/* * Toshiba RBTX4927 specific interrupt handlers * * Author: MontaVista Software, Inc. * source@mvista.com * * Copyright 2001-2002 MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ /* IRQ Device 00 RBTX4927-ISA/00 01 RBTX4927-ISA/01 PS2/Keyboard 02 RBTX4927-ISA/02 Cascade RBTX4927-ISA (irqs 8-15) 03 RBTX4927-ISA/03 04 RBTX4927-ISA/04 05 RBTX4927-ISA/05 06 RBTX4927-ISA/06 07 RBTX4927-ISA/07 08 RBTX4927-ISA/08 09 RBTX4927-ISA/09 10 RBTX4927-ISA/10 11 RBTX4927-ISA/11 12 RBTX4927-ISA/12 PS2/Mouse (not supported at this time) 13 RBTX4927-ISA/13 14 RBTX4927-ISA/14 IDE 15 RBTX4927-ISA/15 16 TX4927-CP0/00 Software 0 17 TX4927-CP0/01 Software 1 18 TX4927-CP0/02 Cascade TX4927-CP0 19 TX4927-CP0/03 Multiplexed -- do not use 20 TX4927-CP0/04 Multiplexed -- do not use 21 TX4927-CP0/05 Multiplexed -- do not use 22 TX4927-CP0/06 Multiplexed -- do not use 23 TX4927-CP0/07 CPU TIMER 24 TX4927-PIC/00 25 TX4927-PIC/01 26 TX4927-PIC/02 27 TX4927-PIC/03 Cascade RBTX4927-IOC 28 TX4927-PIC/04 29 TX4927-PIC/05 RBTX4927 RTL-8019AS ethernet 30 TX4927-PIC/06 31 TX4927-PIC/07 32 TX4927-PIC/08 TX4927 SerialIO Channel 0 33 TX4927-PIC/09 TX4927 SerialIO Channel 1 34 TX4927-PIC/10 35 TX4927-PIC/11 36 TX4927-PIC/12 37 TX4927-PIC/13 38 TX4927-PIC/14 39 TX4927-PIC/15 40 TX4927-PIC/16 TX4927 PCI PCI-C 41 TX4927-PIC/17 42 TX4927-PIC/18 43 TX4927-PIC/19 44 TX4927-PIC/20 45 TX4927-PIC/21 46 TX4927-PIC/22 TX4927 PCI PCI-ERR 47 TX4927-PIC/23 TX4927 PCI PCI-PMA (not used) 48 TX4927-PIC/24 49 TX4927-PIC/25 50 TX4927-PIC/26 51 TX4927-PIC/27 52 TX4927-PIC/28 53 TX4927-PIC/29 54 TX4927-PIC/30 55 TX4927-PIC/31 56 RBTX4927-IOC/00 FPCIB0 PCI-D PJ4/A PJ5/B SB/C PJ6/D PJ7/A (SouthBridge/NotUsed) [RTL-8139=PJ4] 57 RBTX4927-IOC/01 FPCIB0 PCI-C PJ4/D PJ5/A SB/B PJ6/C PJ7/D (SouthBridge/NotUsed) [RTL-8139=PJ5] 58 RBTX4927-IOC/02 FPCIB0 PCI-B PJ4/C PJ5/D SB/A PJ6/B PJ7/C (SouthBridge/IDE/pin=1,INTR) [RTL-8139=NotSupported] 59 RBTX4927-IOC/03 FPCIB0 PCI-A PJ4/B PJ5/C SB/D PJ6/A PJ7/B (SouthBridge/USB/pin=4) [RTL-8139=PJ6] 60 RBTX4927-IOC/04 61 RBTX4927-IOC/05 62 RBTX4927-IOC/06 63 RBTX4927-IOC/07 NOTES: SouthBridge/INTR is mapped to SouthBridge/A=PCI-B/#58 SouthBridge/ISA/pin=0 no pci irq used by this device SouthBridge/IDE/pin=1 no pci irq used by this device, using INTR via ISA IRQ14 SouthBridge/USB/pin=4 using pci irq SouthBridge/D=PCI-A=#59 SouthBridge/PMC/pin=0 no pci irq used by this device SuperIO/PS2/Keyboard, using INTR via ISA IRQ1 SuperIO/PS2/Mouse, using INTR via ISA IRQ12 (mouse not currently supported) JP7 is not bus master -- do NOT use -- only 4 pci bus master's allowed -- SouthBridge, JP4, JP5, JP6 */ #include #include #include #include #include #include #include static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq); static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq); #define TOSHIBA_RBTX4927_IOC_NAME "RBTX4927-IOC" static struct irq_chip toshiba_rbtx4927_irq_ioc_type = { .name = TOSHIBA_RBTX4927_IOC_NAME, .ack = toshiba_rbtx4927_irq_ioc_disable, .mask = toshiba_rbtx4927_irq_ioc_disable, .mask_ack = toshiba_rbtx4927_irq_ioc_disable, .unmask = toshiba_rbtx4927_irq_ioc_enable, }; static int toshiba_rbtx4927_irq_nested(int sw_irq) { u8 level3; level3 = readb(rbtx4927_imstat_addr) & 0x1f; if (level3) sw_irq = RBTX4927_IRQ_IOC + fls(level3) - 1; return (sw_irq); } static void __init toshiba_rbtx4927_irq_ioc_init(void) { int i; for (i = RBTX4927_IRQ_IOC; i < RBTX4927_IRQ_IOC + RBTX4927_NR_IRQ_IOC; i++) set_irq_chip_and_handler(i, &toshiba_rbtx4927_irq_ioc_type, handle_level_irq); set_irq_chained_handler(RBTX4927_IRQ_IOCINT, handle_simple_irq); } static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq) { unsigned char v; v = readb(rbtx4927_imask_addr); v |= (1 << (irq - RBTX4927_IRQ_IOC)); writeb(v, rbtx4927_imask_addr); } static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq) { unsigned char v; v = readb(rbtx4927_imask_addr); v &= ~(1 << (irq - RBTX4927_IRQ_IOC)); writeb(v, rbtx4927_imask_addr); mmiowb(); } static int rbtx4927_irq_dispatch(int pending) { int irq; if (pending & STATUSF_IP7) /* cpu timer */ irq = MIPS_CPU_IRQ_BASE + 7; else if (pending & STATUSF_IP2) { /* tx4927 pic */ irq = txx9_irq(); if (irq == RBTX4927_IRQ_IOCINT) irq = toshiba_rbtx4927_irq_nested(irq); } else if (pending & STATUSF_IP0) /* user line 0 */ irq = MIPS_CPU_IRQ_BASE + 0; else if (pending & STATUSF_IP1) /* user line 1 */ irq = MIPS_CPU_IRQ_BASE + 1; else irq = -1; return irq; } void __init rbtx4927_irq_setup(void) { txx9_irq_dispatch = rbtx4927_irq_dispatch; tx4927_irq_init(); toshiba_rbtx4927_irq_ioc_init(); /* Onboard 10M Ether: High Active */ set_irq_type(RBTX4927_RTL_8019_IRQ, IRQF_TRIGGER_HIGH); }