via_sdc_isr, IRQF_SHARED, DRV_NAME,
|
|
sdhost);
|
|
if (ret)
|
|
goto unmap;
|
|
|
|
writeb(VIA_CRDR_PCIINTCTRL_SDCIRQEN,
|
|
sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
|
|
writeb(VIA_CRDR_PCITMOCTRL_1024MS,
|
|
sdhost->pcictrl_mmiobase + VIA_CRDR_PCITMOCTRL);
|
|
|
|
/* device-specific quirks */
|
|
if (pcidev->subsystem_vendor == PCI_VENDOR_ID_LENOVO &&
|
|
pcidev->subsystem_device == 0x3891)
|
|
sdhost->quirks = VIA_CRDR_QUIRK_300MS_PWRDELAY;
|
|
|
|
mmc_add_host(mmc);
|
|
|
|
return 0;
|
|
|
|
unmap:
|
|
iounmap(sdhost->mmiobase);
|
|
free_mmc_host:
|
|
dev_set_drvdata(&pcidev->dev, NULL);
|
|
mmc_free_host(mmc);
|
|
release:
|
|
pci_release_regions(pcidev);
|
|
disable:
|
|
pci_disable_device(pcidev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void via_sd_remove(struct pci_dev *pcidev)
|
|
{
|
|
struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev);
|
|
unsigned long flags;
|
|
u8 gatt;
|
|
|
|
spin_lock_irqsave(&sdhost->lock, flags);
|
|
|
|
/* Ensure we don't accept more commands from mmc layer */
|
|
sdhost->reject = 1;
|
|
|
|
/* Disable generating further interrupts */
|
|
writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
|
|
mmiowb();
|
|
|
|
if (sdhost->mrq) {
|
|
pr_err("%s: Controller removed during "
|
|
"transfer\n", mmc_hostname(sdhost->mmc));
|
|
|
|
/* make sure all DMA is stopped */
|
|
writel(VIA_CRDR_DMACTRL_SFTRST,
|
|
sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
|
|
mmiowb();
|
|
sdhost->mrq->cmd->error = -ENOMEDIUM;
|
|
if (sdhost->mrq->stop)
|
|
sdhost->mrq->stop->error = -ENOMEDIUM;
|
|
tasklet_schedule(&sdhost->finish_tasklet);
|
|
}
|
|
spin_unlock_irqrestore(&sdhost->lock, flags);
|
|
|
|
mmc_remove_host(sdhost->mmc);
|
|
|
|
free_irq(pcidev->irq, sdhost);
|
|
|
|
del_timer_sync(&sdhost->timer);
|
|
|
|
tasklet_kill(&sdhost->finish_tasklet);
|
|
|
|
/* switch off power */
|
|
gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
|
|
iounmap(sdhost->mmiobase);
|
|
dev_set_drvdata(&pcidev->dev, NULL);
|
|
mmc_free_host(sdhost->mmc);
|
|
pci_release_regions(pcidev);
|
|
pci_disable_device(pcidev);
|
|
|
|
pr_info(DRV_NAME
|
|
": VIA SDMMC controller at %s [%04x:%04x] has been removed\n",
|
|
pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static void via_init_sdc_pm(struct via_crdr_mmc_host *host)
|
|
{
|
|
struct sdhcreg *pm_sdhcreg;
|
|
void __iomem *addrbase;
|
|
u32 lenreg;
|
|
u16 status;
|
|
|
|
pm_sdhcreg = &(host->pm_sdhc_reg);
|
|
addrbase = host->sdhc_mmiobase;
|
|
|
|
writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
|
|
|
|
lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
|
|
writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
|
|
|
|
status = readw(addrbase + VIA_CRDR_SDSTATUS);
|
|
status &= VIA_CRDR_SDSTS_W1C_MASK;
|
|
writew(status, addrbase + VIA_CRDR_SDSTATUS);
|
|
|
|
status = readw(addrbase + VIA_CRDR_SDSTATUS2);
|
|
status |= VIA_CRDR_SDSTS_CFE;
|
|
writew(status, addrbase + VIA_CRDR_SDSTATUS2);
|
|
|
|
writel(pm_sdhcreg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
|
|
writel(pm_sdhcreg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
|
|
writel(pm_sdhcreg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
|
|
writel(pm_sdhcreg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
|
|
writel(pm_sdhcreg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
|
|
writel(pm_sdhcreg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
|
|
|
|
via_print_pcictrl(host);
|
|
via_print_sdchc(host);
|
|
}
|
|
|
|
static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state)
|
|
{
|
|
struct via_crdr_mmc_host *host;
|
|
|
|
host = pci_get_drvdata(pcidev);
|
|
|
|
via_save_pcictrlreg(host);
|
|
via_save_sdcreg(host);
|
|
|
|
pci_save_state(pcidev);
|
|
pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
|
|
pci_disable_device(pcidev);
|
|
pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int via_sd_resume(struct pci_dev *pcidev)
|
|
{
|
|
struct via_crdr_mmc_host *sdhost;
|
|
int ret = 0;
|
|
u8 gatt;
|
|
|
|
sdhost = pci_get_drvdata(pcidev);
|
|
|
|
gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
|
|
if (sdhost->power == MMC_VDD_165_195)
|
|
gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
|
|
else
|
|
gatt |= VIA_CRDR_PCICLKGATT_3V3;
|
|
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
via_pwron_sleep(sdhost);
|
|
gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
|
|
writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
|
|
msleep(3);
|
|
|
|
msleep(100);
|
|
|
|
pci_set_power_state(pcidev, PCI_D0);
|
|
pci_restore_state(pcidev);
|
|
ret = pci_enable_device(pcidev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
via_restore_pcictrlreg(sdhost);
|
|
via_init_sdc_pm(sdhost);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#else /* CONFIG_PM */
|
|
|
|
#define via_sd_suspend NULL
|
|
#define via_sd_resume NULL
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct pci_driver via_sd_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = via_ids,
|
|
.probe = via_sd_probe,
|
|
.remove = via_sd_remove,
|
|
.suspend = via_sd_suspend,
|
|
.resume = via_sd_resume,
|
|
};
|
|
|
|
module_pci_driver(via_sd_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("VIA Technologies Inc.");
|
|
MODULE_DESCRIPTION("VIA SD/MMC Card Interface driver");
|