From 291343676e328e1493204faa149746829c488b06 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 18 Jun 2021 08:14:07 +0200 Subject: mxser: drop ISA support While mxser PCI cards are still around and produced (Moxa provided me with two recently), ISA cards are obsolete for a long time. I haven't seen anyone using the cards and the ISA code paths are barely tested. Hence, remove ISA support from mxser driver so that we can clean the driver up. Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210618061516.662-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman --- drivers/tty/Kconfig | 2 +- drivers/tty/mxser.c | 348 ++-------------------------------------------------- 2 files changed, 8 insertions(+), 342 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index f6a7fd6d3bb6..476c11278235 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -204,7 +204,7 @@ config MOXA_INTELLIO config MOXA_SMARTIO tristate "Moxa SmartIO support v. 2.0" - depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) + depends on SERIAL_NONSTANDARD && PCI help Say Y here if you have a Moxa SmartIO multiport serial card and/or want to help develop a new version of this driver. diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index a74e6146a748..3a00f180f54a 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -70,18 +70,8 @@ #define PCI_DEVICE_ID_CB134I 0x1341 #define PCI_DEVICE_ID_CP138U 0x1380 - -#define C168_ASIC_ID 1 -#define C104_ASIC_ID 2 -#define C102_ASIC_ID 0xB -#define CI132_ASIC_ID 4 -#define CI134_ASIC_ID 3 -#define CI104J_ASIC_ID 5 - #define MXSER_HIGHBAUD 1 -#define MXSER_HAS2 2 -/* This is only for PCI */ static const struct { int type; int tx_fifo; @@ -105,14 +95,14 @@ struct mxser_cardinfo { }; static const struct mxser_cardinfo mxser_cards[] = { -/* 0*/ { "C168 series", 8, }, - { "C104 series", 4, }, - { "CI-104J series", 4, }, +/* 0*/ { }, + { }, + { }, { "C168H/PCI series", 8, }, { "C104H/PCI series", 4, }, -/* 5*/ { "C102 series", 4, MXSER_HAS2 }, /* C102-ISA */ - { "CI-132 series", 4, MXSER_HAS2 }, - { "CI-134 series", 4, }, +/* 5*/ { }, + { }, + { }, { "CP-132 series", 2, }, { "CP-114 series", 4, }, /*10*/ { "CT-114 series", 4, }, @@ -172,15 +162,12 @@ static const struct pci_device_id mxser_pcibrds[] = { }; MODULE_DEVICE_TABLE(pci, mxser_pcibrds); -static unsigned long ioaddr[MXSER_BOARDS]; static int ttymajor = MXSERMAJOR; /* Variables for insmod */ MODULE_AUTHOR("Casper Yang"); MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); -module_param_hw_array(ioaddr, ulong, ioport, NULL, 0); -MODULE_PARM_DESC(ioaddr, "ISA io addresses to look for a moxa board"); module_param(ttymajor, int, 0); MODULE_LICENSE("GPL"); @@ -300,7 +287,6 @@ static void mxser_enable_must_enchance_mode(unsigned long baseio) outb(oldlcr, baseio + UART_LCR); } -#ifdef CONFIG_PCI static void mxser_disable_must_enchance_mode(unsigned long baseio) { u8 oldlcr; @@ -315,7 +301,6 @@ static void mxser_disable_must_enchance_mode(unsigned long baseio) outb(efr, baseio + MOXA_MUST_EFR_REGISTER); outb(oldlcr, baseio + UART_LCR); } -#endif static void mxser_set_must_xon1_value(unsigned long baseio, u8 value) { @@ -387,7 +372,6 @@ static void mxser_set_must_enum_value(unsigned long baseio, u8 value) outb(oldlcr, baseio + UART_LCR); } -#ifdef CONFIG_PCI static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) { u8 oldlcr; @@ -404,7 +388,6 @@ static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) *pId = inb(baseio + MOXA_MUST_HWID_REGISTER); outb(oldlcr, baseio + UART_LCR); } -#endif static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio) { @@ -483,7 +466,6 @@ static void mxser_disable_must_rx_software_flow_control(unsigned long baseio) outb(oldlcr, baseio + UART_LCR); } -#ifdef CONFIG_PCI static int CheckIsMoxaMust(unsigned long io) { u8 oldmcr, hwid; @@ -506,7 +488,6 @@ static int CheckIsMoxaMust(unsigned long io) } return MOXA_OTHER_UART; } -#endif static void process_txrx_fifo(struct mxser_port *info) { @@ -1398,109 +1379,6 @@ static int mxser_tiocmset(struct tty_struct *tty, return 0; } -static int __init mxser_program_mode(int port) -{ - int id, i, j, n; - - outb(0, port); - outb(0, port); - outb(0, port); - (void)inb(port); - (void)inb(port); - outb(0, port); - (void)inb(port); - - id = inb(port + 1) & 0x1F; - if ((id != C168_ASIC_ID) && - (id != C104_ASIC_ID) && - (id != C102_ASIC_ID) && - (id != CI132_ASIC_ID) && - (id != CI134_ASIC_ID) && - (id != CI104J_ASIC_ID)) - return -1; - for (i = 0, j = 0; i < 4; i++) { - n = inb(port + 2); - if (n == 'M') { - j = 1; - } else if ((j == 1) && (n == 1)) { - j = 2; - break; - } else - j = 0; - } - if (j != 2) - id = -2; - return id; -} - -static void __init mxser_normal_mode(int port) -{ - int i, n; - - outb(0xA5, port + 1); - outb(0x80, port + 3); - outb(12, port + 0); /* 9600 bps */ - outb(0, port + 1); - outb(0x03, port + 3); /* 8 data bits */ - outb(0x13, port + 4); /* loop back mode */ - for (i = 0; i < 16; i++) { - n = inb(port + 5); - if ((n & 0x61) == 0x60) - break; - if ((n & 1) == 1) - (void)inb(port); - } - outb(0x00, port + 4); -} - -#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ -#define CHIP_DO 0x02 /* Serial Data Output in Eprom */ -#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ -#define CHIP_DI 0x08 /* Serial Data Input in Eprom */ -#define EN_CCMD 0x000 /* Chip's command register */ -#define EN0_RSARLO 0x008 /* Remote start address reg 0 */ -#define EN0_RSARHI 0x009 /* Remote start address reg 1 */ -#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ -#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ -#define EN0_DCFG 0x00E /* Data configuration reg WR */ -#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ -#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ -#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ -static int __init mxser_read_register(int port, unsigned short *regs) -{ - int i, k, value, id; - unsigned int j; - - id = mxser_program_mode(port); - if (id < 0) - return id; - for (i = 0; i < 14; i++) { - k = (i & 0x3F) | 0x180; - for (j = 0x100; j > 0; j >>= 1) { - outb(CHIP_CS, port); - if (k & j) { - outb(CHIP_CS | CHIP_DO, port); - outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ - } else { - outb(CHIP_CS, port); - outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ - } - } - (void)inb(port); - value = 0; - for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { - outb(CHIP_CS, port); - outb(CHIP_CS | CHIP_SK, port); - if (inb(port) & CHIP_DI) - value |= j; - } - regs[i] = value; - outb(0, port); - } - mxser_normal_mode(port); - return id; -} - static int mxser_ioctl_special(unsigned int cmd, void __user *argp) { struct mxser_port *ip; @@ -2346,37 +2224,6 @@ static const struct tty_port_operations mxser_port_ops = { * The MOXA Smartio/Industio serial driver boot-time initialization code! */ -static bool allow_overlapping_vector; -module_param(allow_overlapping_vector, bool, S_IRUGO); -MODULE_PARM_DESC(allow_overlapping_vector, "whether we allow ISA cards to be configured such that vector overlabs IO ports (default=no)"); - -static bool mxser_overlapping_vector(struct mxser_board *brd) -{ - return allow_overlapping_vector && - brd->vector >= brd->ports[0].ioaddr && - brd->vector < brd->ports[0].ioaddr + 8 * brd->info->nports; -} - -static int mxser_request_vector(struct mxser_board *brd) -{ - if (mxser_overlapping_vector(brd)) - return 0; - return request_region(brd->vector, 1, "mxser(vector)") ? 0 : -EIO; -} - -static void mxser_release_vector(struct mxser_board *brd) -{ - if (mxser_overlapping_vector(brd)) - return; - release_region(brd->vector, 1); -} - -static void mxser_release_ISA_res(struct mxser_board *brd) -{ - release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); - mxser_release_vector(brd); -} - static int mxser_initbrd(struct mxser_board *brd) { struct mxser_port *info; @@ -2439,125 +2286,9 @@ static void mxser_board_remove(struct mxser_board *brd) free_irq(brd->irq, brd); } -static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) -{ - int id, i, bits, ret; - unsigned short regs[16], irq; - unsigned char scratch, scratch2; - - brd->chip_flag = MOXA_OTHER_UART; - - id = mxser_read_register(cap, regs); - switch (id) { - case C168_ASIC_ID: - brd->info = &mxser_cards[0]; - break; - case C104_ASIC_ID: - brd->info = &mxser_cards[1]; - break; - case CI104J_ASIC_ID: - brd->info = &mxser_cards[2]; - break; - case C102_ASIC_ID: - brd->info = &mxser_cards[5]; - break; - case CI132_ASIC_ID: - brd->info = &mxser_cards[6]; - break; - case CI134_ASIC_ID: - brd->info = &mxser_cards[7]; - break; - default: - return 0; - } - - irq = 0; - /* some ISA cards have 2 ports, but we want to see them as 4-port (why?) - Flag-hack checks if configuration should be read as 2-port here. */ - if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - if (irq != (regs[9] & 0xFF00)) - goto err_irqconflict; - } else if (brd->info->nports == 4) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - irq = irq | (irq >> 8); - if (irq != regs[9]) - goto err_irqconflict; - } else if (brd->info->nports == 8) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - irq = irq | (irq >> 8); - if ((irq != regs[9]) || (irq != regs[10])) - goto err_irqconflict; - } - - if (!irq) { - printk(KERN_ERR "mxser: interrupt number unset\n"); - return -EIO; - } - brd->irq = ((int)(irq & 0xF000) >> 12); - for (i = 0; i < 8; i++) - brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8; - if ((regs[12] & 0x80) == 0) { - printk(KERN_ERR "mxser: invalid interrupt vector\n"); - return -EIO; - } - brd->vector = (int)regs[11]; /* interrupt vector */ - if (id == 1) - brd->vector_mask = 0x00FF; - else - brd->vector_mask = 0x000F; - for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { - if (regs[12] & bits) { - brd->ports[i].baud_base = 921600; - brd->ports[i].max_baud = 921600; - } else { - brd->ports[i].baud_base = 115200; - brd->ports[i].max_baud = 115200; - } - } - scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); - outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); - outb(0, cap + UART_EFR); /* EFR is the same as FCR */ - outb(scratch2, cap + UART_LCR); - outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); - scratch = inb(cap + UART_IIR); - - if (scratch & 0xC0) - brd->uart_type = PORT_16550A; - else - brd->uart_type = PORT_16450; - if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports, - "mxser(IO)")) { - printk(KERN_ERR "mxser: can't request ports I/O region: " - "0x%.8lx-0x%.8lx\n", - brd->ports[0].ioaddr, brd->ports[0].ioaddr + - 8 * brd->info->nports - 1); - return -EIO; - } - - ret = mxser_request_vector(brd); - if (ret) { - release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); - printk(KERN_ERR "mxser: can't request interrupt vector region: " - "0x%.8lx-0x%.8lx\n", - brd->ports[0].ioaddr, brd->ports[0].ioaddr + - 8 * brd->info->nports - 1); - return ret; - } - return brd->info->nports; - -err_irqconflict: - printk(KERN_ERR "mxser: invalid interrupt number\n"); - return -EIO; -} - static int mxser_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { -#ifdef CONFIG_PCI struct mxser_board *brd; unsigned int i, j; unsigned long ioaddress; @@ -2673,14 +2404,10 @@ err_dis: pci_disable_device(pdev); err: return retval; -#else - return -ENODEV; -#endif } static void mxser_remove(struct pci_dev *pdev) { -#ifdef CONFIG_PCI struct mxser_board *brd = pci_get_drvdata(pdev); mxser_board_remove(brd); @@ -2689,7 +2416,6 @@ static void mxser_remove(struct pci_dev *pdev) pci_release_region(pdev, 3); pci_disable_device(pdev); brd->info = NULL; -#endif } static struct pci_driver mxser_driver = { @@ -2701,9 +2427,6 @@ static struct pci_driver mxser_driver = { static int __init mxser_module_init(void) { - struct mxser_board *brd; - struct device *tty_dev; - unsigned int b, i, m; int retval; mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); @@ -2731,57 +2454,10 @@ static int __init mxser_module_init(void) goto err_put; } - /* Start finding ISA boards here */ - for (m = 0, b = 0; b < MXSER_BOARDS; b++) { - if (!ioaddr[b]) - continue; - - brd = &mxser_boards[m]; - retval = mxser_get_ISA_conf(ioaddr[b], brd); - if (retval <= 0) { - brd->info = NULL; - continue; - } - - printk(KERN_INFO "mxser: found MOXA %s board (CAP=0x%lx)\n", - brd->info->name, ioaddr[b]); - - /* mxser_initbrd will hook ISR. */ - if (mxser_initbrd(brd) < 0) { - mxser_release_ISA_res(brd); - brd->info = NULL; - continue; - } - - brd->idx = m * MXSER_PORTS_PER_BOARD; - for (i = 0; i < brd->info->nports; i++) { - tty_dev = tty_port_register_device(&brd->ports[i].port, - mxvar_sdriver, brd->idx + i, NULL); - if (IS_ERR(tty_dev)) { - for (; i > 0; i--) - tty_unregister_device(mxvar_sdriver, - brd->idx + i - 1); - for (i = 0; i < brd->info->nports; i++) - tty_port_destroy(&brd->ports[i].port); - free_irq(brd->irq, brd); - mxser_release_ISA_res(brd); - brd->info = NULL; - break; - } - } - if (brd->info == NULL) - continue; - - m++; - } - retval = pci_register_driver(&mxser_driver); if (retval) { printk(KERN_ERR "mxser: can't register pci driver\n"); - if (!m) { - retval = -ENODEV; - goto err_unr; - } /* else: we have some ISA cards under control */ + goto err_unr; } return 0; @@ -2794,19 +2470,9 @@ err_put: static void __exit mxser_module_exit(void) { - unsigned int i; - pci_unregister_driver(&mxser_driver); - - for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */ - if (mxser_boards[i].info != NULL) - mxser_board_remove(&mxser_boards[i]); tty_unregister_driver(mxvar_sdriver); put_tty_driver(mxvar_sdriver); - - for (i = 0; i < MXSER_BOARDS; i++) - if (mxser_boards[i].info != NULL) - mxser_release_ISA_res(&mxser_boards[i]); } module_init(mxser_module_init); -- cgit v1.2.3