#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 "dhd_bus.h"
#include "dhd_dbg.h"
#include "sdio_host.h"
+#include "sdio_chip.h"
#define SDIOH_API_ACCESS_RETRY_LIMIT 2
else
brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
}
+
+#define SDIO_VENDOR_ID_BROADCOM 0x02d0
+
+#define DMA_ALIGN_MASK 0x03
+
+#define SDIO_FUNC1_BLOCKSIZE 64
+#define SDIO_FUNC2_BLOCKSIZE 512
+
+/* 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;
+
+
+bool
+brcmf_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;
+}
+
+void
+brcmf_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
+}
+
+static inline int brcmf_sdioh_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_IOEx) {
+ sdfunc = sdiodev->func[2];
+ if (sdfunc) {
+ if (*byte & SDIO_FUNC_ENABLE_2) {
+ /* Enable Function 2 */
+ err_ret = sdio_enable_func(sdfunc);
+ if (err_ret)
+ brcmf_err("enable F2 failed:%d\n",
+ err_ret);
+ } else {
+ /* Disable Function 2 */
+ err_ret = sdio_disable_func(sdfunc);
+ if (err_ret)
+ brcmf_err("Disable F2 failed:%d\n",
+ err_ret);
+ }
+ } else {
+ err_ret = -ENOENT;
+ }
+ } else 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;
+}
+
+int brcmf_sdioh_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_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
+ if (brcmf_pm_resume_error(sdiodev))
+ return -EIO;
+
+ if (rw && func == 0) {
+ /* handle F0 separately */
+ err_ret = brcmf_sdioh_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;
+}
+
+int brcmf_sdioh_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_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
+ if (brcmf_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_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
+{
+ /* read 24 bits and return valid 17 bit addr */
+ int i, ret;
+ u32 scratch, regdata;
+ __le32 scratch_le;
+ u8 *ptr = (u8 *)&scratch_le;
+
+ for (i = 0; i < 3; i++) {
+ regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
+ if (ret != 0)
+ brcmf_err("Can't read!\n");
+
+ *ptr++ = (u8) regdata;
+ regaddr++;
+ }
+
+ /* Only the lower 17-bits are valid */
+ scratch = le32_to_cpu(scratch_le);
+ scratch &= 0x0001FFFF;
+ return scratch;
+}
+
+static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
+{
+ int err_ret;
+ u32 fbraddr;
+ u8 func;
+
+ brcmf_dbg(SDIO, "\n");
+
+ /* Get the Card's common CIS address */
+ sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
+ SDIO_CCCR_CIS);
+ brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
+ sdiodev->func_cis_ptr[0]);
+
+ /* Get the Card's function CIS (for each function) */
+ for (fbraddr = SDIO_FBR_BASE(1), func = 1;
+ func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
+ sdiodev->func_cis_ptr[func] =
+ brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
+ brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
+ func, sdiodev->func_cis_ptr[func]);
+ }
+
+ /* Enable Function 1 */
+ err_ret = sdio_enable_func(sdiodev->func[1]);
+ if (err_ret)
+ brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
+
+ return false;
+}
+
+/*
+ * Public entry points & extern's
+ */
+int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
+{
+ int err_ret = 0;
+ struct mmc_host *host;
+ struct sdio_func *func;
+ uint max_blocks;
+
+ brcmf_dbg(SDIO, "\n");
+
+ sdiodev->num_funcs = 2;
+
+ sdio_claim_host(sdiodev->func[1]);
+
+ err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
+ if (err_ret) {
+ brcmf_err("Failed to set F1 blocksize\n");
+ goto out;
+ }
+
+ err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
+ if (err_ret) {
+ brcmf_err("Failed to set F2 blocksize\n");
+ goto out;
+ }
+
+ brcmf_sdioh_enablefuncs(sdiodev);
+
+ /*
+ * determine host related variables after brcmf_sdio_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;
+out:
+ sdio_release_host(sdiodev->func[1]);
+ brcmf_dbg(SDIO, "Done\n");
+ return err_ret;
+}
+
+void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
+{
+ brcmf_dbg(SDIO, "\n");
+
+ /* 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]);
+
+}
+
+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_sdio_probe...\n");
+ err = brcmf_sdio_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_sdio_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_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_sdio_wdtmr_enable(sdiodev, false);
+
+ return ret;
+}
+
+static int brcmf_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_sdio_wdtmr_enable(sdiodev, true);
+ atomic_set(&sdiodev->suspend, false);
+ return 0;
+}
+
+static const struct dev_pm_ops brcmf_sdio_pm_ops = {
+ .suspend = brcmf_sdio_suspend,
+ .resume = brcmf_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");
+}
projects / linux-drm-fsl-dcu.git / blobdiff