static void scc_shutdown_port(void *ptr) { struct scc_port *port = ptr; port->gs.port.flags &= ~ GS_ACTIVE; if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { scc_setsignals (port, 0, 0); } }
static int scc_open (struct tty_struct * tty, struct file * filp) { int line = tty->index; int retval; struct scc_port *port = &scc_ports[line]; int i, channel = port->channel; unsigned long flags; SCC_ACCESS_INIT(port); #if defined(CONFIG_MVME162_SCC) || defined(CONFIG_MVME147_SCC) static const struct { unsigned reg, val; } mvme_init_tab[] = { /* Values for MVME162 and MVME147 */ /* no parity, 1 stop bit, async, 1:16 */ { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, /* parity error is special cond, ints disabled, no DMA */ { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, /* Rx 8 bits/char, no auto enable, Rx off */ { RX_CTRL_REG, RCR_CHSIZE_8 }, /* DTR off, Tx 8 bits/char, RTS off, Tx off */ { TX_CTRL_REG, TCR_CHSIZE_8 }, /* special features off */ { AUX2_CTRL_REG, 0 }, { CLK_CTRL_REG, CCR_RXCLK_BRG | CCR_TXCLK_BRG }, { DPLL_CTRL_REG, DCR_BRG_ENAB | DCR_BRG_USE_PCLK }, /* Start Rx */ { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, /* Start Tx */ { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, /* Ext/Stat ints: DCD only */ { INT_CTRL_REG, ICR_ENAB_DCD_INT }, /* Reset Ext/Stat ints */ { COMMAND_REG, CR_EXTSTAT_RESET }, /* ...again */ { COMMAND_REG, CR_EXTSTAT_RESET }, }; #endif #if defined(CONFIG_BVME6000_SCC) static const struct { unsigned reg, val; } bvme_init_tab[] = { /* Values for BVME6000 */ /* no parity, 1 stop bit, async, 1:16 */ { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, /* parity error is special cond, ints disabled, no DMA */ { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, /* Rx 8 bits/char, no auto enable, Rx off */ { RX_CTRL_REG, RCR_CHSIZE_8 }, /* DTR off, Tx 8 bits/char, RTS off, Tx off */ { TX_CTRL_REG, TCR_CHSIZE_8 }, /* special features off */ { AUX2_CTRL_REG, 0 }, { CLK_CTRL_REG, CCR_RTxC_XTAL | CCR_RXCLK_BRG | CCR_TXCLK_BRG }, { DPLL_CTRL_REG, DCR_BRG_ENAB }, /* Start Rx */ { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, /* Start Tx */ { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, /* Ext/Stat ints: DCD only */ { INT_CTRL_REG, ICR_ENAB_DCD_INT }, /* Reset Ext/Stat ints */ { COMMAND_REG, CR_EXTSTAT_RESET }, /* ...again */ { COMMAND_REG, CR_EXTSTAT_RESET }, }; #endif if (!(port->gs.port.flags & ASYNC_INITIALIZED)) { local_irq_save(flags); #if defined(CONFIG_MVME147_SCC) || defined(CONFIG_MVME162_SCC) if (MACH_IS_MVME147 || MACH_IS_MVME16x) { for (i = 0; i < ARRAY_SIZE(mvme_init_tab); ++i) SCCwrite(mvme_init_tab[i].reg, mvme_init_tab[i].val); } #endif #if defined(CONFIG_BVME6000_SCC) if (MACH_IS_BVME6000) { for (i = 0; i < ARRAY_SIZE(bvme_init_tab); ++i) SCCwrite(bvme_init_tab[i].reg, bvme_init_tab[i].val); } #endif /* remember status register for detection of DCD and CTS changes */ scc_last_status_reg[channel] = SCCread(STATUS_REG); port->c_dcd = 0; /* Prevent initial 1->0 interrupt */ scc_setsignals (port, 1,1); local_irq_restore(flags); } tty->driver_data = port; port->gs.port.tty = tty; port->gs.port.count++; retval = gs_init_port(&port->gs); if (retval) { port->gs.port.count--; return retval; } port->gs.port.flags |= GS_ACTIVE; retval = gs_block_til_ready(port, filp); if (retval) { port->gs.port.count--; return retval; } port->c_dcd = tty_port_carrier_raised(&port->gs.port); scc_enable_rx_interrupts(port); return 0; }
static int scc_open (struct tty_struct * tty, struct file * filp) { int line = MINOR(tty->device) - SCC_MINOR_BASE; int retval; struct scc_port *port = &scc_ports[line]; int i, channel = port->channel; unsigned long flags; SCC_ACCESS_INIT(port); #if defined(CONFIG_MVME162_SCC) || defined(CONFIG_MVME147_SCC) static const struct { unsigned reg, val; } mvme_init_tab[] = { /* Values for MVME162 and MVME147 */ /* no parity, 1 stop bit, async, 1:16 */ { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, /* parity error is special cond, ints disabled, no DMA */ { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, /* Rx 8 bits/char, no auto enable, Rx off */ { RX_CTRL_REG, RCR_CHSIZE_8 }, /* DTR off, Tx 8 bits/char, RTS off, Tx off */ { TX_CTRL_REG, TCR_CHSIZE_8 }, /* special features off */ { AUX2_CTRL_REG, 0 }, { CLK_CTRL_REG, CCR_RXCLK_BRG | CCR_TXCLK_BRG }, { DPLL_CTRL_REG, DCR_BRG_ENAB | DCR_BRG_USE_PCLK }, /* Start Rx */ { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, /* Start Tx */ { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, /* Ext/Stat ints: DCD only */ { INT_CTRL_REG, ICR_ENAB_DCD_INT }, /* Reset Ext/Stat ints */ { COMMAND_REG, CR_EXTSTAT_RESET }, /* ...again */ { COMMAND_REG, CR_EXTSTAT_RESET }, }; #endif #if defined(CONFIG_BVME6000_SCC) static const struct { unsigned reg, val; } bvme_init_tab[] = { /* Values for BVME6000 */ /* no parity, 1 stop bit, async, 1:16 */ { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, /* parity error is special cond, ints disabled, no DMA */ { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, /* Rx 8 bits/char, no auto enable, Rx off */ { RX_CTRL_REG, RCR_CHSIZE_8 }, /* DTR off, Tx 8 bits/char, RTS off, Tx off */ { TX_CTRL_REG, TCR_CHSIZE_8 }, /* special features off */ { AUX2_CTRL_REG, 0 }, { CLK_CTRL_REG, CCR_RTxC_XTAL | CCR_RXCLK_BRG | CCR_TXCLK_BRG }, { DPLL_CTRL_REG, DCR_BRG_ENAB }, /* Start Rx */ { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, /* Start Tx */ { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, /* Ext/Stat ints: DCD only */ { INT_CTRL_REG, ICR_ENAB_DCD_INT }, /* Reset Ext/Stat ints */ { COMMAND_REG, CR_EXTSTAT_RESET }, /* ...again */ { COMMAND_REG, CR_EXTSTAT_RESET }, }; #endif if (!(port->gs.flags & ASYNC_INITIALIZED)) { save_flags(flags); cli(); #if defined(CONFIG_MVME147_SCC) || defined(CONFIG_MVME162_SCC) if (MACH_IS_MVME147 || MACH_IS_MVME16x) { for (i=0; i<sizeof(mvme_init_tab)/sizeof(*mvme_init_tab); ++i) SCCwrite(mvme_init_tab[i].reg, mvme_init_tab[i].val); } #endif #if defined(CONFIG_BVME6000_SCC) if (MACH_IS_BVME6000) { for (i=0; i<sizeof(bvme_init_tab)/sizeof(*bvme_init_tab); ++i) SCCwrite(bvme_init_tab[i].reg, bvme_init_tab[i].val); } #endif /* remember status register for detection of DCD and CTS changes */ scc_last_status_reg[channel] = SCCread(STATUS_REG); port->c_dcd = 0; /* Prevent initial 1->0 interrupt */ scc_setsignals (port, 1,1); restore_flags(flags); } tty->driver_data = port; port->gs.tty = tty; port->gs.count++; retval = gs_init_port(&port->gs); if (retval) { port->gs.count--; return retval; } port->gs.flags |= GS_ACTIVE; if (port->gs.count == 1) { MOD_INC_USE_COUNT; } retval = gs_block_til_ready(port, filp); if (retval) { MOD_DEC_USE_COUNT; port->gs.count--; return retval; } if ((port->gs.count == 1) && (port->gs.flags & ASYNC_SPLIT_TERMIOS)) { if (tty->driver.subtype == SERIAL_TYPE_NORMAL) *tty->termios = port->gs.normal_termios; else *tty->termios = port->gs.callout_termios; scc_set_real_termios (port); } port->gs.session = current->session; port->gs.pgrp = current->pgrp; port->c_dcd = scc_get_CD (port); scc_enable_rx_interrupts(port); return 0; }