litmus-rt.git - The LITMUS^RT kernel.

diff options

author	Andi Kleen <andi@basil.nowhere.org>	2006-11-21 04:22:09 -0500
committer	Andi Kleen <andi@basil.nowhere.org>	2006-11-21 04:22:09 -0500
commit	1b7f6a626f0ff511c3840678466cbfe1d62c0b29 (patch)
tree	415e8c838c0067bff384afb8a2c91e5f7c6d11d3 /include/linux/mmzone.h
parent	b3edc9cec07ade41aaf1804f7c9e876afa90c862 (diff)
parent	3f5a6ca31c334011fd929501a078424c0d3f71be (diff)

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Diffstat (limited to 'include/linux/mmzone.h')

-rw-r--r--

include/linux/mmzone.h

1 files changed, 1 insertions, 5 deletions

          * under - it drives the swappiness decision: whether to unmap mapped
          * pages.
          *
-         * temp_priority is used to remember the scanning priority at which
+         * Access to both this field is quite racy even on uniprocessor.  But
-         * this zone was successfully refilled to free_pages == pages_high.
-         *
-         * Access to both these fields is quite racy even on uniprocessor.  But
          * it is expected to average out OK.
          */
-        int temp_priority;
         int prev_priority;

/** * Marvell BT-over-SDIO driver: SDIO interface related functions. * * Copyright (C) 2009, Marvell International Ltd. * * This software file (the "File") is distributed by Marvell International * Ltd. under the terms of the GNU General Public License Version 2, June 1991 * (the "License"). You may use, redistribute and/or modify this File in * accordance with the terms and conditions of the License, a copy of which * is available by writing to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. * * * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE * ARE EXPRESSLY DISCLAIMED. The License provides additional details about * this warranty disclaimer. **/ #include <linux/slab.h> #include <linux/mmc/sdio_ids.h> #include <linux/mmc/sdio_func.h> #include <linux/module.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include "btmrvl_drv.h" #include "btmrvl_sdio.h" #define VERSION "1.0" /* The btmrvl_sdio_remove() callback function is called * when user removes this module from kernel space or ejects * the card from the slot. The driver handles these 2 cases * differently. * If the user is removing the module, a MODULE_SHUTDOWN_REQ * command is sent to firmware and interrupt will be disabled. * If the card is removed, there is no need to send command * or disable interrupt. * * The variable 'user_rmmod' is used to distinguish these two * scenarios. This flag is initialized as FALSE in case the card * is removed, and will be set to TRUE for module removal when * module_exit function is called. */ static u8 user_rmmod; static u8 sdio_ireg; static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = { .cfg = 0x03, .host_int_mask = 0x04, .host_intstatus = 0x05, .card_status = 0x20, .sq_read_base_addr_a0 = 0x10, .sq_read_base_addr_a1 = 0x11, .card_fw_status0 = 0x40, .card_fw_status1 = 0x41, .card_rx_len = 0x42, .card_rx_unit = 0x43, .io_port_0 = 0x00, .io_port_1 = 0x01, .io_port_2 = 0x02, }; static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = { .cfg = 0x00, .host_int_mask = 0x02, .host_intstatus = 0x03, .card_status = 0x30, .sq_read_base_addr_a0 = 0x40, .sq_read_base_addr_a1 = 0x41, .card_revision = 0x5c, .card_fw_status0 = 0x60, .card_fw_status1 = 0x61, .card_rx_len = 0x62, .card_rx_unit = 0x63, .io_port_0 = 0x78, .io_port_1 = 0x79, .io_port_2 = 0x7a, }; static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = { .cfg = 0x00, .host_int_mask = 0x02, .host_intstatus = 0x03, .card_status = 0x50, .sq_read_base_addr_a0 = 0x60, .sq_read_base_addr_a1 = 0x61, .card_revision = 0xbc, .card_fw_status0 = 0xc0, .card_fw_status1 = 0xc1, .card_rx_len = 0xc2, .card_rx_unit = 0xc3, .io_port_0 = 0xd8, .io_port_1 = 0xd9, .io_port_2 = 0xda, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { .helper = "mrvl/sd8688_helper.bin", .firmware = "mrvl/sd8688.bin", .cal_data = NULL, .reg = &btmrvl_reg_8688, .sd_blksz_fw_dl = 64, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { .helper = NULL, .firmware = "mrvl/sd8787_uapsta.bin", .cal_data = NULL, .reg = &btmrvl_reg_87xx, .sd_blksz_fw_dl = 256, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { .helper = NULL, .firmware = "mrvl/sd8797_uapsta.bin", .cal_data = "mrvl/sd8797_caldata.conf", .reg = &btmrvl_reg_87xx, .sd_blksz_fw_dl = 256, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { .helper = NULL, .firmware = "mrvl/sd8897_uapsta.bin", .cal_data = NULL, .reg = &btmrvl_reg_88xx, .sd_blksz_fw_dl = 256, }; static const struct sdio_device_id btmrvl_sdio_ids[] = { /* Marvell SD8688 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, /* Marvell SD8787 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, /* Marvell SD8787 Bluetooth AMP device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B), .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, /* Marvell SD8797 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, /* Marvell SD8897 Bluetooth device */ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E), .driver_data = (unsigned long) &btmrvl_sdio_sd8897 }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) { u8 reg; int ret; reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); if (!ret) card->rx_unit = reg; return ret; } static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) { u8 fws0, fws1; int ret; *dat = 0; fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); if (ret) return -EIO; fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); if (ret) return -EIO; *dat = (((u16) fws1) << 8) | fws0; return 0; } static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) { u8 reg; int ret; reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); if (!ret) *dat = (u16) reg << card->rx_unit; return ret; } static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, u8 mask) { int ret; sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); if (ret) { BT_ERR("Unable to enable the host interrupt!"); ret = -EIO; } return ret; } static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, u8 mask) { u8 host_int_mask; int ret; host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); if (ret) return -EIO; host_int_mask &= ~mask; sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); if (ret < 0) { BT_ERR("Unable to disable the host interrupt!"); return -EIO; } return 0; } static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) { unsigned int tries; u8 status; int ret; for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { status = sdio_readb(card->func, card->reg->card_status, &ret); if (ret) goto failed; if ((status & bits) == bits) return ret; udelay(1); } ret = -ETIMEDOUT; failed: BT_ERR("FAILED! ret=%d", ret); return ret; } static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, int pollnum) { u16 firmwarestat; int tries, ret; /* Wait for firmware to become ready */ for (tries = 0; tries < pollnum; tries++) { sdio_claim_host(card->func); ret = btmrvl_sdio_read_fw_status(card, &firmwarestat); sdio_release_host(card->func); if (ret < 0) continue; if (firmwarestat == FIRMWARE_READY) return 0; msleep(10); } return -ETIMEDOUT; } static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) { const struct firmware *fw_helper = NULL; const u8 *helper = NULL; int ret; void *tmphlprbuf = NULL; int tmphlprbufsz, hlprblknow, helperlen; u8 *helperbuf; u32 tx_len; ret = request_firmware(&fw_helper, card->helper, &card->func->dev); if ((ret < 0) || !fw_helper) { BT_ERR("request_firmware(helper) failed, error code = %d", ret); ret = -ENOENT; goto done; } helper = fw_helper->data; helperlen = fw_helper->size; BT_DBG("Downloading helper image (%d bytes), block size %d bytes", helperlen, SDIO_BLOCK_SIZE); tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); if (!tmphlprbuf) { BT_ERR("Unable to allocate buffer for helper." " Terminating download"); ret = -ENOMEM; goto done; } helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); /* Perform helper data transfer */ tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) - SDIO_HEADER_LEN; hlprblknow = 0; do { ret = btmrvl_sdio_poll_card_status(card, CARD_IO_READY | DN_LD_CARD_RDY); if (ret < 0) { BT_ERR("Helper download poll status timeout @ %d", hlprblknow); goto done; } /* Check if there is more data? */ if (hlprblknow >= helperlen) break; if (helperlen - hlprblknow < tx_len) tx_len = helperlen - hlprblknow; /* Little-endian */ helperbuf[0] = ((tx_len & 0x000000ff) >> 0); helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); helperbuf[3] = ((tx_len & 0xff000000) >> 24); memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], tx_len); /* Now send the data */ ret = sdio_writesb(card->func, card->ioport, helperbuf, FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); if (ret < 0) { BT_ERR("IO error during helper download @ %d", hlprblknow); goto done; } hlprblknow += tx_len; } while (true); BT_DBG("Transferring helper image EOF block"); memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); ret = sdio_writesb(card->func, card->ioport, helperbuf, SDIO_BLOCK_SIZE); if (ret < 0) { BT_ERR("IO error in writing helper image EOF block"); goto done; } ret = 0; done: kfree(tmphlprbuf); release_firmware(fw_helper); return ret; } static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) { const struct firmware *fw_firmware = NULL; const u8 *firmware = NULL; int firmwarelen, tmpfwbufsz, ret; unsigned int tries, offset; u8 base0, base1; void *tmpfwbuf = NULL; u8 *fwbuf; u16 len, blksz_dl = card->sd_blksz_fw_dl; int txlen = 0, tx_blocks = 0, count = 0; ret = request_firmware(&fw_firmware, card->firmware, &card->func->dev); if ((ret < 0) || !fw_firmware) { BT_ERR("request_firmware(firmware) failed, error code = %d", ret); ret = -ENOENT; goto done; } firmware = fw_firmware->data; firmwarelen = fw_firmware->size; BT_DBG("Downloading FW image (%d bytes)", firmwarelen); tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); if (!tmpfwbuf) { BT_ERR("Unable to allocate buffer for firmware." " Terminating download"); ret = -ENOMEM; goto done; } /* Ensure aligned firmware buffer */ fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); /* Perform firmware data transfer */ offset = 0; do { ret = btmrvl_sdio_poll_card_status(card, CARD_IO_READY | DN_LD_CARD_RDY); if (ret < 0) { BT_ERR("FW download with helper poll status" " timeout @ %d", offset); goto done; } /* Check if there is more data ? */ if (offset >= firmwarelen) break; for (tries = 0; tries < MAX_POLL_TRIES; tries++) { base0 = sdio_readb(card->func, card->reg->sq_read_base_addr_a0, &ret); if (ret) { BT_ERR("BASE0 register read failed:" " base0 = 0x%04X(%d)." " Terminating download", base0, base0); ret = -EIO; goto done; } base1 = sdio_readb(card->func, card->reg->sq_read_base_addr_a1, &ret); if (ret) { BT_ERR("BASE1 register read failed:" " base1 = 0x%04X(%d)." " Terminating download", base1, base1); ret = -EIO; goto done; } len = (((u16) base1) << 8) | base0; if (len) break; udelay(10); } if (!len) break; else if (len > BTM_UPLD_SIZE) { BT_ERR("FW download failure @%d, invalid length %d", offset, len); ret = -EINVAL; goto done; } txlen = len; if (len & BIT(0)) { count++; if (count > MAX_WRITE_IOMEM_RETRY) { BT_ERR("FW download failure @%d, " "over max retry count", offset); ret = -EIO; goto done; } BT_ERR("FW CRC error indicated by the helper: " "len = 0x%04X, txlen = %d", len, txlen); len &= ~BIT(0); /* Set txlen to 0 so as to resend from same offset */ txlen = 0; } else { count = 0; /* Last block ? */ if (firmwarelen - offset < txlen) txlen = firmwarelen - offset; tx_blocks = DIV_ROUND_UP(txlen, blksz_dl); memcpy(fwbuf, &firmware[offset], txlen); } ret = sdio_writesb(card->func, card->ioport, fwbuf, tx_blocks * blksz_dl); if (ret < 0) { BT_ERR("FW download, writesb(%d) failed @%d", count, offset); sdio_writeb(card->func, HOST_CMD53_FIN, card->reg->cfg, &ret); if (ret) BT_ERR("writeb failed (CFG)"); } offset += txlen; } while (true); BT_DBG("FW download over, size %d bytes", offset); ret = 0; done: kfree(tmpfwbuf); release_firmware(fw_firmware); return ret; } static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) { u16 buf_len = 0; int ret, num_blocks, blksz; struct sk_buff *skb = NULL; u32 type; u8 *payload = NULL; struct hci_dev *hdev = priv->btmrvl_dev.hcidev; struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; if (!card || !card->func) { BT_ERR("card or function is NULL!"); ret = -EINVAL; goto exit; } /* Read the length of data to be transferred */ ret = btmrvl_sdio_read_rx_len(card, &buf_len); if (ret < 0) { BT_ERR("read rx_len failed"); ret = -EIO; goto exit; } blksz = SDIO_BLOCK_SIZE; num_blocks = DIV_ROUND_UP(buf_len, blksz); if (buf_len <= SDIO_HEADER_LEN || (num_blocks * blksz) > ALLOC_BUF_SIZE) { BT_ERR("invalid packet length: %d", buf_len); ret = -EINVAL; goto exit; } /* Allocate buffer */ skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC); if (skb == NULL) { BT_ERR("No free skb"); ret = -ENOMEM; goto exit; } if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { skb_put(skb, (unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)); skb_pull(skb, (unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)); } payload = skb->data; ret = sdio_readsb(card->func, payload, card->ioport, num_blocks * blksz); if (ret < 0) { BT_ERR("readsb failed: %d", ret); ret = -EIO; goto exit; } /* This is SDIO specific header length: byte[2][1][0], type: byte[3] * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) */ buf_len = payload[0]; buf_len |= payload[1] << 8; buf_len |= payload[2] << 16; if (buf_len > blksz * num_blocks) { BT_ERR("Skip incorrect packet: hdrlen %d buffer %d", buf_len, blksz * num_blocks); ret = -EIO; goto exit; } type = payload[3]; switch (type) { case HCI_ACLDATA_PKT: case HCI_SCODATA_PKT: case HCI_EVENT_PKT: bt_cb(skb)->pkt_type = type; skb_put(skb, buf_len); skb_pull(skb, SDIO_HEADER_LEN); if (type == HCI_EVENT_PKT) { if (btmrvl_check_evtpkt(priv, skb)) hci_recv_frame(hdev, skb); } else { hci_recv_frame(hdev, skb); } hdev->stat.byte_rx += buf_len; break; case MRVL_VENDOR_PKT: bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; skb_put(skb, buf_len); skb_pull(skb, SDIO_HEADER_LEN); if (btmrvl_process_event(priv, skb)) hci_recv_frame(hdev, skb); hdev->stat.byte_rx += buf_len; break; default: BT_ERR("Unknown packet type:%d", type); BT_ERR("hex: %*ph", blksz * num_blocks, payload); kfree_skb(skb); skb = NULL; break; } exit: if (ret) { hdev->stat.err_rx++; kfree_skb(skb); } return ret; } static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) { ulong flags; u8 ireg; struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; spin_lock_irqsave(&priv->driver_lock, flags); ireg = sdio_ireg; sdio_ireg = 0; spin_unlock_irqrestore(&priv->driver_lock, flags); sdio_claim_host(card->func); if (ireg & DN_LD_HOST_INT_STATUS) { if (priv->btmrvl_dev.tx_dnld_rdy) BT_DBG("tx_done already received: " " int_status=0x%x", ireg); else priv->btmrvl_dev.tx_dnld_rdy = true; } if (ireg & UP_LD_HOST_INT_STATUS) btmrvl_sdio_card_to_host(priv); sdio_release_host(card->func); return 0; } static void btmrvl_sdio_interrupt(struct sdio_func *func) { struct btmrvl_private *priv; struct btmrvl_sdio_card *card; ulong flags; u8 ireg = 0; int ret; card = sdio_get_drvdata(func); if (!card || !card->priv) { BT_ERR("sbi_interrupt(%p) card or priv is " "NULL, card=%p\n", func, card); return; } priv = card->priv; ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); if (ret) { BT_ERR("sdio_readb: read int status register failed"); return; } if (ireg != 0) { /* * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS * Clear the interrupt status register and re-enable the * interrupt. */ BT_DBG("ireg = 0x%x", ireg); sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | UP_LD_HOST_INT_STATUS), card->reg->host_intstatus, &ret); if (ret) { BT_ERR("sdio_writeb: clear int status register failed"); return; } } spin_lock_irqsave(&priv->driver_lock, flags); sdio_ireg |= ireg; spin_unlock_irqrestore(&priv->driver_lock, flags); btmrvl_interrupt(priv); } static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) { struct sdio_func *func; u8 reg; int ret = 0; if (!card || !card->func) { BT_ERR("Error: card or function is NULL!"); ret = -EINVAL; goto failed; } func = card->func; sdio_claim_host(func); ret = sdio_enable_func(func); if (ret) { BT_ERR("sdio_enable_func() failed: ret=%d", ret); ret = -EIO; goto release_host; } ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); if (ret) { BT_ERR("sdio_claim_irq failed: ret=%d", ret); ret = -EIO; goto disable_func; } ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); if (ret) { BT_ERR("cannot set SDIO block size"); ret = -EIO; goto release_irq; } reg = sdio_readb(func, card->reg->io_port_0, &ret); if (ret < 0) { ret = -EIO; goto release_irq; } card->ioport = reg; reg = sdio_readb(func, card->reg->io_port_1, &ret); if (ret < 0) { ret = -EIO; goto release_irq; } card->ioport |= (reg << 8); reg = sdio_readb(func, card->reg->io_port_2, &ret); if (ret < 0) { ret = -EIO; goto release_irq; } card->ioport |= (reg << 16); BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); sdio_set_drvdata(func, card); sdio_release_host(func); return 0; release_irq: sdio_release_irq(func); disable_func: sdio_disable_func(func); release_host: sdio_release_host(func); failed: return ret; } static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) { if (card && card->func) { sdio_claim_host(card->func); sdio_release_irq(card->func); sdio_disable_func(card->func); sdio_release_host(card->func); sdio_set_drvdata(card->func, NULL); } return 0; } static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) { int ret; if (!card || !card->func) return -EINVAL; sdio_claim_host(card->func); ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); btmrvl_sdio_get_rx_unit(card); sdio_release_host(card->func); return ret; } static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) { int ret; if (!card || !card->func) return -EINVAL; sdio_claim_host(card->func); ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); sdio_release_host(card->func); return ret; } static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, u8 *payload, u16 nb) { struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; int ret = 0; int buf_block_len; int blksz; int i = 0; u8 *buf = NULL; void *tmpbuf = NULL; int tmpbufsz; if (!card || !card->func) { BT_ERR("card or function is NULL!"); return -EINVAL; } buf = payload; if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); if (!tmpbuf) return -ENOMEM; buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); memcpy(buf, payload, nb); } blksz = SDIO_BLOCK_SIZE; buf_block_len = DIV_ROUND_UP(nb, blksz); sdio_claim_host(card->func); do { /* Transfer data to card */ ret = sdio_writesb(card->func, card->ioport, buf, buf_block_len * blksz); if (ret < 0) { i++; BT_ERR("i=%d writesb failed: %d", i, ret); BT_ERR("hex: %*ph", nb, payload); ret = -EIO; if (i > MAX_WRITE_IOMEM_RETRY) goto exit; } } while (ret); priv->btmrvl_dev.tx_dnld_rdy = false; exit: sdio_release_host(card->func); kfree(tmpbuf); return ret; } static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) { int ret; u8 fws0; int pollnum = MAX_POLL_TRIES; if (!card || !card->func) { BT_ERR("card or function is NULL!"); return -EINVAL; } if (!btmrvl_sdio_verify_fw_download(card, 1)) { BT_DBG("Firmware already downloaded!"); return 0; } sdio_claim_host(card->func); /* Check if other function driver is downloading the firmware */ fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); if (ret) { BT_ERR("Failed to read FW downloading status!"); ret = -EIO; goto done; } if (fws0) { BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); /* Give other function more time to download the firmware */ pollnum *= 10; } else { if (card->helper) { ret = btmrvl_sdio_download_helper(card); if (ret) { BT_ERR("Failed to download helper!"); ret = -EIO; goto done; } } if (btmrvl_sdio_download_fw_w_helper(card)) { BT_ERR("Failed to download firmware!"); ret = -EIO; goto done; } } sdio_release_host(card->func); /* * winner or not, with this test the FW synchronizes when the * module can continue its initialization */ if (btmrvl_sdio_verify_fw_download(card, pollnum)) { BT_ERR("FW failed to be active in time!"); return -ETIMEDOUT; } return 0; done: sdio_release_host(card->func); return ret; } static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) { struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; int ret = 0; if (!card || !card->func) { BT_ERR("card or function is NULL!"); return -EINVAL; } sdio_claim_host(card->func); sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); sdio_release_host(card->func); BT_DBG("wake up firmware"); return ret; } static int btmrvl_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) { int ret = 0; struct btmrvl_private *priv = NULL; struct btmrvl_sdio_card *card = NULL; BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", id->vendor, id->device, id->class, func->num); card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); if (!card) return -ENOMEM; card->func = func; if (id->driver_data) { struct btmrvl_sdio_device *data = (void *) id->driver_data; card->helper = data->helper; card->firmware = data->firmware; card->cal_data = data->cal_data; card->reg = data->reg; card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; } if (btmrvl_sdio_register_dev(card) < 0) { BT_ERR("Failed to register BT device!"); return -ENODEV; } /* Disable the interrupts on the card */ btmrvl_sdio_disable_host_int(card); if (btmrvl_sdio_download_fw(card)) { BT_ERR("Downloading firmware failed!"); ret = -ENODEV; goto unreg_dev; } btmrvl_sdio_enable_host_int(card); priv = btmrvl_add_card(card); if (!priv) { BT_ERR("Initializing card failed!"); ret = -ENODEV; goto disable_host_int; } card->priv = priv; priv->btmrvl_dev.dev = &card->func->dev; priv->btmrvl_dev.cal_data = card->cal_data; /* Initialize the interface specific function pointers */ priv->hw_host_to_card = btmrvl_sdio_host_to_card; priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; priv->hw_process_int_status = btmrvl_sdio_process_int_status; if (btmrvl_register_hdev(priv)) { BT_ERR("Register hdev failed!"); ret = -ENODEV; goto disable_host_int; } return 0; disable_host_int: btmrvl_sdio_disable_host_int(card); unreg_dev: btmrvl_sdio_unregister_dev(card); return ret; } static void btmrvl_sdio_remove(struct sdio_func *func) { struct btmrvl_sdio_card *card; if (func) { card = sdio_get_drvdata(func); if (card) { /* Send SHUTDOWN command & disable interrupt * if user removes the module. */ if (user_rmmod) { btmrvl_send_module_cfg_cmd(card->priv, MODULE_SHUTDOWN_REQ); btmrvl_sdio_disable_host_int(card); } BT_DBG("unregester dev"); btmrvl_sdio_unregister_dev(card); btmrvl_remove_card(card->priv); } } } static int btmrvl_sdio_suspend(struct device *dev) { struct sdio_func *func = dev_to_sdio_func(dev); struct btmrvl_sdio_card *card; struct btmrvl_private *priv; mmc_pm_flag_t pm_flags; struct hci_dev *hcidev; if (func) { pm_flags = sdio_get_host_pm_caps(func); BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func), pm_flags); if (!(pm_flags & MMC_PM_KEEP_POWER)) { BT_ERR("%s: cannot remain alive while suspended", sdio_func_id(func)); return -ENOSYS; } card = sdio_get_drvdata(func); if (!card || !card->priv) { BT_ERR("card or priv structure is not valid"); return 0; } } else { BT_ERR("sdio_func is not specified"); return 0; } priv = card->priv; if (priv->adapter->hs_state != HS_ACTIVATED) { if (btmrvl_enable_hs(priv)) { BT_ERR("HS not actived, suspend failed!"); return -EBUSY; } } hcidev = priv->btmrvl_dev.hcidev; BT_DBG("%s: SDIO suspend", hcidev->name); hci_suspend_dev(hcidev); skb_queue_purge(&priv->adapter->tx_queue); priv->adapter->is_suspended = true; /* We will keep the power when hs enabled successfully */ if (priv->adapter->hs_state == HS_ACTIVATED) { BT_DBG("suspend with MMC_PM_KEEP_POWER"); return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); } else { BT_DBG("suspend without MMC_PM_KEEP_POWER"); return 0; } } static int btmrvl_sdio_resume(struct device *dev) { struct sdio_func *func = dev_to_sdio_func(dev); struct btmrvl_sdio_card *card; struct btmrvl_private *priv; mmc_pm_flag_t pm_flags; struct hci_dev *hcidev; if (func) { pm_flags = sdio_get_host_pm_caps(func); BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func), pm_flags); card = sdio_get_drvdata(func); if (!card || !card->priv) { BT_ERR("card or priv structure is not valid"); return 0; } } else { BT_ERR("sdio_func is not specified"); return 0; } priv = card->priv; if (!priv->adapter->is_suspended) { BT_DBG("device already resumed"); return 0; } priv->adapter->is_suspended = false; hcidev = priv->btmrvl_dev.hcidev; BT_DBG("%s: SDIO resume", hcidev->name); hci_resume_dev(hcidev); priv->hw_wakeup_firmware(priv); priv->adapter->hs_state = HS_DEACTIVATED; BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);


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