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Diffstat (limited to 'arch/mips/txx9/rbtx4927/irq.c')
-rw-r--r--arch/mips/txx9/rbtx4927/irq.c223
1 files changed, 112 insertions, 111 deletions
diff --git a/arch/mips/txx9/rbtx4927/irq.c b/arch/mips/txx9/rbtx4927/irq.c
index cd748a93032..3f48292c9c6 100644
--- a/arch/mips/txx9/rbtx4927/irq.c
+++ b/arch/mips/txx9/rbtx4927/irq.c
@@ -2,7 +2,7 @@
* Toshiba RBTX4927 specific interrupt handlers
*
* Author: MontaVista Software, Inc.
- * source@mvista.com
+ * source@mvista.com
*
* Copyright 2001-2002 MontaVista Software Inc.
*
@@ -27,146 +27,147 @@
* 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
-*/
+ * I8259A_IRQ_BASE+00
+ * I8259A_IRQ_BASE+01 PS2/Keyboard
+ * I8259A_IRQ_BASE+02 Cascade RBTX4927-ISA (irqs 8-15)
+ * I8259A_IRQ_BASE+03
+ * I8259A_IRQ_BASE+04
+ * I8259A_IRQ_BASE+05
+ * I8259A_IRQ_BASE+06
+ * I8259A_IRQ_BASE+07
+ * I8259A_IRQ_BASE+08
+ * I8259A_IRQ_BASE+09
+ * I8259A_IRQ_BASE+10
+ * I8259A_IRQ_BASE+11
+ * I8259A_IRQ_BASE+12 PS2/Mouse (not supported at this time)
+ * I8259A_IRQ_BASE+13
+ * I8259A_IRQ_BASE+14 IDE
+ * I8259A_IRQ_BASE+15
+ *
+ * MIPS_CPU_IRQ_BASE+00 Software 0
+ * MIPS_CPU_IRQ_BASE+01 Software 1
+ * MIPS_CPU_IRQ_BASE+02 Cascade TX4927-CP0
+ * MIPS_CPU_IRQ_BASE+03 Multiplexed -- do not use
+ * MIPS_CPU_IRQ_BASE+04 Multiplexed -- do not use
+ * MIPS_CPU_IRQ_BASE+05 Multiplexed -- do not use
+ * MIPS_CPU_IRQ_BASE+06 Multiplexed -- do not use
+ * MIPS_CPU_IRQ_BASE+07 CPU TIMER
+ *
+ * TXX9_IRQ_BASE+00
+ * TXX9_IRQ_BASE+01
+ * TXX9_IRQ_BASE+02
+ * TXX9_IRQ_BASE+03 Cascade RBTX4927-IOC
+ * TXX9_IRQ_BASE+04
+ * TXX9_IRQ_BASE+05 RBTX4927 RTL-8019AS ethernet
+ * TXX9_IRQ_BASE+06
+ * TXX9_IRQ_BASE+07
+ * TXX9_IRQ_BASE+08 TX4927 SerialIO Channel 0
+ * TXX9_IRQ_BASE+09 TX4927 SerialIO Channel 1
+ * TXX9_IRQ_BASE+10
+ * TXX9_IRQ_BASE+11
+ * TXX9_IRQ_BASE+12
+ * TXX9_IRQ_BASE+13
+ * TXX9_IRQ_BASE+14
+ * TXX9_IRQ_BASE+15
+ * TXX9_IRQ_BASE+16 TX4927 PCI PCI-C
+ * TXX9_IRQ_BASE+17
+ * TXX9_IRQ_BASE+18
+ * TXX9_IRQ_BASE+19
+ * TXX9_IRQ_BASE+20
+ * TXX9_IRQ_BASE+21
+ * TXX9_IRQ_BASE+22 TX4927 PCI PCI-ERR
+ * TXX9_IRQ_BASE+23 TX4927 PCI PCI-PMA (not used)
+ * TXX9_IRQ_BASE+24
+ * TXX9_IRQ_BASE+25
+ * TXX9_IRQ_BASE+26
+ * TXX9_IRQ_BASE+27
+ * TXX9_IRQ_BASE+28
+ * TXX9_IRQ_BASE+29
+ * TXX9_IRQ_BASE+30
+ * TXX9_IRQ_BASE+31
+ *
+ * RBTX4927_IRQ_IOC+00 FPCIB0 PCI-D (SouthBridge)
+ * RBTX4927_IRQ_IOC+01 FPCIB0 PCI-C (SouthBridge)
+ * RBTX4927_IRQ_IOC+02 FPCIB0 PCI-B (SouthBridge/IDE/pin=1,INTR)
+ * RBTX4927_IRQ_IOC+03 FPCIB0 PCI-A (SouthBridge/USB/pin=4)
+ * RBTX4927_IRQ_IOC+04
+ * RBTX4927_IRQ_IOC+05
+ * RBTX4927_IRQ_IOC+06
+ * RBTX4927_IRQ_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 <linux/init.h>
#include <linux/types.h>
#include <linux/interrupt.h>
+#include <linux/irq.h>
#include <asm/io.h>
#include <asm/mipsregs.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/rbtx4927.h>
-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);
+ if (unlikely(!level3))
+ return -1;
+ return RBTX4927_IRQ_IOC + __fls8(level3);
}
-static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq)
+static void toshiba_rbtx4927_irq_ioc_enable(struct irq_data *d)
{
unsigned char v;
v = readb(rbtx4927_imask_addr);
- v |= (1 << (irq - RBTX4927_IRQ_IOC));
+ v |= (1 << (d->irq - RBTX4927_IRQ_IOC));
writeb(v, rbtx4927_imask_addr);
}
-static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq)
+static void toshiba_rbtx4927_irq_ioc_disable(struct irq_data *d)
{
unsigned char v;
v = readb(rbtx4927_imask_addr);
- v &= ~(1 << (irq - RBTX4927_IRQ_IOC));
+ v &= ~(1 << (d->irq - RBTX4927_IRQ_IOC));
writeb(v, rbtx4927_imask_addr);
mmiowb();
}
+#define TOSHIBA_RBTX4927_IOC_NAME "RBTX4927-IOC"
+static struct irq_chip toshiba_rbtx4927_irq_ioc_type = {
+ .name = TOSHIBA_RBTX4927_IOC_NAME,
+ .irq_mask = toshiba_rbtx4927_irq_ioc_disable,
+ .irq_unmask = toshiba_rbtx4927_irq_ioc_enable,
+};
+
+static void __init toshiba_rbtx4927_irq_ioc_init(void)
+{
+ int i;
+
+ /* mask all IOC interrupts */
+ writeb(0, rbtx4927_imask_addr);
+ /* clear SoftInt interrupts */
+ writeb(0, rbtx4927_softint_addr);
+
+ for (i = RBTX4927_IRQ_IOC;
+ i < RBTX4927_IRQ_IOC + RBTX4927_NR_IRQ_IOC; i++)
+ irq_set_chip_and_handler(i, &toshiba_rbtx4927_irq_ioc_type,
+ handle_level_irq);
+ irq_set_chained_handler(RBTX4927_IRQ_IOCINT, handle_simple_irq);
+}
static int rbtx4927_irq_dispatch(int pending)
{
@@ -193,5 +194,5 @@ void __init rbtx4927_irq_setup(void)
tx4927_irq_init();
toshiba_rbtx4927_irq_ioc_init();
/* Onboard 10M Ether: High Active */
- set_irq_type(RBTX4927_RTL_8019_IRQ, IRQF_TRIGGER_HIGH);
+ irq_set_irq_type(RBTX4927_RTL_8019_IRQ, IRQF_TRIGGER_HIGH);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-09 08:03:35 +0000