| /* |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Original driver code supplied by Multi-Tech |
| * |
| * Changes |
| * 1/9/98 alan@lxorguk.ukuu.org.uk |
| * Merge to 2.0.x kernel tree |
| * Obtain and use official major/minors |
| * Loader switched to a misc device |
| * (fixed range check bug as a side effect) |
| * Printk clean up |
| * 9/12/98 alan@lxorguk.ukuu.org.uk |
| * Rough port to 2.1.x |
| * |
| * 10/6/99 sameer Merged the ISA and PCI drivers to |
| * a new unified driver. |
| * |
| * 3/9/99 sameer Added support for ISI4616 cards. |
| * |
| * 16/9/99 sameer We do not force RTS low anymore. |
| * This is to prevent the firmware |
| * from getting confused. |
| * |
| * 26/10/99 sameer Cosmetic changes:The driver now |
| * dumps the Port Count information |
| * along with I/O address and IRQ. |
| * |
| * 13/12/99 sameer Fixed the problem with IRQ sharing. |
| * |
| * 10/5/00 sameer Fixed isicom_shutdown_board() |
| * to not lower DTR on all the ports |
| * when the last port on the card is |
| * closed. |
| * |
| * 10/5/00 sameer Signal mask setup command added |
| * to isicom_setup_port and |
| * isicom_shutdown_port. |
| * |
| * 24/5/00 sameer The driver is now SMP aware. |
| * |
| * |
| * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
| * |
| * |
| * 03/01/01 anil .s Added support for resetting the |
| * internal modems on ISI cards. |
| * |
| * 08/02/01 anil .s Upgraded the driver for kernel |
| * 2.4.x |
| * |
| * 11/04/01 Kevin Fixed firmware load problem with |
| * ISIHP-4X card |
| * |
| * 30/04/01 anil .s Fixed the remote login through |
| * ISI port problem. Now the link |
| * does not go down before password |
| * prompt. |
| * |
| * 03/05/01 anil .s Fixed the problem with IRQ sharing |
| * among ISI-PCI cards. |
| * |
| * 03/05/01 anil .s Added support to display the version |
| * info during insmod as well as module |
| * listing by lsmod. |
| * |
| * 10/05/01 anil .s Done the modifications to the source |
| * file and Install script so that the |
| * same installation can be used for |
| * 2.2.x and 2.4.x kernel. |
| * |
| * 06/06/01 anil .s Now we drop both dtr and rts during |
| * shutdown_port as well as raise them |
| * during isicom_config_port. |
| * |
| * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
| * restore_flags on failure in |
| * isicom_send_break, verify put_user |
| * result |
| * |
| * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
| * Baud index extended to 21 |
| * |
| * 20/03/03 ranjeeth Made to work for Linux Advanced server. |
| * Taken care of license warning. |
| * |
| * 10/12/03 Ravindra Made to work for Fedora Core 1 of |
| * Red Hat Distribution |
| * |
| * 06/01/05 Alan Cox Merged the ISI and base kernel strands |
| * into a single 2.6 driver |
| * |
| * *********************************************************** |
| * |
| * To use this driver you also need the support package. You |
| * can find this in RPM format on |
| * ftp://ftp.linux.org.uk/pub/linux/alan |
| * |
| * You can find the original tools for this direct from Multitech |
| * ftp://ftp.multitech.com/ISI-Cards/ |
| * |
| * Having installed the cards the module options (/etc/modprobe.conf) |
| * |
| * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 |
| * |
| * Omit those entries for boards you don't have installed. |
| * |
| * TODO |
| * Merge testing |
| * 64-bit verification |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/firmware.h> |
| #include <linux/kernel.h> |
| #include <linux/tty.h> |
| #include <linux/tty_flip.h> |
| #include <linux/termios.h> |
| #include <linux/fs.h> |
| #include <linux/sched.h> |
| #include <linux/serial.h> |
| #include <linux/mm.h> |
| #include <linux/interrupt.h> |
| #include <linux/timer.h> |
| #include <linux/delay.h> |
| #include <linux/ioport.h> |
| #include <linux/slab.h> |
| |
| #include <linux/uaccess.h> |
| #include <linux/io.h> |
| #include <asm/system.h> |
| |
| #include <linux/pci.h> |
| |
| #include <linux/isicom.h> |
| |
| #define InterruptTheCard(base) outw(0, (base) + 0xc) |
| #define ClearInterrupt(base) inw((base) + 0x0a) |
| |
| #ifdef DEBUG |
| #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
| #else |
| #define isicom_paranoia_check(a, b, c) 0 |
| #endif |
| |
| static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
| static void __devexit isicom_remove(struct pci_dev *); |
| |
| static struct pci_device_id isicom_pci_tbl[] = { |
| { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2051) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2052) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2053) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2054) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2055) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2056) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2057) }, |
| { PCI_DEVICE(VENDOR_ID, 0x2058) }, |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); |
| |
| static struct pci_driver isicom_driver = { |
| .name = "isicom", |
| .id_table = isicom_pci_tbl, |
| .probe = isicom_probe, |
| .remove = __devexit_p(isicom_remove) |
| }; |
| |
| static int prev_card = 3; /* start servicing isi_card[0] */ |
| static struct tty_driver *isicom_normal; |
| |
| static void isicom_tx(unsigned long _data); |
| static void isicom_start(struct tty_struct *tty); |
| |
| static DEFINE_TIMER(tx, isicom_tx, 0, 0); |
| |
| /* baud index mappings from linux defns to isi */ |
| |
| static signed char linuxb_to_isib[] = { |
| -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
| }; |
| |
| struct isi_board { |
| unsigned long base; |
| int irq; |
| unsigned char port_count; |
| unsigned short status; |
| unsigned short port_status; /* each bit for each port */ |
| unsigned short shift_count; |
| struct isi_port *ports; |
| signed char count; |
| spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
| unsigned long flags; |
| unsigned int index; |
| }; |
| |
| struct isi_port { |
| unsigned short magic; |
| struct tty_port port; |
| u16 channel; |
| u16 status; |
| struct isi_board *card; |
| unsigned char *xmit_buf; |
| int xmit_head; |
| int xmit_tail; |
| int xmit_cnt; |
| }; |
| |
| static struct isi_board isi_card[BOARD_COUNT]; |
| static struct isi_port isi_ports[PORT_COUNT]; |
| |
| /* |
| * Locking functions for card level locking. We need to own both |
| * the kernel lock for the card and have the card in a position that |
| * it wants to talk. |
| */ |
| |
| static inline int WaitTillCardIsFree(unsigned long base) |
| { |
| unsigned int count = 0; |
| unsigned int a = in_atomic(); /* do we run under spinlock? */ |
| |
| while (!(inw(base + 0xe) & 0x1) && count++ < 100) |
| if (a) |
| mdelay(1); |
| else |
| msleep(1); |
| |
| return !(inw(base + 0xe) & 0x1); |
| } |
| |
| static int lock_card(struct isi_board *card) |
| { |
| unsigned long base = card->base; |
| unsigned int retries, a; |
| |
| for (retries = 0; retries < 10; retries++) { |
| spin_lock_irqsave(&card->card_lock, card->flags); |
| for (a = 0; a < 10; a++) { |
| if (inw(base + 0xe) & 0x1) |
| return 1; |
| udelay(10); |
| } |
| spin_unlock_irqrestore(&card->card_lock, card->flags); |
| msleep(10); |
| } |
| pr_warning("Failed to lock Card (0x%lx)\n", card->base); |
| |
| return 0; /* Failed to acquire the card! */ |
| } |
| |
| static void unlock_card(struct isi_board *card) |
| { |
| spin_unlock_irqrestore(&card->card_lock, card->flags); |
| } |
| |
| /* |
| * ISI Card specific ops ... |
| */ |
| |
| /* card->lock HAS to be held */ |
| static void raise_dtr(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| u16 channel = port->channel; |
| |
| if (WaitTillCardIsFree(base)) |
| return; |
| |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0504, base); |
| InterruptTheCard(base); |
| port->status |= ISI_DTR; |
| } |
| |
| /* card->lock HAS to be held */ |
| static inline void drop_dtr(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| u16 channel = port->channel; |
| |
| if (WaitTillCardIsFree(base)) |
| return; |
| |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0404, base); |
| InterruptTheCard(base); |
| port->status &= ~ISI_DTR; |
| } |
| |
| /* card->lock HAS to be held */ |
| static inline void raise_rts(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| u16 channel = port->channel; |
| |
| if (WaitTillCardIsFree(base)) |
| return; |
| |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0a04, base); |
| InterruptTheCard(base); |
| port->status |= ISI_RTS; |
| } |
| |
| /* card->lock HAS to be held */ |
| static inline void drop_rts(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| u16 channel = port->channel; |
| |
| if (WaitTillCardIsFree(base)) |
| return; |
| |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0804, base); |
| InterruptTheCard(base); |
| port->status &= ~ISI_RTS; |
| } |
| |
| /* card->lock MUST NOT be held */ |
| |
| static void isicom_dtr_rts(struct tty_port *port, int on) |
| { |
| struct isi_port *ip = container_of(port, struct isi_port, port); |
| struct isi_board *card = ip->card; |
| unsigned long base = card->base; |
| u16 channel = ip->channel; |
| |
| if (!lock_card(card)) |
| return; |
| |
| if (on) { |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0f04, base); |
| InterruptTheCard(base); |
| ip->status |= (ISI_DTR | ISI_RTS); |
| } else { |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0C04, base); |
| InterruptTheCard(base); |
| ip->status &= ~(ISI_DTR | ISI_RTS); |
| } |
| unlock_card(card); |
| } |
| |
| /* card->lock HAS to be held */ |
| static void drop_dtr_rts(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| u16 channel = port->channel; |
| |
| if (WaitTillCardIsFree(base)) |
| return; |
| |
| outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| outw(0x0c04, base); |
| InterruptTheCard(base); |
| port->status &= ~(ISI_RTS | ISI_DTR); |
| } |
| |
| /* |
| * ISICOM Driver specific routines ... |
| * |
| */ |
| |
| static inline int __isicom_paranoia_check(struct isi_port const *port, |
| char *name, const char *routine) |
| { |
| if (!port) { |
| pr_warning("Warning: bad isicom magic for dev %s in %s.\n", |
| name, routine); |
| return 1; |
| } |
| if (port->magic != ISICOM_MAGIC) { |
| pr_warning("Warning: NULL isicom port for dev %s in %s.\n", |
| name, routine); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Transmitter. |
| * |
| * We shovel data into the card buffers on a regular basis. The card |
| * will do the rest of the work for us. |
| */ |
| |
| static void isicom_tx(unsigned long _data) |
| { |
| unsigned long flags, base; |
| unsigned int retries; |
| short count = (BOARD_COUNT-1), card; |
| short txcount, wrd, residue, word_count, cnt; |
| struct isi_port *port; |
| struct tty_struct *tty; |
| |
| /* find next active board */ |
| card = (prev_card + 1) & 0x0003; |
| while (count-- > 0) { |
| if (isi_card[card].status & BOARD_ACTIVE) |
| break; |
| card = (card + 1) & 0x0003; |
| } |
| if (!(isi_card[card].status & BOARD_ACTIVE)) |
| goto sched_again; |
| |
| prev_card = card; |
| |
| count = isi_card[card].port_count; |
| port = isi_card[card].ports; |
| base = isi_card[card].base; |
| |
| spin_lock_irqsave(&isi_card[card].card_lock, flags); |
| for (retries = 0; retries < 100; retries++) { |
| if (inw(base + 0xe) & 0x1) |
| break; |
| udelay(2); |
| } |
| if (retries >= 100) |
| goto unlock; |
| |
| tty = tty_port_tty_get(&port->port); |
| if (tty == NULL) |
| goto put_unlock; |
| |
| for (; count > 0; count--, port++) { |
| /* port not active or tx disabled to force flow control */ |
| if (!(port->port.flags & ASYNC_INITIALIZED) || |
| !(port->status & ISI_TXOK)) |
| continue; |
| |
| txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
| if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
| continue; |
| |
| if (!(inw(base + 0x02) & (1 << port->channel))) |
| continue; |
| |
| pr_debug("txing %d bytes, port%d.\n", |
| txcount, port->channel + 1); |
| outw((port->channel << isi_card[card].shift_count) | txcount, |
| base); |
| residue = NO; |
| wrd = 0; |
| while (1) { |
| cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
| - port->xmit_tail)); |
| if (residue == YES) { |
| residue = NO; |
| if (cnt > 0) { |
| wrd |= (port->port.xmit_buf[port->xmit_tail] |
| << 8); |
| port->xmit_tail = (port->xmit_tail + 1) |
| & (SERIAL_XMIT_SIZE - 1); |
| port->xmit_cnt--; |
| txcount--; |
| cnt--; |
| outw(wrd, base); |
| } else { |
| outw(wrd, base); |
| break; |
| } |
| } |
| if (cnt <= 0) |
| break; |
| word_count = cnt >> 1; |
| outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); |
| port->xmit_tail = (port->xmit_tail |
| + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); |
| txcount -= (word_count << 1); |
| port->xmit_cnt -= (word_count << 1); |
| if (cnt & 0x0001) { |
| residue = YES; |
| wrd = port->port.xmit_buf[port->xmit_tail]; |
| port->xmit_tail = (port->xmit_tail + 1) |
| & (SERIAL_XMIT_SIZE - 1); |
| port->xmit_cnt--; |
| txcount--; |
| } |
| } |
| |
| InterruptTheCard(base); |
| if (port->xmit_cnt <= 0) |
| port->status &= ~ISI_TXOK; |
| if (port->xmit_cnt <= WAKEUP_CHARS) |
| tty_wakeup(tty); |
| } |
| |
| put_unlock: |
| tty_kref_put(tty); |
| unlock: |
| spin_unlock_irqrestore(&isi_card[card].card_lock, flags); |
| /* schedule another tx for hopefully in about 10ms */ |
| sched_again: |
| mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
| } |
| |
| /* |
| * Main interrupt handler routine |
| */ |
| |
| static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
| { |
| struct isi_board *card = dev_id; |
| struct isi_port *port; |
| struct tty_struct *tty; |
| unsigned long base; |
| u16 header, word_count, count, channel; |
| short byte_count; |
| unsigned char *rp; |
| |
| if (!card || !(card->status & FIRMWARE_LOADED)) |
| return IRQ_NONE; |
| |
| base = card->base; |
| |
| /* did the card interrupt us? */ |
| if (!(inw(base + 0x0e) & 0x02)) |
| return IRQ_NONE; |
| |
| spin_lock(&card->card_lock); |
| |
| /* |
| * disable any interrupts from the PCI card and lower the |
| * interrupt line |
| */ |
| outw(0x8000, base+0x04); |
| ClearInterrupt(base); |
| |
| inw(base); /* get the dummy word out */ |
| header = inw(base); |
| channel = (header & 0x7800) >> card->shift_count; |
| byte_count = header & 0xff; |
| |
| if (channel + 1 > card->port_count) { |
| pr_warning("%s(0x%lx): %d(channel) > port_count.\n", |
| __func__, base, channel+1); |
| outw(0x0000, base+0x04); /* enable interrupts */ |
| spin_unlock(&card->card_lock); |
| return IRQ_HANDLED; |
| } |
| port = card->ports + channel; |
| if (!(port->port.flags & ASYNC_INITIALIZED)) { |
| outw(0x0000, base+0x04); /* enable interrupts */ |
| spin_unlock(&card->card_lock); |
| return IRQ_HANDLED; |
| } |
| |
| tty = tty_port_tty_get(&port->port); |
| if (tty == NULL) { |
| word_count = byte_count >> 1; |
| while (byte_count > 1) { |
| inw(base); |
| byte_count -= 2; |
| } |
| if (byte_count & 0x01) |
| inw(base); |
| outw(0x0000, base+0x04); /* enable interrupts */ |
| spin_unlock(&card->card_lock); |
| return IRQ_HANDLED; |
| } |
| |
| if (header & 0x8000) { /* Status Packet */ |
| header = inw(base); |
| switch (header & 0xff) { |
| case 0: /* Change in EIA signals */ |
| if (port->port.flags & ASYNC_CHECK_CD) { |
| if (port->status & ISI_DCD) { |
| if (!(header & ISI_DCD)) { |
| /* Carrier has been lost */ |
| pr_debug("%s: DCD->low.\n", |
| __func__); |
| port->status &= ~ISI_DCD; |
| tty_hangup(tty); |
| } |
| } else if (header & ISI_DCD) { |
| /* Carrier has been detected */ |
| pr_debug("%s: DCD->high.\n", |
| __func__); |
| port->status |= ISI_DCD; |
| wake_up_interruptible(&port->port.open_wait); |
| } |
| } else { |
| if (header & ISI_DCD) |
| port->status |= ISI_DCD; |
| else |
| port->status &= ~ISI_DCD; |
| } |
| |
| if (port->port.flags & ASYNC_CTS_FLOW) { |
| if (tty->hw_stopped) { |
| if (header & ISI_CTS) { |
| port->port.tty->hw_stopped = 0; |
| /* start tx ing */ |
| port->status |= (ISI_TXOK |
| | ISI_CTS); |
| tty_wakeup(tty); |
| } |
| } else if (!(header & ISI_CTS)) { |
| tty->hw_stopped = 1; |
| /* stop tx ing */ |
| port->status &= ~(ISI_TXOK | ISI_CTS); |
| } |
| } else { |
| if (header & ISI_CTS) |
| port->status |= ISI_CTS; |
| else |
| port->status &= ~ISI_CTS; |
| } |
| |
| if (header & ISI_DSR) |
| port->status |= ISI_DSR; |
| else |
| port->status &= ~ISI_DSR; |
| |
| if (header & ISI_RI) |
| port->status |= ISI_RI; |
| else |
| port->status &= ~ISI_RI; |
| |
| break; |
| |
| case 1: /* Received Break !!! */ |
| tty_insert_flip_char(tty, 0, TTY_BREAK); |
| if (port->port.flags & ASYNC_SAK) |
| do_SAK(tty); |
| tty_flip_buffer_push(tty); |
| break; |
| |
| case 2: /* Statistics */ |
| pr_debug("%s: stats!!!\n", __func__); |
| break; |
| |
| default: |
| pr_debug("%s: Unknown code in status packet.\n", |
| __func__); |
| break; |
| } |
| } else { /* Data Packet */ |
| |
| count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); |
| pr_debug("%s: Can rx %d of %d bytes.\n", |
| __func__, count, byte_count); |
| word_count = count >> 1; |
| insw(base, rp, word_count); |
| byte_count -= (word_count << 1); |
| if (count & 0x0001) { |
| tty_insert_flip_char(tty, inw(base) & 0xff, |
| TTY_NORMAL); |
| byte_count -= 2; |
| } |
| if (byte_count > 0) { |
| pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", |
| __func__, base, channel + 1); |
| /* drain out unread xtra data */ |
| while (byte_count > 0) { |
| inw(base); |
| byte_count -= 2; |
| } |
| } |
| tty_flip_buffer_push(tty); |
| } |
| outw(0x0000, base+0x04); /* enable interrupts */ |
| spin_unlock(&card->card_lock); |
| tty_kref_put(tty); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void isicom_config_port(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| unsigned long baud; |
| unsigned long base = card->base; |
| u16 channel_setup, channel = port->channel, |
| shift_count = card->shift_count; |
| unsigned char flow_ctrl; |
| |
| /* FIXME: Switch to new tty baud API */ |
| baud = C_BAUD(tty); |
| if (baud & CBAUDEX) { |
| baud &= ~CBAUDEX; |
| |
| /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
| * then the card is programmed for 57.6Kbps or 115Kbps |
| * respectively. |
| */ |
| |
| /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ |
| if (baud < 1 || baud > 4) |
| tty->termios->c_cflag &= ~CBAUDEX; |
| else |
| baud += 15; |
| } |
| if (baud == 15) { |
| |
| /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set |
| * by the set_serial_info ioctl ... this is done by |
| * the 'setserial' utility. |
| */ |
| |
| if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| baud++; /* 57.6 Kbps */ |
| if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| baud += 2; /* 115 Kbps */ |
| if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| baud += 3; /* 230 kbps*/ |
| if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| baud += 4; /* 460 kbps*/ |
| } |
| if (linuxb_to_isib[baud] == -1) { |
| /* hang up */ |
| drop_dtr(port); |
| return; |
| } else |
| raise_dtr(port); |
| |
| if (WaitTillCardIsFree(base) == 0) { |
| outw(0x8000 | (channel << shift_count) | 0x03, base); |
| outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
| channel_setup = 0; |
| switch (C_CSIZE(tty)) { |
| case CS5: |
| channel_setup |= ISICOM_CS5; |
| break; |
| case CS6: |
| channel_setup |= ISICOM_CS6; |
| break; |
| case CS7: |
| channel_setup |= ISICOM_CS7; |
| break; |
| case CS8: |
| channel_setup |= ISICOM_CS8; |
| break; |
| } |
| |
| if (C_CSTOPB(tty)) |
| channel_setup |= ISICOM_2SB; |
| if (C_PARENB(tty)) { |
| channel_setup |= ISICOM_EVPAR; |
| if (C_PARODD(tty)) |
| channel_setup |= ISICOM_ODPAR; |
| } |
| outw(channel_setup, base); |
| InterruptTheCard(base); |
| } |
| if (C_CLOCAL(tty)) |
| port->port.flags &= ~ASYNC_CHECK_CD; |
| else |
| port->port.flags |= ASYNC_CHECK_CD; |
| |
| /* flow control settings ...*/ |
| flow_ctrl = 0; |
| port->port.flags &= ~ASYNC_CTS_FLOW; |
| if (C_CRTSCTS(tty)) { |
| port->port.flags |= ASYNC_CTS_FLOW; |
| flow_ctrl |= ISICOM_CTSRTS; |
| } |
| if (I_IXON(tty)) |
| flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
| if (I_IXOFF(tty)) |
| flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
| |
| if (WaitTillCardIsFree(base) == 0) { |
| outw(0x8000 | (channel << shift_count) | 0x04, base); |
| outw(flow_ctrl << 8 | 0x05, base); |
| outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); |
| InterruptTheCard(base); |
| } |
| |
| /* rx enabled -> enable port for rx on the card */ |
| if (C_CREAD(tty)) { |
| card->port_status |= (1 << channel); |
| outw(card->port_status, base + 0x02); |
| } |
| } |
| |
| /* open et all */ |
| |
| static inline void isicom_setup_board(struct isi_board *bp) |
| { |
| int channel; |
| struct isi_port *port; |
| |
| bp->count++; |
| if (!(bp->status & BOARD_INIT)) { |
| port = bp->ports; |
| for (channel = 0; channel < bp->port_count; channel++, port++) |
| drop_dtr_rts(port); |
| } |
| bp->status |= BOARD_ACTIVE | BOARD_INIT; |
| } |
| |
| /* Activate and thus setup board are protected from races against shutdown |
| by the tty_port mutex */ |
| |
| static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) |
| { |
| struct isi_port *port = container_of(tport, struct isi_port, port); |
| struct isi_board *card = port->card; |
| unsigned long flags; |
| |
| if (tty_port_alloc_xmit_buf(tport) < 0) |
| return -ENOMEM; |
| |
| spin_lock_irqsave(&card->card_lock, flags); |
| isicom_setup_board(card); |
| |
| port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
| |
| /* discard any residual data */ |
| if (WaitTillCardIsFree(card->base) == 0) { |
| outw(0x8000 | (port->channel << card->shift_count) | 0x02, |
| card->base); |
| outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); |
| InterruptTheCard(card->base); |
| } |
| isicom_config_port(tty); |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| |
| return 0; |
| } |
| |
| static int isicom_carrier_raised(struct tty_port *port) |
| { |
| struct isi_port *ip = container_of(port, struct isi_port, port); |
| return (ip->status & ISI_DCD)?1 : 0; |
| } |
| |
| static struct tty_port *isicom_find_port(struct tty_struct *tty) |
| { |
| struct isi_port *port; |
| struct isi_board *card; |
| unsigned int board; |
| int line = tty->index; |
| |
| if (line < 0 || line > PORT_COUNT-1) |
| return NULL; |
| board = BOARD(line); |
| card = &isi_card[board]; |
| |
| if (!(card->status & FIRMWARE_LOADED)) |
| return NULL; |
| |
| /* open on a port greater than the port count for the card !!! */ |
| if (line > ((board * 16) + card->port_count - 1)) |
| return NULL; |
| |
| port = &isi_ports[line]; |
| if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
| return NULL; |
| |
| return &port->port; |
| } |
| |
| static int isicom_open(struct tty_struct *tty, struct file *filp) |
| { |
| struct isi_port *port; |
| struct tty_port *tport; |
| |
| tport = isicom_find_port(tty); |
| if (tport == NULL) |
| return -ENODEV; |
| port = container_of(tport, struct isi_port, port); |
| |
| tty->driver_data = port; |
| return tty_port_open(tport, tty, filp); |
| } |
| |
| /* close et all */ |
| |
| /* card->lock HAS to be held */ |
| static void isicom_shutdown_port(struct isi_port *port) |
| { |
| struct isi_board *card = port->card; |
| |
| if (--card->count < 0) { |
| pr_debug("%s: bad board(0x%lx) count %d.\n", |
| __func__, card->base, card->count); |
| card->count = 0; |
| } |
| /* last port was closed, shutdown that board too */ |
| if (!card->count) |
| card->status &= BOARD_ACTIVE; |
| } |
| |
| static void isicom_flush_buffer(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| unsigned long flags; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
| return; |
| |
| spin_lock_irqsave(&card->card_lock, flags); |
| port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| |
| tty_wakeup(tty); |
| } |
| |
| static void isicom_shutdown(struct tty_port *port) |
| { |
| struct isi_port *ip = container_of(port, struct isi_port, port); |
| struct isi_board *card = ip->card; |
| unsigned long flags; |
| |
| /* indicate to the card that no more data can be received |
| on this port */ |
| spin_lock_irqsave(&card->card_lock, flags); |
| card->port_status &= ~(1 << ip->channel); |
| outw(card->port_status, card->base + 0x02); |
| isicom_shutdown_port(ip); |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| tty_port_free_xmit_buf(port); |
| } |
| |
| static void isicom_close(struct tty_struct *tty, struct file *filp) |
| { |
| struct isi_port *ip = tty->driver_data; |
| struct tty_port *port; |
| |
| if (ip == NULL) |
| return; |
| |
| port = &ip->port; |
| if (isicom_paranoia_check(ip, tty->name, "isicom_close")) |
| return; |
| tty_port_close(port, tty, filp); |
| } |
| |
| /* write et all */ |
| static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
| int count) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| unsigned long flags; |
| int cnt, total = 0; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_write")) |
| return 0; |
| |
| spin_lock_irqsave(&card->card_lock, flags); |
| |
| while (1) { |
| cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
| - 1, SERIAL_XMIT_SIZE - port->xmit_head)); |
| if (cnt <= 0) |
| break; |
| |
| memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); |
| port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
| - 1); |
| port->xmit_cnt += cnt; |
| buf += cnt; |
| count -= cnt; |
| total += cnt; |
| } |
| if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
| port->status |= ISI_TXOK; |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| return total; |
| } |
| |
| /* put_char et all */ |
| static int isicom_put_char(struct tty_struct *tty, unsigned char ch) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| unsigned long flags; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
| return 0; |
| |
| spin_lock_irqsave(&card->card_lock, flags); |
| if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| return 0; |
| } |
| |
| port->port.xmit_buf[port->xmit_head++] = ch; |
| port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
| port->xmit_cnt++; |
| spin_unlock_irqrestore(&card->card_lock, flags); |
| return 1; |
| } |
| |
| /* flush_chars et all */ |
| static void isicom_flush_chars(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
| return; |
| |
| if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
| !port->port.xmit_buf) |
| return; |
| |
| /* this tells the transmitter to consider this port for |
| data output to the card ... that's the best we can do. */ |
| port->status |= ISI_TXOK; |
| } |
| |
| /* write_room et all */ |
| static int isicom_write_room(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| int free; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) |
| return 0; |
| |
| free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
| if (free < 0) |
| free = 0; |
| return free; |
| } |
| |
| /* chars_in_buffer et all */ |
| static int isicom_chars_in_buffer(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
| return 0; |
| return port->xmit_cnt; |
| } |
| |
| /* ioctl et all */ |
| static int isicom_send_break(struct tty_struct *tty, int length) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| unsigned long base = card->base; |
| |
| if (length == -1) |
| return -EOPNOTSUPP; |
| |
| if (!lock_card(card)) |
| return -EINVAL; |
| |
| outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
| outw((length & 0xff) << 8 | 0x00, base); |
| outw((length & 0xff00), base); |
| InterruptTheCard(base); |
| |
| unlock_card(card); |
| return 0; |
| } |
| |
| static int isicom_tiocmget(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| /* just send the port status */ |
| u16 status = port->status; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| return -ENODEV; |
| |
| return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
| ((status & ISI_DTR) ? TIOCM_DTR : 0) | |
| ((status & ISI_DCD) ? TIOCM_CAR : 0) | |
| ((status & ISI_DSR) ? TIOCM_DSR : 0) | |
| ((status & ISI_CTS) ? TIOCM_CTS : 0) | |
| ((status & ISI_RI ) ? TIOCM_RI : 0); |
| } |
| |
| static int isicom_tiocmset(struct tty_struct *tty, |
| unsigned int set, unsigned int clear) |
| { |
| struct isi_port *port = tty->driver_data; |
| unsigned long flags; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| return -ENODEV; |
| |
| spin_lock_irqsave(&port->card->card_lock, flags); |
| if (set & TIOCM_RTS) |
| raise_rts(port); |
| if (set & TIOCM_DTR) |
| raise_dtr(port); |
| |
| if (clear & TIOCM_RTS) |
| drop_rts(port); |
| if (clear & TIOCM_DTR) |
| drop_dtr(port); |
| spin_unlock_irqrestore(&port->card->card_lock, flags); |
| |
| return 0; |
| } |
| |
| static int isicom_set_serial_info(struct tty_struct *tty, |
| struct serial_struct __user *info) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct serial_struct newinfo; |
| int reconfig_port; |
| |
| if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
| return -EFAULT; |
| |
| mutex_lock(&port->port.mutex); |
| reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
| (newinfo.flags & ASYNC_SPD_MASK)); |
| |
| if (!capable(CAP_SYS_ADMIN)) { |
| if ((newinfo.close_delay != port->port.close_delay) || |
| (newinfo.closing_wait != port->port.closing_wait) || |
| ((newinfo.flags & ~ASYNC_USR_MASK) != |
| (port->port.flags & ~ASYNC_USR_MASK))) { |
| mutex_unlock(&port->port.mutex); |
| return -EPERM; |
| } |
| port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | |
| (newinfo.flags & ASYNC_USR_MASK)); |
| } else { |
| port->port.close_delay = newinfo.close_delay; |
| port->port.closing_wait = newinfo.closing_wait; |
| port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
| (newinfo.flags & ASYNC_FLAGS)); |
| } |
| if (reconfig_port) { |
| unsigned long flags; |
| spin_lock_irqsave(&port->card->card_lock, flags); |
| isicom_config_port(tty); |
| spin_unlock_irqrestore(&port->card->card_lock, flags); |
| } |
| mutex_unlock(&port->port.mutex); |
| return 0; |
| } |
| |
| static int isicom_get_serial_info(struct isi_port *port, |
| struct serial_struct __user *info) |
| { |
| struct serial_struct out_info; |
| |
| mutex_lock(&port->port.mutex); |
| memset(&out_info, 0, sizeof(out_info)); |
| /* out_info.type = ? */ |
| out_info.line = port - isi_ports; |
| out_info.port = port->card->base; |
| out_info.irq = port->card->irq; |
| out_info.flags = port->port.flags; |
| /* out_info.baud_base = ? */ |
| out_info.close_delay = port->port.close_delay; |
| out_info.closing_wait = port->port.closing_wait; |
| mutex_unlock(&port->port.mutex); |
| if (copy_to_user(info, &out_info, sizeof(out_info))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct isi_port *port = tty->driver_data; |
| void __user *argp = (void __user *)arg; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| return -ENODEV; |
| |
| switch (cmd) { |
| case TIOCGSERIAL: |
| return isicom_get_serial_info(port, argp); |
| |
| case TIOCSSERIAL: |
| return isicom_set_serial_info(tty, argp); |
| |
| default: |
| return -ENOIOCTLCMD; |
| } |
| return 0; |
| } |
| |
| /* set_termios et all */ |
| static void isicom_set_termios(struct tty_struct *tty, |
| struct ktermios *old_termios) |
| { |
| struct isi_port *port = tty->driver_data; |
| unsigned long flags; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
| return; |
| |
| if (tty->termios->c_cflag == old_termios->c_cflag && |
| tty->termios->c_iflag == old_termios->c_iflag) |
| return; |
| |
| spin_lock_irqsave(&port->card->card_lock, flags); |
| isicom_config_port(tty); |
| spin_unlock_irqrestore(&port->card->card_lock, flags); |
| |
| if ((old_termios->c_cflag & CRTSCTS) && |
| !(tty->termios->c_cflag & CRTSCTS)) { |
| tty->hw_stopped = 0; |
| isicom_start(tty); |
| } |
| } |
| |
| /* throttle et all */ |
| static void isicom_throttle(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
| return; |
| |
| /* tell the card that this port cannot handle any more data for now */ |
| card->port_status &= ~(1 << port->channel); |
| outw(card->port_status, card->base + 0x02); |
| } |
| |
| /* unthrottle et all */ |
| static void isicom_unthrottle(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| struct isi_board *card = port->card; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
| return; |
| |
| /* tell the card that this port is ready to accept more data */ |
| card->port_status |= (1 << port->channel); |
| outw(card->port_status, card->base + 0x02); |
| } |
| |
| /* stop et all */ |
| static void isicom_stop(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_stop")) |
| return; |
| |
| /* this tells the transmitter not to consider this port for |
| data output to the card. */ |
| port->status &= ~ISI_TXOK; |
| } |
| |
| /* start et all */ |
| static void isicom_start(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
| return; |
| |
| /* this tells the transmitter to consider this port for |
| data output to the card. */ |
| port->status |= ISI_TXOK; |
| } |
| |
| static void isicom_hangup(struct tty_struct *tty) |
| { |
| struct isi_port *port = tty->driver_data; |
| |
| if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
| return; |
| tty_port_hangup(&port->port); |
| } |
| |
| |
| /* |
| * Driver init and deinit functions |
| */ |
| |
| static const struct tty_operations isicom_ops = { |
| .open = isicom_open, |
| .close = isicom_close, |
| .write = isicom_write, |
| .put_char = isicom_put_char, |
| .flush_chars = isicom_flush_chars, |
| .write_room = isicom_write_room, |
| .chars_in_buffer = isicom_chars_in_buffer, |
| .ioctl = isicom_ioctl, |
| .set_termios = isicom_set_termios, |
| .throttle = isicom_throttle, |
| .unthrottle = isicom_unthrottle, |
| .stop = isicom_stop, |
| .start = isicom_start, |
| .hangup = isicom_hangup, |
| .flush_buffer = isicom_flush_buffer, |
| .tiocmget = isicom_tiocmget, |
| .tiocmset = isicom_tiocmset, |
| .break_ctl = isicom_send_break, |
| }; |
| |
| static const struct tty_port_operations isicom_port_ops = { |
| .carrier_raised = isicom_carrier_raised, |
| .dtr_rts = isicom_dtr_rts, |
| .activate = isicom_activate, |
| .shutdown = isicom_shutdown, |
| }; |
| |
| static int __devinit reset_card(struct pci_dev *pdev, |
| const unsigned int card, unsigned int *signature) |
| { |
| struct isi_board *board = pci_get_drvdata(pdev); |
| unsigned long base = board->base; |
| unsigned int sig, portcount = 0; |
| int retval = 0; |
| |
| dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
| base); |
| |
| inw(base + 0x8); |
| |
| msleep(10); |
| |
| outw(0, base + 0x8); /* Reset */ |
| |
| msleep(1000); |
| |
| sig = inw(base + 0x4) & 0xff; |
| |
| if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && |
| sig != 0xee) { |
| dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " |
| "bad I/O Port Address 0x%lx).\n", card + 1, base); |
| dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); |
| retval = -EIO; |
| goto end; |
| } |
| |
| msleep(10); |
| |
| portcount = inw(base + 0x2); |
| if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && |
| portcount != 8 && portcount != 16)) { |
| dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", |
| card + 1); |
| retval = -EIO; |
| goto end; |
| } |
| |
| switch (sig) { |
| case 0xa5: |
| case 0xbb: |
| case 0xdd: |
| board->port_count = (portcount == 4) ? 4 : 8; |
| board->shift_count = 12; |
| break; |
| case 0xcc: |
| case 0xee: |
| board->port_count = 16; |
| board->shift_count = 11; |
| break; |
| } |
| dev_info(&pdev->dev, "-Done\n"); |
| *signature = sig; |
| |
| end: |
| return retval; |
| } |
| |
| static int __devinit load_firmware(struct pci_dev *pdev, |
| const unsigned int index, const unsigned int signature) |
| { |
| struct isi_board *board = pci_get_drvdata(pdev); |
| const struct firmware *fw; |
| unsigned long base = board->base; |
| unsigned int a; |
| u16 word_count, status; |
| int retval = -EIO; |
| char *name; |
| u8 *data; |
| |
| struct stframe { |
| u16 addr; |
| u16 count; |
| u8 data[0]; |
| } *frame; |
| |
| switch (signature) { |
| case 0xa5: |
| name = "isi608.bin"; |
| break; |
| case 0xbb: |
| name = "isi608em.bin"; |
| break; |
| case 0xcc: |
| name = "isi616em.bin"; |
| break; |
| case 0xdd: |
| name = "isi4608.bin"; |
| break; |
| case 0xee: |
| name = "isi4616.bin"; |
| break; |
| default: |
| dev_err(&pdev->dev, "Unknown signature.\n"); |
| goto end; |
| } |
| |
| retval = request_firmware(&fw, name, &pdev->dev); |
| if (retval) |
| goto end; |
| |
| retval = -EIO; |
| |
| for (frame = (struct stframe *)fw->data; |
| frame < (struct stframe *)(fw->data + fw->size); |
| frame = (struct stframe *)((u8 *)(frame + 1) + |
| frame->count)) { |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| outw(0xf0, base); /* start upload sequence */ |
| outw(0x00, base); |
| outw(frame->addr, base); /* lsb of address */ |
| |
| word_count = frame->count / 2 + frame->count % 2; |
| outw(word_count, base); |
| InterruptTheCard(base); |
| |
| udelay(100); /* 0x2f */ |
| |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| status = inw(base + 0x4); |
| if (status != 0) { |
| dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
| "Address:0x%x\n" |
| "Count:0x%x\n" |
| "Status:0x%x\n", |
| index + 1, frame->addr, frame->count, status); |
| goto errrelfw; |
| } |
| outsw(base, frame->data, word_count); |
| |
| InterruptTheCard(base); |
| |
| udelay(50); /* 0x0f */ |
| |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| status = inw(base + 0x4); |
| if (status != 0) { |
| dev_err(&pdev->dev, "Card%d got out of sync.Card " |
| "Status:0x%x\n", index + 1, status); |
| goto errrelfw; |
| } |
| } |
| |
| /* XXX: should we test it by reading it back and comparing with original like |
| * in load firmware package? */ |
| for (frame = (struct stframe *)fw->data; |
| frame < (struct stframe *)(fw->data + fw->size); |
| frame = (struct stframe *)((u8 *)(frame + 1) + |
| frame->count)) { |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| outw(0xf1, base); /* start download sequence */ |
| outw(0x00, base); |
| outw(frame->addr, base); /* lsb of address */ |
| |
| word_count = (frame->count >> 1) + frame->count % 2; |
| outw(word_count + 1, base); |
| InterruptTheCard(base); |
| |
| udelay(50); /* 0xf */ |
| |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| status = inw(base + 0x4); |
| if (status != 0) { |
| dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
| "Address:0x%x\n" |
| "Count:0x%x\n" |
| "Status: 0x%x\n", |
| index + 1, frame->addr, frame->count, status); |
| goto errrelfw; |
| } |
| |
| data = kmalloc(word_count * 2, GFP_KERNEL); |
| if (data == NULL) { |
| dev_err(&pdev->dev, "Card%d, firmware upload " |
| "failed, not enough memory\n", index + 1); |
| goto errrelfw; |
| } |
| inw(base); |
| insw(base, data, word_count); |
| InterruptTheCard(base); |
| |
| for (a = 0; a < frame->count; a++) |
| if (data[a] != frame->data[a]) { |
| kfree(data); |
| dev_err(&pdev->dev, "Card%d, firmware upload " |
| "failed\n", index + 1); |
| goto errrelfw; |
| } |
| kfree(data); |
| |
| udelay(50); /* 0xf */ |
| |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| status = inw(base + 0x4); |
| if (status != 0) { |
| dev_err(&pdev->dev, "Card%d verify got out of sync. " |
| "Card Status:0x%x\n", index + 1, status); |
| goto errrelfw; |
| } |
| } |
| |
| /* xfer ctrl */ |
| if (WaitTillCardIsFree(base)) |
| goto errrelfw; |
| |
| outw(0xf2, base); |
| outw(0x800, base); |
| outw(0x0, base); |
| outw(0x0, base); |
| InterruptTheCard(base); |
| outw(0x0, base + 0x4); /* for ISI4608 cards */ |
| |
| board->status |= FIRMWARE_LOADED; |
| retval = 0; |
| |
| errrelfw: |
| release_firmware(fw); |
| end: |
| return retval; |
| } |
| |
| /* |
| * Insmod can set static symbols so keep these static |
| */ |
| static unsigned int card_count; |
| |
| static int __devinit isicom_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| unsigned int uninitialized_var(signature), index; |
| int retval = -EPERM; |
| struct isi_board *board = NULL; |
| |
| if (card_count >= BOARD_COUNT) |
| goto err; |
| |
| retval = pci_enable_device(pdev); |
| if (retval) { |
| dev_err(&pdev->dev, "failed to enable\n"); |
| goto err; |
| } |
| |
| dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
| |
| /* allot the first empty slot in the array */ |
| for (index = 0; index < BOARD_COUNT; index++) { |
| if (isi_card[index].base == 0) { |
| board = &isi_card[index]; |
| break; |
| } |
| } |
| if (index == BOARD_COUNT) { |
| retval = -ENODEV; |
| goto err_disable; |
| } |
| |
| board->index = index; |
| board->base = pci_resource_start(pdev, 3); |
| board->irq = pdev->irq; |
| card_count++; |
| |
| pci_set_drvdata(pdev, board); |
| |
| retval = pci_request_region(pdev, 3, ISICOM_NAME); |
| if (retval) { |
| dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
| "will be disabled.\n", board->base, board->base + 15, |
| index + 1); |
| retval = -EBUSY; |
| goto errdec; |
| } |
| |
| retval = request_irq(board->irq, isicom_interrupt, |
| IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); |
| if (retval < 0) { |
| dev_err(&pdev->dev, "Could not install handler at Irq %d. " |
| "Card%d will be disabled.\n", board->irq, index + 1); |
| goto errunrr; |
| } |
| |
| retval = reset_card(pdev, index, &signature); |
| if (retval < 0) |
| goto errunri; |
| |
| retval = load_firmware(pdev, index, signature); |
| if (retval < 0) |
| goto errunri; |
| |
| for (index = 0; index < board->port_count; index++) |
| tty_register_device(isicom_normal, board->index * 16 + index, |
| &pdev->dev); |
| |
| return 0; |
| |
| errunri: |
| free_irq(board->irq, board); |
| errunrr: |
| pci_release_region(pdev, 3); |
| errdec: |
| board->base = 0; |
| card_count--; |
| err_disable: |
| pci_disable_device(pdev); |
| err: |
| return retval; |
| } |
| |
| static void __devexit isicom_remove(struct pci_dev *pdev) |
| { |
| struct isi_board *board = pci_get_drvdata(pdev); |
| unsigned int i; |
| |
| for (i = 0; i < board->port_count; i++) |
| tty_unregister_device(isicom_normal, board->index * 16 + i); |
| |
| free_irq(board->irq, board); |
| pci_release_region(pdev, 3); |
| board->base = 0; |
| card_count--; |
| pci_disable_device(pdev); |
| } |
| |
| static int __init isicom_init(void) |
| { |
| int retval, idx, channel; |
| struct isi_port *port; |
| |
| for (idx = 0; idx < BOARD_COUNT; idx++) { |
| port = &isi_ports[idx * 16]; |
| isi_card[idx].ports = port; |
| spin_lock_init(&isi_card[idx].card_lock); |
| for (channel = 0; channel < 16; channel++, port++) { |
| tty_port_init(&port->port); |
| port->port.ops = &isicom_port_ops; |
| port->magic = ISICOM_MAGIC; |
| port->card = &isi_card[idx]; |
| port->channel = channel; |
| port->port.close_delay = 50 * HZ/100; |
| port->port.closing_wait = 3000 * HZ/100; |
| port->status = 0; |
| /* . . . */ |
| } |
| isi_card[idx].base = 0; |
| isi_card[idx].irq = 0; |
| } |
| |
| /* tty driver structure initialization */ |
| isicom_normal = alloc_tty_driver(PORT_COUNT); |
| if (!isicom_normal) { |
| retval = -ENOMEM; |
| goto error; |
| } |
| |
| isicom_normal->owner = THIS_MODULE; |
| isicom_normal->name = "ttyM"; |
| isicom_normal->major = ISICOM_NMAJOR; |
| isicom_normal->minor_start = 0; |
| isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; |
| isicom_normal->subtype = SERIAL_TYPE_NORMAL; |
| isicom_normal->init_termios = tty_std_termios; |
| isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| CLOCAL; |
| isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
| TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; |
| tty_set_operations(isicom_normal, &isicom_ops); |
| |
| retval = tty_register_driver(isicom_normal); |
| if (retval) { |
| pr_debug("Couldn't register the dialin driver\n"); |
| goto err_puttty; |
| } |
| |
| retval = pci_register_driver(&isicom_driver); |
| if (retval < 0) { |
| pr_err("Unable to register pci driver.\n"); |
| goto err_unrtty; |
| } |
| |
| mod_timer(&tx, jiffies + 1); |
| |
| return 0; |
| err_unrtty: |
| tty_unregister_driver(isicom_normal); |
| err_puttty: |
| put_tty_driver(isicom_normal); |
| error: |
| return retval; |
| } |
| |
| static void __exit isicom_exit(void) |
| { |
| del_timer_sync(&tx); |
| |
| pci_unregister_driver(&isicom_driver); |
| tty_unregister_driver(isicom_normal); |
| put_tty_driver(isicom_normal); |
| } |
| |
| module_init(isicom_init); |
| module_exit(isicom_exit); |
| |
| MODULE_AUTHOR("MultiTech"); |
| MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); |
| MODULE_LICENSE("GPL"); |
| MODULE_FIRMWARE("isi608.bin"); |
| MODULE_FIRMWARE("isi608em.bin"); |
| MODULE_FIRMWARE("isi616em.bin"); |
| MODULE_FIRMWARE("isi4608.bin"); |
| MODULE_FIRMWARE("isi4616.bin"); |