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4a268e0879
Not all targets have IRQ1 line routed from the SD controller to the processor. So we cannot rely on IRQ1 for PIO interrupts. This patch moves all PIO interrupts to IRQ0 and enables the PIO mode. Signed-off-by: Murali Palnati <palnatim@codeaurora.org> Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
257 lines
6.6 KiB
C
257 lines
6.6 KiB
C
/*
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* linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller
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*
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* Copyright (C) 2008 Google, 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 version 2 as
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* published by the Free Software Foundation.
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*
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* - Based on mmci.h
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*/
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#ifndef _MSM_SDCC_H
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#define _MSM_SDCC_H
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#define MSMSDCC_CRCI_SDC1 6
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#define MSMSDCC_CRCI_SDC2 7
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#define MSMSDCC_CRCI_SDC3 12
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#define MSMSDCC_CRCI_SDC4 13
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#define MMCIPOWER 0x000
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#define MCI_PWR_OFF 0x00
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#define MCI_PWR_UP 0x02
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#define MCI_PWR_ON 0x03
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#define MCI_OD (1 << 6)
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#define MMCICLOCK 0x004
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#define MCI_CLK_ENABLE (1 << 8)
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#define MCI_CLK_PWRSAVE (1 << 9)
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#define MCI_CLK_WIDEBUS (1 << 10)
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#define MCI_CLK_FLOWENA (1 << 12)
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#define MCI_CLK_INVERTOUT (1 << 13)
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#define MCI_CLK_SELECTIN (1 << 14)
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#define MMCIARGUMENT 0x008
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#define MMCICOMMAND 0x00c
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#define MCI_CPSM_RESPONSE (1 << 6)
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#define MCI_CPSM_LONGRSP (1 << 7)
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#define MCI_CPSM_INTERRUPT (1 << 8)
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#define MCI_CPSM_PENDING (1 << 9)
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#define MCI_CPSM_ENABLE (1 << 10)
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#define MCI_CPSM_PROGENA (1 << 11)
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#define MCI_CSPM_DATCMD (1 << 12)
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#define MCI_CSPM_MCIABORT (1 << 13)
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#define MCI_CSPM_CCSENABLE (1 << 14)
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#define MCI_CSPM_CCSDISABLE (1 << 15)
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#define MMCIRESPCMD 0x010
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#define MMCIRESPONSE0 0x014
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#define MMCIRESPONSE1 0x018
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#define MMCIRESPONSE2 0x01c
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#define MMCIRESPONSE3 0x020
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#define MMCIDATATIMER 0x024
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#define MMCIDATALENGTH 0x028
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#define MMCIDATACTRL 0x02c
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#define MCI_DPSM_ENABLE (1 << 0)
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#define MCI_DPSM_DIRECTION (1 << 1)
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#define MCI_DPSM_MODE (1 << 2)
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#define MCI_DPSM_DMAENABLE (1 << 3)
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#define MMCIDATACNT 0x030
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#define MMCISTATUS 0x034
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#define MCI_CMDCRCFAIL (1 << 0)
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#define MCI_DATACRCFAIL (1 << 1)
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#define MCI_CMDTIMEOUT (1 << 2)
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#define MCI_DATATIMEOUT (1 << 3)
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#define MCI_TXUNDERRUN (1 << 4)
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#define MCI_RXOVERRUN (1 << 5)
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#define MCI_CMDRESPEND (1 << 6)
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#define MCI_CMDSENT (1 << 7)
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#define MCI_DATAEND (1 << 8)
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#define MCI_DATABLOCKEND (1 << 10)
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#define MCI_CMDACTIVE (1 << 11)
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#define MCI_TXACTIVE (1 << 12)
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#define MCI_RXACTIVE (1 << 13)
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#define MCI_TXFIFOHALFEMPTY (1 << 14)
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#define MCI_RXFIFOHALFFULL (1 << 15)
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#define MCI_TXFIFOFULL (1 << 16)
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#define MCI_RXFIFOFULL (1 << 17)
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#define MCI_TXFIFOEMPTY (1 << 18)
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#define MCI_RXFIFOEMPTY (1 << 19)
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#define MCI_TXDATAAVLBL (1 << 20)
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#define MCI_RXDATAAVLBL (1 << 21)
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#define MCI_SDIOINTR (1 << 22)
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#define MCI_PROGDONE (1 << 23)
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#define MCI_ATACMDCOMPL (1 << 24)
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#define MCI_SDIOINTOPER (1 << 25)
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#define MCI_CCSTIMEOUT (1 << 26)
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#define MMCICLEAR 0x038
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#define MCI_CMDCRCFAILCLR (1 << 0)
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#define MCI_DATACRCFAILCLR (1 << 1)
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#define MCI_CMDTIMEOUTCLR (1 << 2)
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#define MCI_DATATIMEOUTCLR (1 << 3)
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#define MCI_TXUNDERRUNCLR (1 << 4)
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#define MCI_RXOVERRUNCLR (1 << 5)
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#define MCI_CMDRESPENDCLR (1 << 6)
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#define MCI_CMDSENTCLR (1 << 7)
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#define MCI_DATAENDCLR (1 << 8)
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#define MCI_DATABLOCKENDCLR (1 << 10)
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#define MMCIMASK0 0x03c
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#define MCI_CMDCRCFAILMASK (1 << 0)
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#define MCI_DATACRCFAILMASK (1 << 1)
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#define MCI_CMDTIMEOUTMASK (1 << 2)
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#define MCI_DATATIMEOUTMASK (1 << 3)
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#define MCI_TXUNDERRUNMASK (1 << 4)
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#define MCI_RXOVERRUNMASK (1 << 5)
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#define MCI_CMDRESPENDMASK (1 << 6)
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#define MCI_CMDSENTMASK (1 << 7)
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#define MCI_DATAENDMASK (1 << 8)
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#define MCI_DATABLOCKENDMASK (1 << 10)
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#define MCI_CMDACTIVEMASK (1 << 11)
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#define MCI_TXACTIVEMASK (1 << 12)
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#define MCI_RXACTIVEMASK (1 << 13)
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#define MCI_TXFIFOHALFEMPTYMASK (1 << 14)
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#define MCI_RXFIFOHALFFULLMASK (1 << 15)
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#define MCI_TXFIFOFULLMASK (1 << 16)
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#define MCI_RXFIFOFULLMASK (1 << 17)
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#define MCI_TXFIFOEMPTYMASK (1 << 18)
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#define MCI_RXFIFOEMPTYMASK (1 << 19)
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#define MCI_TXDATAAVLBLMASK (1 << 20)
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#define MCI_RXDATAAVLBLMASK (1 << 21)
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#define MCI_SDIOINTMASK (1 << 22)
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#define MCI_PROGDONEMASK (1 << 23)
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#define MCI_ATACMDCOMPLMASK (1 << 24)
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#define MCI_SDIOINTOPERMASK (1 << 25)
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#define MCI_CCSTIMEOUTMASK (1 << 26)
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#define MMCIMASK1 0x040
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#define MMCIFIFOCNT 0x044
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#define MCICCSTIMER 0x058
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#define MMCIFIFO 0x080 /* to 0x0bc */
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#define MCI_IRQENABLE \
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(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \
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MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \
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MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK)
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#define MCI_IRQ_PIO \
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(MCI_RXDATAAVLBLMASK | MCI_TXDATAAVLBLMASK | MCI_RXFIFOEMPTYMASK | \
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MCI_TXFIFOEMPTYMASK | MCI_RXFIFOFULLMASK | MCI_TXFIFOFULLMASK | \
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MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK | \
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MCI_RXACTIVEMASK | MCI_TXACTIVEMASK)
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/*
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* The size of the FIFO in bytes.
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*/
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#define MCI_FIFOSIZE (16*4)
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#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
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#define NR_SG 32
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struct clk;
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struct msmsdcc_nc_dmadata {
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dmov_box cmd[NR_SG];
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uint32_t cmdptr;
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};
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struct msmsdcc_dma_data {
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struct msmsdcc_nc_dmadata *nc;
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dma_addr_t nc_busaddr;
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dma_addr_t cmd_busaddr;
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dma_addr_t cmdptr_busaddr;
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struct msm_dmov_cmd hdr;
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enum dma_data_direction dir;
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struct scatterlist *sg;
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int num_ents;
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int channel;
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struct msmsdcc_host *host;
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int busy; /* Set if DM is busy */
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int active;
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unsigned int result;
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struct msm_dmov_errdata err;
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};
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struct msmsdcc_pio_data {
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struct scatterlist *sg;
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unsigned int sg_len;
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unsigned int sg_off;
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};
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struct msmsdcc_curr_req {
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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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unsigned int xfer_size; /* Total data size */
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unsigned int xfer_remain; /* Bytes remaining to send */
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unsigned int data_xfered; /* Bytes acked by BLKEND irq */
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int got_dataend;
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int user_pages;
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};
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struct msmsdcc_stats {
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unsigned int reqs;
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unsigned int cmds;
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unsigned int cmdpoll_hits;
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unsigned int cmdpoll_misses;
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};
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struct msmsdcc_host {
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struct resource *cmd_irqres;
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struct resource *memres;
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struct resource *dmares;
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void __iomem *base;
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int pdev_id;
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unsigned int stat_irq;
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struct msmsdcc_curr_req curr;
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struct mmc_host *mmc;
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struct clk *clk; /* main MMC bus clock */
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struct clk *pclk; /* SDCC peripheral bus clock */
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unsigned int clks_on; /* set if clocks are enabled */
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struct timer_list busclk_timer;
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unsigned int eject; /* eject state */
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spinlock_t lock;
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unsigned int clk_rate; /* Current clock rate */
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unsigned int pclk_rate;
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u32 pwr;
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u32 saved_irq0mask; /* MMCIMASK0 reg value */
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struct msm_mmc_platform_data *plat;
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struct timer_list timer;
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unsigned int oldstat;
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struct msmsdcc_dma_data dma;
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struct msmsdcc_pio_data pio;
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int cmdpoll;
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struct msmsdcc_stats stats;
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struct tasklet_struct dma_tlet;
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/* Command parameters */
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unsigned int cmd_timeout;
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unsigned int cmd_pio_irqmask;
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unsigned int cmd_datactrl;
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struct mmc_command *cmd_cmd;
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u32 cmd_c;
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bool gpio_config_status;
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bool prog_scan;
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bool prog_enable;
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};
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#endif
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