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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-03 14:04:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-03 14:04:18 -0700
commit5bb053bef82523a8fd78d650bca81c9f114fa276 (patch)
tree58c2fe47f60bb69230bb05d57a6c9e3f47f7b1fe /drivers/bluetooth/btuart_cs.c
parentMerge tag 'docs-4.17' of git://git.lwn.net/linux (diff)
parentMerge branch 'net-mvneta-improve-suspend-resume' (diff)
downloadlinux-dev-5bb053bef82523a8fd78d650bca81c9f114fa276.tar.xz
linux-dev-5bb053bef82523a8fd78d650bca81c9f114fa276.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: 1) Support offloading wireless authentication to userspace via NL80211_CMD_EXTERNAL_AUTH, from Srinivas Dasari. 2) A lot of work on network namespace setup/teardown from Kirill Tkhai. Setup and cleanup of namespaces now all run asynchronously and thus performance is significantly increased. 3) Add rx/tx timestamping support to mv88e6xxx driver, from Brandon Streiff. 4) Support zerocopy on RDS sockets, from Sowmini Varadhan. 5) Use denser instruction encoding in x86 eBPF JIT, from Daniel Borkmann. 6) Support hw offload of vlan filtering in mvpp2 dreiver, from Maxime Chevallier. 7) Support grafting of child qdiscs in mlxsw driver, from Nogah Frankel. 8) Add packet forwarding tests to selftests, from Ido Schimmel. 9) Deal with sub-optimal GSO packets better in BBR congestion control, from Eric Dumazet. 10) Support 5-tuple hashing in ipv6 multipath routing, from David Ahern. 11) Add path MTU tests to selftests, from Stefano Brivio. 12) Various bits of IPSEC offloading support for mlx5, from Aviad Yehezkel, Yossi Kuperman, and Saeed Mahameed. 13) Support RSS spreading on ntuple filters in SFC driver, from Edward Cree. 14) Lots of sockmap work from John Fastabend. Applications can use eBPF to filter sendmsg and sendpage operations. 15) In-kernel receive TLS support, from Dave Watson. 16) Add XDP support to ixgbevf, this is significant because it should allow optimized XDP usage in various cloud environments. From Tony Nguyen. 17) Add new Intel E800 series "ice" ethernet driver, from Anirudh Venkataramanan et al. 18) IP fragmentation match offload support in nfp driver, from Pieter Jansen van Vuuren. 19) Support XDP redirect in i40e driver, from Björn Töpel. 20) Add BPF_RAW_TRACEPOINT program type for accessing the arguments of tracepoints in their raw form, from Alexei Starovoitov. 21) Lots of striding RQ improvements to mlx5 driver with many performance improvements, from Tariq Toukan. 22) Use rhashtable for inet frag reassembly, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1678 commits) net: mvneta: improve suspend/resume net: mvneta: split rxq/txq init and txq deinit into SW and HW parts ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh net: bgmac: Fix endian access in bgmac_dma_tx_ring_free() net: bgmac: Correctly annotate register space route: check sysctl_fib_multipath_use_neigh earlier than hash fix typo in command value in drivers/net/phy/mdio-bitbang. sky2: Increase D3 delay to sky2 stops working after suspend net/mlx5e: Set EQE based as default TX interrupt moderation mode ibmvnic: Disable irqs before exiting reset from closed state net: sched: do not emit messages while holding spinlock vlan: also check phy_driver ts_info for vlan's real device Bluetooth: Mark expected switch fall-throughs Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME Bluetooth: btrsi: remove unused including <linux/version.h> Bluetooth: hci_bcm: Remove DMI quirk for the MINIX Z83-4 sh_eth: kill useless check in __sh_eth_get_regs() sh_eth: add sh_eth_cpu_data::no_xdfar flag ipv6: factorize sk_wmem_alloc updates done by __ip6_append_data() ipv4: factorize sk_wmem_alloc updates done by __ip_append_data() ...
Diffstat (limited to 'drivers/bluetooth/btuart_cs.c')
-rw-r--r--drivers/bluetooth/btuart_cs.c675
1 files changed, 0 insertions, 675 deletions
diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
deleted file mode 100644
index 310e9c2e09b6..000000000000
--- a/drivers/bluetooth/btuart_cs.c
+++ /dev/null
@@ -1,675 +0,0 @@
-/*
- *
- * Driver for Bluetooth PCMCIA cards with HCI UART interface
- *
- * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation;
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The initial developer of the original code is David A. Hinds
- * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
- * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
- *
- */
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/spinlock.h>
-#include <linux/moduleparam.h>
-
-#include <linux/skbuff.h>
-#include <linux/string.h>
-#include <linux/serial.h>
-#include <linux/serial_reg.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ciscode.h>
-#include <pcmcia/ds.h>
-#include <pcmcia/cisreg.h>
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-
-
-
-/* ======================== Module parameters ======================== */
-
-
-MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
-MODULE_DESCRIPTION("Bluetooth driver for Bluetooth PCMCIA cards with HCI UART interface");
-MODULE_LICENSE("GPL");
-
-
-
-/* ======================== Local structures ======================== */
-
-
-struct btuart_info {
- struct pcmcia_device *p_dev;
-
- struct hci_dev *hdev;
-
- spinlock_t lock; /* For serializing operations */
-
- struct sk_buff_head txq;
- unsigned long tx_state;
-
- unsigned long rx_state;
- unsigned long rx_count;
- struct sk_buff *rx_skb;
-};
-
-
-static int btuart_config(struct pcmcia_device *link);
-static void btuart_release(struct pcmcia_device *link);
-
-static void btuart_detach(struct pcmcia_device *p_dev);
-
-
-/* Maximum baud rate */
-#define SPEED_MAX 115200
-
-/* Default baud rate: 57600, 115200, 230400 or 460800 */
-#define DEFAULT_BAUD_RATE 115200
-
-
-/* Transmit states */
-#define XMIT_SENDING 1
-#define XMIT_WAKEUP 2
-#define XMIT_WAITING 8
-
-/* Receiver states */
-#define RECV_WAIT_PACKET_TYPE 0
-#define RECV_WAIT_EVENT_HEADER 1
-#define RECV_WAIT_ACL_HEADER 2
-#define RECV_WAIT_SCO_HEADER 3
-#define RECV_WAIT_DATA 4
-
-
-
-/* ======================== Interrupt handling ======================== */
-
-
-static int btuart_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
-{
- int actual = 0;
-
- /* Tx FIFO should be empty */
- if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
- return 0;
-
- /* Fill FIFO with current frame */
- while ((fifo_size-- > 0) && (actual < len)) {
- /* Transmit next byte */
- outb(buf[actual], iobase + UART_TX);
- actual++;
- }
-
- return actual;
-}
-
-
-static void btuart_write_wakeup(struct btuart_info *info)
-{
- if (!info) {
- BT_ERR("Unknown device");
- return;
- }
-
- if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
- set_bit(XMIT_WAKEUP, &(info->tx_state));
- return;
- }
-
- do {
- unsigned int iobase = info->p_dev->resource[0]->start;
- register struct sk_buff *skb;
- int len;
-
- clear_bit(XMIT_WAKEUP, &(info->tx_state));
-
- if (!pcmcia_dev_present(info->p_dev))
- return;
-
- skb = skb_dequeue(&(info->txq));
- if (!skb)
- break;
-
- /* Send frame */
- len = btuart_write(iobase, 16, skb->data, skb->len);
- set_bit(XMIT_WAKEUP, &(info->tx_state));
-
- if (len == skb->len) {
- kfree_skb(skb);
- } else {
- skb_pull(skb, len);
- skb_queue_head(&(info->txq), skb);
- }
-
- info->hdev->stat.byte_tx += len;
-
- } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
-
- clear_bit(XMIT_SENDING, &(info->tx_state));
-}
-
-
-static void btuart_receive(struct btuart_info *info)
-{
- unsigned int iobase;
- int boguscount = 0;
-
- if (!info) {
- BT_ERR("Unknown device");
- return;
- }
-
- iobase = info->p_dev->resource[0]->start;
-
- do {
- info->hdev->stat.byte_rx++;
-
- /* Allocate packet */
- if (!info->rx_skb) {
- info->rx_state = RECV_WAIT_PACKET_TYPE;
- info->rx_count = 0;
- info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
- if (!info->rx_skb) {
- BT_ERR("Can't allocate mem for new packet");
- return;
- }
- }
-
- if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
-
- hci_skb_pkt_type(info->rx_skb) = inb(iobase + UART_RX);
-
- switch (hci_skb_pkt_type(info->rx_skb)) {
-
- case HCI_EVENT_PKT:
- info->rx_state = RECV_WAIT_EVENT_HEADER;
- info->rx_count = HCI_EVENT_HDR_SIZE;
- break;
-
- case HCI_ACLDATA_PKT:
- info->rx_state = RECV_WAIT_ACL_HEADER;
- info->rx_count = HCI_ACL_HDR_SIZE;
- break;
-
- case HCI_SCODATA_PKT:
- info->rx_state = RECV_WAIT_SCO_HEADER;
- info->rx_count = HCI_SCO_HDR_SIZE;
- break;
-
- default:
- /* Unknown packet */
- BT_ERR("Unknown HCI packet with type 0x%02x received",
- hci_skb_pkt_type(info->rx_skb));
- info->hdev->stat.err_rx++;
-
- kfree_skb(info->rx_skb);
- info->rx_skb = NULL;
- break;
-
- }
-
- } else {
-
- skb_put_u8(info->rx_skb, inb(iobase + UART_RX));
- info->rx_count--;
-
- if (info->rx_count == 0) {
-
- int dlen;
- struct hci_event_hdr *eh;
- struct hci_acl_hdr *ah;
- struct hci_sco_hdr *sh;
-
-
- switch (info->rx_state) {
-
- case RECV_WAIT_EVENT_HEADER:
- eh = hci_event_hdr(info->rx_skb);
- info->rx_state = RECV_WAIT_DATA;
- info->rx_count = eh->plen;
- break;
-
- case RECV_WAIT_ACL_HEADER:
- ah = hci_acl_hdr(info->rx_skb);
- dlen = __le16_to_cpu(ah->dlen);
- info->rx_state = RECV_WAIT_DATA;
- info->rx_count = dlen;
- break;
-
- case RECV_WAIT_SCO_HEADER:
- sh = hci_sco_hdr(info->rx_skb);
- info->rx_state = RECV_WAIT_DATA;
- info->rx_count = sh->dlen;
- break;
-
- case RECV_WAIT_DATA:
- hci_recv_frame(info->hdev, info->rx_skb);
- info->rx_skb = NULL;
- break;
-
- }
-
- }
-
- }
-
- /* Make sure we don't stay here too long */
- if (boguscount++ > 16)
- break;
-
- } while (inb(iobase + UART_LSR) & UART_LSR_DR);
-}
-
-
-static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
-{
- struct btuart_info *info = dev_inst;
- unsigned int iobase;
- int boguscount = 0;
- int iir, lsr;
- irqreturn_t r = IRQ_NONE;
-
- if (!info || !info->hdev)
- /* our irq handler is shared */
- return IRQ_NONE;
-
- iobase = info->p_dev->resource[0]->start;
-
- spin_lock(&(info->lock));
-
- iir = inb(iobase + UART_IIR) & UART_IIR_ID;
- while (iir) {
- r = IRQ_HANDLED;
-
- /* Clear interrupt */
- lsr = inb(iobase + UART_LSR);
-
- switch (iir) {
- case UART_IIR_RLSI:
- BT_ERR("RLSI");
- break;
- case UART_IIR_RDI:
- /* Receive interrupt */
- btuart_receive(info);
- break;
- case UART_IIR_THRI:
- if (lsr & UART_LSR_THRE) {
- /* Transmitter ready for data */
- btuart_write_wakeup(info);
- }
- break;
- default:
- BT_ERR("Unhandled IIR=%#x", iir);
- break;
- }
-
- /* Make sure we don't stay here too long */
- if (boguscount++ > 100)
- break;
-
- iir = inb(iobase + UART_IIR) & UART_IIR_ID;
-
- }
-
- spin_unlock(&(info->lock));
-
- return r;
-}
-
-
-static void btuart_change_speed(struct btuart_info *info,
- unsigned int speed)
-{
- unsigned long flags;
- unsigned int iobase;
- int fcr; /* FIFO control reg */
- int lcr; /* Line control reg */
- int divisor;
-
- if (!info) {
- BT_ERR("Unknown device");
- return;
- }
-
- iobase = info->p_dev->resource[0]->start;
-
- spin_lock_irqsave(&(info->lock), flags);
-
- /* Turn off interrupts */
- outb(0, iobase + UART_IER);
-
- divisor = SPEED_MAX / speed;
-
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT;
-
- /*
- * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
- * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
- * about this timeout since it will always be fast enough.
- */
-
- if (speed < 38400)
- fcr |= UART_FCR_TRIGGER_1;
- else
- fcr |= UART_FCR_TRIGGER_14;
-
- /* Bluetooth cards use 8N1 */
- lcr = UART_LCR_WLEN8;
-
- outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
- outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */
- outb(divisor >> 8, iobase + UART_DLM);
- outb(lcr, iobase + UART_LCR); /* Set 8N1 */
- outb(fcr, iobase + UART_FCR); /* Enable FIFO's */
-
- /* Turn on interrupts */
- outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
-
- spin_unlock_irqrestore(&(info->lock), flags);
-}
-
-
-
-/* ======================== HCI interface ======================== */
-
-
-static int btuart_hci_flush(struct hci_dev *hdev)
-{
- struct btuart_info *info = hci_get_drvdata(hdev);
-
- /* Drop TX queue */
- skb_queue_purge(&(info->txq));
-
- return 0;
-}
-
-
-static int btuart_hci_open(struct hci_dev *hdev)
-{
- return 0;
-}
-
-
-static int btuart_hci_close(struct hci_dev *hdev)
-{
- btuart_hci_flush(hdev);
-
- return 0;
-}
-
-
-static int btuart_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
-{
- struct btuart_info *info = hci_get_drvdata(hdev);
-
- switch (hci_skb_pkt_type(skb)) {
- case HCI_COMMAND_PKT:
- hdev->stat.cmd_tx++;
- break;
- case HCI_ACLDATA_PKT:
- hdev->stat.acl_tx++;
- break;
- case HCI_SCODATA_PKT:
- hdev->stat.sco_tx++;
- break;
- }
-
- /* Prepend skb with frame type */
- memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
- skb_queue_tail(&(info->txq), skb);
-
- btuart_write_wakeup(info);
-
- return 0;
-}
-
-
-
-/* ======================== Card services HCI interaction ======================== */
-
-
-static int btuart_open(struct btuart_info *info)
-{
- unsigned long flags;
- unsigned int iobase = info->p_dev->resource[0]->start;
- struct hci_dev *hdev;
-
- spin_lock_init(&(info->lock));
-
- skb_queue_head_init(&(info->txq));
-
- info->rx_state = RECV_WAIT_PACKET_TYPE;
- info->rx_count = 0;
- info->rx_skb = NULL;
-
- /* Initialize HCI device */
- hdev = hci_alloc_dev();
- if (!hdev) {
- BT_ERR("Can't allocate HCI device");
- return -ENOMEM;
- }
-
- info->hdev = hdev;
-
- hdev->bus = HCI_PCCARD;
- hci_set_drvdata(hdev, info);
- SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
-
- hdev->open = btuart_hci_open;
- hdev->close = btuart_hci_close;
- hdev->flush = btuart_hci_flush;
- hdev->send = btuart_hci_send_frame;
-
- spin_lock_irqsave(&(info->lock), flags);
-
- /* Reset UART */
- outb(0, iobase + UART_MCR);
-
- /* Turn off interrupts */
- outb(0, iobase + UART_IER);
-
- /* Initialize UART */
- outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
- outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
-
- /* Turn on interrupts */
- // outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
-
- spin_unlock_irqrestore(&(info->lock), flags);
-
- btuart_change_speed(info, DEFAULT_BAUD_RATE);
-
- /* Timeout before it is safe to send the first HCI packet */
- msleep(1000);
-
- /* Register HCI device */
- if (hci_register_dev(hdev) < 0) {
- BT_ERR("Can't register HCI device");
- info->hdev = NULL;
- hci_free_dev(hdev);
- return -ENODEV;
- }
-
- return 0;
-}
-
-
-static int btuart_close(struct btuart_info *info)
-{
- unsigned long flags;
- unsigned int iobase = info->p_dev->resource[0]->start;
- struct hci_dev *hdev = info->hdev;
-
- if (!hdev)
- return -ENODEV;
-
- btuart_hci_close(hdev);
-
- spin_lock_irqsave(&(info->lock), flags);
-
- /* Reset UART */
- outb(0, iobase + UART_MCR);
-
- /* Turn off interrupts */
- outb(0, iobase + UART_IER);
-
- spin_unlock_irqrestore(&(info->lock), flags);
-
- hci_unregister_dev(hdev);
- hci_free_dev(hdev);
-
- return 0;
-}
-
-static int btuart_probe(struct pcmcia_device *link)
-{
- struct btuart_info *info;
-
- /* Create new info device */
- info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- info->p_dev = link;
- link->priv = info;
-
- link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
- CONF_AUTO_SET_IO;
-
- return btuart_config(link);
-}
-
-
-static void btuart_detach(struct pcmcia_device *link)
-{
- btuart_release(link);
-}
-
-static int btuart_check_config(struct pcmcia_device *p_dev, void *priv_data)
-{
- int *try = priv_data;
-
- if (!try)
- p_dev->io_lines = 16;
-
- if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0))
- return -EINVAL;
-
- p_dev->resource[0]->end = 8;
- p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
- p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
-
- return pcmcia_request_io(p_dev);
-}
-
-static int btuart_check_config_notpicky(struct pcmcia_device *p_dev,
- void *priv_data)
-{
- static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
- int j;
-
- if (p_dev->io_lines > 3)
- return -ENODEV;
-
- p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
- p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
- p_dev->resource[0]->end = 8;
-
- for (j = 0; j < 5; j++) {
- p_dev->resource[0]->start = base[j];
- p_dev->io_lines = base[j] ? 16 : 3;
- if (!pcmcia_request_io(p_dev))
- return 0;
- }
- return -ENODEV;
-}
-
-static int btuart_config(struct pcmcia_device *link)
-{
- struct btuart_info *info = link->priv;
- int i;
- int try;
-
- /* First pass: look for a config entry that looks normal.
- * Two tries: without IO aliases, then with aliases
- */
- for (try = 0; try < 2; try++)
- if (!pcmcia_loop_config(link, btuart_check_config, &try))
- goto found_port;
-
- /* Second pass: try to find an entry that isn't picky about
- * its base address, then try to grab any standard serial port
- * address, and finally try to get any free port.
- */
- if (!pcmcia_loop_config(link, btuart_check_config_notpicky, NULL))
- goto found_port;
-
- BT_ERR("No usable port range found");
- goto failed;
-
-found_port:
- i = pcmcia_request_irq(link, btuart_interrupt);
- if (i != 0)
- goto failed;
-
- i = pcmcia_enable_device(link);
- if (i != 0)
- goto failed;
-
- if (btuart_open(info) != 0)
- goto failed;
-
- return 0;
-
-failed:
- btuart_release(link);
- return -ENODEV;
-}
-
-
-static void btuart_release(struct pcmcia_device *link)
-{
- struct btuart_info *info = link->priv;
-
- btuart_close(info);
-
- pcmcia_disable_device(link);
-}
-
-static const struct pcmcia_device_id btuart_ids[] = {
- /* don't use this driver. Use serial_cs + hci_uart instead */
- PCMCIA_DEVICE_NULL
-};
-MODULE_DEVICE_TABLE(pcmcia, btuart_ids);
-
-static struct pcmcia_driver btuart_driver = {
- .owner = THIS_MODULE,
- .name = "btuart_cs",
- .probe = btuart_probe,
- .remove = btuart_detach,
- .id_table = btuart_ids,
-};
-module_pcmcia_driver(btuart_driver);