1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
21c6a0718SPierre Ossman /*
31c6a0718SPierre Ossman * tifm_sd.c - TI FlashMedia driver
41c6a0718SPierre Ossman *
51c6a0718SPierre Ossman * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
61c6a0718SPierre Ossman *
71c6a0718SPierre Ossman * Special thanks to Brad Campbell for extensive testing of this driver.
81c6a0718SPierre Ossman */
91c6a0718SPierre Ossman
101c6a0718SPierre Ossman
111c6a0718SPierre Ossman #include <linux/tifm.h>
121c6a0718SPierre Ossman #include <linux/mmc/host.h>
131c6a0718SPierre Ossman #include <linux/highmem.h>
141c6a0718SPierre Ossman #include <linux/scatterlist.h>
1588b47679SPaul Gortmaker #include <linux/module.h>
161c6a0718SPierre Ossman #include <asm/io.h>
171c6a0718SPierre Ossman
181c6a0718SPierre Ossman #define DRIVER_NAME "tifm_sd"
191c6a0718SPierre Ossman #define DRIVER_VERSION "0.8"
201c6a0718SPierre Ossman
2190ab5ee9SRusty Russell static bool no_dma = 0;
2290ab5ee9SRusty Russell static bool fixed_timeout = 0;
231c6a0718SPierre Ossman module_param(no_dma, bool, 0644);
241c6a0718SPierre Ossman module_param(fixed_timeout, bool, 0644);
251c6a0718SPierre Ossman
261c6a0718SPierre Ossman /* Constants here are mostly from OMAP5912 datasheet */
271c6a0718SPierre Ossman #define TIFM_MMCSD_RESET 0x0002
281c6a0718SPierre Ossman #define TIFM_MMCSD_CLKMASK 0x03ff
291c6a0718SPierre Ossman #define TIFM_MMCSD_POWER 0x0800
301c6a0718SPierre Ossman #define TIFM_MMCSD_4BBUS 0x8000
311c6a0718SPierre Ossman #define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */
321c6a0718SPierre Ossman #define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */
331c6a0718SPierre Ossman #define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */
341c6a0718SPierre Ossman #define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */
351c6a0718SPierre Ossman #define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */
361c6a0718SPierre Ossman #define TIFM_MMCSD_READ 0x8000
371c6a0718SPierre Ossman
381c6a0718SPierre Ossman #define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */
391c6a0718SPierre Ossman #define TIFM_MMCSD_EOC 0x0001 /* end of command phase */
401c6a0718SPierre Ossman #define TIFM_MMCSD_CD 0x0002 /* card detect */
411c6a0718SPierre Ossman #define TIFM_MMCSD_CB 0x0004 /* card enter busy state */
421c6a0718SPierre Ossman #define TIFM_MMCSD_BRS 0x0008 /* block received/sent */
431c6a0718SPierre Ossman #define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */
441c6a0718SPierre Ossman #define TIFM_MMCSD_DTO 0x0020 /* data time-out */
451c6a0718SPierre Ossman #define TIFM_MMCSD_DCRC 0x0040 /* data crc error */
461c6a0718SPierre Ossman #define TIFM_MMCSD_CTO 0x0080 /* command time-out */
471c6a0718SPierre Ossman #define TIFM_MMCSD_CCRC 0x0100 /* command crc error */
481c6a0718SPierre Ossman #define TIFM_MMCSD_AF 0x0400 /* fifo almost full */
491c6a0718SPierre Ossman #define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */
501c6a0718SPierre Ossman #define TIFM_MMCSD_OCRB 0x1000 /* OCR busy */
511c6a0718SPierre Ossman #define TIFM_MMCSD_CIRQ 0x2000 /* card irq (cmd40/sdio) */
521c6a0718SPierre Ossman #define TIFM_MMCSD_CERR 0x4000 /* card status error */
531c6a0718SPierre Ossman
541c6a0718SPierre Ossman #define TIFM_MMCSD_ODTO 0x0040 /* open drain / extended timeout */
551c6a0718SPierre Ossman #define TIFM_MMCSD_CARD_RO 0x0200 /* card is read-only */
561c6a0718SPierre Ossman
571c6a0718SPierre Ossman #define TIFM_MMCSD_FIFO_SIZE 0x0020
581c6a0718SPierre Ossman
591c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R0 0x0000
601c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R1 0x0100
611c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R2 0x0200
621c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R3 0x0300
631c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R4 0x0400
641c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R5 0x0500
651c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R6 0x0600
661c6a0718SPierre Ossman
671c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_BUSY 0x0800
681c6a0718SPierre Ossman
691c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BC 0x0000
701c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BCR 0x1000
711c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_AC 0x2000
721c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_ADTC 0x3000
731c6a0718SPierre Ossman
741c6a0718SPierre Ossman #define TIFM_MMCSD_MAX_BLOCK_SIZE 0x0800UL
751c6a0718SPierre Ossman
760b05c977SUlf Hansson #define TIFM_MMCSD_REQ_TIMEOUT_MS 1000
770b05c977SUlf Hansson
781c6a0718SPierre Ossman enum {
791c6a0718SPierre Ossman CMD_READY = 0x0001,
801c6a0718SPierre Ossman FIFO_READY = 0x0002,
811c6a0718SPierre Ossman BRS_READY = 0x0004,
821c6a0718SPierre Ossman SCMD_ACTIVE = 0x0008,
831c6a0718SPierre Ossman SCMD_READY = 0x0010,
841c6a0718SPierre Ossman CARD_BUSY = 0x0020,
851c6a0718SPierre Ossman DATA_CARRY = 0x0040
861c6a0718SPierre Ossman };
871c6a0718SPierre Ossman
881c6a0718SPierre Ossman struct tifm_sd {
891c6a0718SPierre Ossman struct tifm_dev *dev;
901c6a0718SPierre Ossman
911c6a0718SPierre Ossman unsigned short eject:1,
921c6a0718SPierre Ossman open_drain:1,
931c6a0718SPierre Ossman no_dma:1;
941c6a0718SPierre Ossman unsigned short cmd_flags;
951c6a0718SPierre Ossman
961c6a0718SPierre Ossman unsigned int clk_freq;
971c6a0718SPierre Ossman unsigned int clk_div;
981c6a0718SPierre Ossman unsigned long timeout_jiffies;
991c6a0718SPierre Ossman
1001c6a0718SPierre Ossman struct tasklet_struct finish_tasklet;
1011c6a0718SPierre Ossman struct timer_list timer;
1021c6a0718SPierre Ossman struct mmc_request *req;
1031c6a0718SPierre Ossman
1041c6a0718SPierre Ossman int sg_len;
1051c6a0718SPierre Ossman int sg_pos;
1061c6a0718SPierre Ossman unsigned int block_pos;
1071c6a0718SPierre Ossman struct scatterlist bounce_buf;
1081c6a0718SPierre Ossman unsigned char bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE];
1091c6a0718SPierre Ossman };
1101c6a0718SPierre Ossman
1111c6a0718SPierre Ossman /* for some reason, host won't respond correctly to readw/writew */
tifm_sd_read_fifo(struct tifm_sd * host,struct page * pg,unsigned int off,unsigned int cnt)1121c6a0718SPierre Ossman static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg,
1131c6a0718SPierre Ossman unsigned int off, unsigned int cnt)
1141c6a0718SPierre Ossman {
1151c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
1161c6a0718SPierre Ossman unsigned char *buf;
1171c6a0718SPierre Ossman unsigned int pos = 0, val;
1181c6a0718SPierre Ossman
119*4526cdafSAdrian Hunter buf = kmap_local_page(pg) + off;
1201c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) {
1211c6a0718SPierre Ossman buf[pos++] = host->bounce_buf_data[0];
1221c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY;
1231c6a0718SPierre Ossman }
1241c6a0718SPierre Ossman
1251c6a0718SPierre Ossman while (pos < cnt) {
1261c6a0718SPierre Ossman val = readl(sock->addr + SOCK_MMCSD_DATA);
1271c6a0718SPierre Ossman buf[pos++] = val & 0xff;
1281c6a0718SPierre Ossman if (pos == cnt) {
1291c6a0718SPierre Ossman host->bounce_buf_data[0] = (val >> 8) & 0xff;
1301c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY;
1311c6a0718SPierre Ossman break;
1321c6a0718SPierre Ossman }
1331c6a0718SPierre Ossman buf[pos++] = (val >> 8) & 0xff;
1341c6a0718SPierre Ossman }
135*4526cdafSAdrian Hunter kunmap_local(buf - off);
1361c6a0718SPierre Ossman }
1371c6a0718SPierre Ossman
tifm_sd_write_fifo(struct tifm_sd * host,struct page * pg,unsigned int off,unsigned int cnt)1381c6a0718SPierre Ossman static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
1391c6a0718SPierre Ossman unsigned int off, unsigned int cnt)
1401c6a0718SPierre Ossman {
1411c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
1421c6a0718SPierre Ossman unsigned char *buf;
1431c6a0718SPierre Ossman unsigned int pos = 0, val;
1441c6a0718SPierre Ossman
145*4526cdafSAdrian Hunter buf = kmap_local_page(pg) + off;
1461c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) {
1471c6a0718SPierre Ossman val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00);
1481c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA);
1491c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY;
1501c6a0718SPierre Ossman }
1511c6a0718SPierre Ossman
1521c6a0718SPierre Ossman while (pos < cnt) {
1531c6a0718SPierre Ossman val = buf[pos++];
1541c6a0718SPierre Ossman if (pos == cnt) {
1551c6a0718SPierre Ossman host->bounce_buf_data[0] = val & 0xff;
1561c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY;
1571c6a0718SPierre Ossman break;
1581c6a0718SPierre Ossman }
1591c6a0718SPierre Ossman val |= (buf[pos++] << 8) & 0xff00;
1601c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA);
1611c6a0718SPierre Ossman }
162*4526cdafSAdrian Hunter kunmap_local(buf - off);
1631c6a0718SPierre Ossman }
1641c6a0718SPierre Ossman
tifm_sd_transfer_data(struct tifm_sd * host)1651c6a0718SPierre Ossman static void tifm_sd_transfer_data(struct tifm_sd *host)
1661c6a0718SPierre Ossman {
1671c6a0718SPierre Ossman struct mmc_data *r_data = host->req->cmd->data;
1681c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg;
1691c6a0718SPierre Ossman unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2;
1701c6a0718SPierre Ossman unsigned int p_off, p_cnt;
1711c6a0718SPierre Ossman struct page *pg;
1721c6a0718SPierre Ossman
1731c6a0718SPierre Ossman if (host->sg_pos == host->sg_len)
1741c6a0718SPierre Ossman return;
1751c6a0718SPierre Ossman while (t_size) {
1761c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos;
1771c6a0718SPierre Ossman if (!cnt) {
1781c6a0718SPierre Ossman host->block_pos = 0;
1791c6a0718SPierre Ossman host->sg_pos++;
1801c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) {
1811c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE)
182ce636452SRoel Kluin && (host->cmd_flags & DATA_CARRY))
1831c6a0718SPierre Ossman writel(host->bounce_buf_data[0],
1841c6a0718SPierre Ossman host->dev->addr
1851c6a0718SPierre Ossman + SOCK_MMCSD_DATA);
1861c6a0718SPierre Ossman
1871c6a0718SPierre Ossman return;
1881c6a0718SPierre Ossman }
1891c6a0718SPierre Ossman cnt = sg[host->sg_pos].length;
1901c6a0718SPierre Ossman }
1911c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos;
1921c6a0718SPierre Ossman
19345711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT);
1941c6a0718SPierre Ossman p_off = offset_in_page(off);
1951c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off;
1961c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt);
1971c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size);
1981c6a0718SPierre Ossman
1991c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_READ)
2001c6a0718SPierre Ossman tifm_sd_read_fifo(host, pg, p_off, p_cnt);
2011c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_WRITE)
2021c6a0718SPierre Ossman tifm_sd_write_fifo(host, pg, p_off, p_cnt);
2031c6a0718SPierre Ossman
2041c6a0718SPierre Ossman t_size -= p_cnt;
2051c6a0718SPierre Ossman host->block_pos += p_cnt;
2061c6a0718SPierre Ossman }
2071c6a0718SPierre Ossman }
2081c6a0718SPierre Ossman
tifm_sd_copy_page(struct page * dst,unsigned int dst_off,struct page * src,unsigned int src_off,unsigned int count)2091c6a0718SPierre Ossman static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off,
2101c6a0718SPierre Ossman struct page *src, unsigned int src_off,
2111c6a0718SPierre Ossman unsigned int count)
2121c6a0718SPierre Ossman {
213*4526cdafSAdrian Hunter unsigned char *src_buf = kmap_local_page(src) + src_off;
214*4526cdafSAdrian Hunter unsigned char *dst_buf = kmap_local_page(dst) + dst_off;
2151c6a0718SPierre Ossman
2161c6a0718SPierre Ossman memcpy(dst_buf, src_buf, count);
2171c6a0718SPierre Ossman
218*4526cdafSAdrian Hunter kunmap_local(dst_buf - dst_off);
219*4526cdafSAdrian Hunter kunmap_local(src_buf - src_off);
2201c6a0718SPierre Ossman }
2211c6a0718SPierre Ossman
tifm_sd_bounce_block(struct tifm_sd * host,struct mmc_data * r_data)2221c6a0718SPierre Ossman static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data)
2231c6a0718SPierre Ossman {
2241c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg;
2251c6a0718SPierre Ossman unsigned int t_size = r_data->blksz;
2261c6a0718SPierre Ossman unsigned int off, cnt;
2271c6a0718SPierre Ossman unsigned int p_off, p_cnt;
2281c6a0718SPierre Ossman struct page *pg;
2291c6a0718SPierre Ossman
2301c6a0718SPierre Ossman dev_dbg(&host->dev->dev, "bouncing block\n");
2311c6a0718SPierre Ossman while (t_size) {
2321c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos;
2331c6a0718SPierre Ossman if (!cnt) {
2341c6a0718SPierre Ossman host->block_pos = 0;
2351c6a0718SPierre Ossman host->sg_pos++;
2361c6a0718SPierre Ossman if (host->sg_pos == host->sg_len)
2371c6a0718SPierre Ossman return;
2381c6a0718SPierre Ossman cnt = sg[host->sg_pos].length;
2391c6a0718SPierre Ossman }
2401c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos;
2411c6a0718SPierre Ossman
24245711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT);
2431c6a0718SPierre Ossman p_off = offset_in_page(off);
2441c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off;
2451c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt);
2461c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size);
2471c6a0718SPierre Ossman
2481c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE)
24945711f1aSJens Axboe tifm_sd_copy_page(sg_page(&host->bounce_buf),
2501c6a0718SPierre Ossman r_data->blksz - t_size,
2511c6a0718SPierre Ossman pg, p_off, p_cnt);
2521c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_READ)
25345711f1aSJens Axboe tifm_sd_copy_page(pg, p_off, sg_page(&host->bounce_buf),
2541c6a0718SPierre Ossman r_data->blksz - t_size, p_cnt);
2551c6a0718SPierre Ossman
2561c6a0718SPierre Ossman t_size -= p_cnt;
2571c6a0718SPierre Ossman host->block_pos += p_cnt;
2581c6a0718SPierre Ossman }
2591c6a0718SPierre Ossman }
2601c6a0718SPierre Ossman
tifm_sd_set_dma_data(struct tifm_sd * host,struct mmc_data * r_data)261d97956f8SAdrian Bunk static int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data)
2621c6a0718SPierre Ossman {
2631c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
2641c6a0718SPierre Ossman unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz;
2651c6a0718SPierre Ossman unsigned int dma_len, dma_blk_cnt, dma_off;
2661c6a0718SPierre Ossman struct scatterlist *sg = NULL;
2671c6a0718SPierre Ossman
2681c6a0718SPierre Ossman if (host->sg_pos == host->sg_len)
2691c6a0718SPierre Ossman return 1;
2701c6a0718SPierre Ossman
2711c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) {
2721c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY;
2731c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data);
2741c6a0718SPierre Ossman if (host->sg_pos == host->sg_len)
2751c6a0718SPierre Ossman return 1;
2761c6a0718SPierre Ossman }
2771c6a0718SPierre Ossman
2781c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos;
2791c6a0718SPierre Ossman if (!dma_len) {
2801c6a0718SPierre Ossman host->block_pos = 0;
2811c6a0718SPierre Ossman host->sg_pos++;
2821c6a0718SPierre Ossman if (host->sg_pos == host->sg_len)
2831c6a0718SPierre Ossman return 1;
2841c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]);
2851c6a0718SPierre Ossman }
2861c6a0718SPierre Ossman
2871c6a0718SPierre Ossman if (dma_len < t_size) {
2881c6a0718SPierre Ossman dma_blk_cnt = dma_len / r_data->blksz;
2891c6a0718SPierre Ossman dma_off = host->block_pos;
2901c6a0718SPierre Ossman host->block_pos += dma_blk_cnt * r_data->blksz;
2911c6a0718SPierre Ossman } else {
2921c6a0718SPierre Ossman dma_blk_cnt = TIFM_DMA_TSIZE;
2931c6a0718SPierre Ossman dma_off = host->block_pos;
2941c6a0718SPierre Ossman host->block_pos += t_size;
2951c6a0718SPierre Ossman }
2961c6a0718SPierre Ossman
2971c6a0718SPierre Ossman if (dma_blk_cnt)
2981c6a0718SPierre Ossman sg = &r_data->sg[host->sg_pos];
2991c6a0718SPierre Ossman else if (dma_len) {
30036bbdc30SAdrian Hunter if (r_data->flags & MMC_DATA_WRITE)
3011c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data);
30236bbdc30SAdrian Hunter else
3031c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY;
3041c6a0718SPierre Ossman
3051c6a0718SPierre Ossman sg = &host->bounce_buf;
3061c6a0718SPierre Ossman dma_off = 0;
3071c6a0718SPierre Ossman dma_blk_cnt = 1;
3081c6a0718SPierre Ossman } else
3091c6a0718SPierre Ossman return 1;
3101c6a0718SPierre Ossman
3111c6a0718SPierre Ossman dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt);
3121c6a0718SPierre Ossman writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS);
3131c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE)
3141c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN,
3151c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL);
3161c6a0718SPierre Ossman else
3171c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_EN,
3181c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL);
3191c6a0718SPierre Ossman
3201c6a0718SPierre Ossman return 0;
3211c6a0718SPierre Ossman }
3221c6a0718SPierre Ossman
tifm_sd_op_flags(struct mmc_command * cmd)3231c6a0718SPierre Ossman static unsigned int tifm_sd_op_flags(struct mmc_command *cmd)
3241c6a0718SPierre Ossman {
3251c6a0718SPierre Ossman unsigned int rc = 0;
3261c6a0718SPierre Ossman
3271c6a0718SPierre Ossman switch (mmc_resp_type(cmd)) {
3281c6a0718SPierre Ossman case MMC_RSP_NONE:
3291c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R0;
3301c6a0718SPierre Ossman break;
3311c6a0718SPierre Ossman case MMC_RSP_R1B:
332a5c83eb2SGustavo A. R. Silva rc |= TIFM_MMCSD_RSP_BUSY;
333df561f66SGustavo A. R. Silva fallthrough;
3341c6a0718SPierre Ossman case MMC_RSP_R1:
3351c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R1;
3361c6a0718SPierre Ossman break;
3371c6a0718SPierre Ossman case MMC_RSP_R2:
3381c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R2;
3391c6a0718SPierre Ossman break;
3401c6a0718SPierre Ossman case MMC_RSP_R3:
3411c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R3;
3421c6a0718SPierre Ossman break;
3431c6a0718SPierre Ossman default:
3441c6a0718SPierre Ossman BUG();
3451c6a0718SPierre Ossman }
3461c6a0718SPierre Ossman
3471c6a0718SPierre Ossman switch (mmc_cmd_type(cmd)) {
3481c6a0718SPierre Ossman case MMC_CMD_BC:
3491c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BC;
3501c6a0718SPierre Ossman break;
3511c6a0718SPierre Ossman case MMC_CMD_BCR:
3521c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BCR;
3531c6a0718SPierre Ossman break;
3541c6a0718SPierre Ossman case MMC_CMD_AC:
3551c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_AC;
3561c6a0718SPierre Ossman break;
3571c6a0718SPierre Ossman case MMC_CMD_ADTC:
3581c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_ADTC;
3591c6a0718SPierre Ossman break;
3601c6a0718SPierre Ossman default:
3611c6a0718SPierre Ossman BUG();
3621c6a0718SPierre Ossman }
3631c6a0718SPierre Ossman return rc;
3641c6a0718SPierre Ossman }
3651c6a0718SPierre Ossman
tifm_sd_exec(struct tifm_sd * host,struct mmc_command * cmd)3661c6a0718SPierre Ossman static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd)
3671c6a0718SPierre Ossman {
3681c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
3691c6a0718SPierre Ossman unsigned int cmd_mask = tifm_sd_op_flags(cmd);
3701c6a0718SPierre Ossman
3711c6a0718SPierre Ossman if (host->open_drain)
3721c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_ODTO;
3731c6a0718SPierre Ossman
3741c6a0718SPierre Ossman if (cmd->data && (cmd->data->flags & MMC_DATA_READ))
3751c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_READ;
3761c6a0718SPierre Ossman
3771c6a0718SPierre Ossman dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n",
3781c6a0718SPierre Ossman cmd->opcode, cmd->arg, cmd_mask);
3791c6a0718SPierre Ossman
3801c6a0718SPierre Ossman writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH);
3811c6a0718SPierre Ossman writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW);
3821c6a0718SPierre Ossman writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND);
3831c6a0718SPierre Ossman }
3841c6a0718SPierre Ossman
tifm_sd_fetch_resp(struct mmc_command * cmd,struct tifm_dev * sock)3851c6a0718SPierre Ossman static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock)
3861c6a0718SPierre Ossman {
3871c6a0718SPierre Ossman cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16)
3881c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18);
3891c6a0718SPierre Ossman cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16)
3901c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10);
3911c6a0718SPierre Ossman cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16)
3921c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08);
3931c6a0718SPierre Ossman cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16)
3941c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00);
3951c6a0718SPierre Ossman }
3961c6a0718SPierre Ossman
tifm_sd_check_status(struct tifm_sd * host)3971c6a0718SPierre Ossman static void tifm_sd_check_status(struct tifm_sd *host)
3981c6a0718SPierre Ossman {
3991c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
4001c6a0718SPierre Ossman struct mmc_command *cmd = host->req->cmd;
4011c6a0718SPierre Ossman
40217b0429dSPierre Ossman if (cmd->error)
4031c6a0718SPierre Ossman goto finish_request;
4041c6a0718SPierre Ossman
4051c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY))
4061c6a0718SPierre Ossman return;
4071c6a0718SPierre Ossman
4081c6a0718SPierre Ossman if (cmd->data) {
40917b0429dSPierre Ossman if (cmd->data->error) {
4101c6a0718SPierre Ossman if ((host->cmd_flags & SCMD_ACTIVE)
4111c6a0718SPierre Ossman && !(host->cmd_flags & SCMD_READY))
4121c6a0718SPierre Ossman return;
4131c6a0718SPierre Ossman
4141c6a0718SPierre Ossman goto finish_request;
4151c6a0718SPierre Ossman }
4161c6a0718SPierre Ossman
4171c6a0718SPierre Ossman if (!(host->cmd_flags & BRS_READY))
4181c6a0718SPierre Ossman return;
4191c6a0718SPierre Ossman
4201c6a0718SPierre Ossman if (!(host->no_dma || (host->cmd_flags & FIFO_READY)))
4211c6a0718SPierre Ossman return;
4221c6a0718SPierre Ossman
4231c6a0718SPierre Ossman if (cmd->data->flags & MMC_DATA_WRITE) {
4241c6a0718SPierre Ossman if (host->req->stop) {
4251c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) {
4261c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE;
4271c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB
4281c6a0718SPierre Ossman | readl(sock->addr
4291c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE),
4301c6a0718SPierre Ossman sock->addr
4311c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE);
4321c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop);
4331c6a0718SPierre Ossman return;
4341c6a0718SPierre Ossman } else {
4351c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY)
4361c6a0718SPierre Ossman || (host->cmd_flags & CARD_BUSY))
4371c6a0718SPierre Ossman return;
4381c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB)
4391c6a0718SPierre Ossman & readl(sock->addr
4401c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE),
4411c6a0718SPierre Ossman sock->addr
4421c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE);
4431c6a0718SPierre Ossman }
4441c6a0718SPierre Ossman } else {
4451c6a0718SPierre Ossman if (host->cmd_flags & CARD_BUSY)
4461c6a0718SPierre Ossman return;
4471c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB)
4481c6a0718SPierre Ossman & readl(sock->addr
4491c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE),
4501c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE);
4511c6a0718SPierre Ossman }
4521c6a0718SPierre Ossman } else {
4531c6a0718SPierre Ossman if (host->req->stop) {
4541c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) {
4551c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE;
4561c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop);
4571c6a0718SPierre Ossman return;
4581c6a0718SPierre Ossman } else {
4591c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY))
4601c6a0718SPierre Ossman return;
4611c6a0718SPierre Ossman }
4621c6a0718SPierre Ossman }
4631c6a0718SPierre Ossman }
4641c6a0718SPierre Ossman }
4651c6a0718SPierre Ossman finish_request:
4661c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet);
4671c6a0718SPierre Ossman }
4681c6a0718SPierre Ossman
4691c6a0718SPierre Ossman /* Called from interrupt handler */
tifm_sd_data_event(struct tifm_dev * sock)4701c6a0718SPierre Ossman static void tifm_sd_data_event(struct tifm_dev *sock)
4711c6a0718SPierre Ossman {
4721c6a0718SPierre Ossman struct tifm_sd *host;
4731c6a0718SPierre Ossman unsigned int fifo_status = 0;
4741c6a0718SPierre Ossman struct mmc_data *r_data = NULL;
4751c6a0718SPierre Ossman
4761c6a0718SPierre Ossman spin_lock(&sock->lock);
4771c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
4781c6a0718SPierre Ossman fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
4791c6a0718SPierre Ossman dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n",
4801c6a0718SPierre Ossman fifo_status, host->cmd_flags);
4811c6a0718SPierre Ossman
4821c6a0718SPierre Ossman if (host->req) {
4831c6a0718SPierre Ossman r_data = host->req->cmd->data;
4841c6a0718SPierre Ossman
4851c6a0718SPierre Ossman if (r_data && (fifo_status & TIFM_FIFO_READY)) {
4861c6a0718SPierre Ossman if (tifm_sd_set_dma_data(host, r_data)) {
4871c6a0718SPierre Ossman host->cmd_flags |= FIFO_READY;
4881c6a0718SPierre Ossman tifm_sd_check_status(host);
4891c6a0718SPierre Ossman }
4901c6a0718SPierre Ossman }
4911c6a0718SPierre Ossman }
4921c6a0718SPierre Ossman
4931c6a0718SPierre Ossman writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
4941c6a0718SPierre Ossman spin_unlock(&sock->lock);
4951c6a0718SPierre Ossman }
4961c6a0718SPierre Ossman
4971c6a0718SPierre Ossman /* Called from interrupt handler */
tifm_sd_card_event(struct tifm_dev * sock)4981c6a0718SPierre Ossman static void tifm_sd_card_event(struct tifm_dev *sock)
4991c6a0718SPierre Ossman {
5001c6a0718SPierre Ossman struct tifm_sd *host;
5011c6a0718SPierre Ossman unsigned int host_status = 0;
50217b0429dSPierre Ossman int cmd_error = 0;
5031c6a0718SPierre Ossman struct mmc_command *cmd = NULL;
5041c6a0718SPierre Ossman
5051c6a0718SPierre Ossman spin_lock(&sock->lock);
5061c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
5071c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
5081c6a0718SPierre Ossman dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
5091c6a0718SPierre Ossman host_status, host->cmd_flags);
5101c6a0718SPierre Ossman
5111c6a0718SPierre Ossman if (host->req) {
5121c6a0718SPierre Ossman cmd = host->req->cmd;
5131c6a0718SPierre Ossman
5141c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_ERRMASK) {
5151c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_ERRMASK,
5161c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS);
5171c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_CTO)
51817b0429dSPierre Ossman cmd_error = -ETIMEDOUT;
5191c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CCRC)
52017b0429dSPierre Ossman cmd_error = -EILSEQ;
5211c6a0718SPierre Ossman
5221c6a0718SPierre Ossman if (cmd->data) {
5231c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_DTO)
52417b0429dSPierre Ossman cmd->data->error = -ETIMEDOUT;
5251c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_DCRC)
52617b0429dSPierre Ossman cmd->data->error = -EILSEQ;
5271c6a0718SPierre Ossman }
5281c6a0718SPierre Ossman
5291c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL,
5301c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
5311c6a0718SPierre Ossman writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
5321c6a0718SPierre Ossman
5331c6a0718SPierre Ossman if (host->req->stop) {
5341c6a0718SPierre Ossman if (host->cmd_flags & SCMD_ACTIVE) {
5351c6a0718SPierre Ossman host->req->stop->error = cmd_error;
5361c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY;
5371c6a0718SPierre Ossman } else {
5381c6a0718SPierre Ossman cmd->error = cmd_error;
5391c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE;
5401c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop);
5411c6a0718SPierre Ossman goto done;
5421c6a0718SPierre Ossman }
5431c6a0718SPierre Ossman } else
5441c6a0718SPierre Ossman cmd->error = cmd_error;
5451c6a0718SPierre Ossman } else {
5461c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) {
5471c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY)) {
5481c6a0718SPierre Ossman host->cmd_flags |= CMD_READY;
5491c6a0718SPierre Ossman tifm_sd_fetch_resp(cmd, sock);
5501c6a0718SPierre Ossman } else if (host->cmd_flags & SCMD_ACTIVE) {
5511c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY;
5521c6a0718SPierre Ossman tifm_sd_fetch_resp(host->req->stop,
5531c6a0718SPierre Ossman sock);
5541c6a0718SPierre Ossman }
5551c6a0718SPierre Ossman }
5561c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_BRS)
5571c6a0718SPierre Ossman host->cmd_flags |= BRS_READY;
5581c6a0718SPierre Ossman }
5591c6a0718SPierre Ossman
5601c6a0718SPierre Ossman if (host->no_dma && cmd->data) {
5611c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_AE)
5621c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_AE,
5631c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS);
5641c6a0718SPierre Ossman
5651c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF
5661c6a0718SPierre Ossman | TIFM_MMCSD_BRS)) {
5671c6a0718SPierre Ossman tifm_sd_transfer_data(host);
5681c6a0718SPierre Ossman host_status &= ~TIFM_MMCSD_AE;
5691c6a0718SPierre Ossman }
5701c6a0718SPierre Ossman }
5711c6a0718SPierre Ossman
5721c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_EOFB)
5731c6a0718SPierre Ossman host->cmd_flags &= ~CARD_BUSY;
5741c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CB)
5751c6a0718SPierre Ossman host->cmd_flags |= CARD_BUSY;
5761c6a0718SPierre Ossman
5771c6a0718SPierre Ossman tifm_sd_check_status(host);
5781c6a0718SPierre Ossman }
5791c6a0718SPierre Ossman done:
5801c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
5811c6a0718SPierre Ossman spin_unlock(&sock->lock);
5821c6a0718SPierre Ossman }
5831c6a0718SPierre Ossman
tifm_sd_set_data_timeout(struct tifm_sd * host,struct mmc_data * data)5841c6a0718SPierre Ossman static void tifm_sd_set_data_timeout(struct tifm_sd *host,
5851c6a0718SPierre Ossman struct mmc_data *data)
5861c6a0718SPierre Ossman {
5871c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
5881c6a0718SPierre Ossman unsigned int data_timeout = data->timeout_clks;
5891c6a0718SPierre Ossman
5901c6a0718SPierre Ossman if (fixed_timeout)
5911c6a0718SPierre Ossman return;
5921c6a0718SPierre Ossman
5931c6a0718SPierre Ossman data_timeout += data->timeout_ns /
5941c6a0718SPierre Ossman ((1000000000UL / host->clk_freq) * host->clk_div);
5951c6a0718SPierre Ossman
5961c6a0718SPierre Ossman if (data_timeout < 0xffff) {
5971c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
5981c6a0718SPierre Ossman writel((~TIFM_MMCSD_DPE)
5991c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
6001c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
6011c6a0718SPierre Ossman } else {
6021c6a0718SPierre Ossman data_timeout = (data_timeout >> 10) + 1;
6031c6a0718SPierre Ossman if (data_timeout > 0xffff)
6041c6a0718SPierre Ossman data_timeout = 0; /* set to unlimited */
6051c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
6061c6a0718SPierre Ossman writel(TIFM_MMCSD_DPE
6071c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
6081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
6091c6a0718SPierre Ossman }
6101c6a0718SPierre Ossman }
6111c6a0718SPierre Ossman
tifm_sd_request(struct mmc_host * mmc,struct mmc_request * mrq)6121c6a0718SPierre Ossman static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
6131c6a0718SPierre Ossman {
6141c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc);
6151c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
6161c6a0718SPierre Ossman unsigned long flags;
6171c6a0718SPierre Ossman struct mmc_data *r_data = mrq->cmd->data;
6181c6a0718SPierre Ossman
6191c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
6201c6a0718SPierre Ossman if (host->eject) {
621255d01afSPierre Ossman mrq->cmd->error = -ENOMEDIUM;
6221c6a0718SPierre Ossman goto err_out;
6231c6a0718SPierre Ossman }
6241c6a0718SPierre Ossman
6251c6a0718SPierre Ossman if (host->req) {
626a3c76eb9SGirish K S pr_err("%s : unfinished request detected\n",
627d1b26863SKay Sievers dev_name(&sock->dev));
628255d01afSPierre Ossman mrq->cmd->error = -ETIMEDOUT;
629255d01afSPierre Ossman goto err_out;
630255d01afSPierre Ossman }
631255d01afSPierre Ossman
6321c6a0718SPierre Ossman host->cmd_flags = 0;
6331c6a0718SPierre Ossman host->block_pos = 0;
6341c6a0718SPierre Ossman host->sg_pos = 0;
6351c6a0718SPierre Ossman
636b37a0506SAlex Dubov if (mrq->data && !is_power_of_2(mrq->data->blksz))
637b37a0506SAlex Dubov host->no_dma = 1;
638b37a0506SAlex Dubov else
639b37a0506SAlex Dubov host->no_dma = no_dma ? 1 : 0;
640b37a0506SAlex Dubov
6411c6a0718SPierre Ossman if (r_data) {
6421c6a0718SPierre Ossman tifm_sd_set_data_timeout(host, r_data);
6431c6a0718SPierre Ossman
6441c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop)
6451c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB
6461c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
6471c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE);
6481c6a0718SPierre Ossman
6491c6a0718SPierre Ossman if (host->no_dma) {
6501c6a0718SPierre Ossman writel(TIFM_MMCSD_BUFINT
6511c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
6521c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE);
6531c6a0718SPierre Ossman writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8)
6541c6a0718SPierre Ossman | (TIFM_MMCSD_FIFO_SIZE - 1),
6551c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
6561c6a0718SPierre Ossman
6571c6a0718SPierre Ossman host->sg_len = r_data->sg_len;
6581c6a0718SPierre Ossman } else {
6591c6a0718SPierre Ossman sg_init_one(&host->bounce_buf, host->bounce_buf_data,
6601c6a0718SPierre Ossman r_data->blksz);
6611c6a0718SPierre Ossman
6621c6a0718SPierre Ossman if(1 != tifm_map_sg(sock, &host->bounce_buf, 1,
6631c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE
664b048457cSChristophe JAILLET ? DMA_TO_DEVICE
665b048457cSChristophe JAILLET : DMA_FROM_DEVICE)) {
666a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n",
667d1b26863SKay Sievers dev_name(&sock->dev));
668b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM;
6691c6a0718SPierre Ossman goto err_out;
6701c6a0718SPierre Ossman }
6711c6a0718SPierre Ossman host->sg_len = tifm_map_sg(sock, r_data->sg,
6721c6a0718SPierre Ossman r_data->sg_len,
6731c6a0718SPierre Ossman r_data->flags
6741c6a0718SPierre Ossman & MMC_DATA_WRITE
675b048457cSChristophe JAILLET ? DMA_TO_DEVICE
676b048457cSChristophe JAILLET : DMA_FROM_DEVICE);
6771c6a0718SPierre Ossman if (host->sg_len < 1) {
678a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n",
679d1b26863SKay Sievers dev_name(&sock->dev));
6801c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1,
6811c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE
682b048457cSChristophe JAILLET ? DMA_TO_DEVICE
683b048457cSChristophe JAILLET : DMA_FROM_DEVICE);
684b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM;
6851c6a0718SPierre Ossman goto err_out;
6861c6a0718SPierre Ossman }
6871c6a0718SPierre Ossman
6881c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL,
6891c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
6901c6a0718SPierre Ossman writel(ilog2(r_data->blksz) - 2,
6911c6a0718SPierre Ossman sock->addr + SOCK_FIFO_PAGE_SIZE);
6921c6a0718SPierre Ossman writel(TIFM_FIFO_ENABLE,
6931c6a0718SPierre Ossman sock->addr + SOCK_FIFO_CONTROL);
6941c6a0718SPierre Ossman writel(TIFM_FIFO_INTMASK,
6951c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
6961c6a0718SPierre Ossman
6971c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE)
6981c6a0718SPierre Ossman writel(TIFM_MMCSD_TXDE,
6991c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
7001c6a0718SPierre Ossman else
7011c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE,
7021c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
7031c6a0718SPierre Ossman
7041c6a0718SPierre Ossman tifm_sd_set_dma_data(host, r_data);
7051c6a0718SPierre Ossman }
7061c6a0718SPierre Ossman
7071c6a0718SPierre Ossman writel(r_data->blocks - 1,
7081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_NUM_BLOCKS);
7091c6a0718SPierre Ossman writel(r_data->blksz - 1,
7101c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BLOCK_LEN);
7111c6a0718SPierre Ossman }
7121c6a0718SPierre Ossman
7131c6a0718SPierre Ossman host->req = mrq;
7141c6a0718SPierre Ossman mod_timer(&host->timer, jiffies + host->timeout_jiffies);
7151c6a0718SPierre Ossman writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
7161c6a0718SPierre Ossman sock->addr + SOCK_CONTROL);
7171c6a0718SPierre Ossman tifm_sd_exec(host, mrq->cmd);
7181c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
7191c6a0718SPierre Ossman return;
7201c6a0718SPierre Ossman
7211c6a0718SPierre Ossman err_out:
722255d01afSPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
7231c6a0718SPierre Ossman mmc_request_done(mmc, mrq);
7241c6a0718SPierre Ossman }
7251c6a0718SPierre Ossman
tifm_sd_end_cmd(struct tasklet_struct * t)726c36dd042SEmil Renner Berthing static void tifm_sd_end_cmd(struct tasklet_struct *t)
7271c6a0718SPierre Ossman {
728c36dd042SEmil Renner Berthing struct tifm_sd *host = from_tasklet(host, t, finish_tasklet);
7291c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
7301c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock);
7311c6a0718SPierre Ossman struct mmc_request *mrq;
7321c6a0718SPierre Ossman struct mmc_data *r_data = NULL;
7331c6a0718SPierre Ossman unsigned long flags;
7341c6a0718SPierre Ossman
7351c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
7361c6a0718SPierre Ossman
7371c6a0718SPierre Ossman del_timer(&host->timer);
7381c6a0718SPierre Ossman mrq = host->req;
7391c6a0718SPierre Ossman host->req = NULL;
7401c6a0718SPierre Ossman
7411c6a0718SPierre Ossman if (!mrq) {
742a3c76eb9SGirish K S pr_err(" %s : no request to complete?\n",
743d1b26863SKay Sievers dev_name(&sock->dev));
7441c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
7451c6a0718SPierre Ossman return;
7461c6a0718SPierre Ossman }
7471c6a0718SPierre Ossman
7481c6a0718SPierre Ossman r_data = mrq->cmd->data;
7491c6a0718SPierre Ossman if (r_data) {
7501c6a0718SPierre Ossman if (host->no_dma) {
7511c6a0718SPierre Ossman writel((~TIFM_MMCSD_BUFINT)
7521c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
7531c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE);
7541c6a0718SPierre Ossman } else {
7551c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1,
7561c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE)
757b048457cSChristophe JAILLET ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
7581c6a0718SPierre Ossman tifm_unmap_sg(sock, r_data->sg, r_data->sg_len,
7591c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE)
760b048457cSChristophe JAILLET ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
7611c6a0718SPierre Ossman }
7621c6a0718SPierre Ossman
7631c6a0718SPierre Ossman r_data->bytes_xfered = r_data->blocks
7641c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1;
7651c6a0718SPierre Ossman r_data->bytes_xfered *= r_data->blksz;
7661c6a0718SPierre Ossman r_data->bytes_xfered += r_data->blksz
7671c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1;
7681c6a0718SPierre Ossman }
7691c6a0718SPierre Ossman
7701c6a0718SPierre Ossman writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
7711c6a0718SPierre Ossman sock->addr + SOCK_CONTROL);
7721c6a0718SPierre Ossman
7731c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
7741c6a0718SPierre Ossman mmc_request_done(mmc, mrq);
7751c6a0718SPierre Ossman }
7761c6a0718SPierre Ossman
tifm_sd_abort(struct timer_list * t)7772ee4f620SKees Cook static void tifm_sd_abort(struct timer_list *t)
7781c6a0718SPierre Ossman {
7792ee4f620SKees Cook struct tifm_sd *host = from_timer(host, t, timer);
7801c6a0718SPierre Ossman
781a3c76eb9SGirish K S pr_err("%s : card failed to respond for a long period of time "
7821c6a0718SPierre Ossman "(%x, %x)\n",
783d1b26863SKay Sievers dev_name(&host->dev->dev), host->req->cmd->opcode, host->cmd_flags);
7841c6a0718SPierre Ossman
7851c6a0718SPierre Ossman tifm_eject(host->dev);
7861c6a0718SPierre Ossman }
7871c6a0718SPierre Ossman
tifm_sd_ios(struct mmc_host * mmc,struct mmc_ios * ios)7881c6a0718SPierre Ossman static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios)
7891c6a0718SPierre Ossman {
7901c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc);
7911c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
7921c6a0718SPierre Ossman unsigned int clk_div1, clk_div2;
7931c6a0718SPierre Ossman unsigned long flags;
7941c6a0718SPierre Ossman
7951c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
7961c6a0718SPierre Ossman
7971c6a0718SPierre Ossman dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, "
7981c6a0718SPierre Ossman "chip_select = %x, power_mode = %x, bus_width = %x\n",
7991c6a0718SPierre Ossman ios->clock, ios->vdd, ios->bus_mode, ios->chip_select,
8001c6a0718SPierre Ossman ios->power_mode, ios->bus_width);
8011c6a0718SPierre Ossman
8021c6a0718SPierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) {
8031c6a0718SPierre Ossman writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG),
8041c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG);
8051c6a0718SPierre Ossman } else {
8061c6a0718SPierre Ossman writel((~TIFM_MMCSD_4BBUS)
8071c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG),
8081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG);
8091c6a0718SPierre Ossman }
8101c6a0718SPierre Ossman
8111c6a0718SPierre Ossman if (ios->clock) {
8121c6a0718SPierre Ossman clk_div1 = 20000000 / ios->clock;
8131c6a0718SPierre Ossman if (!clk_div1)
8141c6a0718SPierre Ossman clk_div1 = 1;
8151c6a0718SPierre Ossman
8161c6a0718SPierre Ossman clk_div2 = 24000000 / ios->clock;
8171c6a0718SPierre Ossman if (!clk_div2)
8181c6a0718SPierre Ossman clk_div2 = 1;
8191c6a0718SPierre Ossman
8201c6a0718SPierre Ossman if ((20000000 / clk_div1) > ios->clock)
8211c6a0718SPierre Ossman clk_div1++;
8221c6a0718SPierre Ossman if ((24000000 / clk_div2) > ios->clock)
8231c6a0718SPierre Ossman clk_div2++;
8241c6a0718SPierre Ossman if ((20000000 / clk_div1) > (24000000 / clk_div2)) {
8251c6a0718SPierre Ossman host->clk_freq = 20000000;
8261c6a0718SPierre Ossman host->clk_div = clk_div1;
8271c6a0718SPierre Ossman writel((~TIFM_CTRL_FAST_CLK)
8281c6a0718SPierre Ossman & readl(sock->addr + SOCK_CONTROL),
8291c6a0718SPierre Ossman sock->addr + SOCK_CONTROL);
8301c6a0718SPierre Ossman } else {
8311c6a0718SPierre Ossman host->clk_freq = 24000000;
8321c6a0718SPierre Ossman host->clk_div = clk_div2;
8331c6a0718SPierre Ossman writel(TIFM_CTRL_FAST_CLK
8341c6a0718SPierre Ossman | readl(sock->addr + SOCK_CONTROL),
8351c6a0718SPierre Ossman sock->addr + SOCK_CONTROL);
8361c6a0718SPierre Ossman }
8371c6a0718SPierre Ossman } else {
8381c6a0718SPierre Ossman host->clk_div = 0;
8391c6a0718SPierre Ossman }
8401c6a0718SPierre Ossman host->clk_div &= TIFM_MMCSD_CLKMASK;
8411c6a0718SPierre Ossman writel(host->clk_div
8421c6a0718SPierre Ossman | ((~TIFM_MMCSD_CLKMASK)
8431c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG)),
8441c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG);
8451c6a0718SPierre Ossman
8461c6a0718SPierre Ossman host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN);
8471c6a0718SPierre Ossman
8481c6a0718SPierre Ossman /* chip_select : maybe later */
8491c6a0718SPierre Ossman //vdd
8501c6a0718SPierre Ossman //power is set before probe / after remove
8511c6a0718SPierre Ossman
8521c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
8531c6a0718SPierre Ossman }
8541c6a0718SPierre Ossman
tifm_sd_ro(struct mmc_host * mmc)8551c6a0718SPierre Ossman static int tifm_sd_ro(struct mmc_host *mmc)
8561c6a0718SPierre Ossman {
8571c6a0718SPierre Ossman int rc = 0;
8581c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc);
8591c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
8601c6a0718SPierre Ossman unsigned long flags;
8611c6a0718SPierre Ossman
8621c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
8631c6a0718SPierre Ossman if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE))
8641c6a0718SPierre Ossman rc = 1;
8651c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
8661c6a0718SPierre Ossman return rc;
8671c6a0718SPierre Ossman }
8681c6a0718SPierre Ossman
8691c6a0718SPierre Ossman static const struct mmc_host_ops tifm_sd_ops = {
8701c6a0718SPierre Ossman .request = tifm_sd_request,
8711c6a0718SPierre Ossman .set_ios = tifm_sd_ios,
8721c6a0718SPierre Ossman .get_ro = tifm_sd_ro
8731c6a0718SPierre Ossman };
8741c6a0718SPierre Ossman
tifm_sd_initialize_host(struct tifm_sd * host)8751c6a0718SPierre Ossman static int tifm_sd_initialize_host(struct tifm_sd *host)
8761c6a0718SPierre Ossman {
8771c6a0718SPierre Ossman int rc;
8781c6a0718SPierre Ossman unsigned int host_status = 0;
8791c6a0718SPierre Ossman struct tifm_dev *sock = host->dev;
8801c6a0718SPierre Ossman
8811c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
8821c6a0718SPierre Ossman host->clk_div = 61;
8831c6a0718SPierre Ossman host->clk_freq = 20000000;
8841c6a0718SPierre Ossman writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL);
8851c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER,
8861c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG);
8871c6a0718SPierre Ossman
8881c6a0718SPierre Ossman /* wait up to 0.51 sec for reset */
8891c6a0718SPierre Ossman for (rc = 32; rc <= 256; rc <<= 1) {
8901c6a0718SPierre Ossman if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) {
8911c6a0718SPierre Ossman rc = 0;
8921c6a0718SPierre Ossman break;
8931c6a0718SPierre Ossman }
8941c6a0718SPierre Ossman msleep(rc);
8951c6a0718SPierre Ossman }
8961c6a0718SPierre Ossman
8971c6a0718SPierre Ossman if (rc) {
898a3c76eb9SGirish K S pr_err("%s : controller failed to reset\n",
899d1b26863SKay Sievers dev_name(&sock->dev));
9001c6a0718SPierre Ossman return -ENODEV;
9011c6a0718SPierre Ossman }
9021c6a0718SPierre Ossman
9031c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
9041c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER,
9051c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG);
9061c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
9071c6a0718SPierre Ossman
9081c6a0718SPierre Ossman // command timeout fixed to 64 clocks for now
9091c6a0718SPierre Ossman writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO);
9101c6a0718SPierre Ossman writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND);
9111c6a0718SPierre Ossman
9121c6a0718SPierre Ossman for (rc = 16; rc <= 64; rc <<= 1) {
9131c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
9141c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
9151c6a0718SPierre Ossman if (!(host_status & TIFM_MMCSD_ERRMASK)
9161c6a0718SPierre Ossman && (host_status & TIFM_MMCSD_EOC)) {
9171c6a0718SPierre Ossman rc = 0;
9181c6a0718SPierre Ossman break;
9191c6a0718SPierre Ossman }
9201c6a0718SPierre Ossman msleep(rc);
9211c6a0718SPierre Ossman }
9221c6a0718SPierre Ossman
9231c6a0718SPierre Ossman if (rc) {
924a3c76eb9SGirish K S pr_err("%s : card not ready - probe failed on initialization\n",
925d1b26863SKay Sievers dev_name(&sock->dev));
9261c6a0718SPierre Ossman return -ENODEV;
9271c6a0718SPierre Ossman }
9281c6a0718SPierre Ossman
9291c6a0718SPierre Ossman writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC
9301c6a0718SPierre Ossman | TIFM_MMCSD_ERRMASK,
9311c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE);
9321c6a0718SPierre Ossman
9331c6a0718SPierre Ossman return 0;
9341c6a0718SPierre Ossman }
9351c6a0718SPierre Ossman
tifm_sd_probe(struct tifm_dev * sock)9361c6a0718SPierre Ossman static int tifm_sd_probe(struct tifm_dev *sock)
9371c6a0718SPierre Ossman {
9381c6a0718SPierre Ossman struct mmc_host *mmc;
9391c6a0718SPierre Ossman struct tifm_sd *host;
9401c6a0718SPierre Ossman int rc = -EIO;
9411c6a0718SPierre Ossman
9421c6a0718SPierre Ossman if (!(TIFM_SOCK_STATE_OCCUPIED
9431c6a0718SPierre Ossman & readl(sock->addr + SOCK_PRESENT_STATE))) {
9446606110dSJoe Perches pr_warn("%s : card gone, unexpectedly\n",
945d1b26863SKay Sievers dev_name(&sock->dev));
9461c6a0718SPierre Ossman return rc;
9471c6a0718SPierre Ossman }
9481c6a0718SPierre Ossman
9491c6a0718SPierre Ossman mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev);
9501c6a0718SPierre Ossman if (!mmc)
9511c6a0718SPierre Ossman return -ENOMEM;
9521c6a0718SPierre Ossman
9531c6a0718SPierre Ossman host = mmc_priv(mmc);
9541c6a0718SPierre Ossman tifm_set_drvdata(sock, mmc);
9551c6a0718SPierre Ossman host->dev = sock;
9560b05c977SUlf Hansson host->timeout_jiffies = msecs_to_jiffies(TIFM_MMCSD_REQ_TIMEOUT_MS);
9570b05c977SUlf Hansson /*
9580b05c977SUlf Hansson * We use a fixed request timeout of 1s, hence inform the core about it.
9590b05c977SUlf Hansson * A future improvement should instead respect the cmd->busy_timeout.
9600b05c977SUlf Hansson */
9610b05c977SUlf Hansson mmc->max_busy_timeout = TIFM_MMCSD_REQ_TIMEOUT_MS;
9621c6a0718SPierre Ossman
963c36dd042SEmil Renner Berthing tasklet_setup(&host->finish_tasklet, tifm_sd_end_cmd);
9642ee4f620SKees Cook timer_setup(&host->timer, tifm_sd_abort, 0);
9651c6a0718SPierre Ossman
9661c6a0718SPierre Ossman mmc->ops = &tifm_sd_ops;
9671c6a0718SPierre Ossman mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
96823af6039SPierre Ossman mmc->caps = MMC_CAP_4_BIT_DATA;
9691c6a0718SPierre Ossman mmc->f_min = 20000000 / 60;
9701c6a0718SPierre Ossman mmc->f_max = 24000000;
9711c6a0718SPierre Ossman
9721c6a0718SPierre Ossman mmc->max_blk_count = 2048;
973a36274e0SMartin K. Petersen mmc->max_segs = mmc->max_blk_count;
9741c6a0718SPierre Ossman mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE);
9751c6a0718SPierre Ossman mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size;
9761c6a0718SPierre Ossman mmc->max_req_size = mmc->max_seg_size;
9771c6a0718SPierre Ossman
9781c6a0718SPierre Ossman sock->card_event = tifm_sd_card_event;
9791c6a0718SPierre Ossman sock->data_event = tifm_sd_data_event;
9801c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host);
9811c6a0718SPierre Ossman
9821c6a0718SPierre Ossman if (!rc)
9831c6a0718SPierre Ossman rc = mmc_add_host(mmc);
9841c6a0718SPierre Ossman if (!rc)
9851c6a0718SPierre Ossman return 0;
9861c6a0718SPierre Ossman
9871c6a0718SPierre Ossman mmc_free_host(mmc);
9881c6a0718SPierre Ossman return rc;
9891c6a0718SPierre Ossman }
9901c6a0718SPierre Ossman
tifm_sd_remove(struct tifm_dev * sock)9911c6a0718SPierre Ossman static void tifm_sd_remove(struct tifm_dev *sock)
9921c6a0718SPierre Ossman {
9931c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock);
9941c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc);
9951c6a0718SPierre Ossman unsigned long flags;
9961c6a0718SPierre Ossman
9971c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
9981c6a0718SPierre Ossman host->eject = 1;
9991c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
10001c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
10011c6a0718SPierre Ossman
10021c6a0718SPierre Ossman tasklet_kill(&host->finish_tasklet);
10031c6a0718SPierre Ossman
10041c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags);
10051c6a0718SPierre Ossman if (host->req) {
10061c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL,
10071c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
10081c6a0718SPierre Ossman writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
100917b0429dSPierre Ossman host->req->cmd->error = -ENOMEDIUM;
10101c6a0718SPierre Ossman if (host->req->stop)
101117b0429dSPierre Ossman host->req->stop->error = -ENOMEDIUM;
10121c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet);
10131c6a0718SPierre Ossman }
10141c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags);
10151c6a0718SPierre Ossman mmc_remove_host(mmc);
10161c6a0718SPierre Ossman dev_dbg(&sock->dev, "after remove\n");
10171c6a0718SPierre Ossman
10181c6a0718SPierre Ossman mmc_free_host(mmc);
10191c6a0718SPierre Ossman }
10201c6a0718SPierre Ossman
10211c6a0718SPierre Ossman #ifdef CONFIG_PM
10221c6a0718SPierre Ossman
tifm_sd_suspend(struct tifm_dev * sock,pm_message_t state)10231c6a0718SPierre Ossman static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
10241c6a0718SPierre Ossman {
1025ccbd4830SUlf Hansson return 0;
10261c6a0718SPierre Ossman }
10271c6a0718SPierre Ossman
tifm_sd_resume(struct tifm_dev * sock)10281c6a0718SPierre Ossman static int tifm_sd_resume(struct tifm_dev *sock)
10291c6a0718SPierre Ossman {
10301c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock);
10311c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc);
10321c6a0718SPierre Ossman int rc;
10331c6a0718SPierre Ossman
10341c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host);
10351c6a0718SPierre Ossman dev_dbg(&sock->dev, "resume initialize %d\n", rc);
10361c6a0718SPierre Ossman
10371c6a0718SPierre Ossman if (rc)
10381c6a0718SPierre Ossman host->eject = 1;
10391c6a0718SPierre Ossman
10401c6a0718SPierre Ossman return rc;
10411c6a0718SPierre Ossman }
10421c6a0718SPierre Ossman
10431c6a0718SPierre Ossman #else
10441c6a0718SPierre Ossman
10451c6a0718SPierre Ossman #define tifm_sd_suspend NULL
10461c6a0718SPierre Ossman #define tifm_sd_resume NULL
10471c6a0718SPierre Ossman
10481c6a0718SPierre Ossman #endif /* CONFIG_PM */
10491c6a0718SPierre Ossman
10501c6a0718SPierre Ossman static struct tifm_device_id tifm_sd_id_tbl[] = {
10511c6a0718SPierre Ossman { TIFM_TYPE_SD }, { }
10521c6a0718SPierre Ossman };
10531c6a0718SPierre Ossman
10541c6a0718SPierre Ossman static struct tifm_driver tifm_sd_driver = {
10551c6a0718SPierre Ossman .driver = {
10561c6a0718SPierre Ossman .name = DRIVER_NAME,
10571c6a0718SPierre Ossman .owner = THIS_MODULE
10581c6a0718SPierre Ossman },
10591c6a0718SPierre Ossman .id_table = tifm_sd_id_tbl,
10601c6a0718SPierre Ossman .probe = tifm_sd_probe,
10611c6a0718SPierre Ossman .remove = tifm_sd_remove,
10621c6a0718SPierre Ossman .suspend = tifm_sd_suspend,
10631c6a0718SPierre Ossman .resume = tifm_sd_resume
10641c6a0718SPierre Ossman };
10651c6a0718SPierre Ossman
tifm_sd_init(void)10661c6a0718SPierre Ossman static int __init tifm_sd_init(void)
10671c6a0718SPierre Ossman {
10681c6a0718SPierre Ossman return tifm_register_driver(&tifm_sd_driver);
10691c6a0718SPierre Ossman }
10701c6a0718SPierre Ossman
tifm_sd_exit(void)10711c6a0718SPierre Ossman static void __exit tifm_sd_exit(void)
10721c6a0718SPierre Ossman {
10731c6a0718SPierre Ossman tifm_unregister_driver(&tifm_sd_driver);
10741c6a0718SPierre Ossman }
10751c6a0718SPierre Ossman
10761c6a0718SPierre Ossman MODULE_AUTHOR("Alex Dubov");
10771c6a0718SPierre Ossman MODULE_DESCRIPTION("TI FlashMedia SD driver");
10781c6a0718SPierre Ossman MODULE_LICENSE("GPL");
10791c6a0718SPierre Ossman MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl);
10801c6a0718SPierre Ossman MODULE_VERSION(DRIVER_VERSION);
10811c6a0718SPierre Ossman
10821c6a0718SPierre Ossman module_init(tifm_sd_init);
10831c6a0718SPierre Ossman module_exit(tifm_sd_exit);
1084