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-rw-r--r--arch/powerpc/Kconfig10
-rw-r--r--arch/powerpc/platforms/embedded6xx/Kconfig5
-rw-r--r--arch/powerpc/platforms/pseries/setup.c19
-rw-r--r--arch/powerpc/sysdev/Makefile1
-rw-r--r--arch/powerpc/sysdev/i8259.c (renamed from arch/ppc/syslib/i8259.c)65
-rw-r--r--arch/ppc/Kconfig14
-rw-r--r--arch/ppc/platforms/85xx/mpc85xx_cds_common.c5
-rw-r--r--arch/ppc/platforms/chrp_setup.c4
-rw-r--r--arch/ppc/platforms/lopec.c6
-rw-r--r--arch/ppc/platforms/mvme5100.c6
-rw-r--r--arch/ppc/platforms/pplus.c5
-rw-r--r--arch/ppc/platforms/prep_setup.c8
-rw-r--r--arch/ppc/platforms/radstone_ppc7d.c6
-rw-r--r--arch/ppc/platforms/sandpoint.c10
-rw-r--r--arch/ppc/syslib/Makefile19
-rw-r--r--arch/ppc64/Kconfig5
-rw-r--r--arch/ppc64/kernel/Makefile2
-rw-r--r--arch/ppc64/kernel/i8259.c177
18 files changed, 97 insertions, 270 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a3451d5bb78..9f279e0d84f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -275,11 +275,13 @@ endchoice
config PPC_PSERIES
depends on PPC_MULTIPLATFORM && PPC64
bool " IBM pSeries & new (POWER5-based) iSeries"
+ select PPC_I8259
default y
config PPC_CHRP
bool " Common Hardware Reference Platform (CHRP) based machines"
depends on PPC_MULTIPLATFORM && PPC32
+ select PPC_I8259
select PPC_INDIRECT_PCI
default y
@@ -298,6 +300,7 @@ config PPC_PMAC64
config PPC_PREP
bool " PowerPC Reference Platform (PReP) based machines"
depends on PPC_MULTIPLATFORM && PPC32
+ select PPC_I8259
select PPC_INDIRECT_PCI
default y
@@ -628,6 +631,7 @@ menu "Bus options"
config ISA
bool "Support for ISA-bus hardware"
depends on PPC_PREP || PPC_CHRP
+ select PPC_I8259
help
Find out whether you have ISA slots on your motherboard. ISA is the
name of a bus system, i.e. the way the CPU talks to the other stuff
@@ -640,6 +644,11 @@ config GENERIC_ISA_DMA
depends on PPC64 || POWER4 || 6xx && !CPM2
default y
+config PPC_I8259
+ bool
+ default y if 85xx
+ default n
+
config PPC_INDIRECT_PCI
bool
depends on PCI
@@ -679,6 +688,7 @@ config MPC83xx_PCI2
config PCI_QSPAN
bool "QSpan PCI"
depends on !4xx && !CPM2 && 8xx
+ select PPC_I8259
help
Say Y here if you have a system based on a Motorola 8xx-series
embedded processor with a QSPAN PCI interface, otherwise say N.
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 784b41e1946..81250090f98 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -48,6 +48,7 @@ config EV64260
config LOPEC
bool "Motorola-LoPEC"
+ select PPC_I8259
config MVME5100
bool "Motorola-MVME5100"
@@ -55,6 +56,7 @@ config MVME5100
config PPLUS
bool "Motorola-PowerPlus"
+ select PPC_I8259
select PPC_INDIRECT_PCI
config PRPMC750
@@ -67,12 +69,14 @@ config PRPMC800
config SANDPOINT
bool "Motorola-Sandpoint"
+ select PPC_I8259
help
Select SANDPOINT if configuring for a Motorola Sandpoint X3
(any flavor).
config RADSTONE_PPC7D
bool "Radstone Technology PPC7D board"
+ select PPC_I8259
config PAL4
bool "SBS-Palomar4"
@@ -307,6 +311,7 @@ config HARRIER_STORE_GATHERING
config MVME5100_IPMC761_PRESENT
bool "MVME5100 configured with an IPMC761"
depends on MVME5100
+ select PPC_I8259
config SPRUCE_BAUD_33M
bool "Spruce baud clock support"
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 92d18003f15..0fa5beae6d1 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -87,7 +87,6 @@ extern int pSeries_machine_check_exception(struct pt_regs *regs);
static void pseries_shared_idle(void);
static void pseries_dedicated_idle(void);
-static volatile void __iomem * chrp_int_ack_special;
struct mpic *pSeries_mpic;
void pSeries_show_cpuinfo(struct seq_file *m)
@@ -119,19 +118,11 @@ static void __init fwnmi_init(void)
fwnmi_active = 1;
}
-static int pSeries_irq_cascade(struct pt_regs *regs, void *data)
-{
- if (chrp_int_ack_special)
- return readb(chrp_int_ack_special);
- else
- return i8259_irq(regs);
-}
-
static void __init pSeries_init_mpic(void)
{
unsigned int *addrp;
struct device_node *np;
- int i;
+ unsigned long intack = 0;
/* All ISUs are setup, complete initialization */
mpic_init(pSeries_mpic);
@@ -142,16 +133,14 @@ static void __init pSeries_init_mpic(void)
get_property(np, "8259-interrupt-acknowledge", NULL)))
printk(KERN_ERR "Cannot find pci to get ack address\n");
else
- chrp_int_ack_special = ioremap(addrp[prom_n_addr_cells(np)-1], 1);
+ intack = addrp[prom_n_addr_cells(np)-1];
of_node_put(np);
/* Setup the legacy interrupts & controller */
- for (i = 0; i < NUM_ISA_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
- i8259_init(0);
+ i8259_init(intack, 0);
/* Hook cascade to mpic */
- mpic_setup_cascade(NUM_ISA_INTERRUPTS, pSeries_irq_cascade, NULL);
+ mpic_setup_cascade(NUM_ISA_INTERRUPTS, i8259_irq_cascade, NULL);
}
static void __init pSeries_setup_mpic(void)
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index e66fef652fa..f3c9e61c391 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_MPIC) += mpic.o
obj-$(CONFIG_PPC_INDIRECT_PCI) += indirect_pci.o
+obj-$(CONFIG_PPC_I8259) += i8259.o
diff --git a/arch/ppc/syslib/i8259.c b/arch/powerpc/sysdev/i8259.c
index 5c7908c20e4..90bce6e0c19 100644
--- a/arch/ppc/syslib/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -1,18 +1,26 @@
+/*
+ * i8259 interrupt controller driver.
+ *
+ * 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.
+ */
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/i8259.h>
-static volatile unsigned char *pci_intack; /* RO, gives us the irq vector */
+static volatile void __iomem *pci_intack; /* RO, gives us the irq vector */
-unsigned char cached_8259[2] = { 0xff, 0xff };
+static unsigned char cached_8259[2] = { 0xff, 0xff };
#define cached_A1 (cached_8259[0])
#define cached_21 (cached_8259[1])
static DEFINE_SPINLOCK(i8259_lock);
-int i8259_pic_irq_offset;
+static int i8259_pic_irq_offset;
/*
* Acknowledge the IRQ using either the PCI host bridge's interrupt
@@ -20,8 +28,7 @@ int i8259_pic_irq_offset;
* which is called. It should be noted that polling is broken on some
* IBM and Motorola PReP boxes so we must use the int-ack feature on them.
*/
-int
-i8259_irq(struct pt_regs *regs)
+int i8259_irq(struct pt_regs *regs)
{
int irq;
@@ -29,7 +36,7 @@ i8259_irq(struct pt_regs *regs)
/* Either int-ack or poll for the IRQ */
if (pci_intack)
- irq = *pci_intack;
+ irq = readb(pci_intack);
else {
/* Perform an interrupt acknowledge cycle on controller 1. */
outb(0x0C, 0x20); /* prepare for poll */
@@ -59,7 +66,12 @@ i8259_irq(struct pt_regs *regs)
}
spin_unlock(&i8259_lock);
- return irq;
+ return irq + i8259_pic_irq_offset;
+}
+
+int i8259_irq_cascade(struct pt_regs *regs, void *unused)
+{
+ return i8259_irq(regs);
}
static void i8259_mask_and_ack_irq(unsigned int irq_nr)
@@ -67,20 +79,18 @@ static void i8259_mask_and_ack_irq(unsigned int irq_nr)
unsigned long flags;
spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
-
+ irq_nr -= i8259_pic_irq_offset;
if (irq_nr > 7) {
cached_A1 |= 1 << (irq_nr-8);
- inb(0xA1); /* DUMMY */
- outb(cached_A1,0xA1);
- outb(0x20,0xA0); /* Non-specific EOI */
- outb(0x20,0x20); /* Non-specific EOI to cascade */
+ inb(0xA1); /* DUMMY */
+ outb(cached_A1, 0xA1);
+ outb(0x20, 0xA0); /* Non-specific EOI */
+ outb(0x20, 0x20); /* Non-specific EOI to cascade */
} else {
cached_21 |= 1 << irq_nr;
- inb(0x21); /* DUMMY */
- outb(cached_21,0x21);
- outb(0x20,0x20); /* Non-specific EOI */
+ inb(0x21); /* DUMMY */
+ outb(cached_21, 0x21);
+ outb(0x20, 0x20); /* Non-specific EOI */
}
spin_unlock_irqrestore(&i8259_lock, flags);
}
@@ -96,9 +106,8 @@ static void i8259_mask_irq(unsigned int irq_nr)
unsigned long flags;
spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
- if ( irq_nr < 8 )
+ irq_nr -= i8259_pic_irq_offset;
+ if (irq_nr < 8)
cached_21 |= 1 << irq_nr;
else
cached_A1 |= 1 << (irq_nr-8);
@@ -111,9 +120,8 @@ static void i8259_unmask_irq(unsigned int irq_nr)
unsigned long flags;
spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
- if ( irq_nr < 8 )
+ irq_nr -= i8259_pic_irq_offset;
+ if (irq_nr < 8)
cached_21 &= ~(1 << irq_nr);
else
cached_A1 &= ~(1 << (irq_nr-8));
@@ -169,12 +177,14 @@ static struct irqaction i8259_irqaction = {
* intack_addr - PCI interrupt acknowledge (real) address which will return
* the active irq from the 8259
*/
-void __init
-i8259_init(long intack_addr)
+void __init i8259_init(unsigned long intack_addr, int offset)
{
unsigned long flags;
+ int i;
spin_lock_irqsave(&i8259_lock, flags);
+ i8259_pic_irq_offset = offset;
+
/* init master interrupt controller */
outb(0x11, 0x20); /* Start init sequence */
outb(0x00, 0x21); /* Vector base */
@@ -198,11 +208,14 @@ i8259_init(long intack_addr)
spin_unlock_irqrestore(&i8259_lock, flags);
/* reserve our resources */
- setup_irq( i8259_pic_irq_offset + 2, &i8259_irqaction);
+ setup_irq(offset + 2, &i8259_irqaction);
request_resource(&ioport_resource, &pic1_iores);
request_resource(&ioport_resource, &pic2_iores);
request_resource(&ioport_resource, &pic_edgectrl_iores);
if (intack_addr != 0)
pci_intack = ioremap(intack_addr, 1);
+
+ for (i = 0; i < NUM_ISA_INTERRUPTS; ++i)
+ irq_desc[offset + i].handler = &i8259_pic;
}
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index e3efaf47d08..114b90fdea2 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -589,6 +589,7 @@ config EV64260
config LOPEC
bool "Motorola-LoPEC"
+ select PPC_I8259
config MVME5100
bool "Motorola-MVME5100"
@@ -596,6 +597,7 @@ config MVME5100
config PPLUS
bool "Motorola-PowerPlus"
+ select PPC_I8259
select PPC_INDIRECT_PCI
config PRPMC750
@@ -608,12 +610,14 @@ config PRPMC800
config SANDPOINT
bool "Motorola-Sandpoint"
+ select PPC_I8259
help
Select SANDPOINT if configuring for a Motorola Sandpoint X3
(any flavor).
config RADSTONE_PPC7D
bool "Radstone Technology PPC7D board"
+ select PPC_I8259
config PAL4
bool "SBS-Palomar4"
@@ -755,6 +759,7 @@ config CPM2
config PPC_CHRP
bool " Common Hardware Reference Platform (CHRP) based machines"
depends on PPC_MULTIPLATFORM
+ select PPC_I8259
select PPC_INDIRECT_PCI
default y
@@ -772,6 +777,7 @@ config PPC_PMAC64
config PPC_PREP
bool " PowerPC Reference Platform (PReP) based machines"
depends on PPC_MULTIPLATFORM
+ select PPC_I8259
select PPC_INDIRECT_PCI
default y
@@ -881,6 +887,7 @@ config HARRIER_STORE_GATHERING
config MVME5100_IPMC761_PRESENT
bool "MVME5100 configured with an IPMC761"
depends on MVME5100
+ select PPC_I8259
config SPRUCE_BAUD_33M
bool "Spruce baud clock support"
@@ -1138,6 +1145,7 @@ menu "Bus options"
config ISA
bool "Support for ISA-bus hardware"
depends on PPC_PREP || PPC_CHRP
+ select PPC_I8259
help
Find out whether you have ISA slots on your motherboard. ISA is the
name of a bus system, i.e. the way the CPU talks to the other stuff
@@ -1150,6 +1158,11 @@ config GENERIC_ISA_DMA
depends on POWER3 || POWER4 || 6xx && !CPM2
default y
+config PPC_I8259
+ bool
+ default y if 85xx
+ default n
+
config PPC_INDIRECT_PCI
bool
depends on PCI
@@ -1192,6 +1205,7 @@ config MPC83xx_PCI2
config PCI_QSPAN
bool "QSpan PCI"
depends on !4xx && !CPM2 && 8xx
+ select PPC_I8259
help
Say Y here if you have a system based on a Motorola 8xx-series
embedded processor with a QSPAN PCI interface, otherwise say N.
diff --git a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
index 9f9039498ae..eda659916f2 100644
--- a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
+++ b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
@@ -173,10 +173,7 @@ mpc85xx_cds_init_IRQ(void)
#ifdef CONFIG_PCI
openpic_hookup_cascade(PIRQ0A, "82c59 cascade", i8259_irq);
- for (i = 0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
-
- i8259_init(0);
+ i8259_init(0, 0);
#endif
#ifdef CONFIG_CPM2
diff --git a/arch/ppc/platforms/chrp_setup.c b/arch/ppc/platforms/chrp_setup.c
index 56c53bb3dfd..dad81ffd401 100644
--- a/arch/ppc/platforms/chrp_setup.c
+++ b/arch/ppc/platforms/chrp_setup.c
@@ -436,9 +436,7 @@ void __init chrp_init_IRQ(void)
i8259_irq);
}
- for (i = 0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
- i8259_init(chrp_int_ack);
+ i8259_init(chrp_int_ack, 0);
#if defined(CONFIG_VT) && defined(CONFIG_INPUT_ADBHID) && defined(XMON)
/* see if there is a keyboard in the device tree
diff --git a/arch/ppc/platforms/lopec.c b/arch/ppc/platforms/lopec.c
index 800c56a07a9..06d247c23b8 100644
--- a/arch/ppc/platforms/lopec.c
+++ b/arch/ppc/platforms/lopec.c
@@ -267,15 +267,11 @@ lopec_init_IRQ(void)
openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
&i8259_irq);
- /* Map i8259 interrupts */
- for(i = 0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
-
/*
* The EPIC allows for a read in the range of 0xFEF00000 ->
* 0xFEFFFFFF to generate a PCI interrupt-acknowledge transaction.
*/
- i8259_init(0xfef00000);
+ i8259_init(0xfef00000, 0);
}
static int __init
diff --git a/arch/ppc/platforms/mvme5100.c b/arch/ppc/platforms/mvme5100.c
index ce2ce88c803..108eb182ddd 100644
--- a/arch/ppc/platforms/mvme5100.c
+++ b/arch/ppc/platforms/mvme5100.c
@@ -223,11 +223,7 @@ mvme5100_init_IRQ(void)
openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
&i8259_irq);
- /* Map i8259 interrupts. */
- for (i = 0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
-
- i8259_init(0);
+ i8259_init(0, 0);
#else
openpic_init(0);
#endif
diff --git a/arch/ppc/platforms/pplus.c b/arch/ppc/platforms/pplus.c
index 59eb330b209..22bd40cfb09 100644
--- a/arch/ppc/platforms/pplus.c
+++ b/arch/ppc/platforms/pplus.c
@@ -665,10 +665,7 @@ static void __init pplus_init_IRQ(void)
ppc_md.get_irq = openpic_get_irq;
}
- for (i = 0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
-
- i8259_init(0);
+ i8259_init(0, 0);
if (ppc_md.progress)
ppc_md.progress("init_irq: exit", 0);
diff --git a/arch/ppc/platforms/prep_setup.c b/arch/ppc/platforms/prep_setup.c
index 9e5637e5f5a..067d7d53b81 100644
--- a/arch/ppc/platforms/prep_setup.c
+++ b/arch/ppc/platforms/prep_setup.c
@@ -954,11 +954,9 @@ prep_init_IRQ(void)
openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
i8259_irq);
}
- for ( i = 0 ; i < NUM_8259_INTERRUPTS ; i++ )
- irq_desc[i].handler = &i8259_pic;
if (have_residual_data) {
- i8259_init(residual_isapic_addr());
+ i8259_init(residual_isapic_addr(), 0);
return;
}
@@ -969,11 +967,11 @@ prep_init_IRQ(void)
if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA)
&& ((pci_did == PCI_DEVICE_ID_MOTOROLA_RAVEN)
|| (pci_did == PCI_DEVICE_ID_MOTOROLA_HAWK)))
- i8259_init(0);
+ i8259_init(0, 0);
else
/* PCI interrupt ack address given in section 6.1.8 of the
* PReP specification. */
- i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR);
+ i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR, 0);
}
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
diff --git a/arch/ppc/platforms/radstone_ppc7d.c b/arch/ppc/platforms/radstone_ppc7d.c
index 5058568c13e..6f97911c330 100644
--- a/arch/ppc/platforms/radstone_ppc7d.c
+++ b/arch/ppc/platforms/radstone_ppc7d.c
@@ -514,13 +514,9 @@ static void __init ppc7d_init_irq(void)
int irq;
pr_debug("%s\n", __FUNCTION__);
- i8259_init(0);
+ i8259_init(0, 0);
mv64360_init_irq();
- /* IRQ 0..15 are handled by the cascaded 8259's of the Ali1535 */
- for (irq = 0; irq < 16; irq++) {
- irq_desc[irq].handler = &i8259_pic;
- }
/* IRQs 5,6,9,10,11,14,15 are level sensitive */
irq_desc[5].status |= IRQ_LEVEL;
irq_desc[6].status |= IRQ_LEVEL;
diff --git a/arch/ppc/platforms/sandpoint.c b/arch/ppc/platforms/sandpoint.c
index d4c9781989f..9eeed357230 100644
--- a/arch/ppc/platforms/sandpoint.c
+++ b/arch/ppc/platforms/sandpoint.c
@@ -494,18 +494,10 @@ sandpoint_init_IRQ(void)
i8259_irq);
/*
- * openpic_init() has set up irq_desc[16-31] to be openpic
- * interrupts. We need to set irq_desc[0-15] to be i8259
- * interrupts.
- */
- for(i=0; i < NUM_8259_INTERRUPTS; i++)
- irq_desc[i].handler = &i8259_pic;
-
- /*
* The EPIC allows for a read in the range of 0xFEF00000 ->
* 0xFEFFFFFF to generate a PCI interrupt-acknowledge transaction.
*/
- i8259_init(0xfef00000);
+ i8259_init(0xfef00000, 0);
}
static unsigned long __init
diff --git a/arch/ppc/syslib/Makefile b/arch/ppc/syslib/Makefile
index 5739a19b9ed..e6e6aa4d291 100644
--- a/arch/ppc/syslib/Makefile
+++ b/arch/ppc/syslib/Makefile
@@ -36,14 +36,12 @@ endif
endif
obj-$(CONFIG_8xx) += m8xx_setup.o ppc8xx_pic.o $(wdt-mpc8xx-y) \
ppc_sys.o mpc8xx_devices.o mpc8xx_sys.o
-ifeq ($(CONFIG_8xx),y)
-obj-$(CONFIG_PCI) += qspan_pci.o i8259.o
-endif
+obj-$(CONFIG_PCI_QSPAN) += qspan_pci.o
obj-$(CONFIG_PPC_OF) += prom_init.o prom.o
obj-$(CONFIG_PPC_PMAC) += open_pic.o
obj-$(CONFIG_POWER4) += open_pic2.o
-obj-$(CONFIG_PPC_CHRP) += open_pic.o i8259.o
-obj-$(CONFIG_PPC_PREP) += open_pic.o i8259.o todc_time.o
+obj-$(CONFIG_PPC_CHRP) += open_pic.o
+obj-$(CONFIG_PPC_PREP) += open_pic.o todc_time.o
obj-$(CONFIG_BAMBOO) += pci_auto.o todc_time.o
obj-$(CONFIG_CPCI690) += todc_time.o pci_auto.o
obj-$(CONFIG_EBONY) += pci_auto.o todc_time.o
@@ -51,7 +49,7 @@ obj-$(CONFIG_EV64260) += todc_time.o pci_auto.o
obj-$(CONFIG_CHESTNUT) += mv64360_pic.o pci_auto.o
obj-$(CONFIG_GEMINI) += open_pic.o
obj-$(CONFIG_GT64260) += gt64260_pic.o
-obj-$(CONFIG_LOPEC) += i8259.o pci_auto.o todc_time.o
+obj-$(CONFIG_LOPEC) += pci_auto.o todc_time.o
obj-$(CONFIG_HDPU) += pci_auto.o
obj-$(CONFIG_LUAN) += pci_auto.o todc_time.o
obj-$(CONFIG_KATANA) += pci_auto.o
@@ -59,18 +57,17 @@ obj-$(CONFIG_MV64360) += mv64360_pic.o
obj-$(CONFIG_MV64X60) += mv64x60.o mv64x60_win.o
obj-$(CONFIG_MVME5100) += open_pic.o todc_time.o \
pci_auto.o hawk_common.o
-obj-$(CONFIG_MVME5100_IPMC761_PRESENT) += i8259.o
obj-$(CONFIG_OCOTEA) += pci_auto.o todc_time.o
obj-$(CONFIG_PAL4) += cpc700_pic.o
obj-$(CONFIG_POWERPMC250) += pci_auto.o
-obj-$(CONFIG_PPLUS) += hawk_common.o open_pic.o i8259.o \
+obj-$(CONFIG_PPLUS) += hawk_common.o open_pic.o \
todc_time.o pci_auto.o
obj-$(CONFIG_PRPMC750) += open_pic.o pci_auto.o \
hawk_common.o
obj-$(CONFIG_HARRIER) += harrier.o
obj-$(CONFIG_PRPMC800) += open_pic.o pci_auto.o
-obj-$(CONFIG_RADSTONE_PPC7D) += i8259.o pci_auto.o
-obj-$(CONFIG_SANDPOINT) += i8259.o pci_auto.o todc_time.o
+obj-$(CONFIG_RADSTONE_PPC7D) += pci_auto.o
+obj-$(CONFIG_SANDPOINT) += pci_auto.o todc_time.o
obj-$(CONFIG_SBC82xx) += todc_time.o
obj-$(CONFIG_SPRUCE) += cpc700_pic.o pci_auto.o \
todc_time.o
@@ -92,7 +89,7 @@ obj-$(CONFIG_MPC10X_OPENPIC) += open_pic.o
obj-$(CONFIG_40x) += dcr.o
obj-$(CONFIG_BOOKE) += dcr.o
obj-$(CONFIG_85xx) += open_pic.o ppc85xx_common.o ppc85xx_setup.o \
- ppc_sys.o i8259.o mpc85xx_sys.o \
+ ppc_sys.o mpc85xx_sys.o \
mpc85xx_devices.o
ifeq ($(CONFIG_85xx),y)
obj-$(CONFIG_PCI) += pci_auto.o
diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index 8cbac7f3209..963f519b771 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -123,6 +123,11 @@ config MPIC
bool
default y
+config PPC_I8259
+ depends on PPC_PSERIES
+ bool
+ default y
+
config BPA_IIC
depends on PPC_BPA
bool
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index cb6ac3d1a06..2c541c6652b 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -24,7 +24,7 @@ pci-obj-$(CONFIG_PPC_MULTIPLATFORM) += pci_dn.o pci_direct_iommu.o
obj-$(CONFIG_PCI) += pci.o pci_iommu.o iomap.o $(pci-obj-y)
-obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o i8259.o
+obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o
ifneq ($(CONFIG_PPC_MERGE),y)
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
endif
diff --git a/arch/ppc64/kernel/i8259.c b/arch/ppc64/kernel/i8259.c
deleted file mode 100644
index 74dcfd68fc7..00000000000
--- a/arch/ppc64/kernel/i8259.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * c 2001 PPC64 Team, IBM Corp
- *
- * 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.
- */
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/cache.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <asm/io.h>
-#include <asm/ppcdebug.h>
-#include "i8259.h"
-
-unsigned char cached_8259[2] = { 0xff, 0xff };
-#define cached_A1 (cached_8259[0])
-#define cached_21 (cached_8259[1])
-
-static __cacheline_aligned_in_smp DEFINE_SPINLOCK(i8259_lock);
-
-static int i8259_pic_irq_offset;
-static int i8259_present;
-
-int i8259_irq(int cpu)
-{
- int irq;
-
- spin_lock/*_irqsave*/(&i8259_lock/*, flags*/);
- /*
- * Perform an interrupt acknowledge cycle on controller 1
- */
- outb(0x0C, 0x20);
- irq = inb(0x20) & 7;
- if (irq == 2)
- {
- /*
- * Interrupt is cascaded so perform interrupt
- * acknowledge on controller 2
- */
- outb(0x0C, 0xA0);
- irq = (inb(0xA0) & 7) + 8;
- }
- else if (irq==7)
- {
- /*
- * This may be a spurious interrupt
- *
- * Read the interrupt status register. If the most
- * significant bit is not set then there is no valid
- * interrupt
- */
- outb(0x0b, 0x20);
- if(~inb(0x20)&0x80) {
- spin_unlock/*_irqrestore*/(&i8259_lock/*, flags*/);
- return -1;
- }
- }
- spin_unlock/*_irqrestore*/(&i8259_lock/*, flags*/);
- return irq;
-}
-
-static void i8259_mask_and_ack_irq(unsigned int irq_nr)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
-
- if (irq_nr > 7) {
- cached_A1 |= 1 << (irq_nr-8);
- inb(0xA1); /* DUMMY */
- outb(cached_A1,0xA1);
- outb(0x20,0xA0); /* Non-specific EOI */
- outb(0x20,0x20); /* Non-specific EOI to cascade */
- } else {
- cached_21 |= 1 << irq_nr;
- inb(0x21); /* DUMMY */
- outb(cached_21,0x21);
- outb(0x20,0x20); /* Non-specific EOI */
- }
- spin_unlock_irqrestore(&i8259_lock, flags);
-}
-
-static void i8259_set_irq_mask(int irq_nr)
-{
- outb(cached_A1,0xA1);
- outb(cached_21,0x21);
-}
-
-static void i8259_mask_irq(unsigned int irq_nr)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
- if ( irq_nr < 8 )
- cached_21 |= 1 << irq_nr;
- else
- cached_A1 |= 1 << (irq_nr-8);
- i8259_set_irq_mask(irq_nr);
- spin_unlock_irqrestore(&i8259_lock, flags);
-}
-
-static void i8259_unmask_irq(unsigned int irq_nr)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&i8259_lock, flags);
- if ( irq_nr >= i8259_pic_irq_offset )
- irq_nr -= i8259_pic_irq_offset;
- if ( irq_nr < 8 )
- cached_21 &= ~(1 << irq_nr);
- else
- cached_A1 &= ~(1 << (irq_nr-8));
- i8259_set_irq_mask(irq_nr);
- spin_unlock_irqrestore(&i8259_lock, flags);
-}
-
-static void i8259_end_irq(unsigned int irq)
-{
- if (!(get_irq_desc(irq)->status & (IRQ_DISABLED|IRQ_INPROGRESS)) &&
- get_irq_desc(irq)->action)
- i8259_unmask_irq(irq);
-}
-
-struct hw_interrupt_type i8259_pic = {
- .typename = " i8259 ",
- .enable = i8259_unmask_irq,
- .disable = i8259_mask_irq,
- .ack = i8259_mask_and_ack_irq,
- .end = i8259_end_irq,
-};
-
-void __init i8259_init(int offset)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&i8259_lock, flags);
- i8259_pic_irq_offset = offset;
- i8259_present = 1;
- /* init master interrupt controller */
- outb(0x11, 0x20); /* Start init sequence */
- outb(0x00, 0x21); /* Vector base */
- outb(0x04, 0x21); /* edge tiggered, Cascade (slave) on IRQ2 */
- outb(0x01, 0x21); /* Select 8086 mode */
- outb(0xFF, 0x21); /* Mask all */
- /* init slave interrupt controller */
- outb(0x11, 0xA0); /* Start init sequence */
- outb(0x08, 0xA1); /* Vector base */
- outb(0x02, 0xA1); /* edge triggered, Cascade (slave) on IRQ2 */
- outb(0x01, 0xA1); /* Select 8086 mode */
- outb(0xFF, 0xA1); /* Mask all */
- outb(cached_A1, 0xA1);
- outb(cached_21, 0x21);
- spin_unlock_irqrestore(&i8259_lock, flags);
-
-}
-
-static int i8259_request_cascade(void)
-{
- if (!i8259_present)
- return -ENODEV;
-
- request_irq( i8259_pic_irq_offset + 2, no_action, SA_INTERRUPT,
- "82c59 secondary cascade", NULL );
-
- return 0;
-}
-
-arch_initcall(i8259_request_cascade);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 06:10:19 +0000