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1699 lines
40 KiB
1699 lines
40 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
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* Original driver code supplied by Multi-Tech |
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* |
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* Changes |
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* 1/9/98 [email protected] |
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* Merge to 2.0.x kernel tree |
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* Obtain and use official major/minors |
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* Loader switched to a misc device |
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* (fixed range check bug as a side effect) |
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* Printk clean up |
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* 9/12/98 [email protected] |
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* Rough port to 2.1.x |
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* |
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* 10/6/99 sameer Merged the ISA and PCI drivers to |
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* a new unified driver. |
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* |
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* 3/9/99 sameer Added support for ISI4616 cards. |
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* |
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* 16/9/99 sameer We do not force RTS low anymore. |
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* This is to prevent the firmware |
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* from getting confused. |
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* |
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* 26/10/99 sameer Cosmetic changes:The driver now |
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* dumps the Port Count information |
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* along with I/O address and IRQ. |
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* |
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* 13/12/99 sameer Fixed the problem with IRQ sharing. |
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* |
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* 10/5/00 sameer Fixed isicom_shutdown_board() |
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* to not lower DTR on all the ports |
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* when the last port on the card is |
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* closed. |
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* |
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* 10/5/00 sameer Signal mask setup command added |
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* to isicom_setup_port and |
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* isicom_shutdown_port. |
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* |
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* 24/5/00 sameer The driver is now SMP aware. |
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* |
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* |
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* 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
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* |
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* |
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* 03/01/01 anil .s Added support for resetting the |
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* internal modems on ISI cards. |
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* |
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* 08/02/01 anil .s Upgraded the driver for kernel |
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* 2.4.x |
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* |
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* 11/04/01 Kevin Fixed firmware load problem with |
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* ISIHP-4X card |
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* |
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* 30/04/01 anil .s Fixed the remote login through |
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* ISI port problem. Now the link |
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* does not go down before password |
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* prompt. |
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* |
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* 03/05/01 anil .s Fixed the problem with IRQ sharing |
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* among ISI-PCI cards. |
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* |
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* 03/05/01 anil .s Added support to display the version |
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* info during insmod as well as module |
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* listing by lsmod. |
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* |
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* 10/05/01 anil .s Done the modifications to the source |
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* file and Install script so that the |
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* same installation can be used for |
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* 2.2.x and 2.4.x kernel. |
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* |
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* 06/06/01 anil .s Now we drop both dtr and rts during |
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* shutdown_port as well as raise them |
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* during isicom_config_port. |
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* |
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* 09/06/01 [email protected] use capable, not suser, do |
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* restore_flags on failure in |
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* isicom_send_break, verify put_user |
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* result |
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* |
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* 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
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* Baud index extended to 21 |
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* |
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* 20/03/03 ranjeeth Made to work for Linux Advanced server. |
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* Taken care of license warning. |
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* |
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* 10/12/03 Ravindra Made to work for Fedora Core 1 of |
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* Red Hat Distribution |
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* |
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* 06/01/05 Alan Cox Merged the ISI and base kernel strands |
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* into a single 2.6 driver |
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* |
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* *********************************************************** |
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* |
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* To use this driver you also need the support package. You |
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* can find this in RPM format on |
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* ftp://ftp.linux.org.uk/pub/linux/alan |
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* |
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* You can find the original tools for this direct from Multitech |
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* ftp://ftp.multitech.com/ISI-Cards/ |
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* |
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* Having installed the cards the module options (/etc/modprobe.d/) |
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* |
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* options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 |
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* |
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* Omit those entries for boards you don't have installed. |
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* |
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* TODO |
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* Merge testing |
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* 64-bit verification |
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*/ |
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
|
|
|
#include <linux/module.h> |
|
#include <linux/firmware.h> |
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#include <linux/kernel.h> |
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#include <linux/tty.h> |
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#include <linux/tty_flip.h> |
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#include <linux/termios.h> |
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#include <linux/fs.h> |
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#include <linux/sched.h> |
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#include <linux/serial.h> |
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#include <linux/mm.h> |
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#include <linux/interrupt.h> |
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#include <linux/timer.h> |
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#include <linux/delay.h> |
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#include <linux/ioport.h> |
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#include <linux/slab.h> |
|
|
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#include <linux/uaccess.h> |
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#include <linux/io.h> |
|
|
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#include <linux/pci.h> |
|
|
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#include <linux/isicom.h> |
|
|
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#define InterruptTheCard(base) outw(0, (base) + 0xc) |
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#define ClearInterrupt(base) inw((base) + 0x0a) |
|
|
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#ifdef DEBUG |
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#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
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#else |
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#define isicom_paranoia_check(a, b, c) 0 |
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#endif |
|
|
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static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
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static void isicom_remove(struct pci_dev *); |
|
|
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static const struct pci_device_id isicom_pci_tbl[] = { |
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{ PCI_DEVICE(VENDOR_ID, 0x2028) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2051) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2052) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2053) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2054) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2055) }, |
|
{ PCI_DEVICE(VENDOR_ID, 0x2056) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2057) }, |
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{ PCI_DEVICE(VENDOR_ID, 0x2058) }, |
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{ 0 } |
|
}; |
|
MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); |
|
|
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static struct pci_driver isicom_driver = { |
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.name = "isicom", |
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.id_table = isicom_pci_tbl, |
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.probe = isicom_probe, |
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.remove = isicom_remove |
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}; |
|
|
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static int prev_card = 3; /* start servicing isi_card[0] */ |
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static struct tty_driver *isicom_normal; |
|
|
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static void isicom_tx(struct timer_list *unused); |
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static void isicom_start(struct tty_struct *tty); |
|
|
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static DEFINE_TIMER(tx, isicom_tx); |
|
|
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/* baud index mappings from linux defns to isi */ |
|
|
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static signed char linuxb_to_isib[] = { |
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-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
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}; |
|
|
|
struct isi_board { |
|
unsigned long base; |
|
int irq; |
|
unsigned char port_count; |
|
unsigned short status; |
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unsigned short port_status; /* each bit for each port */ |
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unsigned short shift_count; |
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struct isi_port *ports; |
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signed char count; |
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spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
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unsigned long flags; |
|
unsigned int index; |
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}; |
|
|
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struct isi_port { |
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unsigned short magic; |
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struct tty_port port; |
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u16 channel; |
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u16 status; |
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struct isi_board *card; |
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unsigned char *xmit_buf; |
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int xmit_head; |
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int xmit_tail; |
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int xmit_cnt; |
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}; |
|
|
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static struct isi_board isi_card[BOARD_COUNT]; |
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static struct isi_port isi_ports[PORT_COUNT]; |
|
|
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/* |
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* Locking functions for card level locking. We need to own both |
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* the kernel lock for the card and have the card in a position that |
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* it wants to talk. |
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*/ |
|
|
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static int WaitTillCardIsFree(unsigned long base) |
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{ |
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unsigned int count = 0; |
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|
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while (!(inw(base + 0xe) & 0x1) && count++ < 100) |
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mdelay(1); |
|
|
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return !(inw(base + 0xe) & 0x1); |
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} |
|
|
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static int lock_card(struct isi_board *card) |
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{ |
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unsigned long base = card->base; |
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unsigned int retries, a; |
|
|
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for (retries = 0; retries < 10; retries++) { |
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spin_lock_irqsave(&card->card_lock, card->flags); |
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for (a = 0; a < 10; a++) { |
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if (inw(base + 0xe) & 0x1) |
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return 1; |
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udelay(10); |
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} |
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spin_unlock_irqrestore(&card->card_lock, card->flags); |
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msleep(10); |
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} |
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pr_warn("Failed to lock Card (0x%lx)\n", card->base); |
|
|
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return 0; /* Failed to acquire the card! */ |
|
} |
|
|
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static void unlock_card(struct isi_board *card) |
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{ |
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spin_unlock_irqrestore(&card->card_lock, card->flags); |
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} |
|
|
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/* |
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* ISI Card specific ops ... |
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*/ |
|
|
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/* card->lock HAS to be held */ |
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static void raise_dtr(struct isi_port *port) |
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{ |
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struct isi_board *card = port->card; |
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unsigned long base = card->base; |
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u16 channel = port->channel; |
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|
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if (WaitTillCardIsFree(base)) |
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return; |
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|
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0504, base); |
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InterruptTheCard(base); |
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port->status |= ISI_DTR; |
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} |
|
|
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/* card->lock HAS to be held */ |
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static void drop_dtr(struct isi_port *port) |
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{ |
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struct isi_board *card = port->card; |
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unsigned long base = card->base; |
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u16 channel = port->channel; |
|
|
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if (WaitTillCardIsFree(base)) |
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return; |
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|
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0404, base); |
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InterruptTheCard(base); |
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port->status &= ~ISI_DTR; |
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} |
|
|
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/* card->lock HAS to be held */ |
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static inline void raise_rts(struct isi_port *port) |
|
{ |
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struct isi_board *card = port->card; |
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unsigned long base = card->base; |
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u16 channel = port->channel; |
|
|
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if (WaitTillCardIsFree(base)) |
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return; |
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|
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0a04, base); |
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InterruptTheCard(base); |
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port->status |= ISI_RTS; |
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} |
|
|
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/* card->lock HAS to be held */ |
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static inline void drop_rts(struct isi_port *port) |
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{ |
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struct isi_board *card = port->card; |
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unsigned long base = card->base; |
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u16 channel = port->channel; |
|
|
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if (WaitTillCardIsFree(base)) |
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return; |
|
|
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0804, base); |
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InterruptTheCard(base); |
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port->status &= ~ISI_RTS; |
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} |
|
|
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/* card->lock MUST NOT be held */ |
|
|
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static void isicom_dtr_rts(struct tty_port *port, int on) |
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{ |
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struct isi_port *ip = container_of(port, struct isi_port, port); |
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struct isi_board *card = ip->card; |
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unsigned long base = card->base; |
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u16 channel = ip->channel; |
|
|
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if (!lock_card(card)) |
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return; |
|
|
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if (on) { |
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0f04, base); |
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InterruptTheCard(base); |
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ip->status |= (ISI_DTR | ISI_RTS); |
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} else { |
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
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outw(0x0C04, base); |
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InterruptTheCard(base); |
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ip->status &= ~(ISI_DTR | ISI_RTS); |
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} |
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unlock_card(card); |
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} |
|
|
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/* card->lock HAS to be held */ |
|
static void drop_dtr_rts(struct isi_port *port) |
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{ |
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struct isi_board *card = port->card; |
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unsigned long base = card->base; |
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u16 channel = port->channel; |
|
|
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if (WaitTillCardIsFree(base)) |
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return; |
|
|
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outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
|
outw(0x0c04, base); |
|
InterruptTheCard(base); |
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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_warn("Warning: bad isicom magic for dev %s in %s\n", |
|
name, routine); |
|
return 1; |
|
} |
|
if (port->magic != ISICOM_MAGIC) { |
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pr_warn("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(struct timer_list *unused) |
|
{ |
|
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; |
|
|
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/* 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 (!tty_port_initialized(&port->port) || |
|
!(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_warn("%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 (!tty_port_initialized(&port->port)) { |
|
outw(0x0000, base+0x04); /* enable interrupts */ |
|
spin_unlock(&card->card_lock); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
tty = tty_port_tty_get(&port->port); |
|
if (tty == NULL) { |
|
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 (tty_port_check_carrier(&port->port)) { |
|
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 (tty_port_cts_enabled(&port->port)) { |
|
if (tty->hw_stopped) { |
|
if (header & ISI_CTS) { |
|
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(&port->port, 0, TTY_BREAK); |
|
if (port->port.flags & ASYNC_SAK) |
|
do_SAK(tty); |
|
tty_flip_buffer_push(&port->port); |
|
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(&port->port, &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(&port->port, 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(&port->port); |
|
} |
|
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); |
|
} |
|
tty_port_set_check_carrier(&port->port, !C_CLOCAL(tty)); |
|
|
|
/* flow control settings ...*/ |
|
flow_ctrl = 0; |
|
tty_port_set_cts_flow(&port->port, C_CRTSCTS(tty)); |
|
if (C_CRTSCTS(tty)) |
|
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; |
|
|
|
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 & 0xff00u), 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 *ss) |
|
{ |
|
struct isi_port *port = tty->driver_data; |
|
int reconfig_port; |
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
|
return -ENODEV; |
|
|
|
mutex_lock(&port->port.mutex); |
|
reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
|
(ss->flags & ASYNC_SPD_MASK)); |
|
|
|
if (!capable(CAP_SYS_ADMIN)) { |
|
if ((ss->close_delay != port->port.close_delay) || |
|
(ss->closing_wait != port->port.closing_wait) || |
|
((ss->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) | |
|
(ss->flags & ASYNC_USR_MASK)); |
|
} else { |
|
port->port.close_delay = ss->close_delay; |
|
port->port.closing_wait = ss->closing_wait; |
|
port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
|
(ss->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 tty_struct *tty, |
|
struct serial_struct *ss) |
|
{ |
|
struct isi_port *port = tty->driver_data; |
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
|
return -ENODEV; |
|
|
|
mutex_lock(&port->port.mutex); |
|
/* ss->type = ? */ |
|
ss->line = port - isi_ports; |
|
ss->port = port->card->base; |
|
ss->irq = port->card->irq; |
|
ss->flags = port->port.flags; |
|
/* ss->baud_base = ? */ |
|
ss->close_delay = port->port.close_delay; |
|
ss->closing_wait = port->port.closing_wait; |
|
mutex_unlock(&port->port.mutex); |
|
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) && !C_CRTSCTS(tty)) { |
|
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, |
|
.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, |
|
.get_serial = isicom_get_serial_info, |
|
.set_serial = isicom_set_serial_info, |
|
}; |
|
|
|
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 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 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_array(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 isicom_probe(struct pci_dev *pdev, |
|
const struct pci_device_id *ent) |
|
{ |
|
unsigned int 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, 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++) { |
|
struct tty_port *tport = &board->ports[index].port; |
|
tty_port_init(tport); |
|
tport->ops = &isicom_port_ops; |
|
tport->close_delay = 50 * HZ/100; |
|
tport->closing_wait = 3000 * HZ/100; |
|
tty_port_register_device(tport, 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 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); |
|
tty_port_destroy(&board->ports[i].port); |
|
} |
|
|
|
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++) { |
|
port->magic = ISICOM_MAGIC; |
|
port->card = &isi_card[idx]; |
|
port->channel = channel; |
|
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->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");
|
|
|