[PATCH] ppc32: Support for 82xx PQII on-chip PCI bridge
This patch adds on-chip PCI bridge support for the PQ2 family. The
incomplete existent code is updated with interrupt handling stuff and
board-specific bits for 8272ADS and PQ2FADS; the related files were renamed
(from m8260_pci to m82xx_pci) to be of more generic fashion. This is
tested with 8266ADS and 8272ADS, should work on PQ2FADS as well.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 600f23d..6e6377a 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -1143,12 +1143,12 @@
config PCI_8260
bool
- depends on PCI && 8260 && !8272
+ depends on PCI && 8260
default y
config 8260_PCI9
bool " Enable workaround for MPC826x erratum PCI 9"
- depends on PCI_8260
+ depends on PCI_8260 && !ADS8272
default y
choice
diff --git a/arch/ppc/platforms/pq2ads.h b/arch/ppc/platforms/pq2ads.h
index cf5e5dd..067d9a5 100644
--- a/arch/ppc/platforms/pq2ads.h
+++ b/arch/ppc/platforms/pq2ads.h
@@ -49,10 +49,10 @@
/* PCI interrupt controller */
#define PCI_INT_STAT_REG 0xF8200000
#define PCI_INT_MASK_REG 0xF8200004
-#define PIRQA (NR_SIU_INTS + 0)
-#define PIRQB (NR_SIU_INTS + 1)
-#define PIRQC (NR_SIU_INTS + 2)
-#define PIRQD (NR_SIU_INTS + 3)
+#define PIRQA (NR_CPM_INTS + 0)
+#define PIRQB (NR_CPM_INTS + 1)
+#define PIRQC (NR_CPM_INTS + 2)
+#define PIRQD (NR_CPM_INTS + 3)
/*
* PCI memory map definitions for MPC8266ADS-PCI.
@@ -68,28 +68,23 @@
* 0x00000000-0x1FFFFFFF 0x00000000-0x1FFFFFFF MPC8266 local memory
*/
-/* window for a PCI master to access MPC8266 memory */
-#define PCI_SLV_MEM_LOCAL 0x00000000 /* Local base */
-#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
+/* All the other PCI memory map definitions reside at syslib/m82xx_pci.h
+ Here we should redefine what is unique for this board */
+#define M82xx_PCI_SLAVE_MEM_LOCAL 0x00000000 /* Local base */
+#define M82xx_PCI_SLAVE_MEM_BUS 0x00000000 /* PCI base */
+#define M82xx_PCI_SLAVE_MEM_SIZE 0x10000000 /* 256 Mb */
-/* window for the processor to access PCI memory with prefetching */
-#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
-#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
-#define PCI_MSTR_MEM_SIZE 0x20000000 /* 512MB */
+#define M82xx_PCI_SLAVE_SEC_WND_SIZE ~(0x40000000 - 1U) /* 2 x 512Mb */
+#define M82xx_PCI_SLAVE_SEC_WND_BASE 0x80000000 /* PCI Memory base */
-/* window for the processor to access PCI memory without prefetching */
-#define PCI_MSTR_MEMIO_LOCAL 0xA0000000 /* Local base */
-#define PCI_MSTR_MEMIO_BUS 0xA0000000 /* PCI base */
-#define PCI_MSTR_MEMIO_SIZE 0x20000000 /* 512MB */
+#if defined(CONFIG_ADS8272)
+#define PCI_INT_TO_SIU SIU_INT_IRQ2
+#elif defined(CONFIG_PQ2FADS)
+#define PCI_INT_TO_SIU SIU_INT_IRQ6
+#else
+#warning PCI Bridge will be without interrupts support
+#endif
-/* window for the processor to access PCI I/O */
-#define PCI_MSTR_IO_LOCAL 0xF4000000 /* Local base */
-#define PCI_MSTR_IO_BUS 0x00000000 /* PCI base */
-#define PCI_MSTR_IO_SIZE 0x04000000 /* 64MB */
-
-#define _IO_BASE PCI_MSTR_IO_LOCAL
-#define _ISA_MEM_BASE PCI_MSTR_MEMIO_LOCAL
-#define PCI_DRAM_OFFSET PCI_SLV_MEM_BUS
#endif /* CONFIG_PCI */
#endif /* __MACH_ADS8260_DEFS */
diff --git a/arch/ppc/syslib/Makefile b/arch/ppc/syslib/Makefile
index 46cbb3e..96acf85 100644
--- a/arch/ppc/syslib/Makefile
+++ b/arch/ppc/syslib/Makefile
@@ -81,7 +81,7 @@
obj-$(CONFIG_SPRUCE) += cpc700_pic.o indirect_pci.o pci_auto.o \
todc_time.o
obj-$(CONFIG_8260) += m8260_setup.o
-obj-$(CONFIG_PCI_8260) += m8260_pci.o indirect_pci.o
+obj-$(CONFIG_PCI_8260) += m82xx_pci.o indirect_pci.o pci_auto.o
obj-$(CONFIG_8260_PCI9) += m8260_pci_erratum9.o
obj-$(CONFIG_CPM2) += cpm2_common.o cpm2_pic.o
ifeq ($(CONFIG_PPC_GEN550),y)
diff --git a/arch/ppc/syslib/m8260_pci.c b/arch/ppc/syslib/m8260_pci.c
deleted file mode 100644
index 057cc3f..0000000
--- a/arch/ppc/syslib/m8260_pci.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2004 Red Hat, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/machdep.h>
-#include <asm/pci-bridge.h>
-#include <asm/immap_cpm2.h>
-#include <asm/mpc8260.h>
-
-#include "m8260_pci.h"
-
-
-/* PCI bus configuration registers.
- */
-
-static void __init m8260_setup_pci(struct pci_controller *hose)
-{
- volatile cpm2_map_t *immap = cpm2_immr;
- unsigned long pocmr;
- u16 tempShort;
-
-#ifndef CONFIG_ATC /* already done in U-Boot */
- /*
- * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
- * and local bus for PCI (SIUMCR [LBPC]).
- */
- immap->im_siu_conf.siu_82xx.sc_siumcr = 0x00640000;
-#endif
-
- /* Make PCI lowest priority */
- /* Each 4 bits is a device bus request and the MS 4bits
- is highest priority */
- /* Bus 4bit value
- --- ----------
- CPM high 0b0000
- CPM middle 0b0001
- CPM low 0b0010
- PCI reguest 0b0011
- Reserved 0b0100
- Reserved 0b0101
- Internal Core 0b0110
- External Master 1 0b0111
- External Master 2 0b1000
- External Master 3 0b1001
- The rest are reserved */
- immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x61207893;
-
- /* Park bus on core while modifying PCI Bus accesses */
- immap->im_siu_conf.siu_82xx.sc_ppc_acr = 0x6;
-
- /*
- * Set up master window that allows the CPU to access PCI space. This
- * window is set up using the first SIU PCIBR registers.
- */
- immap->im_memctl.memc_pcimsk0 = MPC826x_PCI_MASK;
- immap->im_memctl.memc_pcibr0 = MPC826x_PCI_BASE | PCIBR_ENABLE;
-
- /* Disable machine check on no response or target abort */
- immap->im_pci.pci_emr = cpu_to_le32(0x1fe7);
- /* Release PCI RST (by default the PCI RST signal is held low) */
- immap->im_pci.pci_gcr = cpu_to_le32(PCIGCR_PCI_BUS_EN);
-
- /* give it some time */
- mdelay(1);
-
- /*
- * Set up master window that allows the CPU to access PCI Memory (prefetch)
- * space. This window is set up using the first set of Outbound ATU registers.
- */
- immap->im_pci.pci_potar0 = cpu_to_le32(MPC826x_PCI_LOWER_MEM >> 12);
- immap->im_pci.pci_pobar0 = cpu_to_le32((MPC826x_PCI_LOWER_MEM - MPC826x_PCI_MEM_OFFSET) >> 12);
- pocmr = ((MPC826x_PCI_UPPER_MEM - MPC826x_PCI_LOWER_MEM) >> 12) ^ 0xfffff;
- immap->im_pci.pci_pocmr0 = cpu_to_le32(pocmr | POCMR_ENABLE | POCMR_PREFETCH_EN);
-
- /*
- * Set up master window that allows the CPU to access PCI Memory (non-prefetch)
- * space. This window is set up using the second set of Outbound ATU registers.
- */
- immap->im_pci.pci_potar1 = cpu_to_le32(MPC826x_PCI_LOWER_MMIO >> 12);
- immap->im_pci.pci_pobar1 = cpu_to_le32((MPC826x_PCI_LOWER_MMIO - MPC826x_PCI_MMIO_OFFSET) >> 12);
- pocmr = ((MPC826x_PCI_UPPER_MMIO - MPC826x_PCI_LOWER_MMIO) >> 12) ^ 0xfffff;
- immap->im_pci.pci_pocmr1 = cpu_to_le32(pocmr | POCMR_ENABLE);
-
- /*
- * Set up master window that allows the CPU to access PCI IO space. This window
- * is set up using the third set of Outbound ATU registers.
- */
- immap->im_pci.pci_potar2 = cpu_to_le32(MPC826x_PCI_IO_BASE >> 12);
- immap->im_pci.pci_pobar2 = cpu_to_le32(MPC826x_PCI_LOWER_IO >> 12);
- pocmr = ((MPC826x_PCI_UPPER_IO - MPC826x_PCI_LOWER_IO) >> 12) ^ 0xfffff;
- immap->im_pci.pci_pocmr2 = cpu_to_le32(pocmr | POCMR_ENABLE | POCMR_PCI_IO);
-
- /*
- * Set up slave window that allows PCI masters to access MPC826x local memory.
- * This window is set up using the first set of Inbound ATU registers
- */
-
- immap->im_pci.pci_pitar0 = cpu_to_le32(MPC826x_PCI_SLAVE_MEM_LOCAL >> 12);
- immap->im_pci.pci_pibar0 = cpu_to_le32(MPC826x_PCI_SLAVE_MEM_BUS >> 12);
- pocmr = ((MPC826x_PCI_SLAVE_MEM_SIZE-1) >> 12) ^ 0xfffff;
- immap->im_pci.pci_picmr0 = cpu_to_le32(pocmr | PICMR_ENABLE | PICMR_PREFETCH_EN);
-
- /* See above for description - puts PCI request as highest priority */
- immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x03124567;
-
- /* Park the bus on the PCI */
- immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
-
- /* Host mode - specify the bridge as a host-PCI bridge */
- early_write_config_word(hose, 0, 0, PCI_CLASS_DEVICE, PCI_CLASS_BRIDGE_HOST);
-
- /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
- early_read_config_word(hose, 0, 0, PCI_COMMAND, &tempShort);
- early_write_config_word(hose, 0, 0, PCI_COMMAND,
- tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
-}
-
-void __init m8260_find_bridges(void)
-{
- extern int pci_assign_all_busses;
- struct pci_controller * hose;
-
- pci_assign_all_busses = 1;
-
- hose = pcibios_alloc_controller();
-
- if (!hose)
- return;
-
- ppc_md.pci_swizzle = common_swizzle;
-
- hose->first_busno = 0;
- hose->bus_offset = 0;
- hose->last_busno = 0xff;
-
- setup_m8260_indirect_pci(hose,
- (unsigned long)&cpm2_immr->im_pci.pci_cfg_addr,
- (unsigned long)&cpm2_immr->im_pci.pci_cfg_data);
-
- m8260_setup_pci(hose);
- hose->pci_mem_offset = MPC826x_PCI_MEM_OFFSET;
-
- hose->io_base_virt = ioremap(MPC826x_PCI_IO_BASE,
- MPC826x_PCI_IO_SIZE);
- isa_io_base = (unsigned long) hose->io_base_virt;
-
- /* setup resources */
- pci_init_resource(&hose->mem_resources[0],
- MPC826x_PCI_LOWER_MEM,
- MPC826x_PCI_UPPER_MEM,
- IORESOURCE_MEM|IORESOURCE_PREFETCH, "PCI prefetchable memory");
-
- pci_init_resource(&hose->mem_resources[1],
- MPC826x_PCI_LOWER_MMIO,
- MPC826x_PCI_UPPER_MMIO,
- IORESOURCE_MEM, "PCI memory");
-
- pci_init_resource(&hose->io_resource,
- MPC826x_PCI_LOWER_IO,
- MPC826x_PCI_UPPER_IO,
- IORESOURCE_IO, "PCI I/O");
-}
diff --git a/arch/ppc/syslib/m8260_pci.h b/arch/ppc/syslib/m8260_pci.h
deleted file mode 100644
index d1352120..0000000
--- a/arch/ppc/syslib/m8260_pci.h
+++ /dev/null
@@ -1,76 +0,0 @@
-
-#ifndef _PPC_KERNEL_M8260_PCI_H
-#define _PPC_KERNEL_M8260_PCI_H
-
-#include <asm/m8260_pci.h>
-
-/*
- * Local->PCI map (from CPU) controlled by
- * MPC826x master window
- *
- * 0x80000000 - 0xBFFFFFFF Total CPU2PCI space PCIBR0
- *
- * 0x80000000 - 0x9FFFFFFF PCI Mem with prefetch (Outbound ATU #1)
- * 0xA0000000 - 0xAFFFFFFF PCI Mem w/o prefetch (Outbound ATU #2)
- * 0xB0000000 - 0xB0FFFFFF 32-bit PCI IO (Outbound ATU #3)
- *
- * PCI->Local map (from PCI)
- * MPC826x slave window controlled by
- *
- * 0x00000000 - 0x07FFFFFF MPC826x local memory (Inbound ATU #1)
- */
-
-/*
- * Slave window that allows PCI masters to access MPC826x local memory.
- * This window is set up using the first set of Inbound ATU registers
- */
-
-#ifndef MPC826x_PCI_SLAVE_MEM_LOCAL
-#define MPC826x_PCI_SLAVE_MEM_LOCAL (((struct bd_info *)__res)->bi_memstart)
-#define MPC826x_PCI_SLAVE_MEM_BUS (((struct bd_info *)__res)->bi_memstart)
-#define MPC826x_PCI_SLAVE_MEM_SIZE (((struct bd_info *)__res)->bi_memsize)
-#endif
-
-/*
- * This is the window that allows the CPU to access PCI address space.
- * It will be setup with the SIU PCIBR0 register. All three PCI master
- * windows, which allow the CPU to access PCI prefetch, non prefetch,
- * and IO space (see below), must all fit within this window.
- */
-#ifndef MPC826x_PCI_BASE
-#define MPC826x_PCI_BASE 0x80000000
-#define MPC826x_PCI_MASK 0xc0000000
-#endif
-
-#ifndef MPC826x_PCI_LOWER_MEM
-#define MPC826x_PCI_LOWER_MEM 0x80000000
-#define MPC826x_PCI_UPPER_MEM 0x9fffffff
-#define MPC826x_PCI_MEM_OFFSET 0x00000000
-#endif
-
-#ifndef MPC826x_PCI_LOWER_MMIO
-#define MPC826x_PCI_LOWER_MMIO 0xa0000000
-#define MPC826x_PCI_UPPER_MMIO 0xafffffff
-#define MPC826x_PCI_MMIO_OFFSET 0x00000000
-#endif
-
-#ifndef MPC826x_PCI_LOWER_IO
-#define MPC826x_PCI_LOWER_IO 0x00000000
-#define MPC826x_PCI_UPPER_IO 0x00ffffff
-#define MPC826x_PCI_IO_BASE 0xb0000000
-#define MPC826x_PCI_IO_SIZE 0x01000000
-#endif
-
-#ifndef _IO_BASE
-#define _IO_BASE isa_io_base
-#endif
-
-#ifdef CONFIG_8260_PCI9
-struct pci_controller;
-extern void setup_m8260_indirect_pci(struct pci_controller* hose,
- u32 cfg_addr, u32 cfg_data);
-#else
-#define setup_m8260_indirect_pci setup_indirect_pci
-#endif
-
-#endif /* _PPC_KERNEL_M8260_PCI_H */
diff --git a/arch/ppc/syslib/m8260_pci_erratum9.c b/arch/ppc/syslib/m8260_pci_erratum9.c
index 9c0582d..1dc7e4e 100644
--- a/arch/ppc/syslib/m8260_pci_erratum9.c
+++ b/arch/ppc/syslib/m8260_pci_erratum9.c
@@ -31,7 +31,7 @@
#include <asm/immap_cpm2.h>
#include <asm/cpm2.h>
-#include "m8260_pci.h"
+#include "m82xx_pci.h"
#ifdef CONFIG_8260_PCI9
/*#include <asm/mpc8260_pci9.h>*/ /* included in asm/io.h */
@@ -248,11 +248,11 @@
static inline int is_pci_mem(unsigned long addr)
{
- if (addr >= MPC826x_PCI_LOWER_MMIO &&
- addr <= MPC826x_PCI_UPPER_MMIO)
+ if (addr >= M82xx_PCI_LOWER_MMIO &&
+ addr <= M82xx_PCI_UPPER_MMIO)
return 1;
- if (addr >= MPC826x_PCI_LOWER_MEM &&
- addr <= MPC826x_PCI_UPPER_MEM)
+ if (addr >= M82xx_PCI_LOWER_MEM &&
+ addr <= M82xx_PCI_UPPER_MEM)
return 1;
return 0;
}
diff --git a/arch/ppc/syslib/m8260_setup.c b/arch/ppc/syslib/m8260_setup.c
index 23ea3f6..fda75d7 100644
--- a/arch/ppc/syslib/m8260_setup.c
+++ b/arch/ppc/syslib/m8260_setup.c
@@ -34,7 +34,8 @@
unsigned char __res[sizeof(bd_t)];
extern void cpm2_reset(void);
-extern void m8260_find_bridges(void);
+extern void pq2_find_bridges(void);
+extern void pq2pci_init_irq(void);
extern void idma_pci9_init(void);
/* Place-holder for board-specific init */
@@ -56,7 +57,7 @@
idma_pci9_init();
#endif
#ifdef CONFIG_PCI_8260
- m8260_find_bridges();
+ pq2_find_bridges();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
@@ -173,6 +174,12 @@
* in case the boot rom changed something on us.
*/
cpm2_immr->im_intctl.ic_siprr = 0x05309770;
+
+#if defined(CONFIG_PCI) && (defined(CONFIG_ADS8272) || defined(CONFIG_PQ2FADS))
+ /* Initialize stuff for the 82xx CPLD IC and install demux */
+ pq2pci_init_irq();
+#endif
+
}
/*
diff --git a/arch/ppc/syslib/m82xx_pci.c b/arch/ppc/syslib/m82xx_pci.c
new file mode 100644
index 0000000..5e7a7ed
--- /dev/null
+++ b/arch/ppc/syslib/m82xx_pci.c
@@ -0,0 +1,383 @@
+/*
+ *
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004 Red Hat, Inc.
+ *
+ * 2005 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug@ru.mvista.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/immap_cpm2.h>
+#include <asm/mpc8260.h>
+#include <asm/cpm2.h>
+
+#include "m82xx_pci.h"
+
+/*
+ * Interrupt routing
+ */
+
+static inline int
+pq2pci_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ { PIRQA, PIRQB, PIRQC, PIRQD }, /* IDSEL 22 - PCI slot 0 */
+ { PIRQD, PIRQA, PIRQB, PIRQC }, /* IDSEL 23 - PCI slot 1 */
+ { PIRQC, PIRQD, PIRQA, PIRQB }, /* IDSEL 24 - PCI slot 2 */
+ };
+
+ const long min_idsel = 22, max_idsel = 24, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+static void
+pq2pci_mask_irq(unsigned int irq)
+{
+ int bit = irq - NR_CPM_INTS;
+
+ *(volatile unsigned long *) PCI_INT_MASK_REG |= (1 << (31 - bit));
+ return;
+}
+
+static void
+pq2pci_unmask_irq(unsigned int irq)
+{
+ int bit = irq - NR_CPM_INTS;
+
+ *(volatile unsigned long *) PCI_INT_MASK_REG &= ~(1 << (31 - bit));
+ return;
+}
+
+static void
+pq2pci_mask_and_ack(unsigned int irq)
+{
+ int bit = irq - NR_CPM_INTS;
+
+ *(volatile unsigned long *) PCI_INT_MASK_REG |= (1 << (31 - bit));
+ return;
+}
+
+static void
+pq2pci_end_irq(unsigned int irq)
+{
+ int bit = irq - NR_CPM_INTS;
+
+ *(volatile unsigned long *) PCI_INT_MASK_REG &= ~(1 << (31 - bit));
+ return;
+}
+
+struct hw_interrupt_type pq2pci_ic = {
+ "PQ2 PCI",
+ NULL,
+ NULL,
+ pq2pci_unmask_irq,
+ pq2pci_mask_irq,
+ pq2pci_mask_and_ack,
+ pq2pci_end_irq,
+ 0
+};
+
+static irqreturn_t
+pq2pci_irq_demux(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned long stat, mask, pend;
+ int bit;
+
+ for(;;) {
+ stat = *(volatile unsigned long *) PCI_INT_STAT_REG;
+ mask = *(volatile unsigned long *) PCI_INT_MASK_REG;
+ pend = stat & ~mask & 0xf0000000;
+ if (!pend)
+ break;
+ for (bit = 0; pend != 0; ++bit, pend <<= 1) {
+ if (pend & 0x80000000)
+ __do_IRQ(NR_CPM_INTS + bit, regs);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction pq2pci_irqaction = {
+ .handler = pq2pci_irq_demux,
+ .flags = SA_INTERRUPT,
+ .mask = CPU_MASK_NONE,
+ .name = "PQ2 PCI cascade",
+};
+
+
+void
+pq2pci_init_irq(void)
+{
+ int irq;
+ volatile cpm2_map_t *immap = cpm2_immr;
+#if defined CONFIG_ADS8272
+ /* configure chip select for PCI interrupt controller */
+ immap->im_memctl.memc_br3 = PCI_INT_STAT_REG | 0x00001801;
+ immap->im_memctl.memc_or3 = 0xffff8010;
+#elif defined CONFIG_PQ2FADS
+ immap->im_memctl.memc_br8 = PCI_INT_STAT_REG | 0x00001801;
+ immap->im_memctl.memc_or8 = 0xffff8010;
+#endif
+ for (irq = NR_CPM_INTS; irq < NR_CPM_INTS + 4; irq++)
+ irq_desc[irq].handler = &pq2pci_ic;
+
+ /* make PCI IRQ level sensitive */
+ immap->im_intctl.ic_siexr &=
+ ~(1 << (14 - (PCI_INT_TO_SIU - SIU_INT_IRQ1)));
+
+ /* mask all PCI interrupts */
+ *(volatile unsigned long *) PCI_INT_MASK_REG |= 0xfff00000;
+
+ /* install the demultiplexer for the PCI cascade interrupt */
+ setup_irq(PCI_INT_TO_SIU, &pq2pci_irqaction);
+ return;
+}
+
+static int
+pq2pci_exclude_device(u_char bus, u_char devfn)
+{
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/* PCI bus configuration registers.
+ */
+static void
+pq2ads_setup_pci(struct pci_controller *hose)
+{
+ __u32 val;
+ volatile cpm2_map_t *immap = cpm2_immr;
+ bd_t* binfo = (bd_t*) __res;
+ u32 sccr = immap->im_clkrst.car_sccr;
+ uint pci_div,freq,time;
+ /* PCI int lowest prio */
+ /* Each 4 bits is a device bus request and the MS 4bits
+ is highest priority */
+ /* Bus 4bit value
+ --- ----------
+ CPM high 0b0000
+ CPM middle 0b0001
+ CPM low 0b0010
+ PCI reguest 0b0011
+ Reserved 0b0100
+ Reserved 0b0101
+ Internal Core 0b0110
+ External Master 1 0b0111
+ External Master 2 0b1000
+ External Master 3 0b1001
+ The rest are reserved
+ */
+ immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x61207893;
+ /* park bus on core */
+ immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_CORE;
+ /*
+ * Set up master windows that allow the CPU to access PCI space. These
+ * windows are set up using the two SIU PCIBR registers.
+ */
+
+ immap->im_memctl.memc_pcimsk0 = M82xx_PCI_PRIM_WND_SIZE;
+ immap->im_memctl.memc_pcibr0 = M82xx_PCI_PRIM_WND_BASE | PCIBR_ENABLE;
+
+#ifdef M82xx_PCI_SEC_WND_SIZE
+ immap->im_memctl.memc_pcimsk1 = M82xx_PCI_SEC_WND_SIZE;
+ immap->im_memctl.memc_pcibr1 = M82xx_PCI_SEC_WND_BASE | PCIBR_ENABLE;
+#endif
+
+#if defined CONFIG_ADS8272
+ immap->im_siu_conf.siu_82xx.sc_siumcr =
+ (immap->im_siu_conf.siu_82xx.sc_siumcr &
+ ~(SIUMCR_BBD | SIUMCR_ESE | SIUMCR_PBSE |
+ SIUMCR_CDIS | SIUMCR_DPPC11 | SIUMCR_L2CPC11 |
+ SIUMCR_LBPC11 | SIUMCR_APPC11 |
+ SIUMCR_CS10PC11 | SIUMCR_BCTLC11 | SIUMCR_MMR11)) |
+ SIUMCR_DPPC11 | SIUMCR_L2CPC01 | SIUMCR_LBPC00 |
+ SIUMCR_APPC10 | SIUMCR_CS10PC00 |
+ SIUMCR_BCTLC00 | SIUMCR_MMR11 ;
+
+#elif defined CONFIG_PQ2FADS
+ /*
+ * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
+ * and local bus for PCI (SIUMCR [LBPC]).
+ */
+ immap->im_siu_conf.siu_82xx.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
+ ~(SIUMCR_L2PC11 | SIUMCR_LBPC11 | SIUMCR_CS10PC11 | SIUMCR_APPC11) |
+ SIUMCR_BBD | SIUMCR_LBPC01 | SIUMCR_DPPC11 | SIUMCR_APPC10;
+#endif
+ /* Enable PCI */
+ immap->im_pci.pci_gcr = cpu_to_le32(PCIGCR_PCI_BUS_EN);
+
+ pci_div = ( (sccr & SCCR_PCI_MODCK) ? 2 : 1) *
+ ( ( (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT) + 1);
+ freq = (uint)((2*binfo->bi_cpmfreq)/(pci_div));
+ time = (int)666666/freq;
+ /* due to PCI Local Bus spec, some devices needs to wait such a long
+ time after RST deassertion. More specifically, 0.508s for 66MHz & twice more for 33 */
+ printk("%s: The PCI bus is %d Mhz.\nWaiting %s after deasserting RST...\n",__FILE__,freq,
+ (time==1) ? "0.5 seconds":"1 second" );
+
+ {
+ int i;
+ for(i=0;i<(500*time);i++)
+ udelay(1000);
+ }
+
+ /* setup ATU registers */
+ immap->im_pci.pci_pocmr0 = cpu_to_le32(POCMR_ENABLE | POCMR_PCI_IO |
+ ((~(M82xx_PCI_IO_SIZE - 1U)) >> POTA_ADDR_SHIFT));
+ immap->im_pci.pci_potar0 = cpu_to_le32(M82xx_PCI_LOWER_IO >> POTA_ADDR_SHIFT);
+ immap->im_pci.pci_pobar0 = cpu_to_le32(M82xx_PCI_IO_BASE >> POTA_ADDR_SHIFT);
+
+ /* Set-up non-prefetchable window */
+ immap->im_pci.pci_pocmr1 = cpu_to_le32(POCMR_ENABLE | ((~(M82xx_PCI_MMIO_SIZE-1U)) >> POTA_ADDR_SHIFT));
+ immap->im_pci.pci_potar1 = cpu_to_le32(M82xx_PCI_LOWER_MMIO >> POTA_ADDR_SHIFT);
+ immap->im_pci.pci_pobar1 = cpu_to_le32((M82xx_PCI_LOWER_MMIO - M82xx_PCI_MMIO_OFFSET) >> POTA_ADDR_SHIFT);
+
+ /* Set-up prefetchable window */
+ immap->im_pci.pci_pocmr2 = cpu_to_le32(POCMR_ENABLE |POCMR_PREFETCH_EN |
+ (~(M82xx_PCI_MEM_SIZE-1U) >> POTA_ADDR_SHIFT));
+ immap->im_pci.pci_potar2 = cpu_to_le32(M82xx_PCI_LOWER_MEM >> POTA_ADDR_SHIFT);
+ immap->im_pci.pci_pobar2 = cpu_to_le32((M82xx_PCI_LOWER_MEM - M82xx_PCI_MEM_OFFSET) >> POTA_ADDR_SHIFT);
+
+ /* Inbound transactions from PCI memory space */
+ immap->im_pci.pci_picmr0 = cpu_to_le32(PICMR_ENABLE | PICMR_PREFETCH_EN |
+ ((~(M82xx_PCI_SLAVE_MEM_SIZE-1U)) >> PITA_ADDR_SHIFT));
+ immap->im_pci.pci_pibar0 = cpu_to_le32(M82xx_PCI_SLAVE_MEM_BUS >> PITA_ADDR_SHIFT);
+ immap->im_pci.pci_pitar0 = cpu_to_le32(M82xx_PCI_SLAVE_MEM_LOCAL>> PITA_ADDR_SHIFT);
+
+#if defined CONFIG_ADS8272
+ /* PCI int highest prio */
+ immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x01236745;
+#elif defined CONFIG_PQ2FADS
+ immap->im_siu_conf.siu_82xx.sc_ppc_alrh = 0x03124567;
+#endif
+ /* park bus on PCI */
+ immap->im_siu_conf.siu_82xx.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
+
+ /* Enable bus mastering and inbound memory transactions */
+ early_read_config_dword(hose, hose->first_busno, 0, PCI_COMMAND, &val);
+ val &= 0xffff0000;
+ val |= PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER;
+ early_write_config_dword(hose, hose->first_busno, 0, PCI_COMMAND, val);
+
+}
+
+void __init pq2_find_bridges(void)
+{
+ extern int pci_assign_all_busses;
+ struct pci_controller * hose;
+ int host_bridge;
+
+ pci_assign_all_busses = 1;
+
+ hose = pcibios_alloc_controller();
+
+ if (!hose)
+ return;
+
+ ppc_md.pci_swizzle = common_swizzle;
+
+ hose->first_busno = 0;
+ hose->bus_offset = 0;
+ hose->last_busno = 0xff;
+
+#ifdef CONFIG_ADS8272
+ hose->set_cfg_type = 1;
+#endif
+
+ setup_m8260_indirect_pci(hose,
+ (unsigned long)&cpm2_immr->im_pci.pci_cfg_addr,
+ (unsigned long)&cpm2_immr->im_pci.pci_cfg_data);
+
+ /* Make sure it is a supported bridge */
+ early_read_config_dword(hose,
+ 0,
+ PCI_DEVFN(0,0),
+ PCI_VENDOR_ID,
+ &host_bridge);
+ switch (host_bridge) {
+ case PCI_DEVICE_ID_MPC8265:
+ break;
+ case PCI_DEVICE_ID_MPC8272:
+ break;
+ default:
+ printk("Attempting to use unrecognized host bridge ID"
+ " 0x%08x.\n", host_bridge);
+ break;
+ }
+
+ pq2ads_setup_pci(hose);
+
+ hose->io_space.start = M82xx_PCI_LOWER_IO;
+ hose->io_space.end = M82xx_PCI_UPPER_IO;
+ hose->mem_space.start = M82xx_PCI_LOWER_MEM;
+ hose->mem_space.end = M82xx_PCI_UPPER_MMIO;
+ hose->pci_mem_offset = M82xx_PCI_MEM_OFFSET;
+
+ isa_io_base =
+ (unsigned long) ioremap(M82xx_PCI_IO_BASE,
+ M82xx_PCI_IO_SIZE);
+ hose->io_base_virt = (void *) isa_io_base;
+
+ /* setup resources */
+ pci_init_resource(&hose->mem_resources[0],
+ M82xx_PCI_LOWER_MEM,
+ M82xx_PCI_UPPER_MEM,
+ IORESOURCE_MEM|IORESOURCE_PREFETCH, "PCI prefetchable memory");
+
+ pci_init_resource(&hose->mem_resources[1],
+ M82xx_PCI_LOWER_MMIO,
+ M82xx_PCI_UPPER_MMIO,
+ IORESOURCE_MEM, "PCI memory");
+
+ pci_init_resource(&hose->io_resource,
+ M82xx_PCI_LOWER_IO,
+ M82xx_PCI_UPPER_IO,
+ IORESOURCE_IO | 1, "PCI I/O");
+
+ ppc_md.pci_exclude_device = pq2pci_exclude_device;
+ hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+ ppc_md.pci_map_irq = pq2pci_map_irq;
+ ppc_md.pcibios_fixup = NULL;
+ ppc_md.pcibios_fixup_bus = NULL;
+
+}
diff --git a/arch/ppc/syslib/m82xx_pci.h b/arch/ppc/syslib/m82xx_pci.h
new file mode 100644
index 0000000..924f73f
--- /dev/null
+++ b/arch/ppc/syslib/m82xx_pci.h
@@ -0,0 +1,92 @@
+
+#ifndef _PPC_KERNEL_M82XX_PCI_H
+#define _PPC_KERNEL_M82XX_PCI_H
+
+#include <asm/m8260_pci.h>
+/*
+ * Local->PCI map (from CPU) controlled by
+ * MPC826x master window
+ *
+ * 0xF6000000 - 0xF7FFFFFF IO space
+ * 0x80000000 - 0xBFFFFFFF CPU2PCI memory space PCIBR0
+ *
+ * 0x80000000 - 0x9FFFFFFF PCI Mem with prefetch (Outbound ATU #1)
+ * 0xA0000000 - 0xBFFFFFFF PCI Mem w/o prefetch (Outbound ATU #2)
+ * 0xF6000000 - 0xF7FFFFFF 32-bit PCI IO (Outbound ATU #3)
+ *
+ * PCI->Local map (from PCI)
+ * MPC826x slave window controlled by
+ *
+ * 0x00000000 - 0x07FFFFFF MPC826x local memory (Inbound ATU #1)
+ */
+
+/*
+ * Slave window that allows PCI masters to access MPC826x local memory.
+ * This window is set up using the first set of Inbound ATU registers
+ */
+
+#ifndef M82xx_PCI_SLAVE_MEM_LOCAL
+#define M82xx_PCI_SLAVE_MEM_LOCAL (((struct bd_info *)__res)->bi_memstart)
+#define M82xx_PCI_SLAVE_MEM_BUS (((struct bd_info *)__res)->bi_memstart)
+#define M82xx_PCI_SLAVE_MEM_SIZE (((struct bd_info *)__res)->bi_memsize)
+#endif
+
+/*
+ * This is the window that allows the CPU to access PCI address space.
+ * It will be setup with the SIU PCIBR0 register. All three PCI master
+ * windows, which allow the CPU to access PCI prefetch, non prefetch,
+ * and IO space (see below), must all fit within this window.
+ */
+
+#ifndef M82xx_PCI_LOWER_MEM
+#define M82xx_PCI_LOWER_MEM 0x80000000
+#define M82xx_PCI_UPPER_MEM 0x9fffffff
+#define M82xx_PCI_MEM_OFFSET 0x00000000
+#define M82xx_PCI_MEM_SIZE 0x20000000
+#endif
+
+#ifndef M82xx_PCI_LOWER_MMIO
+#define M82xx_PCI_LOWER_MMIO 0xa0000000
+#define M82xx_PCI_UPPER_MMIO 0xafffffff
+#define M82xx_PCI_MMIO_OFFSET 0x00000000
+#define M82xx_PCI_MMIO_SIZE 0x20000000
+#endif
+
+#ifndef M82xx_PCI_LOWER_IO
+#define M82xx_PCI_LOWER_IO 0x00000000
+#define M82xx_PCI_UPPER_IO 0x01ffffff
+#define M82xx_PCI_IO_BASE 0xf6000000
+#define M82xx_PCI_IO_SIZE 0x02000000
+#endif
+
+#ifndef M82xx_PCI_PRIM_WND_SIZE
+#define M82xx_PCI_PRIM_WND_SIZE ~(M82xx_PCI_IO_SIZE - 1U)
+#define M82xx_PCI_PRIM_WND_BASE (M82xx_PCI_IO_BASE)
+#endif
+
+#ifndef M82xx_PCI_SEC_WND_SIZE
+#define M82xx_PCI_SEC_WND_SIZE ~(M82xx_PCI_MEM_SIZE + M82xx_PCI_MMIO_SIZE - 1U)
+#define M82xx_PCI_SEC_WND_BASE (M82xx_PCI_LOWER_MEM)
+#endif
+
+#ifndef POTA_ADDR_SHIFT
+#define POTA_ADDR_SHIFT 12
+#endif
+
+#ifndef PITA_ADDR_SHIFT
+#define PITA_ADDR_SHIFT 12
+#endif
+
+#ifndef _IO_BASE
+#define _IO_BASE isa_io_base
+#endif
+
+#ifdef CONFIG_8260_PCI9
+struct pci_controller;
+extern void setup_m8260_indirect_pci(struct pci_controller* hose,
+ u32 cfg_addr, u32 cfg_data);
+#else
+#define setup_m8260_indirect_pci setup_indirect_pci
+#endif
+
+#endif /* _PPC_KERNEL_M8260_PCI_H */
diff --git a/include/asm-ppc/cpm2.h b/include/asm-ppc/cpm2.h
index 42fd106..c5883db 100644
--- a/include/asm-ppc/cpm2.h
+++ b/include/asm-ppc/cpm2.h
@@ -1039,6 +1039,52 @@
#define CMXSCR_TS4CS_CLK7 0x00000006 /* SCC4 Tx Clock Source is CLK7 */
#define CMXSCR_TS4CS_CLK8 0x00000007 /* SCC4 Tx Clock Source is CLK8 */
+/*-----------------------------------------------------------------------
+ * SIUMCR - SIU Module Configuration Register 4-31
+ */
+#define SIUMCR_BBD 0x80000000 /* Bus Busy Disable */
+#define SIUMCR_ESE 0x40000000 /* External Snoop Enable */
+#define SIUMCR_PBSE 0x20000000 /* Parity Byte Select Enable */
+#define SIUMCR_CDIS 0x10000000 /* Core Disable */
+#define SIUMCR_DPPC00 0x00000000 /* Data Parity Pins Configuration*/
+#define SIUMCR_DPPC01 0x04000000 /* - " - */
+#define SIUMCR_DPPC10 0x08000000 /* - " - */
+#define SIUMCR_DPPC11 0x0c000000 /* - " - */
+#define SIUMCR_L2CPC00 0x00000000 /* L2 Cache Pins Configuration */
+#define SIUMCR_L2CPC01 0x01000000 /* - " - */
+#define SIUMCR_L2CPC10 0x02000000 /* - " - */
+#define SIUMCR_L2CPC11 0x03000000 /* - " - */
+#define SIUMCR_LBPC00 0x00000000 /* Local Bus Pins Configuration */
+#define SIUMCR_LBPC01 0x00400000 /* - " - */
+#define SIUMCR_LBPC10 0x00800000 /* - " - */
+#define SIUMCR_LBPC11 0x00c00000 /* - " - */
+#define SIUMCR_APPC00 0x00000000 /* Address Parity Pins Configuration*/
+#define SIUMCR_APPC01 0x00100000 /* - " - */
+#define SIUMCR_APPC10 0x00200000 /* - " - */
+#define SIUMCR_APPC11 0x00300000 /* - " - */
+#define SIUMCR_CS10PC00 0x00000000 /* CS10 Pin Configuration */
+#define SIUMCR_CS10PC01 0x00040000 /* - " - */
+#define SIUMCR_CS10PC10 0x00080000 /* - " - */
+#define SIUMCR_CS10PC11 0x000c0000 /* - " - */
+#define SIUMCR_BCTLC00 0x00000000 /* Buffer Control Configuration */
+#define SIUMCR_BCTLC01 0x00010000 /* - " - */
+#define SIUMCR_BCTLC10 0x00020000 /* - " - */
+#define SIUMCR_BCTLC11 0x00030000 /* - " - */
+#define SIUMCR_MMR00 0x00000000 /* Mask Masters Requests */
+#define SIUMCR_MMR01 0x00004000 /* - " - */
+#define SIUMCR_MMR10 0x00008000 /* - " - */
+#define SIUMCR_MMR11 0x0000c000 /* - " - */
+#define SIUMCR_LPBSE 0x00002000 /* LocalBus Parity Byte Select Enable*/
+
+/*-----------------------------------------------------------------------
+ * SCCR - System Clock Control Register 9-8
+*/
+#define SCCR_PCI_MODE 0x00000100 /* PCI Mode */
+#define SCCR_PCI_MODCK 0x00000080 /* Value of PCI_MODCK pin */
+#define SCCR_PCIDF_MSK 0x00000078 /* PCI division factor */
+#define SCCR_PCIDF_SHIFT 3
+
+
#endif /* __CPM2__ */
#endif /* __KERNEL__ */
diff --git a/include/asm-ppc/m8260_pci.h b/include/asm-ppc/m8260_pci.h
index 163a6b9..bf9e05d 100644
--- a/include/asm-ppc/m8260_pci.h
+++ b/include/asm-ppc/m8260_pci.h
@@ -19,6 +19,7 @@
* Define the vendor/device ID for the MPC8265.
*/
#define PCI_DEVICE_ID_MPC8265 ((0x18C0 << 16) | PCI_VENDOR_ID_MOTOROLA)
+#define PCI_DEVICE_ID_MPC8272 ((0x18C1 << 16) | PCI_VENDOR_ID_MOTOROLA)
#define M8265_PCIBR0 0x101ac
#define M8265_PCIBR1 0x101b0
diff --git a/include/asm-ppc/mpc8260.h b/include/asm-ppc/mpc8260.h
index d820894..89eb8a2 100644
--- a/include/asm-ppc/mpc8260.h
+++ b/include/asm-ppc/mpc8260.h
@@ -41,7 +41,7 @@
#endif
#ifdef CONFIG_PCI_8260
-#include <syslib/m8260_pci.h>
+#include <syslib/m82xx_pci.h>
#endif
/* Make sure the memory translation stuff is there if PCI not used.