Merge branch 'power-supply-scope' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

1 files changed, 372 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
new file mode 100644
index 000000000000..89ff94da556a
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -0,0 +1,372 @@
+/*
+ * 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/export.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/sched.h>
+#include <linux/completion.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/card.h>
+
+#include <defs.h>
+#include <brcm_hw_ids.h>
+#include <brcmu_utils.h>
+#include <brcmu_wifi.h>
+#include <soc.h>
+#include "dhd.h"
+#include "dhd_bus.h"
+#include "dhd_dbg.h"
+#include "sdio_host.h"
+
+#define SDIOH_API_ACCESS_RETRY_LIMIT	2
+
+static void brcmf_sdioh_irqhandler(struct sdio_func *func)
+{
+	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
+
+	brcmf_dbg(TRACE, "***IRQHandler\n");
+
+	sdio_release_host(func);
+
+	brcmf_sdbrcm_isr(sdiodev->bus);
+
+	sdio_claim_host(func);
+}
+
+int brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev)
+{
+	brcmf_dbg(TRACE, "Entering\n");
+
+	sdio_claim_host(sdiodev->func[1]);
+	sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler);
+	sdio_release_host(sdiodev->func[1]);
+
+	return 0;
+}
+
+int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev)
+{
+	brcmf_dbg(TRACE, "Entering\n");
+
+	sdio_claim_host(sdiodev->func[1]);
+	sdio_release_irq(sdiodev->func[1]);
+	sdio_release_host(sdiodev->func[1]);
+
+	return 0;
+}
+
+u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
+			 int *err)
+{
+	int status;
+	s32 retry = 0;
+	u8 data = 0;
+
+	do {
+		if (retry)	/* wait for 1 ms till bus get settled down */
+			udelay(1000);
+		status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
+						  addr, (u8 *) &data);
+	} while (status != 0
+		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
+	if (err)
+		*err = status;
+
+	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
+		  fnc_num, addr, data);
+
+	return data;
+}
+
+void
+brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
+		       u8 data, int *err)
+{
+	int status;
+	s32 retry = 0;
+
+	do {
+		if (retry)	/* wait for 1 ms till bus get settled down */
+			udelay(1000);
+		status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
+						  addr, (u8 *) &data);
+	} while (status != 0
+		 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
+	if (err)
+		*err = status;
+
+	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
+		  fnc_num, addr, data);
+}
+
+int
+brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
+{
+	int err = 0;
+	brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
+			 (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
+	if (!err)
+		brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
+				       SBSDIO_FUNC1_SBADDRMID,
+				       (address >> 16) & SBSDIO_SBADDRMID_MASK,
+				       &err);
+	if (!err)
+		brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
+				       SBSDIO_FUNC1_SBADDRHIGH,
+				       (address >> 24) & SBSDIO_SBADDRHIGH_MASK,
+				       &err);
+
+	return err;
+}
+
+u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size)
+{
+	int status;
+	u32 word = 0;
+	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
+
+	brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
+
+	if (bar0 != sdiodev->sbwad) {
+		if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
+			return 0xFFFFFFFF;
+
+		sdiodev->sbwad = bar0;
+	}
+
+	addr &= SBSDIO_SB_OFT_ADDR_MASK;
+	if (size == 4)
+		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+
+	status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1,
+					  addr, &word, size);
+
+	sdiodev->regfail = (status != 0);
+
+	brcmf_dbg(INFO, "u32data = 0x%x\n", word);
+
+	/* if ok, return appropriately masked word */
+	if (status == 0) {
+		switch (size) {
+		case sizeof(u8):
+			return word & 0xff;
+		case sizeof(u16):
+			return word & 0xffff;
+		case sizeof(u32):
+			return word;
+		default:
+			sdiodev->regfail = true;
+
+		}
+	}
+
+	/* otherwise, bad sdio access or invalid size */
+	brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size);
+	return 0xFFFFFFFF;
+}
+
+u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
+			   u32 data)
+{
+	int status;
+	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
+	int err = 0;
+
+	brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
+		  addr, size * 8, data);
+
+	if (bar0 != sdiodev->sbwad) {
+		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
+		if (err)
+			return err;
+
+		sdiodev->sbwad = bar0;
+	}
+
+	addr &= SBSDIO_SB_OFT_ADDR_MASK;
+	if (size == 4)
+		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+	status =
+	    brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1,
+				     addr, &data, size);
+	sdiodev->regfail = (status != 0);
+
+	if (status == 0)
+		return 0;
+
+	brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n",
+		  data, addr, size);
+	return 0xFFFFFFFF;
+}
+
+bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
+{
+	return sdiodev->regfail;
+}
+
+int
+brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
+		      uint flags,
+		      u8 *buf, uint nbytes, struct sk_buff *pkt)
+{
+	int status;
+	uint incr_fix;
+	uint width;
+	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
+	int err = 0;
+
+	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes);
+
+	/* Async not implemented yet */
+	if (flags & SDIO_REQ_ASYNC)
+		return -ENOTSUPP;
+
+	if (bar0 != sdiodev->sbwad) {
+		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
+		if (err)
+			return err;
+
+		sdiodev->sbwad = bar0;
+	}
+
+	addr &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
+	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
+	if (width == 4)
+		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+
+	status = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
+					    fn, addr, width, nbytes, buf, pkt);
+
+	return status;
+}
+
+int
+brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
+		      uint flags, u8 *buf, uint nbytes, struct sk_buff *pkt)
+{
+	uint incr_fix;
+	uint width;
+	uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
+	int err = 0;
+
+	brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes);
+
+	/* Async not implemented yet */
+	if (flags & SDIO_REQ_ASYNC)
+		return -ENOTSUPP;
+
+	if (bar0 != sdiodev->sbwad) {
+		err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
+		if (err)
+			return err;
+
+		sdiodev->sbwad = bar0;
+	}
+
+	addr &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
+	width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
+	if (width == 4)
+		addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+
+	return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
+					  addr, width, nbytes, buf, pkt);
+}
+
+int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
+			u8 *buf, uint nbytes)
+{
+	addr &= SBSDIO_SB_OFT_ADDR_MASK;
+	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+
+	return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC,
+		(rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
+		addr, 4, nbytes, buf, NULL);
+}
+
+int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
+{
+	char t_func = (char)fn;
+	brcmf_dbg(TRACE, "Enter\n");
+
+	/* issue abort cmd52 command through F0 */
+	brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
+				 SDIO_CCCR_ABORT, &t_func);
+
+	brcmf_dbg(TRACE, "Exit\n");
+	return 0;
+}
+
+int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
+{
+	u32 regs = 0;
+	int ret = 0;
+
+	ret = brcmf_sdioh_attach(sdiodev);
+	if (ret)
+		goto out;
+
+	regs = SI_ENUM_BASE;
+
+	/* Report the BAR, to fix if needed */
+	sdiodev->sbwad = SI_ENUM_BASE;
+
+	/* try to attach to the target device */
+	sdiodev->bus = brcmf_sdbrcm_probe(0, 0, 0, 0, regs, sdiodev);
+	if (!sdiodev->bus) {
+		brcmf_dbg(ERROR, "device attach failed\n");
+		ret = -ENODEV;
+		goto out;
+	}
+
+out:
+	if (ret)
+		brcmf_sdio_remove(sdiodev);
+
+	return ret;
+}
+EXPORT_SYMBOL(brcmf_sdio_probe);
+
+int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
+{
+	if (sdiodev->bus) {
+		brcmf_sdbrcm_disconnect(sdiodev->bus);
+		sdiodev->bus = NULL;
+	}
+
+	brcmf_sdioh_detach(sdiodev);
+
+	sdiodev->sbwad = 0;
+
+	return 0;
+}
+EXPORT_SYMBOL(brcmf_sdio_remove);
+
+void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
+{
+	if (enable)
+		brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
+	else
+		brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
+}