| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| /* ****************** SDIO CARD Interface Functions **************************/ |
| |
| #include <linux/types.h> |
| #include <linux/netdevice.h> |
| #include <linux/pci.h> |
| #include <linux/pci_ids.h> |
| #include <linux/sched.h> |
| #include <linux/completion.h> |
| #include <linux/scatterlist.h> |
| #include <linux/mmc/sdio.h> |
| #include <linux/mmc/core.h> |
| #include <linux/mmc/sdio_func.h> |
| #include <linux/mmc/sdio_ids.h> |
| #include <linux/mmc/card.h> |
| #include <linux/mmc/host.h> |
| #include <linux/platform_device.h> |
| #include <linux/platform_data/brcmfmac-sdio.h> |
| #include <linux/suspend.h> |
| #include <linux/errno.h> |
| #include <linux/module.h> |
| #include <net/cfg80211.h> |
| |
| #include <defs.h> |
| #include <brcm_hw_ids.h> |
| #include <brcmu_utils.h> |
| #include <brcmu_wifi.h> |
| #include <soc.h> |
| #include "dhd_bus.h" |
| #include "dhd_dbg.h" |
| #include "sdio_host.h" |
| #include "sdio_chip.h" |
| |
| #define SDIOH_API_ACCESS_RETRY_LIMIT 2 |
| |
| #define SDIO_VENDOR_ID_BROADCOM 0x02d0 |
| |
| #define DMA_ALIGN_MASK 0x03 |
| |
| #define SDIO_FUNC1_BLOCKSIZE 64 |
| #define SDIO_FUNC2_BLOCKSIZE 512 |
| /* Maximum milliseconds to wait for F2 to come up */ |
| #define SDIO_WAIT_F2RDY 3000 |
| |
| |
| static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) |
| { |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); |
| struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
| |
| brcmf_dbg(INTR, "OOB intr triggered\n"); |
| |
| /* out-of-band interrupt is level-triggered which won't |
| * be cleared until dpc |
| */ |
| if (sdiodev->irq_en) { |
| disable_irq_nosync(irq); |
| sdiodev->irq_en = false; |
| } |
| |
| brcmf_sdbrcm_isr(sdiodev->bus); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) |
| { |
| struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); |
| struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
| |
| brcmf_dbg(INTR, "IB intr triggered\n"); |
| |
| brcmf_sdbrcm_isr(sdiodev->bus); |
| } |
| |
| /* dummy handler for SDIO function 2 interrupt */ |
| static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) |
| { |
| } |
| |
| static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev) |
| { |
| bool is_err = false; |
| #ifdef CONFIG_PM_SLEEP |
| is_err = atomic_read(&sdiodev->suspend); |
| #endif |
| return is_err; |
| } |
| |
| static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, |
| wait_queue_head_t *wq) |
| { |
| #ifdef CONFIG_PM_SLEEP |
| int retry = 0; |
| while (atomic_read(&sdiodev->suspend) && retry++ != 30) |
| wait_event_timeout(*wq, false, HZ/100); |
| #endif |
| } |
| |
| int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) |
| { |
| int ret = 0; |
| u8 data; |
| unsigned long flags; |
| |
| if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
| brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", |
| sdiodev->pdata->oob_irq_nr); |
| ret = request_irq(sdiodev->pdata->oob_irq_nr, |
| brcmf_sdiod_oob_irqhandler, |
| sdiodev->pdata->oob_irq_flags, |
| "brcmf_oob_intr", |
| &sdiodev->func[1]->dev); |
| if (ret != 0) { |
| brcmf_err("request_irq failed %d\n", ret); |
| return ret; |
| } |
| sdiodev->oob_irq_requested = true; |
| spin_lock_init(&sdiodev->irq_en_lock); |
| spin_lock_irqsave(&sdiodev->irq_en_lock, flags); |
| sdiodev->irq_en = true; |
| spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); |
| |
| ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr); |
| if (ret != 0) { |
| brcmf_err("enable_irq_wake failed %d\n", ret); |
| return ret; |
| } |
| sdiodev->irq_wake = true; |
| |
| sdio_claim_host(sdiodev->func[1]); |
| |
| /* must configure SDIO_CCCR_IENx to enable irq */ |
| data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); |
| data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; |
| brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); |
| |
| /* redirect, configure and enable io for interrupt signal */ |
| data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; |
| if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) |
| data |= SDIO_SEPINT_ACT_HI; |
| brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); |
| |
| sdio_release_host(sdiodev->func[1]); |
| } else { |
| brcmf_dbg(SDIO, "Entering\n"); |
| sdio_claim_host(sdiodev->func[1]); |
| sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); |
| sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); |
| sdio_release_host(sdiodev->func[1]); |
| } |
| |
| return 0; |
| } |
| |
| int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) |
| { |
| brcmf_dbg(SDIO, "Entering\n"); |
| |
| if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { |
| sdio_claim_host(sdiodev->func[1]); |
| brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); |
| brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); |
| sdio_release_host(sdiodev->func[1]); |
| |
| if (sdiodev->oob_irq_requested) { |
| sdiodev->oob_irq_requested = false; |
| if (sdiodev->irq_wake) { |
| disable_irq_wake(sdiodev->pdata->oob_irq_nr); |
| sdiodev->irq_wake = false; |
| } |
| free_irq(sdiodev->pdata->oob_irq_nr, |
| &sdiodev->func[1]->dev); |
| sdiodev->irq_en = false; |
| } |
| } else { |
| sdio_claim_host(sdiodev->func[1]); |
| sdio_release_irq(sdiodev->func[2]); |
| sdio_release_irq(sdiodev->func[1]); |
| sdio_release_host(sdiodev->func[1]); |
| } |
| |
| return 0; |
| } |
| |
| static inline int brcmf_sdiod_f0_write_byte(struct brcmf_sdio_dev *sdiodev, |
| uint regaddr, u8 *byte) |
| { |
| struct sdio_func *sdfunc = sdiodev->func[0]; |
| int err_ret; |
| |
| /* |
| * Can only directly write to some F0 registers. |
| * Handle F2 enable/disable and Abort command |
| * as a special case. |
| */ |
| if ((regaddr == SDIO_CCCR_ABORT) || |
| (regaddr == SDIO_CCCR_IENx)) { |
| sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func), |
| GFP_KERNEL); |
| if (!sdfunc) |
| return -ENOMEM; |
| sdfunc->num = 0; |
| sdio_writeb(sdfunc, *byte, regaddr, &err_ret); |
| kfree(sdfunc); |
| } else if (regaddr < 0xF0) { |
| brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr); |
| err_ret = -EPERM; |
| } else { |
| sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret); |
| } |
| |
| return err_ret; |
| } |
| |
| static int brcmf_sdiod_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, |
| uint func, uint regaddr, u8 *byte) |
| { |
| int err_ret; |
| |
| brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr); |
| |
| brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait); |
| if (brcmf_sdiod_pm_resume_error(sdiodev)) |
| return -EIO; |
| |
| if (rw && func == 0) { |
| /* handle F0 separately */ |
| err_ret = brcmf_sdiod_f0_write_byte(sdiodev, regaddr, byte); |
| } else { |
| if (rw) /* CMD52 Write */ |
| sdio_writeb(sdiodev->func[func], *byte, regaddr, |
| &err_ret); |
| else if (func == 0) { |
| *byte = sdio_f0_readb(sdiodev->func[func], regaddr, |
| &err_ret); |
| } else { |
| *byte = sdio_readb(sdiodev->func[func], regaddr, |
| &err_ret); |
| } |
| } |
| |
| if (err_ret) { |
| /* |
| * SleepCSR register access can fail when |
| * waking up the device so reduce this noise |
| * in the logs. |
| */ |
| if (regaddr != SBSDIO_FUNC1_SLEEPCSR) |
| brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n", |
| rw ? "write" : "read", func, regaddr, *byte, |
| err_ret); |
| else |
| brcmf_dbg(SDIO, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n", |
| rw ? "write" : "read", func, regaddr, *byte, |
| err_ret); |
| } |
| return err_ret; |
| } |
| |
| static int brcmf_sdiod_request_word(struct brcmf_sdio_dev *sdiodev, uint rw, |
| uint func, uint addr, u32 *word, |
| uint nbytes) |
| { |
| int err_ret = -EIO; |
| |
| if (func == 0) { |
| brcmf_err("Only CMD52 allowed to F0\n"); |
| return -EINVAL; |
| } |
| |
| brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", |
| rw, func, addr, nbytes); |
| |
| brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait); |
| if (brcmf_sdiod_pm_resume_error(sdiodev)) |
| return -EIO; |
| |
| if (rw) { /* CMD52 Write */ |
| if (nbytes == 4) |
| sdio_writel(sdiodev->func[func], *word, addr, |
| &err_ret); |
| else if (nbytes == 2) |
| sdio_writew(sdiodev->func[func], (*word & 0xFFFF), |
| addr, &err_ret); |
| else |
| brcmf_err("Invalid nbytes: %d\n", nbytes); |
| } else { /* CMD52 Read */ |
| if (nbytes == 4) |
| *word = sdio_readl(sdiodev->func[func], addr, &err_ret); |
| else if (nbytes == 2) |
| *word = sdio_readw(sdiodev->func[func], addr, |
| &err_ret) & 0xFFFF; |
| else |
| brcmf_err("Invalid nbytes: %d\n", nbytes); |
| } |
| |
| if (err_ret) |
| brcmf_err("Failed to %s word, Err: 0x%08x\n", |
| rw ? "write" : "read", err_ret); |
| |
| return err_ret; |
| } |
| |
| static int |
| brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) |
| { |
| int err = 0, i; |
| u8 addr[3]; |
| s32 retry; |
| |
| addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; |
| addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; |
| addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; |
| |
| for (i = 0; i < 3; i++) { |
| retry = 0; |
| do { |
| if (retry) |
| usleep_range(1000, 2000); |
| err = brcmf_sdiod_request_byte(sdiodev, SDIOH_WRITE, |
| SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i, |
| &addr[i]); |
| } while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); |
| |
| if (err) { |
| brcmf_err("failed at addr:0x%0x\n", |
| SBSDIO_FUNC1_SBADDRLOW + i); |
| break; |
| } |
| } |
| |
| return err; |
| } |
| |
| static int |
| brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) |
| { |
| uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; |
| int err = 0; |
| |
| if (bar0 != sdiodev->sbwad) { |
| err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); |
| if (err) |
| return err; |
| |
| sdiodev->sbwad = bar0; |
| } |
| |
| *addr &= SBSDIO_SB_OFT_ADDR_MASK; |
| |
| if (width == 4) |
| *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; |
| |
| return 0; |
| } |
| |
| static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, |
| void *data, bool write) |
| { |
| u8 func_num, reg_size; |
| s32 retry = 0; |
| int ret; |
| |
| /* |
| * figure out how to read the register based on address range |
| * 0x00 ~ 0x7FF: function 0 CCCR and FBR |
| * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers |
| * The rest: function 1 silicon backplane core registers |
| */ |
| if ((addr & ~REG_F0_REG_MASK) == 0) { |
| func_num = SDIO_FUNC_0; |
| reg_size = 1; |
| } else if ((addr & ~REG_F1_MISC_MASK) == 0) { |
| func_num = SDIO_FUNC_1; |
| reg_size = 1; |
| } else { |
| func_num = SDIO_FUNC_1; |
| reg_size = 4; |
| |
| ret = brcmf_sdiod_addrprep(sdiodev, reg_size, &addr); |
| if (ret) |
| goto done; |
| } |
| |
| do { |
| if (!write) |
| memset(data, 0, reg_size); |
| if (retry) /* wait for 1 ms till bus get settled down */ |
| usleep_range(1000, 2000); |
| if (reg_size == 1) |
| ret = brcmf_sdiod_request_byte(sdiodev, write, |
| func_num, addr, data); |
| else |
| ret = brcmf_sdiod_request_word(sdiodev, write, |
| func_num, addr, data, 4); |
| } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); |
| |
| done: |
| if (ret != 0) |
| brcmf_err("failed with %d\n", ret); |
| |
| return ret; |
| } |
| |
| u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
| { |
| u8 data; |
| int retval; |
| |
| brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
| retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, false); |
| brcmf_dbg(SDIO, "data:0x%02x\n", data); |
| |
| if (ret) |
| *ret = retval; |
| |
| return data; |
| } |
| |
| u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) |
| { |
| u32 data; |
| int retval; |
| |
| brcmf_dbg(SDIO, "addr:0x%08x\n", addr); |
| retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, false); |
| brcmf_dbg(SDIO, "data:0x%08x\n", data); |
| |
| if (ret) |
| *ret = retval; |
| |
| return data; |
| } |
| |
| void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, |
| u8 data, int *ret) |
| { |
| int retval; |
| |
| brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); |
| retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, true); |
| |
| if (ret) |
| *ret = retval; |
| } |
| |
| void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, |
| u32 data, int *ret) |
| { |
| int retval; |
| |
| brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); |
| retval = brcmf_sdiod_regrw_helper(sdiodev, addr, &data, true); |
| |
| if (ret) |
| *ret = retval; |
| } |
| |
| static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, |
| bool write, u32 addr, struct sk_buff *pkt) |
| { |
| unsigned int req_sz; |
| |
| brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); |
| if (brcmf_sdiod_pm_resume_error(sdiodev)) |
| return -EIO; |
| |
| /* Single skb use the standard mmc interface */ |
| req_sz = pkt->len + 3; |
| req_sz &= (uint)~3; |
| |
| if (write) |
| return sdio_memcpy_toio(sdiodev->func[fn], addr, |
| ((u8 *)(pkt->data)), |
| req_sz); |
| else if (fn == 1) |
| return sdio_memcpy_fromio(sdiodev->func[fn], |
| ((u8 *)(pkt->data)), |
| addr, req_sz); |
| else |
| /* function 2 read is FIFO operation */ |
| return sdio_readsb(sdiodev->func[fn], |
| ((u8 *)(pkt->data)), addr, |
| req_sz); |
| } |
| |
| /** |
| * brcmf_sdiod_sglist_rw - SDIO interface function for block data access |
| * @sdiodev: brcmfmac sdio device |
| * @fn: SDIO function number |
| * @write: direction flag |
| * @addr: dongle memory address as source/destination |
| * @pkt: skb pointer |
| * |
| * This function takes the respbonsibility as the interface function to MMC |
| * stack for block data access. It assumes that the skb passed down by the |
| * caller has already been padded and aligned. |
| */ |
| static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, |
| bool write, u32 addr, |
| struct sk_buff_head *pktlist) |
| { |
| unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; |
| unsigned int max_req_sz, orig_offset, dst_offset; |
| unsigned short max_seg_cnt, seg_sz; |
| unsigned char *pkt_data, *orig_data, *dst_data; |
| struct sk_buff *pkt_next = NULL, *local_pkt_next; |
| struct sk_buff_head local_list, *target_list; |
| struct mmc_request mmc_req; |
| struct mmc_command mmc_cmd; |
| struct mmc_data mmc_dat; |
| struct sg_table st; |
| struct scatterlist *sgl; |
| int ret = 0; |
| |
| if (!pktlist->qlen) |
| return -EINVAL; |
| |
| brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); |
| if (brcmf_sdiod_pm_resume_error(sdiodev)) |
| return -EIO; |
| |
| target_list = pktlist; |
| /* for host with broken sg support, prepare a page aligned list */ |
| __skb_queue_head_init(&local_list); |
| if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { |
| req_sz = 0; |
| skb_queue_walk(pktlist, pkt_next) |
| req_sz += pkt_next->len; |
| req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); |
| while (req_sz > PAGE_SIZE) { |
| pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); |
| if (pkt_next == NULL) { |
| ret = -ENOMEM; |
| goto exit; |
| } |
| __skb_queue_tail(&local_list, pkt_next); |
| req_sz -= PAGE_SIZE; |
| } |
| pkt_next = brcmu_pkt_buf_get_skb(req_sz); |
| if (pkt_next == NULL) { |
| ret = -ENOMEM; |
| goto exit; |
| } |
| __skb_queue_tail(&local_list, pkt_next); |
| target_list = &local_list; |
| } |
| |
| func_blk_sz = sdiodev->func[fn]->cur_blksize; |
| max_req_sz = sdiodev->max_request_size; |
| max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, |
| target_list->qlen); |
| seg_sz = target_list->qlen; |
| pkt_offset = 0; |
| pkt_next = target_list->next; |
| |
| if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto exit; |
| } |
| |
| memset(&mmc_req, 0, sizeof(struct mmc_request)); |
| memset(&mmc_cmd, 0, sizeof(struct mmc_command)); |
| memset(&mmc_dat, 0, sizeof(struct mmc_data)); |
| |
| mmc_dat.sg = st.sgl; |
| mmc_dat.blksz = func_blk_sz; |
| mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; |
| mmc_cmd.opcode = SD_IO_RW_EXTENDED; |
| mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ |
| mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ |
| mmc_cmd.arg |= 1<<27; /* block mode */ |
| /* for function 1 the addr will be incremented */ |
| mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; |
| mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; |
| mmc_req.cmd = &mmc_cmd; |
| mmc_req.data = &mmc_dat; |
| |
| while (seg_sz) { |
| req_sz = 0; |
| sg_cnt = 0; |
| sgl = st.sgl; |
| /* prep sg table */ |
| while (pkt_next != (struct sk_buff *)target_list) { |
| pkt_data = pkt_next->data + pkt_offset; |
| sg_data_sz = pkt_next->len - pkt_offset; |
| if (sg_data_sz > sdiodev->max_segment_size) |
| sg_data_sz = sdiodev->max_segment_size; |
| if (sg_data_sz > max_req_sz - req_sz) |
| sg_data_sz = max_req_sz - req_sz; |
| |
| sg_set_buf(sgl, pkt_data, sg_data_sz); |
| |
| sg_cnt++; |
| sgl = sg_next(sgl); |
| req_sz += sg_data_sz; |
| pkt_offset += sg_data_sz; |
| if (pkt_offset == pkt_next->len) { |
| pkt_offset = 0; |
| pkt_next = pkt_next->next; |
| } |
| |
| if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) |
| break; |
| } |
| seg_sz -= sg_cnt; |
| |
| if (req_sz % func_blk_sz != 0) { |
| brcmf_err("sg request length %u is not %u aligned\n", |
| req_sz, func_blk_sz); |
| ret = -ENOTBLK; |
| goto exit; |
| } |
| |
| mmc_dat.sg_len = sg_cnt; |
| mmc_dat.blocks = req_sz / func_blk_sz; |
| mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ |
| mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ |
| /* incrementing addr for function 1 */ |
| if (fn == 1) |
| addr += req_sz; |
| |
| mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); |
| mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); |
| |
| ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; |
| if (ret != 0) { |
| brcmf_err("CMD53 sg block %s failed %d\n", |
| write ? "write" : "read", ret); |
| ret = -EIO; |
| break; |
| } |
| } |
| |
| if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { |
| local_pkt_next = local_list.next; |
| orig_offset = 0; |
| skb_queue_walk(pktlist, pkt_next) { |
| dst_offset = 0; |
| do { |
| req_sz = local_pkt_next->len - orig_offset; |
| req_sz = min_t(uint, pkt_next->len - dst_offset, |
| req_sz); |
| orig_data = local_pkt_next->data + orig_offset; |
| dst_data = pkt_next->data + dst_offset; |
| memcpy(dst_data, orig_data, req_sz); |
| orig_offset += req_sz; |
| dst_offset += req_sz; |
| if (orig_offset == local_pkt_next->len) { |
| orig_offset = 0; |
| local_pkt_next = local_pkt_next->next; |
| } |
| if (dst_offset == pkt_next->len) |
| break; |
| } while (!skb_queue_empty(&local_list)); |
| } |
| } |
| |
| exit: |
| sg_free_table(&st); |
| while ((pkt_next = __skb_dequeue(&local_list)) != NULL) |
| brcmu_pkt_buf_free_skb(pkt_next); |
| |
| return ret; |
| } |
| |
| int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
| { |
| struct sk_buff *mypkt; |
| int err; |
| |
| mypkt = brcmu_pkt_buf_get_skb(nbytes); |
| if (!mypkt) { |
| brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
| nbytes); |
| return -EIO; |
| } |
| |
| err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); |
| if (!err) |
| memcpy(buf, mypkt->data, nbytes); |
| |
| brcmu_pkt_buf_free_skb(mypkt); |
| return err; |
| } |
| |
| int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) |
| { |
| u32 addr = sdiodev->sbwad; |
| int err = 0; |
| |
| brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); |
| |
| err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
| if (err) |
| goto done; |
| |
| err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); |
| |
| done: |
| return err; |
| } |
| |
| int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, |
| struct sk_buff_head *pktq, uint totlen) |
| { |
| struct sk_buff *glom_skb; |
| struct sk_buff *skb; |
| u32 addr = sdiodev->sbwad; |
| int err = 0; |
| |
| brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", |
| addr, pktq->qlen); |
| |
| err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
| if (err) |
| goto done; |
| |
| if (pktq->qlen == 1) |
| err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
| pktq->next); |
| else if (!sdiodev->sg_support) { |
| glom_skb = brcmu_pkt_buf_get_skb(totlen); |
| if (!glom_skb) |
| return -ENOMEM; |
| err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, |
| glom_skb); |
| if (err) |
| goto done; |
| |
| skb_queue_walk(pktq, skb) { |
| memcpy(skb->data, glom_skb->data, skb->len); |
| skb_pull(glom_skb, skb->len); |
| } |
| } else |
| err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, |
| pktq); |
| |
| done: |
| return err; |
| } |
| |
| int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) |
| { |
| struct sk_buff *mypkt; |
| u32 addr = sdiodev->sbwad; |
| int err; |
| |
| mypkt = brcmu_pkt_buf_get_skb(nbytes); |
| if (!mypkt) { |
| brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", |
| nbytes); |
| return -EIO; |
| } |
| |
| memcpy(mypkt->data, buf, nbytes); |
| |
| err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
| |
| if (!err) |
| err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, |
| mypkt); |
| |
| brcmu_pkt_buf_free_skb(mypkt); |
| return err; |
| |
| } |
| |
| int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, |
| struct sk_buff_head *pktq) |
| { |
| struct sk_buff *skb; |
| u32 addr = sdiodev->sbwad; |
| int err; |
| |
| brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); |
| |
| err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); |
| if (err) |
| return err; |
| |
| if (pktq->qlen == 1 || !sdiodev->sg_support) |
| skb_queue_walk(pktq, skb) { |
| err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, |
| addr, skb); |
| if (err) |
| break; |
| } |
| else |
| err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, |
| pktq); |
| |
| return err; |
| } |
| |
| int |
| brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, |
| u8 *data, uint size) |
| { |
| int bcmerror = 0; |
| struct sk_buff *pkt; |
| u32 sdaddr; |
| uint dsize; |
| |
| dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); |
| pkt = dev_alloc_skb(dsize); |
| if (!pkt) { |
| brcmf_err("dev_alloc_skb failed: len %d\n", dsize); |
| return -EIO; |
| } |
| pkt->priority = 0; |
| |
| /* Determine initial transfer parameters */ |
| sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; |
| if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) |
| dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); |
| else |
| dsize = size; |
| |
| sdio_claim_host(sdiodev->func[1]); |
| |
| /* Do the transfer(s) */ |
| while (size) { |
| /* Set the backplane window to include the start address */ |
| bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); |
| if (bcmerror) |
| break; |
| |
| brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", |
| write ? "write" : "read", dsize, |
| sdaddr, address & SBSDIO_SBWINDOW_MASK); |
| |
| sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; |
| sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; |
| |
| skb_put(pkt, dsize); |
| if (write) |
| memcpy(pkt->data, data, dsize); |
| bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, |
| sdaddr, pkt); |
| if (bcmerror) { |
| brcmf_err("membytes transfer failed\n"); |
| break; |
| } |
| if (!write) |
| memcpy(data, pkt->data, dsize); |
| skb_trim(pkt, dsize); |
| |
| /* Adjust for next transfer (if any) */ |
| size -= dsize; |
| if (size) { |
| data += dsize; |
| address += dsize; |
| sdaddr = 0; |
| dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); |
| } |
| } |
| |
| dev_kfree_skb(pkt); |
| |
| /* Return the window to backplane enumeration space for core access */ |
| if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) |
| brcmf_err("FAILED to set window back to 0x%x\n", |
| sdiodev->sbwad); |
| |
| sdio_release_host(sdiodev->func[1]); |
| |
| return bcmerror; |
| } |
| |
| int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) |
| { |
| char t_func = (char)fn; |
| brcmf_dbg(SDIO, "Enter\n"); |
| |
| /* issue abort cmd52 command through F0 */ |
| brcmf_sdiod_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, |
| SDIO_CCCR_ABORT, &t_func); |
| |
| brcmf_dbg(SDIO, "Exit\n"); |
| return 0; |
| } |
| |
| static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) |
| { |
| sdiodev->bus_if->state = BRCMF_BUS_DOWN; |
| |
| if (sdiodev->bus) { |
| brcmf_sdbrcm_disconnect(sdiodev->bus); |
| sdiodev->bus = NULL; |
| } |
| |
| /* Disable Function 2 */ |
| sdio_claim_host(sdiodev->func[2]); |
| sdio_disable_func(sdiodev->func[2]); |
| sdio_release_host(sdiodev->func[2]); |
| |
| /* Disable Function 1 */ |
| sdio_claim_host(sdiodev->func[1]); |
| sdio_disable_func(sdiodev->func[1]); |
| sdio_release_host(sdiodev->func[1]); |
| |
| sdiodev->sbwad = 0; |
| |
| return 0; |
| } |
| |
| static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) |
| { |
| struct sdio_func *func; |
| struct mmc_host *host; |
| uint max_blocks; |
| int ret = 0; |
| |
| sdiodev->num_funcs = 2; |
| |
| sdio_claim_host(sdiodev->func[1]); |
| |
| ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); |
| if (ret) { |
| brcmf_err("Failed to set F1 blocksize\n"); |
| sdio_release_host(sdiodev->func[1]); |
| goto out; |
| } |
| ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); |
| if (ret) { |
| brcmf_err("Failed to set F2 blocksize\n"); |
| sdio_release_host(sdiodev->func[1]); |
| goto out; |
| } |
| |
| /* increase F2 timeout */ |
| sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; |
| |
| /* Enable Function 1 */ |
| ret = sdio_enable_func(sdiodev->func[1]); |
| sdio_release_host(sdiodev->func[1]); |
| if (ret) { |
| brcmf_err("Failed to enable F1: err=%d\n", ret); |
| goto out; |
| } |
| |
| /* |
| * determine host related variables after brcmf_sdiod_probe() |
| * as func->cur_blksize is properly set and F2 init has been |
| * completed successfully. |
| */ |
| func = sdiodev->func[2]; |
| host = func->card->host; |
| sdiodev->sg_support = host->max_segs > 1; |
| max_blocks = min_t(uint, host->max_blk_count, 511u); |
| sdiodev->max_request_size = min_t(uint, host->max_req_size, |
| max_blocks * func->cur_blksize); |
| sdiodev->max_segment_count = min_t(uint, host->max_segs, |
| SG_MAX_SINGLE_ALLOC); |
| sdiodev->max_segment_size = host->max_seg_size; |
| |
| /* try to attach to the target device */ |
| sdiodev->bus = brcmf_sdbrcm_probe(sdiodev); |
| if (!sdiodev->bus) { |
| ret = -ENODEV; |
| goto out; |
| } |
| |
| out: |
| if (ret) |
| brcmf_sdiod_remove(sdiodev); |
| |
| return ret; |
| } |
| |
| /* devices we support, null terminated */ |
| static const struct sdio_device_id brcmf_sdmmc_ids[] = { |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)}, |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)}, |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)}, |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)}, |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)}, |
| {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, |
| SDIO_DEVICE_ID_BROADCOM_4335_4339)}, |
| { /* end: all zeroes */ }, |
| }; |
| MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); |
| |
| static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata; |
| |
| |
| static int brcmf_ops_sdio_probe(struct sdio_func *func, |
| const struct sdio_device_id *id) |
| { |
| int err; |
| struct brcmf_sdio_dev *sdiodev; |
| struct brcmf_bus *bus_if; |
| |
| brcmf_dbg(SDIO, "Enter\n"); |
| brcmf_dbg(SDIO, "Class=%x\n", func->class); |
| brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); |
| brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); |
| brcmf_dbg(SDIO, "Function#: %d\n", func->num); |
| |
| /* Consume func num 1 but dont do anything with it. */ |
| if (func->num == 1) |
| return 0; |
| |
| /* Ignore anything but func 2 */ |
| if (func->num != 2) |
| return -ENODEV; |
| |
| bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); |
| if (!bus_if) |
| return -ENOMEM; |
| sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); |
| if (!sdiodev) { |
| kfree(bus_if); |
| return -ENOMEM; |
| } |
| |
| sdiodev->func[0] = func->card->sdio_func[0]; |
| sdiodev->func[1] = func->card->sdio_func[0]; |
| sdiodev->func[2] = func; |
| |
| sdiodev->bus_if = bus_if; |
| bus_if->bus_priv.sdio = sdiodev; |
| dev_set_drvdata(&func->dev, bus_if); |
| dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); |
| sdiodev->dev = &sdiodev->func[1]->dev; |
| sdiodev->pdata = brcmfmac_sdio_pdata; |
| |
| atomic_set(&sdiodev->suspend, false); |
| init_waitqueue_head(&sdiodev->request_byte_wait); |
| init_waitqueue_head(&sdiodev->request_word_wait); |
| init_waitqueue_head(&sdiodev->request_buffer_wait); |
| |
| brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); |
| err = brcmf_sdiod_probe(sdiodev); |
| if (err) { |
| brcmf_err("F2 error, probe failed %d...\n", err); |
| goto fail; |
| } |
| |
| brcmf_dbg(SDIO, "F2 init completed...\n"); |
| return 0; |
| |
| fail: |
| dev_set_drvdata(&func->dev, NULL); |
| dev_set_drvdata(&sdiodev->func[1]->dev, NULL); |
| kfree(sdiodev); |
| kfree(bus_if); |
| return err; |
| } |
| |
| static void brcmf_ops_sdio_remove(struct sdio_func *func) |
| { |
| struct brcmf_bus *bus_if; |
| struct brcmf_sdio_dev *sdiodev; |
| |
| brcmf_dbg(SDIO, "Enter\n"); |
| brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); |
| brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); |
| brcmf_dbg(SDIO, "Function: %d\n", func->num); |
| |
| if (func->num != 1 && func->num != 2) |
| return; |
| |
| bus_if = dev_get_drvdata(&func->dev); |
| if (bus_if) { |
| sdiodev = bus_if->bus_priv.sdio; |
| brcmf_sdiod_remove(sdiodev); |
| |
| dev_set_drvdata(&sdiodev->func[1]->dev, NULL); |
| dev_set_drvdata(&sdiodev->func[2]->dev, NULL); |
| |
| kfree(bus_if); |
| kfree(sdiodev); |
| } |
| |
| brcmf_dbg(SDIO, "Exit\n"); |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int brcmf_ops_sdio_suspend(struct device *dev) |
| { |
| mmc_pm_flag_t sdio_flags; |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
| int ret = 0; |
| |
| brcmf_dbg(SDIO, "\n"); |
| |
| atomic_set(&sdiodev->suspend, true); |
| |
| sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]); |
| if (!(sdio_flags & MMC_PM_KEEP_POWER)) { |
| brcmf_err("Host can't keep power while suspended\n"); |
| return -EINVAL; |
| } |
| |
| ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER); |
| if (ret) { |
| brcmf_err("Failed to set pm_flags\n"); |
| return ret; |
| } |
| |
| brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); |
| |
| return ret; |
| } |
| |
| static int brcmf_ops_sdio_resume(struct device *dev) |
| { |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; |
| |
| brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); |
| atomic_set(&sdiodev->suspend, false); |
| return 0; |
| } |
| |
| static const struct dev_pm_ops brcmf_sdio_pm_ops = { |
| .suspend = brcmf_ops_sdio_suspend, |
| .resume = brcmf_ops_sdio_resume, |
| }; |
| #endif /* CONFIG_PM_SLEEP */ |
| |
| static struct sdio_driver brcmf_sdmmc_driver = { |
| .probe = brcmf_ops_sdio_probe, |
| .remove = brcmf_ops_sdio_remove, |
| .name = BRCMFMAC_SDIO_PDATA_NAME, |
| .id_table = brcmf_sdmmc_ids, |
| #ifdef CONFIG_PM_SLEEP |
| .drv = { |
| .pm = &brcmf_sdio_pm_ops, |
| }, |
| #endif /* CONFIG_PM_SLEEP */ |
| }; |
| |
| static int brcmf_sdio_pd_probe(struct platform_device *pdev) |
| { |
| brcmf_dbg(SDIO, "Enter\n"); |
| |
| brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev); |
| |
| if (brcmfmac_sdio_pdata->power_on) |
| brcmfmac_sdio_pdata->power_on(); |
| |
| return 0; |
| } |
| |
| static int brcmf_sdio_pd_remove(struct platform_device *pdev) |
| { |
| brcmf_dbg(SDIO, "Enter\n"); |
| |
| if (brcmfmac_sdio_pdata->power_off) |
| brcmfmac_sdio_pdata->power_off(); |
| |
| sdio_unregister_driver(&brcmf_sdmmc_driver); |
| |
| return 0; |
| } |
| |
| static struct platform_driver brcmf_sdio_pd = { |
| .remove = brcmf_sdio_pd_remove, |
| .driver = { |
| .name = BRCMFMAC_SDIO_PDATA_NAME, |
| .owner = THIS_MODULE, |
| } |
| }; |
| |
| void brcmf_sdio_register(void) |
| { |
| int ret; |
| |
| ret = sdio_register_driver(&brcmf_sdmmc_driver); |
| if (ret) |
| brcmf_err("sdio_register_driver failed: %d\n", ret); |
| } |
| |
| void brcmf_sdio_exit(void) |
| { |
| brcmf_dbg(SDIO, "Enter\n"); |
| |
| if (brcmfmac_sdio_pdata) |
| platform_driver_unregister(&brcmf_sdio_pd); |
| else |
| sdio_unregister_driver(&brcmf_sdmmc_driver); |
| } |
| |
| void __init brcmf_sdio_init(void) |
| { |
| int ret; |
| |
| brcmf_dbg(SDIO, "Enter\n"); |
| |
| ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); |
| if (ret == -ENODEV) |
| brcmf_dbg(SDIO, "No platform data available.\n"); |
| } |