![Bhumika Goyal](/assets/img/avatar_default.png)
Declare uart_ops structures as const as they are only stored in the ops field of an uart_port structure. This field is of type const, so uart_ops structures having this property can be made const too. File size details before and after patching. First line of every .o file shows the file size before patching and second line shows the size after patching. text data bss dec hex filename 2977 456 64 3497 da9 drivers/tty/serial/amba-pl010.o 3169 272 64 3505 db1 drivers/tty/serial/amba-pl010.o 3109 456 0 3565 ded drivers/tty/serial/efm32-uart.o 3301 272 0 3573 df5 drivers/tty/serial/efm32-uart.o 10668 753 1 11422 2c9e drivers/tty/serial/icom.o 10860 561 1 11422 2c9e drivers/tty/serial/icom.o 23904 408 8 24320 5f00 drivers/tty/serial/ioc3_serial.o 24088 224 8 24320 5f00 drivers/tty/serial/ioc3_serial.o 10516 560 4 11080 2b48 drivers/tty/serial/ioc4_serial.o 10709 368 4 11081 2b49 drivers/tty/serial/ioc4_serial.o 7853 648 1216 9717 25f5 drivers/tty/serial/mpsc.o 8037 456 1216 9709 25ed drivers/tty/serial/mpsc.o 10248 456 0 10704 29d0 drivers/tty/serial/omap-serial.o 10440 272 0 10712 29d8 drivers/tty/serial/omap-serial.o 8122 532 1984 10638 298e drivers/tty/serial/pmac_zilog.o 8306 340 1984 10630 2986 drivers/tty/serial/pmac_zilog.o 3808 456 0 4264 10a8 drivers/tty/serial/pxa.o 4000 264 0 4264 10a8 drivers/tty/serial/pxa.o 21781 3864 0 25645 642d drivers/tty/serial/serial-tegra.o 22037 3608 0 25645 642d drivers/tty/serial/serial-tegra.o 2481 456 96 3033 bd9 drivers/tty/serial/sprd_serial.o 2673 272 96 3041 be1 drivers/tty/serial/sprd_serial.o 5534 300 512 6346 18ca drivers/tty/serial/vr41xx_siu.o 5630 204 512 6346 18ca drivers/tty/serial/vr41xx_siu.o 6730 1576 128 8434 20f2 drivers/tty/serial/vt8500_serial.o 6986 1320 128 8434 20f2 drivers/tty/serial/vt8500_serial.o Cross compiled for mips architecture. 3005 488 0 3493 da5 drivers/tty/serial/pnx8xxx_uart.o 3189 304 0 3493 da5 drivers/tty/serial/pnx8xxx_uart.o 4272 196 1056 5524 1594 drivers/tty/serial/dz.o 4368 100 1056 5524 1594 drivers/tty/serial/dz.o 6551 144 16 6711 1a37 drivers/tty/serial/ip22zilog.o 6647 48 16 6711 1a37 drivers/tty/serial/ip22zilog.o 9612 428 1520 11560 2d28 drivers/tty/serial/serial_txx9.o 9708 332 1520 11560 2d28 drivers/tty/serial/serial_txx9.o 4156 296 16 4468 1174 drivers/tty/serial/ar933x_uart.o 4252 200 16 4468 1174 drivers/tty/serial/ar933x_uart.o Cross compiled for arm archiecture. 11716 1780 44 13540 34e4 drivers/tty/serial/sirfsoc_uart.o 11808 1688 44 13540 34e4 drivers/tty/serial/sirfsoc_uart.o 13352 596 56 14004 36b4 drivers/tty/serial/amba-pl011.o 13444 504 56 14004 36b4 drivers/tty/serial/amba-pl011.o Cross compiled for sparc architecture. 4664 528 32 5224 1468 drivers/tty/serial/sunhv.o 4848 344 32 5224 1468 drivers/tty/serial/sunhv.o 8080 332 28 8440 20f8 drivers/tty/serial/sunzilog.o 8184 228 28 8440 20f8 drivers/tty/serial/sunzilog.o Cross compiled for ia64 architecture. 10226 549 472 11247 2bef drivers/tty/serial/sn_console.o 10414 365 472 11251 2bf3 drivers/tty/serial/sn_console.o The files drivers/tty/serial/zs.o, drivers/tty/serial/lpc32xx_hs.o and drivers/tty/serial/lantiq.o did not compile. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1662 lines
43 KiB
C
1662 lines
43 KiB
C
/*
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* icom.c
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*
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* Copyright (C) 2001 IBM Corporation. All rights reserved.
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*
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* Serial device driver.
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*
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* Based on code from serial.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/signal.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/termios.h>
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#include <linux/fs.h>
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#include <linux/tty_flip.h>
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#include <linux/serial.h>
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#include <linux/serial_reg.h>
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#include <linux/major.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <linux/smp.h>
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#include <linux/spinlock.h>
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#include <linux/kref.h>
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#include <linux/firmware.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/uaccess.h>
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#include "icom.h"
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/*#define ICOM_TRACE enable port trace capabilities */
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#define ICOM_DRIVER_NAME "icom"
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#define ICOM_VERSION_STR "1.3.1"
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#define NR_PORTS 128
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#define ICOM_PORT ((struct icom_port *)port)
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#define to_icom_adapter(d) container_of(d, struct icom_adapter, kref)
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static const struct pci_device_id icom_pci_table[] = {
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{
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.vendor = PCI_VENDOR_ID_IBM,
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.device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_1,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = ADAPTER_V1,
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},
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{
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.vendor = PCI_VENDOR_ID_IBM,
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.device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
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.subvendor = PCI_VENDOR_ID_IBM,
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.subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_TWO_PORTS_RVX,
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.driver_data = ADAPTER_V2,
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},
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{
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.vendor = PCI_VENDOR_ID_IBM,
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.device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
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.subvendor = PCI_VENDOR_ID_IBM,
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.subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM,
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.driver_data = ADAPTER_V2,
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},
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{
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.vendor = PCI_VENDOR_ID_IBM,
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.device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
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.subvendor = PCI_VENDOR_ID_IBM,
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.subdevice = PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL,
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.driver_data = ADAPTER_V2,
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},
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{
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.vendor = PCI_VENDOR_ID_IBM,
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.device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
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.subvendor = PCI_VENDOR_ID_IBM,
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.subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM_PCIE,
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.driver_data = ADAPTER_V2,
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},
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{}
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};
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static struct lookup_proc_table start_proc[4] = {
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{NULL, ICOM_CONTROL_START_A},
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{NULL, ICOM_CONTROL_START_B},
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{NULL, ICOM_CONTROL_START_C},
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{NULL, ICOM_CONTROL_START_D}
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};
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static struct lookup_proc_table stop_proc[4] = {
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{NULL, ICOM_CONTROL_STOP_A},
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{NULL, ICOM_CONTROL_STOP_B},
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{NULL, ICOM_CONTROL_STOP_C},
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{NULL, ICOM_CONTROL_STOP_D}
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};
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static struct lookup_int_table int_mask_tbl[4] = {
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{NULL, ICOM_INT_MASK_PRC_A},
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{NULL, ICOM_INT_MASK_PRC_B},
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{NULL, ICOM_INT_MASK_PRC_C},
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{NULL, ICOM_INT_MASK_PRC_D},
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};
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MODULE_DEVICE_TABLE(pci, icom_pci_table);
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static LIST_HEAD(icom_adapter_head);
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/* spinlock for adapter initialization and changing adapter operations */
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static spinlock_t icom_lock;
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#ifdef ICOM_TRACE
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static inline void trace(struct icom_port *icom_port, char *trace_pt,
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unsigned long trace_data)
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{
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dev_info(&icom_port->adapter->pci_dev->dev, ":%d:%s - %lx\n",
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icom_port->port, trace_pt, trace_data);
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}
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#else
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static inline void trace(struct icom_port *icom_port, char *trace_pt, unsigned long trace_data) {};
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#endif
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static void icom_kref_release(struct kref *kref);
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static void free_port_memory(struct icom_port *icom_port)
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{
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struct pci_dev *dev = icom_port->adapter->pci_dev;
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trace(icom_port, "RET_PORT_MEM", 0);
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if (icom_port->recv_buf) {
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pci_free_consistent(dev, 4096, icom_port->recv_buf,
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icom_port->recv_buf_pci);
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icom_port->recv_buf = NULL;
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}
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if (icom_port->xmit_buf) {
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pci_free_consistent(dev, 4096, icom_port->xmit_buf,
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icom_port->xmit_buf_pci);
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icom_port->xmit_buf = NULL;
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}
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if (icom_port->statStg) {
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pci_free_consistent(dev, 4096, icom_port->statStg,
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icom_port->statStg_pci);
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icom_port->statStg = NULL;
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}
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if (icom_port->xmitRestart) {
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pci_free_consistent(dev, 4096, icom_port->xmitRestart,
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icom_port->xmitRestart_pci);
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icom_port->xmitRestart = NULL;
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}
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}
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static int get_port_memory(struct icom_port *icom_port)
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{
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int index;
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unsigned long stgAddr;
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unsigned long startStgAddr;
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unsigned long offset;
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struct pci_dev *dev = icom_port->adapter->pci_dev;
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icom_port->xmit_buf =
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pci_alloc_consistent(dev, 4096, &icom_port->xmit_buf_pci);
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if (!icom_port->xmit_buf) {
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dev_err(&dev->dev, "Can not allocate Transmit buffer\n");
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return -ENOMEM;
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}
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trace(icom_port, "GET_PORT_MEM",
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(unsigned long) icom_port->xmit_buf);
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icom_port->recv_buf =
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pci_alloc_consistent(dev, 4096, &icom_port->recv_buf_pci);
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if (!icom_port->recv_buf) {
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dev_err(&dev->dev, "Can not allocate Receive buffer\n");
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free_port_memory(icom_port);
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return -ENOMEM;
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}
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trace(icom_port, "GET_PORT_MEM",
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(unsigned long) icom_port->recv_buf);
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icom_port->statStg =
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pci_alloc_consistent(dev, 4096, &icom_port->statStg_pci);
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if (!icom_port->statStg) {
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dev_err(&dev->dev, "Can not allocate Status buffer\n");
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free_port_memory(icom_port);
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return -ENOMEM;
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}
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trace(icom_port, "GET_PORT_MEM",
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(unsigned long) icom_port->statStg);
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icom_port->xmitRestart =
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pci_alloc_consistent(dev, 4096, &icom_port->xmitRestart_pci);
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if (!icom_port->xmitRestart) {
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dev_err(&dev->dev,
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"Can not allocate xmit Restart buffer\n");
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free_port_memory(icom_port);
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return -ENOMEM;
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}
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memset(icom_port->statStg, 0, 4096);
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/* FODs: Frame Out Descriptor Queue, this is a FIFO queue that
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indicates that frames are to be transmitted
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*/
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stgAddr = (unsigned long) icom_port->statStg;
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for (index = 0; index < NUM_XBUFFS; index++) {
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trace(icom_port, "FOD_ADDR", stgAddr);
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stgAddr = stgAddr + sizeof(icom_port->statStg->xmit[0]);
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if (index < (NUM_XBUFFS - 1)) {
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memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
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icom_port->statStg->xmit[index].leLengthASD =
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(unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
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trace(icom_port, "FOD_ADDR", stgAddr);
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trace(icom_port, "FOD_XBUFF",
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(unsigned long) icom_port->xmit_buf);
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icom_port->statStg->xmit[index].leBuffer =
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cpu_to_le32(icom_port->xmit_buf_pci);
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} else if (index == (NUM_XBUFFS - 1)) {
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memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
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icom_port->statStg->xmit[index].leLengthASD =
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(unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
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trace(icom_port, "FOD_XBUFF",
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(unsigned long) icom_port->xmit_buf);
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icom_port->statStg->xmit[index].leBuffer =
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cpu_to_le32(icom_port->xmit_buf_pci);
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} else {
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memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
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}
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}
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/* FIDs */
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startStgAddr = stgAddr;
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/* fill in every entry, even if no buffer */
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for (index = 0; index < NUM_RBUFFS; index++) {
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trace(icom_port, "FID_ADDR", stgAddr);
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stgAddr = stgAddr + sizeof(icom_port->statStg->rcv[0]);
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icom_port->statStg->rcv[index].leLength = 0;
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icom_port->statStg->rcv[index].WorkingLength =
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(unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
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if (index < (NUM_RBUFFS - 1) ) {
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offset = stgAddr - (unsigned long) icom_port->statStg;
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icom_port->statStg->rcv[index].leNext =
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cpu_to_le32(icom_port-> statStg_pci + offset);
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trace(icom_port, "FID_RBUFF",
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(unsigned long) icom_port->recv_buf);
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icom_port->statStg->rcv[index].leBuffer =
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cpu_to_le32(icom_port->recv_buf_pci);
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} else if (index == (NUM_RBUFFS -1) ) {
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offset = startStgAddr - (unsigned long) icom_port->statStg;
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icom_port->statStg->rcv[index].leNext =
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cpu_to_le32(icom_port-> statStg_pci + offset);
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trace(icom_port, "FID_RBUFF",
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(unsigned long) icom_port->recv_buf + 2048);
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icom_port->statStg->rcv[index].leBuffer =
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cpu_to_le32(icom_port->recv_buf_pci + 2048);
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} else {
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icom_port->statStg->rcv[index].leNext = 0;
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icom_port->statStg->rcv[index].leBuffer = 0;
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}
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}
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return 0;
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}
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static void stop_processor(struct icom_port *icom_port)
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{
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unsigned long temp;
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unsigned long flags;
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int port;
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spin_lock_irqsave(&icom_lock, flags);
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port = icom_port->port;
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if (port >= ARRAY_SIZE(stop_proc)) {
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dev_err(&icom_port->adapter->pci_dev->dev,
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"Invalid port assignment\n");
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goto unlock;
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}
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if (port == 0 || port == 1)
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stop_proc[port].global_control_reg = &icom_port->global_reg->control;
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else
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stop_proc[port].global_control_reg = &icom_port->global_reg->control_2;
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temp = readl(stop_proc[port].global_control_reg);
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temp = (temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
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writel(temp, stop_proc[port].global_control_reg);
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/* write flush */
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readl(stop_proc[port].global_control_reg);
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unlock:
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spin_unlock_irqrestore(&icom_lock, flags);
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}
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static void start_processor(struct icom_port *icom_port)
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{
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unsigned long temp;
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unsigned long flags;
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int port;
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spin_lock_irqsave(&icom_lock, flags);
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port = icom_port->port;
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if (port >= ARRAY_SIZE(start_proc)) {
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dev_err(&icom_port->adapter->pci_dev->dev,
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"Invalid port assignment\n");
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goto unlock;
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}
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if (port == 0 || port == 1)
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start_proc[port].global_control_reg = &icom_port->global_reg->control;
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else
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start_proc[port].global_control_reg = &icom_port->global_reg->control_2;
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temp = readl(start_proc[port].global_control_reg);
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temp = (temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
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writel(temp, start_proc[port].global_control_reg);
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/* write flush */
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readl(start_proc[port].global_control_reg);
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unlock:
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spin_unlock_irqrestore(&icom_lock, flags);
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}
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static void load_code(struct icom_port *icom_port)
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{
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const struct firmware *fw;
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char __iomem *iram_ptr;
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int index;
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int status = 0;
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void __iomem *dram_ptr = icom_port->dram;
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dma_addr_t temp_pci;
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unsigned char *new_page = NULL;
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unsigned char cable_id = NO_CABLE;
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struct pci_dev *dev = icom_port->adapter->pci_dev;
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/* Clear out any pending interrupts */
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writew(0x3FFF, icom_port->int_reg);
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trace(icom_port, "CLEAR_INTERRUPTS", 0);
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/* Stop processor */
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stop_processor(icom_port);
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/* Zero out DRAM */
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memset_io(dram_ptr, 0, 512);
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/* Load Call Setup into Adapter */
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if (request_firmware(&fw, "icom_call_setup.bin", &dev->dev) < 0) {
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dev_err(&dev->dev,"Unable to load icom_call_setup.bin firmware image\n");
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status = -1;
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goto load_code_exit;
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}
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if (fw->size > ICOM_DCE_IRAM_OFFSET) {
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dev_err(&dev->dev, "Invalid firmware image for icom_call_setup.bin found.\n");
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release_firmware(fw);
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status = -1;
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goto load_code_exit;
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}
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iram_ptr = (char __iomem *)icom_port->dram + ICOM_IRAM_OFFSET;
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for (index = 0; index < fw->size; index++)
|
|
writeb(fw->data[index], &iram_ptr[index]);
|
|
|
|
release_firmware(fw);
|
|
|
|
/* Load Resident DCE portion of Adapter */
|
|
if (request_firmware(&fw, "icom_res_dce.bin", &dev->dev) < 0) {
|
|
dev_err(&dev->dev,"Unable to load icom_res_dce.bin firmware image\n");
|
|
status = -1;
|
|
goto load_code_exit;
|
|
}
|
|
|
|
if (fw->size > ICOM_IRAM_SIZE) {
|
|
dev_err(&dev->dev, "Invalid firmware image for icom_res_dce.bin found.\n");
|
|
release_firmware(fw);
|
|
status = -1;
|
|
goto load_code_exit;
|
|
}
|
|
|
|
iram_ptr = (char __iomem *) icom_port->dram + ICOM_IRAM_OFFSET;
|
|
for (index = ICOM_DCE_IRAM_OFFSET; index < fw->size; index++)
|
|
writeb(fw->data[index], &iram_ptr[index]);
|
|
|
|
release_firmware(fw);
|
|
|
|
/* Set Hardware level */
|
|
if (icom_port->adapter->version == ADAPTER_V2)
|
|
writeb(V2_HARDWARE, &(icom_port->dram->misc_flags));
|
|
|
|
/* Start the processor in Adapter */
|
|
start_processor(icom_port);
|
|
|
|
writeb((HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL),
|
|
&(icom_port->dram->HDLCConfigReg));
|
|
writeb(0x04, &(icom_port->dram->FlagFillIdleTimer)); /* 0.5 seconds */
|
|
writeb(0x00, &(icom_port->dram->CmdReg));
|
|
writeb(0x10, &(icom_port->dram->async_config3));
|
|
writeb((ICOM_ACFG_DRIVE1 | ICOM_ACFG_NO_PARITY | ICOM_ACFG_8BPC |
|
|
ICOM_ACFG_1STOP_BIT), &(icom_port->dram->async_config2));
|
|
|
|
/*Set up data in icom DRAM to indicate where personality
|
|
*code is located and its length.
|
|
*/
|
|
new_page = pci_alloc_consistent(dev, 4096, &temp_pci);
|
|
|
|
if (!new_page) {
|
|
dev_err(&dev->dev, "Can not allocate DMA buffer\n");
|
|
status = -1;
|
|
goto load_code_exit;
|
|
}
|
|
|
|
if (request_firmware(&fw, "icom_asc.bin", &dev->dev) < 0) {
|
|
dev_err(&dev->dev,"Unable to load icom_asc.bin firmware image\n");
|
|
status = -1;
|
|
goto load_code_exit;
|
|
}
|
|
|
|
if (fw->size > ICOM_DCE_IRAM_OFFSET) {
|
|
dev_err(&dev->dev, "Invalid firmware image for icom_asc.bin found.\n");
|
|
release_firmware(fw);
|
|
status = -1;
|
|
goto load_code_exit;
|
|
}
|
|
|
|
for (index = 0; index < fw->size; index++)
|
|
new_page[index] = fw->data[index];
|
|
|
|
writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
|
|
writel(temp_pci, &icom_port->dram->mac_load_addr);
|
|
|
|
release_firmware(fw);
|
|
|
|
/*Setting the syncReg to 0x80 causes adapter to start downloading
|
|
the personality code into adapter instruction RAM.
|
|
Once code is loaded, it will begin executing and, based on
|
|
information provided above, will start DMAing data from
|
|
shared memory to adapter DRAM.
|
|
*/
|
|
/* the wait loop below verifies this write operation has been done
|
|
and processed
|
|
*/
|
|
writeb(START_DOWNLOAD, &icom_port->dram->sync);
|
|
|
|
/* Wait max 1 Sec for data download and processor to start */
|
|
for (index = 0; index < 10; index++) {
|
|
msleep(100);
|
|
if (readb(&icom_port->dram->misc_flags) & ICOM_HDW_ACTIVE)
|
|
break;
|
|
}
|
|
|
|
if (index == 10)
|
|
status = -1;
|
|
|
|
/*
|
|
* check Cable ID
|
|
*/
|
|
cable_id = readb(&icom_port->dram->cable_id);
|
|
|
|
if (cable_id & ICOM_CABLE_ID_VALID) {
|
|
/* Get cable ID into the lower 4 bits (standard form) */
|
|
cable_id = (cable_id & ICOM_CABLE_ID_MASK) >> 4;
|
|
icom_port->cable_id = cable_id;
|
|
} else {
|
|
dev_err(&dev->dev,"Invalid or no cable attached\n");
|
|
icom_port->cable_id = NO_CABLE;
|
|
}
|
|
|
|
load_code_exit:
|
|
|
|
if (status != 0) {
|
|
/* Clear out any pending interrupts */
|
|
writew(0x3FFF, icom_port->int_reg);
|
|
|
|
/* Turn off port */
|
|
writeb(ICOM_DISABLE, &(icom_port->dram->disable));
|
|
|
|
/* Stop processor */
|
|
stop_processor(icom_port);
|
|
|
|
dev_err(&icom_port->adapter->pci_dev->dev,"Port not operational\n");
|
|
}
|
|
|
|
if (new_page != NULL)
|
|
pci_free_consistent(dev, 4096, new_page, temp_pci);
|
|
}
|
|
|
|
static int startup(struct icom_port *icom_port)
|
|
{
|
|
unsigned long temp;
|
|
unsigned char cable_id, raw_cable_id;
|
|
unsigned long flags;
|
|
int port;
|
|
|
|
trace(icom_port, "STARTUP", 0);
|
|
|
|
if (!icom_port->dram) {
|
|
/* should NEVER be NULL */
|
|
dev_err(&icom_port->adapter->pci_dev->dev,
|
|
"Unusable Port, port configuration missing\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* check Cable ID
|
|
*/
|
|
raw_cable_id = readb(&icom_port->dram->cable_id);
|
|
trace(icom_port, "CABLE_ID", raw_cable_id);
|
|
|
|
/* Get cable ID into the lower 4 bits (standard form) */
|
|
cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
|
|
|
|
/* Check for valid Cable ID */
|
|
if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
|
|
(cable_id != icom_port->cable_id)) {
|
|
|
|
/* reload adapter code, pick up any potential changes in cable id */
|
|
load_code(icom_port);
|
|
|
|
/* still no sign of cable, error out */
|
|
raw_cable_id = readb(&icom_port->dram->cable_id);
|
|
cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
|
|
if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
|
|
(icom_port->cable_id == NO_CABLE))
|
|
return -EIO;
|
|
}
|
|
|
|
/*
|
|
* Finally, clear and enable interrupts
|
|
*/
|
|
spin_lock_irqsave(&icom_lock, flags);
|
|
port = icom_port->port;
|
|
if (port >= ARRAY_SIZE(int_mask_tbl)) {
|
|
dev_err(&icom_port->adapter->pci_dev->dev,
|
|
"Invalid port assignment\n");
|
|
goto unlock;
|
|
}
|
|
|
|
if (port == 0 || port == 1)
|
|
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
|
|
else
|
|
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
|
|
|
|
if (port == 0 || port == 2)
|
|
writew(0x00FF, icom_port->int_reg);
|
|
else
|
|
writew(0x3F00, icom_port->int_reg);
|
|
|
|
temp = readl(int_mask_tbl[port].global_int_mask);
|
|
writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
|
|
|
/* write flush */
|
|
readl(int_mask_tbl[port].global_int_mask);
|
|
|
|
unlock:
|
|
spin_unlock_irqrestore(&icom_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static void shutdown(struct icom_port *icom_port)
|
|
{
|
|
unsigned long temp;
|
|
unsigned char cmdReg;
|
|
unsigned long flags;
|
|
int port;
|
|
|
|
spin_lock_irqsave(&icom_lock, flags);
|
|
trace(icom_port, "SHUTDOWN", 0);
|
|
|
|
/*
|
|
* disable all interrupts
|
|
*/
|
|
port = icom_port->port;
|
|
if (port >= ARRAY_SIZE(int_mask_tbl)) {
|
|
dev_err(&icom_port->adapter->pci_dev->dev,
|
|
"Invalid port assignment\n");
|
|
goto unlock;
|
|
}
|
|
if (port == 0 || port == 1)
|
|
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
|
|
else
|
|
int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
|
|
|
|
temp = readl(int_mask_tbl[port].global_int_mask);
|
|
writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
|
|
|
|
/* write flush */
|
|
readl(int_mask_tbl[port].global_int_mask);
|
|
|
|
unlock:
|
|
spin_unlock_irqrestore(&icom_lock, flags);
|
|
|
|
/*
|
|
* disable break condition
|
|
*/
|
|
cmdReg = readb(&icom_port->dram->CmdReg);
|
|
if (cmdReg & CMD_SND_BREAK) {
|
|
writeb(cmdReg & ~CMD_SND_BREAK, &icom_port->dram->CmdReg);
|
|
}
|
|
}
|
|
|
|
static int icom_write(struct uart_port *port)
|
|
{
|
|
unsigned long data_count;
|
|
unsigned char cmdReg;
|
|
unsigned long offset;
|
|
int temp_tail = port->state->xmit.tail;
|
|
|
|
trace(ICOM_PORT, "WRITE", 0);
|
|
|
|
if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
|
|
SA_FLAGS_READY_TO_XMIT) {
|
|
trace(ICOM_PORT, "WRITE_FULL", 0);
|
|
return 0;
|
|
}
|
|
|
|
data_count = 0;
|
|
while ((port->state->xmit.head != temp_tail) &&
|
|
(data_count <= XMIT_BUFF_SZ)) {
|
|
|
|
ICOM_PORT->xmit_buf[data_count++] =
|
|
port->state->xmit.buf[temp_tail];
|
|
|
|
temp_tail++;
|
|
temp_tail &= (UART_XMIT_SIZE - 1);
|
|
}
|
|
|
|
if (data_count) {
|
|
ICOM_PORT->statStg->xmit[0].flags =
|
|
cpu_to_le16(SA_FLAGS_READY_TO_XMIT);
|
|
ICOM_PORT->statStg->xmit[0].leLength =
|
|
cpu_to_le16(data_count);
|
|
offset =
|
|
(unsigned long) &ICOM_PORT->statStg->xmit[0] -
|
|
(unsigned long) ICOM_PORT->statStg;
|
|
*ICOM_PORT->xmitRestart =
|
|
cpu_to_le32(ICOM_PORT->statStg_pci + offset);
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
writeb(cmdReg | CMD_XMIT_RCV_ENABLE,
|
|
&ICOM_PORT->dram->CmdReg);
|
|
writeb(START_XMIT, &ICOM_PORT->dram->StartXmitCmd);
|
|
trace(ICOM_PORT, "WRITE_START", data_count);
|
|
/* write flush */
|
|
readb(&ICOM_PORT->dram->StartXmitCmd);
|
|
}
|
|
|
|
return data_count;
|
|
}
|
|
|
|
static inline void check_modem_status(struct icom_port *icom_port)
|
|
{
|
|
static char old_status = 0;
|
|
char delta_status;
|
|
unsigned char status;
|
|
|
|
spin_lock(&icom_port->uart_port.lock);
|
|
|
|
/*modem input register */
|
|
status = readb(&icom_port->dram->isr);
|
|
trace(icom_port, "CHECK_MODEM", status);
|
|
delta_status = status ^ old_status;
|
|
if (delta_status) {
|
|
if (delta_status & ICOM_RI)
|
|
icom_port->uart_port.icount.rng++;
|
|
if (delta_status & ICOM_DSR)
|
|
icom_port->uart_port.icount.dsr++;
|
|
if (delta_status & ICOM_DCD)
|
|
uart_handle_dcd_change(&icom_port->uart_port,
|
|
delta_status & ICOM_DCD);
|
|
if (delta_status & ICOM_CTS)
|
|
uart_handle_cts_change(&icom_port->uart_port,
|
|
delta_status & ICOM_CTS);
|
|
|
|
wake_up_interruptible(&icom_port->uart_port.state->
|
|
port.delta_msr_wait);
|
|
old_status = status;
|
|
}
|
|
spin_unlock(&icom_port->uart_port.lock);
|
|
}
|
|
|
|
static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port)
|
|
{
|
|
unsigned short int count;
|
|
int i;
|
|
|
|
if (port_int_reg & (INT_XMIT_COMPLETED)) {
|
|
trace(icom_port, "XMIT_COMPLETE", 0);
|
|
|
|
/* clear buffer in use bit */
|
|
icom_port->statStg->xmit[0].flags &=
|
|
cpu_to_le16(~SA_FLAGS_READY_TO_XMIT);
|
|
|
|
count = (unsigned short int)
|
|
cpu_to_le16(icom_port->statStg->xmit[0].leLength);
|
|
icom_port->uart_port.icount.tx += count;
|
|
|
|
for (i=0; i<count &&
|
|
!uart_circ_empty(&icom_port->uart_port.state->xmit); i++) {
|
|
|
|
icom_port->uart_port.state->xmit.tail++;
|
|
icom_port->uart_port.state->xmit.tail &=
|
|
(UART_XMIT_SIZE - 1);
|
|
}
|
|
|
|
if (!icom_write(&icom_port->uart_port))
|
|
/* activate write queue */
|
|
uart_write_wakeup(&icom_port->uart_port);
|
|
} else
|
|
trace(icom_port, "XMIT_DISABLED", 0);
|
|
}
|
|
|
|
static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
|
|
{
|
|
short int count, rcv_buff;
|
|
struct tty_port *port = &icom_port->uart_port.state->port;
|
|
unsigned short int status;
|
|
struct uart_icount *icount;
|
|
unsigned long offset;
|
|
unsigned char flag;
|
|
|
|
trace(icom_port, "RCV_COMPLETE", 0);
|
|
rcv_buff = icom_port->next_rcv;
|
|
|
|
status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
|
|
while (status & SA_FL_RCV_DONE) {
|
|
int first = -1;
|
|
|
|
trace(icom_port, "FID_STATUS", status);
|
|
count = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].leLength);
|
|
|
|
trace(icom_port, "RCV_COUNT", count);
|
|
|
|
trace(icom_port, "REAL_COUNT", count);
|
|
|
|
offset =
|
|
cpu_to_le32(icom_port->statStg->rcv[rcv_buff].leBuffer) -
|
|
icom_port->recv_buf_pci;
|
|
|
|
/* Block copy all but the last byte as this may have status */
|
|
if (count > 0) {
|
|
first = icom_port->recv_buf[offset];
|
|
tty_insert_flip_string(port, icom_port->recv_buf + offset, count - 1);
|
|
}
|
|
|
|
icount = &icom_port->uart_port.icount;
|
|
icount->rx += count;
|
|
|
|
/* Break detect logic */
|
|
if ((status & SA_FLAGS_FRAME_ERROR)
|
|
&& first == 0) {
|
|
status &= ~SA_FLAGS_FRAME_ERROR;
|
|
status |= SA_FLAGS_BREAK_DET;
|
|
trace(icom_port, "BREAK_DET", 0);
|
|
}
|
|
|
|
flag = TTY_NORMAL;
|
|
|
|
if (status &
|
|
(SA_FLAGS_BREAK_DET | SA_FLAGS_PARITY_ERROR |
|
|
SA_FLAGS_FRAME_ERROR | SA_FLAGS_OVERRUN)) {
|
|
|
|
if (status & SA_FLAGS_BREAK_DET)
|
|
icount->brk++;
|
|
if (status & SA_FLAGS_PARITY_ERROR)
|
|
icount->parity++;
|
|
if (status & SA_FLAGS_FRAME_ERROR)
|
|
icount->frame++;
|
|
if (status & SA_FLAGS_OVERRUN)
|
|
icount->overrun++;
|
|
|
|
/*
|
|
* Now check to see if character should be
|
|
* ignored, and mask off conditions which
|
|
* should be ignored.
|
|
*/
|
|
if (status & icom_port->ignore_status_mask) {
|
|
trace(icom_port, "IGNORE_CHAR", 0);
|
|
goto ignore_char;
|
|
}
|
|
|
|
status &= icom_port->read_status_mask;
|
|
|
|
if (status & SA_FLAGS_BREAK_DET) {
|
|
flag = TTY_BREAK;
|
|
} else if (status & SA_FLAGS_PARITY_ERROR) {
|
|
trace(icom_port, "PARITY_ERROR", 0);
|
|
flag = TTY_PARITY;
|
|
} else if (status & SA_FLAGS_FRAME_ERROR)
|
|
flag = TTY_FRAME;
|
|
|
|
}
|
|
|
|
tty_insert_flip_char(port, *(icom_port->recv_buf + offset + count - 1), flag);
|
|
|
|
if (status & SA_FLAGS_OVERRUN)
|
|
/*
|
|
* Overrun is special, since it's
|
|
* reported immediately, and doesn't
|
|
* affect the current character
|
|
*/
|
|
tty_insert_flip_char(port, 0, TTY_OVERRUN);
|
|
ignore_char:
|
|
icom_port->statStg->rcv[rcv_buff].flags = 0;
|
|
icom_port->statStg->rcv[rcv_buff].leLength = 0;
|
|
icom_port->statStg->rcv[rcv_buff].WorkingLength =
|
|
(unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
|
|
|
|
rcv_buff++;
|
|
if (rcv_buff == NUM_RBUFFS)
|
|
rcv_buff = 0;
|
|
|
|
status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
|
|
}
|
|
icom_port->next_rcv = rcv_buff;
|
|
|
|
spin_unlock(&icom_port->uart_port.lock);
|
|
tty_flip_buffer_push(port);
|
|
spin_lock(&icom_port->uart_port.lock);
|
|
}
|
|
|
|
static void process_interrupt(u16 port_int_reg,
|
|
struct icom_port *icom_port)
|
|
{
|
|
|
|
spin_lock(&icom_port->uart_port.lock);
|
|
trace(icom_port, "INTERRUPT", port_int_reg);
|
|
|
|
if (port_int_reg & (INT_XMIT_COMPLETED | INT_XMIT_DISABLED))
|
|
xmit_interrupt(port_int_reg, icom_port);
|
|
|
|
if (port_int_reg & INT_RCV_COMPLETED)
|
|
recv_interrupt(port_int_reg, icom_port);
|
|
|
|
spin_unlock(&icom_port->uart_port.lock);
|
|
}
|
|
|
|
static irqreturn_t icom_interrupt(int irq, void *dev_id)
|
|
{
|
|
void __iomem * int_reg;
|
|
u32 adapter_interrupts;
|
|
u16 port_int_reg;
|
|
struct icom_adapter *icom_adapter;
|
|
struct icom_port *icom_port;
|
|
|
|
/* find icom_port for this interrupt */
|
|
icom_adapter = (struct icom_adapter *) dev_id;
|
|
|
|
if (icom_adapter->version == ADAPTER_V2) {
|
|
int_reg = icom_adapter->base_addr + 0x8024;
|
|
|
|
adapter_interrupts = readl(int_reg);
|
|
|
|
if (adapter_interrupts & 0x00003FFF) {
|
|
/* port 2 interrupt, NOTE: for all ADAPTER_V2, port 2 will be active */
|
|
icom_port = &icom_adapter->port_info[2];
|
|
port_int_reg = (u16) adapter_interrupts;
|
|
process_interrupt(port_int_reg, icom_port);
|
|
check_modem_status(icom_port);
|
|
}
|
|
if (adapter_interrupts & 0x3FFF0000) {
|
|
/* port 3 interrupt */
|
|
icom_port = &icom_adapter->port_info[3];
|
|
if (icom_port->status == ICOM_PORT_ACTIVE) {
|
|
port_int_reg =
|
|
(u16) (adapter_interrupts >> 16);
|
|
process_interrupt(port_int_reg, icom_port);
|
|
check_modem_status(icom_port);
|
|
}
|
|
}
|
|
|
|
/* Clear out any pending interrupts */
|
|
writel(adapter_interrupts, int_reg);
|
|
|
|
int_reg = icom_adapter->base_addr + 0x8004;
|
|
} else {
|
|
int_reg = icom_adapter->base_addr + 0x4004;
|
|
}
|
|
|
|
adapter_interrupts = readl(int_reg);
|
|
|
|
if (adapter_interrupts & 0x00003FFF) {
|
|
/* port 0 interrupt, NOTE: for all adapters, port 0 will be active */
|
|
icom_port = &icom_adapter->port_info[0];
|
|
port_int_reg = (u16) adapter_interrupts;
|
|
process_interrupt(port_int_reg, icom_port);
|
|
check_modem_status(icom_port);
|
|
}
|
|
if (adapter_interrupts & 0x3FFF0000) {
|
|
/* port 1 interrupt */
|
|
icom_port = &icom_adapter->port_info[1];
|
|
if (icom_port->status == ICOM_PORT_ACTIVE) {
|
|
port_int_reg = (u16) (adapter_interrupts >> 16);
|
|
process_interrupt(port_int_reg, icom_port);
|
|
check_modem_status(icom_port);
|
|
}
|
|
}
|
|
|
|
/* Clear out any pending interrupts */
|
|
writel(adapter_interrupts, int_reg);
|
|
|
|
/* flush the write */
|
|
adapter_interrupts = readl(int_reg);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* ------------------------------------------------------------------
|
|
* Begin serial-core API
|
|
* ------------------------------------------------------------------
|
|
*/
|
|
static unsigned int icom_tx_empty(struct uart_port *port)
|
|
{
|
|
int ret;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&port->lock, flags);
|
|
if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
|
|
SA_FLAGS_READY_TO_XMIT)
|
|
ret = TIOCSER_TEMT;
|
|
else
|
|
ret = 0;
|
|
|
|
spin_unlock_irqrestore(&port->lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
static void icom_set_mctrl(struct uart_port *port, unsigned int mctrl)
|
|
{
|
|
unsigned char local_osr;
|
|
|
|
trace(ICOM_PORT, "SET_MODEM", 0);
|
|
local_osr = readb(&ICOM_PORT->dram->osr);
|
|
|
|
if (mctrl & TIOCM_RTS) {
|
|
trace(ICOM_PORT, "RAISE_RTS", 0);
|
|
local_osr |= ICOM_RTS;
|
|
} else {
|
|
trace(ICOM_PORT, "LOWER_RTS", 0);
|
|
local_osr &= ~ICOM_RTS;
|
|
}
|
|
|
|
if (mctrl & TIOCM_DTR) {
|
|
trace(ICOM_PORT, "RAISE_DTR", 0);
|
|
local_osr |= ICOM_DTR;
|
|
} else {
|
|
trace(ICOM_PORT, "LOWER_DTR", 0);
|
|
local_osr &= ~ICOM_DTR;
|
|
}
|
|
|
|
writeb(local_osr, &ICOM_PORT->dram->osr);
|
|
}
|
|
|
|
static unsigned int icom_get_mctrl(struct uart_port *port)
|
|
{
|
|
unsigned char status;
|
|
unsigned int result;
|
|
|
|
trace(ICOM_PORT, "GET_MODEM", 0);
|
|
|
|
status = readb(&ICOM_PORT->dram->isr);
|
|
|
|
result = ((status & ICOM_DCD) ? TIOCM_CAR : 0)
|
|
| ((status & ICOM_RI) ? TIOCM_RNG : 0)
|
|
| ((status & ICOM_DSR) ? TIOCM_DSR : 0)
|
|
| ((status & ICOM_CTS) ? TIOCM_CTS : 0);
|
|
return result;
|
|
}
|
|
|
|
static void icom_stop_tx(struct uart_port *port)
|
|
{
|
|
unsigned char cmdReg;
|
|
|
|
trace(ICOM_PORT, "STOP", 0);
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
|
|
}
|
|
|
|
static void icom_start_tx(struct uart_port *port)
|
|
{
|
|
unsigned char cmdReg;
|
|
|
|
trace(ICOM_PORT, "START", 0);
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
if ((cmdReg & CMD_HOLD_XMIT) == CMD_HOLD_XMIT)
|
|
writeb(cmdReg & ~CMD_HOLD_XMIT,
|
|
&ICOM_PORT->dram->CmdReg);
|
|
|
|
icom_write(port);
|
|
}
|
|
|
|
static void icom_send_xchar(struct uart_port *port, char ch)
|
|
{
|
|
unsigned char xdata;
|
|
int index;
|
|
unsigned long flags;
|
|
|
|
trace(ICOM_PORT, "SEND_XCHAR", ch);
|
|
|
|
/* wait .1 sec to send char */
|
|
for (index = 0; index < 10; index++) {
|
|
spin_lock_irqsave(&port->lock, flags);
|
|
xdata = readb(&ICOM_PORT->dram->xchar);
|
|
if (xdata == 0x00) {
|
|
trace(ICOM_PORT, "QUICK_WRITE", 0);
|
|
writeb(ch, &ICOM_PORT->dram->xchar);
|
|
|
|
/* flush write operation */
|
|
xdata = readb(&ICOM_PORT->dram->xchar);
|
|
spin_unlock_irqrestore(&port->lock, flags);
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&port->lock, flags);
|
|
msleep(10);
|
|
}
|
|
}
|
|
|
|
static void icom_stop_rx(struct uart_port *port)
|
|
{
|
|
unsigned char cmdReg;
|
|
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
|
|
}
|
|
|
|
static void icom_break(struct uart_port *port, int break_state)
|
|
{
|
|
unsigned char cmdReg;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&port->lock, flags);
|
|
trace(ICOM_PORT, "BREAK", 0);
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
if (break_state == -1) {
|
|
writeb(cmdReg | CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
|
|
} else {
|
|
writeb(cmdReg & ~CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
|
|
}
|
|
spin_unlock_irqrestore(&port->lock, flags);
|
|
}
|
|
|
|
static int icom_open(struct uart_port *port)
|
|
{
|
|
int retval;
|
|
|
|
kref_get(&ICOM_PORT->adapter->kref);
|
|
retval = startup(ICOM_PORT);
|
|
|
|
if (retval) {
|
|
kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
|
|
trace(ICOM_PORT, "STARTUP_ERROR", 0);
|
|
return retval;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void icom_close(struct uart_port *port)
|
|
{
|
|
unsigned char cmdReg;
|
|
|
|
trace(ICOM_PORT, "CLOSE", 0);
|
|
|
|
/* stop receiver */
|
|
cmdReg = readb(&ICOM_PORT->dram->CmdReg);
|
|
writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
|
|
|
|
shutdown(ICOM_PORT);
|
|
|
|
kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
|
|
}
|
|
|
|
static void icom_set_termios(struct uart_port *port,
|
|
struct ktermios *termios,
|
|
struct ktermios *old_termios)
|
|
{
|
|
int baud;
|
|
unsigned cflag, iflag;
|
|
char new_config2;
|
|
char new_config3 = 0;
|
|
char tmp_byte;
|
|
int index;
|
|
int rcv_buff, xmit_buff;
|
|
unsigned long offset;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&port->lock, flags);
|
|
trace(ICOM_PORT, "CHANGE_SPEED", 0);
|
|
|
|
cflag = termios->c_cflag;
|
|
iflag = termios->c_iflag;
|
|
|
|
new_config2 = ICOM_ACFG_DRIVE1;
|
|
|
|
/* byte size and parity */
|
|
switch (cflag & CSIZE) {
|
|
case CS5: /* 5 bits/char */
|
|
new_config2 |= ICOM_ACFG_5BPC;
|
|
break;
|
|
case CS6: /* 6 bits/char */
|
|
new_config2 |= ICOM_ACFG_6BPC;
|
|
break;
|
|
case CS7: /* 7 bits/char */
|
|
new_config2 |= ICOM_ACFG_7BPC;
|
|
break;
|
|
case CS8: /* 8 bits/char */
|
|
new_config2 |= ICOM_ACFG_8BPC;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (cflag & CSTOPB) {
|
|
/* 2 stop bits */
|
|
new_config2 |= ICOM_ACFG_2STOP_BIT;
|
|
}
|
|
if (cflag & PARENB) {
|
|
/* parity bit enabled */
|
|
new_config2 |= ICOM_ACFG_PARITY_ENAB;
|
|
trace(ICOM_PORT, "PARENB", 0);
|
|
}
|
|
if (cflag & PARODD) {
|
|
/* odd parity */
|
|
new_config2 |= ICOM_ACFG_PARITY_ODD;
|
|
trace(ICOM_PORT, "PARODD", 0);
|
|
}
|
|
|
|
/* Determine divisor based on baud rate */
|
|
baud = uart_get_baud_rate(port, termios, old_termios,
|
|
icom_acfg_baud[0],
|
|
icom_acfg_baud[BAUD_TABLE_LIMIT]);
|
|
if (!baud)
|
|
baud = 9600; /* B0 transition handled in rs_set_termios */
|
|
|
|
for (index = 0; index < BAUD_TABLE_LIMIT; index++) {
|
|
if (icom_acfg_baud[index] == baud) {
|
|
new_config3 = index;
|
|
break;
|
|
}
|
|
}
|
|
|
|
uart_update_timeout(port, cflag, baud);
|
|
|
|
/* CTS flow control flag and modem status interrupts */
|
|
tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
|
|
if (cflag & CRTSCTS)
|
|
tmp_byte |= HDLC_HDW_FLOW;
|
|
else
|
|
tmp_byte &= ~HDLC_HDW_FLOW;
|
|
writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
|
|
|
|
/*
|
|
* Set up parity check flag
|
|
*/
|
|
ICOM_PORT->read_status_mask = SA_FLAGS_OVERRUN | SA_FL_RCV_DONE;
|
|
if (iflag & INPCK)
|
|
ICOM_PORT->read_status_mask |=
|
|
SA_FLAGS_FRAME_ERROR | SA_FLAGS_PARITY_ERROR;
|
|
|
|
if ((iflag & BRKINT) || (iflag & PARMRK))
|
|
ICOM_PORT->read_status_mask |= SA_FLAGS_BREAK_DET;
|
|
|
|
/*
|
|
* Characters to ignore
|
|
*/
|
|
ICOM_PORT->ignore_status_mask = 0;
|
|
if (iflag & IGNPAR)
|
|
ICOM_PORT->ignore_status_mask |=
|
|
SA_FLAGS_PARITY_ERROR | SA_FLAGS_FRAME_ERROR;
|
|
if (iflag & IGNBRK) {
|
|
ICOM_PORT->ignore_status_mask |= SA_FLAGS_BREAK_DET;
|
|
/*
|
|
* If we're ignore parity and break indicators, ignore
|
|
* overruns too. (For real raw support).
|
|
*/
|
|
if (iflag & IGNPAR)
|
|
ICOM_PORT->ignore_status_mask |= SA_FLAGS_OVERRUN;
|
|
}
|
|
|
|
/*
|
|
* !!! ignore all characters if CREAD is not set
|
|
*/
|
|
if ((cflag & CREAD) == 0)
|
|
ICOM_PORT->ignore_status_mask |= SA_FL_RCV_DONE;
|
|
|
|
/* Turn off Receiver to prepare for reset */
|
|
writeb(CMD_RCV_DISABLE, &ICOM_PORT->dram->CmdReg);
|
|
|
|
for (index = 0; index < 10; index++) {
|
|
if (readb(&ICOM_PORT->dram->PrevCmdReg) == 0x00) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* clear all current buffers of data */
|
|
for (rcv_buff = 0; rcv_buff < NUM_RBUFFS; rcv_buff++) {
|
|
ICOM_PORT->statStg->rcv[rcv_buff].flags = 0;
|
|
ICOM_PORT->statStg->rcv[rcv_buff].leLength = 0;
|
|
ICOM_PORT->statStg->rcv[rcv_buff].WorkingLength =
|
|
(unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
|
|
}
|
|
|
|
for (xmit_buff = 0; xmit_buff < NUM_XBUFFS; xmit_buff++) {
|
|
ICOM_PORT->statStg->xmit[xmit_buff].flags = 0;
|
|
}
|
|
|
|
/* activate changes and start xmit and receiver here */
|
|
/* Enable the receiver */
|
|
writeb(new_config3, &(ICOM_PORT->dram->async_config3));
|
|
writeb(new_config2, &(ICOM_PORT->dram->async_config2));
|
|
tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
|
|
tmp_byte |= HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL;
|
|
writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
|
|
writeb(0x04, &(ICOM_PORT->dram->FlagFillIdleTimer)); /* 0.5 seconds */
|
|
writeb(0xFF, &(ICOM_PORT->dram->ier)); /* enable modem signal interrupts */
|
|
|
|
/* reset processor */
|
|
writeb(CMD_RESTART, &ICOM_PORT->dram->CmdReg);
|
|
|
|
for (index = 0; index < 10; index++) {
|
|
if (readb(&ICOM_PORT->dram->CmdReg) == 0x00) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Enable Transmitter and Receiver */
|
|
offset =
|
|
(unsigned long) &ICOM_PORT->statStg->rcv[0] -
|
|
(unsigned long) ICOM_PORT->statStg;
|
|
writel(ICOM_PORT->statStg_pci + offset,
|
|
&ICOM_PORT->dram->RcvStatusAddr);
|
|
ICOM_PORT->next_rcv = 0;
|
|
ICOM_PORT->put_length = 0;
|
|
*ICOM_PORT->xmitRestart = 0;
|
|
writel(ICOM_PORT->xmitRestart_pci,
|
|
&ICOM_PORT->dram->XmitStatusAddr);
|
|
trace(ICOM_PORT, "XR_ENAB", 0);
|
|
writeb(CMD_XMIT_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
|
|
|
|
spin_unlock_irqrestore(&port->lock, flags);
|
|
}
|
|
|
|
static const char *icom_type(struct uart_port *port)
|
|
{
|
|
return "icom";
|
|
}
|
|
|
|
static void icom_release_port(struct uart_port *port)
|
|
{
|
|
}
|
|
|
|
static int icom_request_port(struct uart_port *port)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void icom_config_port(struct uart_port *port, int flags)
|
|
{
|
|
port->type = PORT_ICOM;
|
|
}
|
|
|
|
static const struct uart_ops icom_ops = {
|
|
.tx_empty = icom_tx_empty,
|
|
.set_mctrl = icom_set_mctrl,
|
|
.get_mctrl = icom_get_mctrl,
|
|
.stop_tx = icom_stop_tx,
|
|
.start_tx = icom_start_tx,
|
|
.send_xchar = icom_send_xchar,
|
|
.stop_rx = icom_stop_rx,
|
|
.break_ctl = icom_break,
|
|
.startup = icom_open,
|
|
.shutdown = icom_close,
|
|
.set_termios = icom_set_termios,
|
|
.type = icom_type,
|
|
.release_port = icom_release_port,
|
|
.request_port = icom_request_port,
|
|
.config_port = icom_config_port,
|
|
};
|
|
|
|
#define ICOM_CONSOLE NULL
|
|
|
|
static struct uart_driver icom_uart_driver = {
|
|
.owner = THIS_MODULE,
|
|
.driver_name = ICOM_DRIVER_NAME,
|
|
.dev_name = "ttyA",
|
|
.major = ICOM_MAJOR,
|
|
.minor = ICOM_MINOR_START,
|
|
.nr = NR_PORTS,
|
|
.cons = ICOM_CONSOLE,
|
|
};
|
|
|
|
static int icom_init_ports(struct icom_adapter *icom_adapter)
|
|
{
|
|
u32 subsystem_id = icom_adapter->subsystem_id;
|
|
int i;
|
|
struct icom_port *icom_port;
|
|
|
|
if (icom_adapter->version == ADAPTER_V1) {
|
|
icom_adapter->numb_ports = 2;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
icom_port = &icom_adapter->port_info[i];
|
|
icom_port->port = i;
|
|
icom_port->status = ICOM_PORT_ACTIVE;
|
|
icom_port->imbed_modem = ICOM_UNKNOWN;
|
|
}
|
|
} else {
|
|
if (subsystem_id == PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL) {
|
|
icom_adapter->numb_ports = 4;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
icom_port = &icom_adapter->port_info[i];
|
|
|
|
icom_port->port = i;
|
|
icom_port->status = ICOM_PORT_ACTIVE;
|
|
icom_port->imbed_modem = ICOM_IMBED_MODEM;
|
|
}
|
|
} else {
|
|
icom_adapter->numb_ports = 4;
|
|
|
|
icom_adapter->port_info[0].port = 0;
|
|
icom_adapter->port_info[0].status = ICOM_PORT_ACTIVE;
|
|
|
|
if (subsystem_id ==
|
|
PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM) {
|
|
icom_adapter->port_info[0].imbed_modem = ICOM_IMBED_MODEM;
|
|
} else {
|
|
icom_adapter->port_info[0].imbed_modem = ICOM_RVX;
|
|
}
|
|
|
|
icom_adapter->port_info[1].status = ICOM_PORT_OFF;
|
|
|
|
icom_adapter->port_info[2].port = 2;
|
|
icom_adapter->port_info[2].status = ICOM_PORT_ACTIVE;
|
|
icom_adapter->port_info[2].imbed_modem = ICOM_RVX;
|
|
icom_adapter->port_info[3].status = ICOM_PORT_OFF;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void icom_port_active(struct icom_port *icom_port, struct icom_adapter *icom_adapter, int port_num)
|
|
{
|
|
if (icom_adapter->version == ADAPTER_V1) {
|
|
icom_port->global_reg = icom_adapter->base_addr + 0x4000;
|
|
icom_port->int_reg = icom_adapter->base_addr +
|
|
0x4004 + 2 - 2 * port_num;
|
|
} else {
|
|
icom_port->global_reg = icom_adapter->base_addr + 0x8000;
|
|
if (icom_port->port < 2)
|
|
icom_port->int_reg = icom_adapter->base_addr +
|
|
0x8004 + 2 - 2 * icom_port->port;
|
|
else
|
|
icom_port->int_reg = icom_adapter->base_addr +
|
|
0x8024 + 2 - 2 * (icom_port->port - 2);
|
|
}
|
|
}
|
|
static int icom_load_ports(struct icom_adapter *icom_adapter)
|
|
{
|
|
struct icom_port *icom_port;
|
|
int port_num;
|
|
|
|
for (port_num = 0; port_num < icom_adapter->numb_ports; port_num++) {
|
|
|
|
icom_port = &icom_adapter->port_info[port_num];
|
|
|
|
if (icom_port->status == ICOM_PORT_ACTIVE) {
|
|
icom_port_active(icom_port, icom_adapter, port_num);
|
|
icom_port->dram = icom_adapter->base_addr +
|
|
0x2000 * icom_port->port;
|
|
|
|
icom_port->adapter = icom_adapter;
|
|
|
|
/* get port memory */
|
|
if (get_port_memory(icom_port) != 0) {
|
|
dev_err(&icom_port->adapter->pci_dev->dev,
|
|
"Memory allocation for port FAILED\n");
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int icom_alloc_adapter(struct icom_adapter
|
|
**icom_adapter_ref)
|
|
{
|
|
int adapter_count = 0;
|
|
struct icom_adapter *icom_adapter;
|
|
struct icom_adapter *cur_adapter_entry;
|
|
struct list_head *tmp;
|
|
|
|
icom_adapter = kzalloc(sizeof(struct icom_adapter), GFP_KERNEL);
|
|
|
|
if (!icom_adapter) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
list_for_each(tmp, &icom_adapter_head) {
|
|
cur_adapter_entry =
|
|
list_entry(tmp, struct icom_adapter,
|
|
icom_adapter_entry);
|
|
if (cur_adapter_entry->index != adapter_count) {
|
|
break;
|
|
}
|
|
adapter_count++;
|
|
}
|
|
|
|
icom_adapter->index = adapter_count;
|
|
list_add_tail(&icom_adapter->icom_adapter_entry, tmp);
|
|
|
|
*icom_adapter_ref = icom_adapter;
|
|
return 0;
|
|
}
|
|
|
|
static void icom_free_adapter(struct icom_adapter *icom_adapter)
|
|
{
|
|
list_del(&icom_adapter->icom_adapter_entry);
|
|
kfree(icom_adapter);
|
|
}
|
|
|
|
static void icom_remove_adapter(struct icom_adapter *icom_adapter)
|
|
{
|
|
struct icom_port *icom_port;
|
|
int index;
|
|
|
|
for (index = 0; index < icom_adapter->numb_ports; index++) {
|
|
icom_port = &icom_adapter->port_info[index];
|
|
|
|
if (icom_port->status == ICOM_PORT_ACTIVE) {
|
|
dev_info(&icom_adapter->pci_dev->dev,
|
|
"Device removed\n");
|
|
|
|
uart_remove_one_port(&icom_uart_driver,
|
|
&icom_port->uart_port);
|
|
|
|
/* be sure that DTR and RTS are dropped */
|
|
writeb(0x00, &icom_port->dram->osr);
|
|
|
|
/* Wait 0.1 Sec for simple Init to complete */
|
|
msleep(100);
|
|
|
|
/* Stop proccessor */
|
|
stop_processor(icom_port);
|
|
|
|
free_port_memory(icom_port);
|
|
}
|
|
}
|
|
|
|
free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter);
|
|
iounmap(icom_adapter->base_addr);
|
|
pci_release_regions(icom_adapter->pci_dev);
|
|
icom_free_adapter(icom_adapter);
|
|
}
|
|
|
|
static void icom_kref_release(struct kref *kref)
|
|
{
|
|
struct icom_adapter *icom_adapter;
|
|
|
|
icom_adapter = to_icom_adapter(kref);
|
|
icom_remove_adapter(icom_adapter);
|
|
}
|
|
|
|
static int icom_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
int index;
|
|
unsigned int command_reg;
|
|
int retval;
|
|
struct icom_adapter *icom_adapter;
|
|
struct icom_port *icom_port;
|
|
|
|
retval = pci_enable_device(dev);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "Device enable FAILED\n");
|
|
return retval;
|
|
}
|
|
|
|
retval = pci_request_regions(dev, "icom");
|
|
if (retval) {
|
|
dev_err(&dev->dev, "pci_request_regions FAILED\n");
|
|
pci_disable_device(dev);
|
|
return retval;
|
|
}
|
|
|
|
pci_set_master(dev);
|
|
|
|
retval = pci_read_config_dword(dev, PCI_COMMAND, &command_reg);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "PCI Config read FAILED\n");
|
|
return retval;
|
|
}
|
|
|
|
pci_write_config_dword(dev, PCI_COMMAND,
|
|
command_reg | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
|
|
| PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
|
|
|
|
if (ent->driver_data == ADAPTER_V1) {
|
|
pci_write_config_dword(dev, 0x44, 0x8300830A);
|
|
} else {
|
|
pci_write_config_dword(dev, 0x44, 0x42004200);
|
|
pci_write_config_dword(dev, 0x48, 0x42004200);
|
|
}
|
|
|
|
|
|
retval = icom_alloc_adapter(&icom_adapter);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "icom_alloc_adapter FAILED\n");
|
|
retval = -EIO;
|
|
goto probe_exit0;
|
|
}
|
|
|
|
icom_adapter->base_addr_pci = pci_resource_start(dev, 0);
|
|
icom_adapter->pci_dev = dev;
|
|
icom_adapter->version = ent->driver_data;
|
|
icom_adapter->subsystem_id = ent->subdevice;
|
|
|
|
|
|
retval = icom_init_ports(icom_adapter);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "Port configuration failed\n");
|
|
goto probe_exit1;
|
|
}
|
|
|
|
icom_adapter->base_addr = pci_ioremap_bar(dev, 0);
|
|
|
|
if (!icom_adapter->base_addr) {
|
|
retval = -ENOMEM;
|
|
goto probe_exit1;
|
|
}
|
|
|
|
/* save off irq and request irq line */
|
|
retval = request_irq(dev->irq, icom_interrupt, IRQF_SHARED, ICOM_DRIVER_NAME, (void *)icom_adapter);
|
|
if (retval) {
|
|
goto probe_exit2;
|
|
}
|
|
|
|
retval = icom_load_ports(icom_adapter);
|
|
|
|
for (index = 0; index < icom_adapter->numb_ports; index++) {
|
|
icom_port = &icom_adapter->port_info[index];
|
|
|
|
if (icom_port->status == ICOM_PORT_ACTIVE) {
|
|
icom_port->uart_port.irq = icom_port->adapter->pci_dev->irq;
|
|
icom_port->uart_port.type = PORT_ICOM;
|
|
icom_port->uart_port.iotype = UPIO_MEM;
|
|
icom_port->uart_port.membase =
|
|
(unsigned char __iomem *)icom_adapter->base_addr_pci;
|
|
icom_port->uart_port.fifosize = 16;
|
|
icom_port->uart_port.ops = &icom_ops;
|
|
icom_port->uart_port.line =
|
|
icom_port->port + icom_adapter->index * 4;
|
|
if (uart_add_one_port (&icom_uart_driver, &icom_port->uart_port)) {
|
|
icom_port->status = ICOM_PORT_OFF;
|
|
dev_err(&dev->dev, "Device add failed\n");
|
|
} else
|
|
dev_info(&dev->dev, "Device added\n");
|
|
}
|
|
}
|
|
|
|
kref_init(&icom_adapter->kref);
|
|
return 0;
|
|
|
|
probe_exit2:
|
|
iounmap(icom_adapter->base_addr);
|
|
probe_exit1:
|
|
icom_free_adapter(icom_adapter);
|
|
|
|
probe_exit0:
|
|
pci_release_regions(dev);
|
|
pci_disable_device(dev);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void icom_remove(struct pci_dev *dev)
|
|
{
|
|
struct icom_adapter *icom_adapter;
|
|
struct list_head *tmp;
|
|
|
|
list_for_each(tmp, &icom_adapter_head) {
|
|
icom_adapter = list_entry(tmp, struct icom_adapter,
|
|
icom_adapter_entry);
|
|
if (icom_adapter->pci_dev == dev) {
|
|
kref_put(&icom_adapter->kref, icom_kref_release);
|
|
return;
|
|
}
|
|
}
|
|
|
|
dev_err(&dev->dev, "Unable to find device to remove\n");
|
|
}
|
|
|
|
static struct pci_driver icom_pci_driver = {
|
|
.name = ICOM_DRIVER_NAME,
|
|
.id_table = icom_pci_table,
|
|
.probe = icom_probe,
|
|
.remove = icom_remove,
|
|
};
|
|
|
|
static int __init icom_init(void)
|
|
{
|
|
int ret;
|
|
|
|
spin_lock_init(&icom_lock);
|
|
|
|
ret = uart_register_driver(&icom_uart_driver);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pci_register_driver(&icom_pci_driver);
|
|
|
|
if (ret < 0)
|
|
uart_unregister_driver(&icom_uart_driver);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit icom_exit(void)
|
|
{
|
|
pci_unregister_driver(&icom_pci_driver);
|
|
uart_unregister_driver(&icom_uart_driver);
|
|
}
|
|
|
|
module_init(icom_init);
|
|
module_exit(icom_exit);
|
|
|
|
MODULE_AUTHOR("Michael Anderson <mjanders@us.ibm.com>");
|
|
MODULE_DESCRIPTION("IBM iSeries Serial IOA driver");
|
|
MODULE_SUPPORTED_DEVICE
|
|
("IBM iSeries 2745, 2771, 2772, 2742, 2793 and 2805 Communications adapters");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_FIRMWARE("icom_call_setup.bin");
|
|
MODULE_FIRMWARE("icom_res_dce.bin");
|
|
MODULE_FIRMWARE("icom_asc.bin");
|