There exists blackfin hardware with PCI support, but the support
currently in the kernel fails to build starting with:
<-- snip -->
...
CC init/main.o
In file included from dma-mapping.h:5,
from dma-mapping.h:52,
from dmaengine.h:29,
from skbuff.h:29,
from netlink.h:155,
from genetlink.h:4,
from genetlink.h:4,
from taskstats_kern.h:12,
from main.c:46:
dma-mapping.h: In function 'dma_supported': ma-mapping.h:24:
error: implicit declaration of function 'pci_dma_supported'
...
make[2]: *** [init/main.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <[email protected]>
---
3bdc07c86b6fd5fc18b7676a75c3ff907e00e807
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 2e7515e..77a5bdf 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -702,6 +702,7 @@ menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
config PCI
bool "PCI support"
+ depends on BROKEN
help
Support for PCI bus.
On Tue, 19 Aug 2008, Adrian Bunk wrote:
> There exists blackfin hardware with PCI support, but the support
> currently in the kernel fails to build starting with:
>
> <-- snip -->
>
> ...
> CC init/main.o
> In file included from dma-mapping.h:5,
> from dma-mapping.h:52,
> from dmaengine.h:29,
> from skbuff.h:29,
> from netlink.h:155,
> from genetlink.h:4,
> from genetlink.h:4,
> from taskstats_kern.h:12,
> from main.c:46:
> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24:
> error: implicit declaration of function 'pci_dma_supported'
> ...
> make[2]: *** [init/main.o] Error 1
>
>
> <-- snip -->
>
> Signed-off-by: Adrian Bunk <[email protected]>
>
> ---
> 3bdc07c86b6fd5fc18b7676a75c3ff907e00e807
> diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
> index 2e7515e..77a5bdf 100644
> --- a/arch/m68knommu/Kconfig
> +++ b/arch/m68knommu/Kconfig
> @@ -702,6 +702,7 @@ menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
>
> config PCI
> bool "PCI support"
> + depends on BROKEN
> help
> Support for PCI bus.
blackfin != m68knommu
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
On Tue, Aug 19, 2008 at 04:13:33PM +0200, Geert Uytterhoeven wrote:
> On Tue, 19 Aug 2008, Adrian Bunk wrote:
> > There exists blackfin hardware with PCI support, but the support
> > currently in the kernel fails to build starting with:
> >
> > <-- snip -->
> >
> > ...
> > CC init/main.o
> > In file included from dma-mapping.h:5,
> > from dma-mapping.h:52,
> > from dmaengine.h:29,
> > from skbuff.h:29,
> > from netlink.h:155,
> > from genetlink.h:4,
> > from genetlink.h:4,
> > from taskstats_kern.h:12,
> > from main.c:46:
> > dma-mapping.h: In function 'dma_supported': ma-mapping.h:24:
> > error: implicit declaration of function 'pci_dma_supported'
> > ...
> > make[2]: *** [init/main.o] Error 1
> >
> >
> > <-- snip -->
> >
> > Signed-off-by: Adrian Bunk <[email protected]>
> >
> > ---
> > 3bdc07c86b6fd5fc18b7676a75c3ff907e00e807
> > diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
> > index 2e7515e..77a5bdf 100644
> > --- a/arch/m68knommu/Kconfig
> > +++ b/arch/m68knommu/Kconfig
> > @@ -702,6 +702,7 @@ menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
> >
> > config PCI
> > bool "PCI support"
> > + depends on BROKEN
> > help
> > Support for PCI bus.
>
> blackfin != m68knommu
s/blackfin/m68knommu/ in the patch description (relict from copying it
from the other similar patch, see http://lkml.org/lkml/2008/8/19/196).
The error message and the patch are for m68knommu.
> Gr{oetje,eeting}s,
>
> Geert
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Tue, Aug 19, 2008 at 04:47:18PM +0300, Adrian Bunk wrote:
> There exists blackfin hardware with PCI support, but the support
^^^^^^^^
m68knommu
> currently in the kernel fails to build starting with:
Hopefully someone fixes it instead of just acking this patch.
--
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
On Tue, Aug 19, 2008 at 11:05 PM, Matthew Wilcox <[email protected]> wrote:
> On Tue, Aug 19, 2008 at 04:47:18PM +0300, Adrian Bunk wrote:
>> There exists blackfin hardware with PCI support, but the support
> ^^^^^^^^
> m68knommu
I will take care of Blackfin parts.
>> currently in the kernel fails to build starting with:
>
> Hopefully someone fixes it instead of just acking this patch.
>
Sorry for the delay, I was out on my vacation this week.
Thanks all
-Bryan
Hi Adrian,
Adrian Bunk wrote:
> There exists blackfin hardware with PCI support, but the support
> currently in the kernel fails to build starting with:
>
> <-- snip -->
>
> ...
> CC init/main.o
> In file included from dma-mapping.h:5,
> from dma-mapping.h:52,
> from dmaengine.h:29,
> from skbuff.h:29,
> from netlink.h:155,
> from genetlink.h:4,
> from genetlink.h:4,
> from taskstats_kern.h:12,
> from main.c:46:
> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24:
> error: implicit declaration of function 'pci_dma_supported'
> ...
> make[2]: *** [init/main.o] Error 1
I think we should just remove the underlying comempci access
code which is the only user of this (arch/m68knommu/kernel/comempci.c).
Nobody has used it in a very long time. And the hardware itself is
old, and completely brain-damaged by design.
Regards
Greg
> <-- snip -->
>
> Signed-off-by: Adrian Bunk <[email protected]>
>
> ---
> 3bdc07c86b6fd5fc18b7676a75c3ff907e00e807
> diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
> index 2e7515e..77a5bdf 100644
> --- a/arch/m68knommu/Kconfig
> +++ b/arch/m68knommu/Kconfig
> @@ -702,6 +702,7 @@ menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
>
> config PCI
> bool "PCI support"
> + depends on BROKEN
> help
> Support for PCI bus.
>
>
>
--
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [email protected]
SnapGear -- a Secure Computing Company PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
On Mon, Aug 25, 2008 at 04:16:12PM +1000, Greg Ungerer wrote:
>
> Hi Adrian,
>
> Adrian Bunk wrote:
>> There exists blackfin hardware with PCI support, but the support
>> currently in the kernel fails to build starting with:
>>
>> <-- snip -->
>>
>> ...
>> CC init/main.o
>> In file included from dma-mapping.h:5,
>> from dma-mapping.h:52,
>> from dmaengine.h:29,
>> from skbuff.h:29,
>> from netlink.h:155,
>> from genetlink.h:4,
>> from genetlink.h:4,
>> from taskstats_kern.h:12,
>> from main.c:46:
>> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24: error:
>> implicit declaration of function 'pci_dma_supported'
>> ...
>> make[2]: *** [init/main.o] Error 1
>
> I think we should just remove the underlying comempci access
> code which is the only user of this (arch/m68knommu/kernel/comempci.c).
> Nobody has used it in a very long time. And the hardware itself is
> old, and completely brain-damaged by design.
A patch for removing the comempci code is below.
It's a bit suspicious that asm/elia.h is now removed since comempci.c
was the only user. What's the sttus of the eLIA platform?
But COMEMPCI fails with a different error - this init/main.o build error
is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency of PCI
on BROKEN is still required (unless it gets fixed).
> Regards
> Greg
cu
Adrian
<-- snip -->
The COMEMPCI code didn't even compile.
Greg Ungerer said:
I think we should just remove the underlying comempci access
code which is the only user of this (arch/m68knommu/kernel/comempci.c).
Nobody has used it in a very long time. And the hardware itself is
old, and completely brain-damaged by design.
Signed-off-by: Adrian Bunk <[email protected]>
---
arch/m68knommu/Kconfig | 4
arch/m68knommu/include/asm/anchor.h | 112 ---
arch/m68knommu/include/asm/elia.h | 41 -
arch/m68knommu/include/asm/mcfpci.h | 119 ---
arch/m68knommu/include/asm/pci.h | 23
arch/m68knommu/kernel/Makefile | 1
arch/m68knommu/kernel/comempci.c | 980 ----------------------------
7 files changed, 1280 deletions(-)
6c2fed7cd1aad31f7c1518cfcb0d7d8f438ba8a4
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 77a5bdf..15ffd55 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -706,10 +706,6 @@ config PCI
help
Support for PCI bus.
-config COMEMPCI
- bool "CO-MEM lite PCI controller support"
- depends on (M5307 || M5407)
-
source "drivers/pci/Kconfig"
source "drivers/pcmcia/Kconfig"
diff --git a/arch/m68knommu/include/asm/anchor.h b/arch/m68knommu/include/asm/anchor.h
deleted file mode 100644
index 871c0d5..0000000
--- a/arch/m68knommu/include/asm/anchor.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/****************************************************************************/
-
-/*
- * anchor.h -- Anchor CO-MEM Lite PCI host bridge part.
- *
- * (C) Copyright 2000, Moreton Bay (http://www.moreton.com.au)
- */
-
-/****************************************************************************/
-#ifndef anchor_h
-#define anchor_h
-/****************************************************************************/
-
-/*
- * Define basic addressing info.
- */
-#if defined(CONFIG_M5407C3)
-#define COMEM_BASE 0xFFFF0000 /* Base of CO-MEM address space */
-#define COMEM_IRQ 25 /* IRQ of anchor part */
-#else
-#define COMEM_BASE 0x80000000 /* Base of CO-MEM address space */
-#define COMEM_IRQ 25 /* IRQ of anchor part */
-#endif
-
-/****************************************************************************/
-
-/*
- * 4-byte registers of CO-MEM, so adjust register addresses for
- * easy access. Handy macro for word access too.
- */
-#define LREG(a) ((a) >> 2)
-#define WREG(a) ((a) >> 1)
-
-
-/*
- * Define base addresses within CO-MEM Lite register address space.
- */
-#define COMEM_I2O 0x0000 /* I2O registers */
-#define COMEM_OPREGS 0x0400 /* Operation registers */
-#define COMEM_PCIBUS 0x2000 /* Direct access to PCI bus */
-#define COMEM_SHMEM 0x4000 /* Shared memory region */
-
-#define COMEM_SHMEMSIZE 0x4000 /* Size of shared memory */
-
-
-/*
- * Define CO-MEM Registers.
- */
-#define COMEM_I2OHISR 0x0030 /* I2O host interrupt status */
-#define COMEM_I2OHIMR 0x0034 /* I2O host interrupt mask */
-#define COMEM_I2OLISR 0x0038 /* I2O local interrupt status */
-#define COMEM_I2OLIMR 0x003c /* I2O local interrupt mask */
-#define COMEM_IBFPFIFO 0x0040 /* I2O inbound free/post FIFO */
-#define COMEM_OBPFFIFO 0x0044 /* I2O outbound post/free FIFO */
-#define COMEM_IBPFFIFO 0x0048 /* I2O inbound post/free FIFO */
-#define COMEM_OBFPFIFO 0x004c /* I2O outbound free/post FIFO */
-
-#define COMEM_DAHBASE 0x0460 /* Direct access base address */
-
-#define COMEM_NVCMD 0x04a0 /* I2C serial command */
-#define COMEM_NVREAD 0x04a4 /* I2C serial read */
-#define COMEM_NVSTAT 0x04a8 /* I2C status */
-
-#define COMEM_DMALBASE 0x04b0 /* DMA local base address */
-#define COMEM_DMAHBASE 0x04b4 /* DMA host base address */
-#define COMEM_DMASIZE 0x04b8 /* DMA size */
-#define COMEM_DMACTL 0x04bc /* DMA control */
-
-#define COMEM_HCTL 0x04e0 /* Host control */
-#define COMEM_HINT 0x04e4 /* Host interrupt control/status */
-#define COMEM_HLDATA 0x04e8 /* Host to local data mailbox */
-#define COMEM_LINT 0x04f4 /* Local interrupt contole status */
-#define COMEM_LHDATA 0x04f8 /* Local to host data mailbox */
-
-#define COMEM_LBUSCFG 0x04fc /* Local bus configuration */
-
-
-/*
- * Commands and flags for use with Direct Access Register.
- */
-#define COMEM_DA_IACK 0x00000000 /* Interrupt acknowledge (read) */
-#define COMEM_DA_SPCL 0x00000010 /* Special cycle (write) */
-#define COMEM_DA_MEMRD 0x00000004 /* Memory read cycle */
-#define COMEM_DA_MEMWR 0x00000004 /* Memory write cycle */
-#define COMEM_DA_IORD 0x00000002 /* I/O read cycle */
-#define COMEM_DA_IOWR 0x00000002 /* I/O write cycle */
-#define COMEM_DA_CFGRD 0x00000006 /* Configuration read cycle */
-#define COMEM_DA_CFGWR 0x00000006 /* Configuration write cycle */
-
-#define COMEM_DA_ADDR(a) ((a) & 0xffffe000)
-
-#define COMEM_DA_OFFSET(a) ((a) & 0x00001fff)
-
-
-/*
- * The PCI bus will be limited in what slots will actually be used.
- * Define valid device numbers for different boards.
- */
-#if defined(CONFIG_M5407C3)
-#define COMEM_MINDEV 14 /* Minimum valid DEVICE */
-#define COMEM_MAXDEV 14 /* Maximum valid DEVICE */
-#define COMEM_BRIDGEDEV 15 /* Slot bridge is in */
-#else
-#define COMEM_MINDEV 0 /* Minimum valid DEVICE */
-#define COMEM_MAXDEV 3 /* Maximum valid DEVICE */
-#endif
-
-#define COMEM_MAXPCI (COMEM_MAXDEV+1) /* Maximum PCI devices */
-
-
-/****************************************************************************/
-#endif /* anchor_h */
diff --git a/arch/m68knommu/include/asm/elia.h b/arch/m68knommu/include/asm/elia.h
deleted file mode 100644
index e037d4e..0000000
--- a/arch/m68knommu/include/asm/elia.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/****************************************************************************/
-
-/*
- * elia.h -- Lineo (formerly Moreton Bay) eLIA platform support.
- *
- * (C) Copyright 1999-2000, Moreton Bay (http://www.moreton.com.au)
- * (C) Copyright 1999-2000, Lineo (http://www.lineo.com)
- */
-
-/****************************************************************************/
-#ifndef elia_h
-#define elia_h
-/****************************************************************************/
-
-#include <asm/coldfire.h>
-
-#ifdef CONFIG_eLIA
-
-/*
- * The serial port DTR and DCD lines are also on the Parallel I/O
- * as well, so define those too.
- */
-
-#define eLIA_DCD1 0x0001
-#define eLIA_DCD0 0x0002
-#define eLIA_DTR1 0x0004
-#define eLIA_DTR0 0x0008
-
-#define eLIA_PCIRESET 0x0020
-
-/*
- * Kernel macros to set and unset the LEDs.
- */
-#ifndef __ASSEMBLY__
-extern unsigned short ppdata;
-#endif /* __ASSEMBLY__ */
-
-#endif /* CONFIG_eLIA */
-
-/****************************************************************************/
-#endif /* elia_h */
diff --git a/arch/m68knommu/include/asm/mcfpci.h b/arch/m68knommu/include/asm/mcfpci.h
deleted file mode 100644
index f1507dd..0000000
--- a/arch/m68knommu/include/asm/mcfpci.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/****************************************************************************/
-
-/*
- * mcfpci.h -- PCI bridge on ColdFire eval boards.
- *
- * (C) Copyright 2000, Greg Ungerer ([email protected])
- * (C) Copyright 2000, Lineo Inc. (http://www.lineo.com)
- */
-
-/****************************************************************************/
-#ifndef mcfpci_h
-#define mcfpci_h
-/****************************************************************************/
-
-
-#ifdef CONFIG_PCI
-
-/*
- * Address regions in the PCI address space are not mapped into the
- * normal memory space of the ColdFire. They must be accessed via
- * handler routines. This is easy for I/O space (inb/outb/etc) but
- * needs some code changes to support ordinary memory. Interrupts
- * also need to be vectored through the PCI handler first, then it
- * will call the actual driver sub-handlers.
- */
-
-/*
- * Un-define all the standard I/O access routines.
- */
-#undef inb
-#undef inw
-#undef inl
-#undef inb_p
-#undef inw_p
-#undef insb
-#undef insw
-#undef insl
-#undef outb
-#undef outw
-#undef outl
-#undef outb_p
-#undef outw_p
-#undef outsb
-#undef outsw
-#undef outsl
-
-#undef request_irq
-#undef free_irq
-
-#undef bus_to_virt
-#undef virt_to_bus
-
-
-/*
- * Re-direct all I/O memory accesses functions to PCI specific ones.
- */
-#define inb pci_inb
-#define inw pci_inw
-#define inl pci_inl
-#define inb_p pci_inb
-#define inw_p pci_inw
-#define insb pci_insb
-#define insw pci_insw
-#define insl pci_insl
-
-#define outb pci_outb
-#define outw pci_outw
-#define outl pci_outl
-#define outb_p pci_outb
-#define outw_p pci_outw
-#define outsb pci_outsb
-#define outsw pci_outsw
-#define outsl pci_outsl
-
-#define request_irq pci_request_irq
-#define free_irq pci_free_irq
-
-#define virt_to_bus pci_virt_to_bus
-#define bus_to_virt pci_bus_to_virt
-
-#define CONFIG_COMEMPCI 1
-
-
-/*
- * Prototypes of the real PCI functions (defined in bios32.c).
- */
-unsigned char pci_inb(unsigned int addr);
-unsigned short pci_inw(unsigned int addr);
-unsigned int pci_inl(unsigned int addr);
-void pci_insb(void *addr, void *buf, int len);
-void pci_insw(void *addr, void *buf, int len);
-void pci_insl(void *addr, void *buf, int len);
-
-void pci_outb(unsigned char val, unsigned int addr);
-void pci_outw(unsigned short val, unsigned int addr);
-void pci_outl(unsigned int val, unsigned int addr);
-void pci_outsb(void *addr, void *buf, int len);
-void pci_outsw(void *addr, void *buf, int len);
-void pci_outsl(void *addr, void *buf, int len);
-
-int pci_request_irq(unsigned int irq,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long flags,
- const char *device,
- void *dev_id);
-void pci_free_irq(unsigned int irq, void *dev_id);
-
-void *pci_bmalloc(int size);
-void pci_bmfree(void *bmp, int len);
-void pci_copytoshmem(unsigned long bmp, void *src, int size);
-void pci_copyfromshmem(void *dst, unsigned long bmp, int size);
-unsigned long pci_virt_to_bus(volatile void *address);
-void *pci_bus_to_virt(unsigned long address);
-void pci_bmcpyto(void *dst, void *src, int len);
-void pci_bmcpyfrom(void *dst, void *src, int len);
-
-#endif /* CONFIG_PCI */
-/****************************************************************************/
-#endif /* mcfpci_h */
diff --git a/arch/m68knommu/include/asm/pci.h b/arch/m68knommu/include/asm/pci.h
index a13f3cc..8031d1d 100644
--- a/arch/m68knommu/include/asm/pci.h
+++ b/arch/m68knommu/include/asm/pci.h
@@ -3,27 +3,4 @@
#include <asm-m68k/pci.h>
-#ifdef CONFIG_COMEMPCI
-/*
- * These are pretty much arbitary with the CoMEM implementation.
- * We have the whole address space to ourselves.
- */
-#define PCIBIOS_MIN_IO 0x100
-#define PCIBIOS_MIN_MEM 0x00010000
-
-#define pcibios_scan_all_fns(a, b) 0
-
-/*
- * Return whether the given PCI device DMA address mask can
- * be supported properly. For example, if your device can
- * only drive the low 24-bits during PCI bus mastering, then
- * you would pass 0x00ffffff as the mask to this function.
- */
-static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
-{
- return 1;
-}
-
-#endif /* CONFIG_COMEMPCI */
-
#endif /* M68KNOMMU_PCI_H */
diff --git a/arch/m68knommu/kernel/Makefile b/arch/m68knommu/kernel/Makefile
index f0eab3d..37c3fc0 100644
--- a/arch/m68knommu/kernel/Makefile
+++ b/arch/m68knommu/kernel/Makefile
@@ -8,4 +8,3 @@ obj-y += dma.o entry.o init_task.o irq.o m68k_ksyms.o process.o ptrace.o \
setup.o signal.o syscalltable.o sys_m68k.o time.o traps.o
obj-$(CONFIG_MODULES) += module.o
-obj-$(CONFIG_COMEMPCI) += comempci.o
diff --git a/arch/m68knommu/kernel/comempci.c b/arch/m68knommu/kernel/comempci.c
deleted file mode 100644
index 0a68b5a..0000000
--- a/arch/m68knommu/kernel/comempci.c
+++ /dev/null
@@ -1,980 +0,0 @@
-/*****************************************************************************/
-
-/*
- * comemlite.c -- PCI access code for embedded CO-MEM Lite PCI controller.
- *
- * (C) Copyright 1999-2003, Greg Ungerer ([email protected]).
- * (C) Copyright 2000, Lineo (http://www.lineo.com)
- */
-
-/*****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/ptrace.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-#include <asm/coldfire.h>
-#include <asm/mcfsim.h>
-#include <asm/irq.h>
-#include <asm/anchor.h>
-
-#ifdef CONFIG_eLIA
-#include <asm/elia.h>
-#endif
-
-/*****************************************************************************/
-
-/*
- * Debug configuration defines. DEBUGRES sets debugging output for
- * the resource allocation phase. DEBUGPCI traces on pcibios_ function
- * calls, and DEBUGIO traces all accesses to devices on the PCI bus.
- */
-/*#define DEBUGRES 1*/
-/*#define DEBUGPCI 1*/
-/*#define DEBUGIO 1*/
-
-/*****************************************************************************/
-
-/*
- * PCI markers for bus present and active slots.
- */
-int pci_bus_is_present = 0;
-unsigned long pci_slotmask = 0;
-
-/*
- * We may or may not need to swap the bytes of PCI bus tranfers.
- * The endianess is re-roder automatically by the CO-MEM, but it
- * will get the wrong byte order for a pure data stream.
- */
-#define pci_byteswap 0
-
-
-/*
- * Resource tracking. The CO-MEM part creates a virtual address
- * space that all the PCI devices live in - it is not in any way
- * directly mapped into the ColdFire address space. So we can
- * really assign any resources we like to devices, as long as
- * they do not clash with other PCI devices.
- */
-unsigned int pci_iobase = PCIBIOS_MIN_IO; /* Arbitrary start address */
-unsigned int pci_membase = PCIBIOS_MIN_MEM; /* Arbitrary start address */
-
-#define PCI_MINIO 0x100 /* 256 byte minimum I/O */
-#define PCI_MINMEM 0x00010000 /* 64k minimum chunk */
-
-/*
- * The CO-MEM's shared memory segment is visible inside the PCI
- * memory address space. We need to keep track of the address that
- * this is mapped at, to setup the bus masters pointers.
- */
-unsigned int pci_shmemaddr;
-
-/*****************************************************************************/
-
-void pci_interrupt(int irq, void *id, struct pt_regs *fp);
-
-/*****************************************************************************/
-
-/*
- * Some platforms have custom ways of reseting the PCI bus.
- */
-
-void pci_resetbus(void)
-{
-#ifdef CONFIG_eLIA
- int i;
-
-#ifdef DEBUGPCI
- printk(KERN_DEBUG "pci_resetbus()\n");
-#endif
-
- *((volatile unsigned short *) (MCF_MBAR+MCFSIM_PADDR)) |= eLIA_PCIRESET;
- for (i = 0; (i < 1000); i++) {
- *((volatile unsigned short *) (MCF_MBAR + MCFSIM_PADAT)) =
- (ppdata | eLIA_PCIRESET);
- }
-
-
- *((volatile unsigned short *) (MCF_MBAR + MCFSIM_PADAT)) = ppdata;
-#endif
-}
-
-/*****************************************************************************/
-
-int pcibios_assign_resource_slot(int slot)
-{
- volatile unsigned long *rp;
- volatile unsigned char *ip;
- unsigned int idsel, addr, val, align, i;
- int bar;
-
-#ifdef DEBUGPCI
- printk(KERN_INFO "pcibios_assign_resource_slot(slot=%x)\n", slot);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- idsel = COMEM_DA_ADDR(0x1 << (slot + 16));
-
- /* Try to assign resource to each BAR */
- for (bar = 0; (bar < 6); bar++) {
- addr = COMEM_PCIBUS + PCI_BASE_ADDRESS_0 + (bar * 4);
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
- val = rp[LREG(addr)];
-#ifdef DEBUGRES
- printk(KERN_DEBUG "-----------------------------------"
- "-------------------------------------\n");
- printk(KERN_DEBUG "BAR[%d]: read=%08x ", bar, val);
-#endif
-
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
- rp[LREG(addr)] = 0xffffffff;
-
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
- val = rp[LREG(addr)];
-#ifdef DEBUGRES
- printk(KERN_DEBUG "write=%08x ", val);
-#endif
- if (val == 0) {
-#ifdef DEBUGRES
- printk(KERN_DEBUG "\n");
-#endif
- continue;
- }
-
- /* Determine space required by BAR */
- /* FIXME: this should go backwords from 0x80000000... */
- for (i = 0; (i < 32); i++) {
- if ((0x1 << i) & (val & 0xfffffffc))
- break;
- }
-
-#ifdef DEBUGRES
- printk(KERN_DEBUG "size=%08x(%d)\n", (0x1 << i), i);
-#endif
- i = 0x1 << i;
-
- /* Assign a resource */
- if (val & PCI_BASE_ADDRESS_SPACE_IO) {
- if (i < PCI_MINIO)
- i = PCI_MINIO;
-#ifdef DEBUGRES
- printk(KERN_DEBUG "BAR[%d]: IO size=%08x iobase=%08x\n",
- bar, i, pci_iobase);
-#endif
- if (i > 0xffff) {
- /* Invalid size?? */
- val = 0 | PCI_BASE_ADDRESS_SPACE_IO;
-#ifdef DEBUGRES
- printk(KERN_DEBUG "BAR[%d]: too big for IO??\n", bar);
-#endif
- } else {
- /* Check for un-alignment */
- if ((align = pci_iobase % i))
- pci_iobase += (i - align);
- val = pci_iobase | PCI_BASE_ADDRESS_SPACE_IO;
- pci_iobase += i;
- }
- } else {
- if (i < PCI_MINMEM)
- i = PCI_MINMEM;
-#ifdef DEBUGRES
- printk(KERN_DEBUG "BAR[%d]: MEMORY size=%08x membase=%08x\n",
- bar, i, pci_membase);
-#endif
- /* Check for un-alignment */
- if ((align = pci_membase % i))
- pci_membase += (i - align);
- val = pci_membase | PCI_BASE_ADDRESS_SPACE_MEMORY;
- pci_membase += i;
- }
-
- /* Write resource back into BAR register */
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
- rp[LREG(addr)] = val;
-#ifdef DEBUGRES
- printk(KERN_DEBUG "BAR[%d]: assigned bar=%08x\n", bar, val);
-#endif
- }
-
-#ifdef DEBUGRES
- printk(KERN_DEBUG "-----------------------------------"
- "-------------------------------------\n");
-#endif
-
- /* Assign IRQ if one is wanted... */
- ip = (volatile unsigned char *) (COMEM_BASE + COMEM_PCIBUS);
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
-
- addr = (PCI_INTERRUPT_PIN & 0xfc) + (~PCI_INTERRUPT_PIN & 0x03);
- if (ip[addr]) {
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
- addr = (PCI_INTERRUPT_LINE & 0xfc)+(~PCI_INTERRUPT_LINE & 0x03);
- ip[addr] = 25;
-#ifdef DEBUGRES
- printk(KERN_DEBUG "IRQ LINE=25\n");
-#endif
- }
-
- return(0);
-}
-
-/*****************************************************************************/
-
-int pcibios_enable_slot(int slot)
-{
- volatile unsigned long *rp;
- volatile unsigned short *wp;
- unsigned int idsel, addr;
- unsigned short cmd;
-
-#ifdef DEBUGPCI
- printk(KERN_DEBUG "pcibios_enbale_slot(slot=%x)\n", slot);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- wp = (volatile unsigned short *) COMEM_BASE;
- idsel = COMEM_DA_ADDR(0x1 << (slot + 16));
-
- /* Get current command settings */
- addr = COMEM_PCIBUS + PCI_COMMAND;
- addr = (addr & ~0x3) + (~addr & 0x02);
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
- cmd = wp[WREG(addr)];
- /*val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);*/
-
- /* Enable I/O and memory accesses to this device */
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
- cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
- wp[WREG(addr)] = cmd;
-
- return(0);
-}
-
-/*****************************************************************************/
-
-void pcibios_assign_resources(void)
-{
- volatile unsigned long *rp;
- unsigned long sel, id;
- int slot;
-
- rp = (volatile unsigned long *) COMEM_BASE;
-
- /*
- * Do a quick scan of the PCI bus and see what is here.
- */
- for (slot = COMEM_MINDEV; (slot <= COMEM_MAXDEV); slot++) {
- sel = COMEM_DA_CFGRD | COMEM_DA_ADDR(0x1 << (slot + 16));
- rp[LREG(COMEM_DAHBASE)] = sel;
- rp[LREG(COMEM_PCIBUS)] = 0; /* Clear bus */
- id = rp[LREG(COMEM_PCIBUS)];
- if ((id != 0) && ((id & 0xffff0000) != (sel & 0xffff0000))) {
- printk(KERN_INFO "PCI: slot=%d id=%08x\n", slot, (int) id);
- pci_slotmask |= 0x1 << slot;
- pcibios_assign_resource_slot(slot);
- pcibios_enable_slot(slot);
- }
- }
-}
-
-/*****************************************************************************/
-
-int pcibios_init(void)
-{
- volatile unsigned long *rp;
- unsigned long sel, id;
- int slot;
-
-#ifdef DEBUGPCI
- printk(KERN_DEBUG "pcibios_init()\n");
-#endif
-
- pci_resetbus();
-
- /*
- * Do some sort of basic check to see if the CO-MEM part
- * is present... This works ok, but I think we really need
- * something better...
- */
- rp = (volatile unsigned long *) COMEM_BASE;
- if ((rp[LREG(COMEM_LBUSCFG)] & 0xff) != 0x50) {
- printk(KERN_INFO "PCI: no PCI bus present\n");
- return(0);
- }
-
-#ifdef COMEM_BRIDGEDEV
- /*
- * Setup the PCI bridge device first. It needs resources too,
- * so that bus masters can get to its shared memory.
- */
- slot = COMEM_BRIDGEDEV;
- sel = COMEM_DA_CFGRD | COMEM_DA_ADDR(0x1 << (slot + 16));
- rp[LREG(COMEM_DAHBASE)] = sel;
- rp[LREG(COMEM_PCIBUS)] = 0; /* Clear bus */
- id = rp[LREG(COMEM_PCIBUS)];
- if ((id == 0) || ((id & 0xffff0000) == (sel & 0xffff0000))) {
- printk(KERN_INFO "PCI: no PCI bus bridge present\n");
- return(0);
- }
-
- printk(KERN_INFO "PCI: bridge device at slot=%d id=%08x\n", slot, (int) id);
- pci_slotmask |= 0x1 << slot;
- pci_shmemaddr = pci_membase;
- pcibios_assign_resource_slot(slot);
- pcibios_enable_slot(slot);
-#endif
-
- pci_bus_is_present = 1;
-
- /* Get PCI irq for local vectoring */
- if (request_irq(COMEM_IRQ, pci_interrupt, 0, "PCI bridge", NULL)) {
- printk(KERN_WARNING "PCI: failed to acquire interrupt %d\n", COMEM_IRQ);
- } else {
- mcf_autovector(COMEM_IRQ);
- }
-
- pcibios_assign_resources();
-
- return(0);
-}
-
-/*****************************************************************************/
-
-char *pcibios_setup(char *option)
-{
- /* Nothing for us to handle. */
- return(option);
-}
-/*****************************************************************************/
-
-void pcibios_fixup_bus(struct pci_bus *b)
-{
-}
-
-/*****************************************************************************/
-
-void pcibios_align_resource(void *data, struct resource *res,
- resource_size_t size, resource_size_t align)
-{
-}
-
-/*****************************************************************************/
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- int slot;
-
- slot = PCI_SLOT(dev->devfn);
- if ((dev->bus == 0) && (pci_slotmask & (1 << slot)))
- pcibios_enable_slot(slot);
- return(0);
-}
-
-/*****************************************************************************/
-
-/*
- * Local routines to interrcept the standard I/O and vector handling
- * code. Don't include this 'till now - initialization code above needs
- * access to the real code too.
- */
-#include <asm/mcfpci.h>
-
-/*****************************************************************************/
-
-void pci_outb(unsigned char val, unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned char *bp;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outb(val=%02x,addr=%x)\n", val, addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- bp = (volatile unsigned char *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
- addr = (addr & ~0x3) + (~addr & 0x03);
- bp[(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
-}
-
-/*****************************************************************************/
-
-void pci_outw(unsigned short val, unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned short *sp;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outw(val=%04x,addr=%x)\n", val, addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- sp = (volatile unsigned short *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
- addr = (addr & ~0x3) + (~addr & 0x02);
- if (pci_byteswap)
- val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);
- sp[WREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
-}
-
-/*****************************************************************************/
-
-void pci_outl(unsigned int val, unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned int *lp;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outl(val=%08x,addr=%x)\n", val, addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- lp = (volatile unsigned int *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
-
- if (pci_byteswap)
- val = (val << 24) | ((val & 0x0000ff00) << 8) |
- ((val & 0x00ff0000) >> 8) | (val >> 24);
-
- lp[LREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
-}
-
-/*****************************************************************************/
-
-unsigned long pci_blmask[] = {
- 0x000000e0,
- 0x000000d0,
- 0x000000b0,
- 0x00000070
-};
-
-unsigned char pci_inb(unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned char *bp;
- unsigned long r;
- unsigned char val;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_inb(addr=%x)\n", addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- bp = (volatile unsigned char *) COMEM_BASE;
-
- r = COMEM_DA_IORD | COMEM_DA_ADDR(addr) | pci_blmask[(addr & 0x3)];
- rp[LREG(COMEM_DAHBASE)] = r;
-
- addr = (addr & ~0x3) + (~addr & 0x3);
- val = bp[(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
- return(val);
-}
-
-/*****************************************************************************/
-
-unsigned long pci_bwmask[] = {
- 0x000000c0,
- 0x000000c0,
- 0x00000030,
- 0x00000030
-};
-
-unsigned short pci_inw(unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned short *sp;
- unsigned long r;
- unsigned short val;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_inw(addr=%x)", addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- r = COMEM_DA_IORD | COMEM_DA_ADDR(addr) | pci_bwmask[(addr & 0x3)];
- rp[LREG(COMEM_DAHBASE)] = r;
-
- sp = (volatile unsigned short *) COMEM_BASE;
- addr = (addr & ~0x3) + (~addr & 0x02);
- val = sp[WREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
- if (pci_byteswap)
- val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);
-#ifdef DEBUGIO
- printk(KERN_DEBUG "=%04x\n", val);
-#endif
- return(val);
-}
-
-/*****************************************************************************/
-
-unsigned int pci_inl(unsigned int addr)
-{
- volatile unsigned long *rp;
- volatile unsigned int *lp;
- unsigned int val;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_inl(addr=%x)", addr);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- lp = (volatile unsigned int *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(addr);
- val = lp[LREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
-
- if (pci_byteswap)
- val = (val << 24) | ((val & 0x0000ff00) << 8) |
- ((val & 0x00ff0000) >> 8) | (val >> 24);
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "=%08x\n", val);
-#endif
- return(val);
-}
-
-/*****************************************************************************/
-
-void pci_outsb(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned char *bp;
- unsigned char *dp = (unsigned char *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outsb(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
-
- a = (a & ~0x3) + (~a & 0x03);
- bp = (volatile unsigned char *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--)
- *bp = *dp++;
-}
-
-/*****************************************************************************/
-
-void pci_outsw(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned short *wp;
- unsigned short w, *dp = (unsigned short *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outsw(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
-
- a = (a & ~0x3) + (~a & 0x2);
- wp = (volatile unsigned short *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--) {
- w = *dp++;
- if (pci_byteswap)
- w = ((w & 0xff) << 8) | ((w >> 8) & 0xff);
- *wp = w;
- }
-}
-
-/*****************************************************************************/
-
-void pci_outsl(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned long *lp;
- unsigned long l, *dp = (unsigned long *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_outsl(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
-
- lp = (volatile unsigned long *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--) {
- l = *dp++;
- if (pci_byteswap)
- l = (l << 24) | ((l & 0x0000ff00) << 8) |
- ((l & 0x00ff0000) >> 8) | (l >> 24);
- *lp = l;
- }
-}
-
-/*****************************************************************************/
-
-void pci_insb(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned char *bp;
- unsigned char *dp = (unsigned char *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_insb(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
-
- a = (a & ~0x3) + (~a & 0x03);
- bp = (volatile unsigned char *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--)
- *dp++ = *bp;
-}
-
-/*****************************************************************************/
-
-void pci_insw(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned short *wp;
- unsigned short w, *dp = (unsigned short *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_insw(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
-
- a = (a & ~0x3) + (~a & 0x2);
- wp = (volatile unsigned short *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--) {
- w = *wp;
- if (pci_byteswap)
- w = ((w & 0xff) << 8) | ((w >> 8) & 0xff);
- *dp++ = w;
- }
-}
-
-/*****************************************************************************/
-
-void pci_insl(void *addr, void *buf, int len)
-{
- volatile unsigned long *rp;
- volatile unsigned long *lp;
- unsigned long l, *dp = (unsigned long *) buf;
- unsigned int a = (unsigned int) addr;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_insl(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
-#endif
-
- rp = (volatile unsigned long *) COMEM_BASE;
- rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
-
- lp = (volatile unsigned long *)
- (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
-
- while (len--) {
- l = *lp;
- if (pci_byteswap)
- l = (l << 24) | ((l & 0x0000ff00) << 8) |
- ((l & 0x00ff0000) >> 8) | (l >> 24);
- *dp++ = l;
- }
-}
-
-/*****************************************************************************/
-
-struct pci_localirqlist {
- void (*handler)(int, void *, struct pt_regs *);
- const char *device;
- void *dev_id;
-};
-
-struct pci_localirqlist pci_irqlist[COMEM_MAXPCI];
-
-/*****************************************************************************/
-
-int pci_request_irq(unsigned int irq,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long flags, const char *device, void *dev_id)
-{
- int i;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_request_irq(irq=%d,handler=%x,flags=%x,device=%s,"
- "dev_id=%x)\n", irq, (int) handler, (int) flags, device,
- (int) dev_id);
-#endif
-
- /* Check if this interrupt handler is already lodged */
- for (i = 0; (i < COMEM_MAXPCI); i++) {
- if (pci_irqlist[i].handler == handler)
- return(0);
- }
-
- /* Find a free spot to put this handler */
- for (i = 0; (i < COMEM_MAXPCI); i++) {
- if (pci_irqlist[i].handler == 0) {
- pci_irqlist[i].handler = handler;
- pci_irqlist[i].device = device;
- pci_irqlist[i].dev_id = dev_id;
- return(0);
- }
- }
-
- /* Couldn't fit?? */
- return(1);
-}
-
-/*****************************************************************************/
-
-void pci_free_irq(unsigned int irq, void *dev_id)
-{
- int i;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_free_irq(irq=%d,dev_id=%x)\n", irq, (int) dev_id);
-#endif
-
- if (dev_id == (void *) NULL)
- return;
-
- /* Check if this interrupt handler is lodged */
- for (i = 0; (i < COMEM_MAXPCI); i++) {
- if (pci_irqlist[i].dev_id == dev_id) {
- pci_irqlist[i].handler = NULL;
- pci_irqlist[i].device = NULL;
- pci_irqlist[i].dev_id = NULL;
- break;
- }
- }
-}
-
-/*****************************************************************************/
-
-void pci_interrupt(int irq, void *id, struct pt_regs *fp)
-{
- int i;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_interrupt(irq=%d,id=%x,fp=%x)\n", irq, (int) id, (int) fp);
-#endif
-
- for (i = 0; (i < COMEM_MAXPCI); i++) {
- if (pci_irqlist[i].handler)
- (*pci_irqlist[i].handler)(irq,pci_irqlist[i].dev_id,fp);
- }
-}
-
-/*****************************************************************************/
-
-/*
- * The shared memory region is broken up into contiguous 512 byte
- * regions for easy allocation... This is not an optimal solution
- * but it makes allocation and freeing regions really easy.
- */
-
-#define PCI_MEMSLOTSIZE 512
-#define PCI_MEMSLOTS (COMEM_SHMEMSIZE / PCI_MEMSLOTSIZE)
-
-char pci_shmemmap[PCI_MEMSLOTS];
-
-
-void *pci_bmalloc(int size)
-{
- int i, j, nrslots;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_bmalloc(size=%d)\n", size);
-#endif
-
- if (size <= 0)
- return((void *) NULL);
-
- nrslots = (size - 1) / PCI_MEMSLOTSIZE;
-
- for (i = 0; (i < (PCI_MEMSLOTS-nrslots)); i++) {
- if (pci_shmemmap[i] == 0) {
- for (j = i+1; (j < (i+nrslots)); j++) {
- if (pci_shmemmap[j])
- goto restart;
- }
-
- for (j = i; (j <= i+nrslots); j++)
- pci_shmemmap[j] = 1;
- break;
- }
-restart:
- }
-
- return((void *) (COMEM_BASE + COMEM_SHMEM + (i * PCI_MEMSLOTSIZE)));
-}
-
-/*****************************************************************************/
-
-void pci_bmfree(void *mp, int size)
-{
- int i, j, nrslots;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_bmfree(mp=%x,size=%d)\n", (int) mp, size);
-#endif
-
- nrslots = size / PCI_MEMSLOTSIZE;
- i = (((unsigned long) mp) - (COMEM_BASE + COMEM_SHMEM)) /
- PCI_MEMSLOTSIZE;
-
- for (j = i; (j < (i+nrslots)); j++)
- pci_shmemmap[j] = 0;
-}
-
-/*****************************************************************************/
-
-unsigned long pci_virt_to_bus(volatile void *address)
-{
- unsigned long l;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_virt_to_bus(address=%x)", (int) address);
-#endif
-
- l = ((unsigned long) address) - COMEM_BASE;
-#ifdef DEBUGIO
- printk(KERN_DEBUG "=%x\n", (int) (l+pci_shmemaddr));
-#endif
- return(l + pci_shmemaddr);
-}
-
-/*****************************************************************************/
-
-void *pci_bus_to_virt(unsigned long address)
-{
- unsigned long l;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_bus_to_virt(address=%x)", (int) address);
-#endif
-
- l = address - pci_shmemaddr;
-#ifdef DEBUGIO
- printk(KERN_DEBUG "=%x\n", (int) (address + COMEM_BASE));
-#endif
- return((void *) (address + COMEM_BASE));
-}
-
-/*****************************************************************************/
-
-void pci_bmcpyto(void *dst, void *src, int len)
-{
- unsigned long *dp, *sp, val;
- unsigned char *dcp, *scp;
- int i, j;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_bmcpyto(dst=%x,src=%x,len=%d)\n", (int)dst, (int)src, len);
-#endif
-
- dp = (unsigned long *) dst;
- sp = (unsigned long *) src;
- i = len >> 2;
-
-#if 0
- printk(KERN_INFO "DATA:");
- scp = (unsigned char *) sp;
- for (i = 0; (i < len); i++) {
- if ((i % 16) == 0) printk(KERN_INFO "\n%04x: ", i);
- printk(KERN_INFO "%02x ", *scp++);
- }
- printk(KERN_INFO "\n");
-#endif
-
- for (j = 0; (i >= 0); i--, j++) {
- val = *sp++;
- val = (val << 24) | ((val & 0x0000ff00) << 8) |
- ((val & 0x00ff0000) >> 8) | (val >> 24);
- *dp++ = val;
- }
-
- if (len & 0x3) {
- dcp = (unsigned char *) dp;
- scp = ((unsigned char *) sp) + 3;
- for (i = 0; (i < (len & 0x3)); i++)
- *dcp++ = *scp--;
- }
-}
-
-/*****************************************************************************/
-
-void pci_bmcpyfrom(void *dst, void *src, int len)
-{
- unsigned long *dp, *sp, val;
- unsigned char *dcp, *scp;
- int i;
-
-#ifdef DEBUGIO
- printk(KERN_DEBUG "pci_bmcpyfrom(dst=%x,src=%x,len=%d)\n",(int)dst,(int)src,len);
-#endif
-
- dp = (unsigned long *) dst;
- sp = (unsigned long *) src;
- i = len >> 2;
-
- for (; (i >= 0); i--) {
- val = *sp++;
- val = (val << 24) | ((val & 0x0000ff00) << 8) |
- ((val & 0x00ff0000) >> 8) | (val >> 24);
- *dp++ = val;
- }
-
- if (len & 0x3) {
- dcp = ((unsigned char *) dp) + 3;
- scp = (unsigned char *) sp;
- for (i = 0; (i < (len & 0x3)); i++)
- *dcp++ = *scp--;
- }
-
-#if 0
- printk(KERN_INFO "DATA:");
- dcp = (unsigned char *) dst;
- for (i = 0; (i < len); i++) {
- if ((i % 16) == 0) printk(KERN_INFO "\n%04x: ", i);
- printk(KERN_INFO "%02x ", *dcp++);
- }
- printk(KERN_INFO "\n");
-#endif
-}
-
-/*****************************************************************************/
-
-void *pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma_addr)
-{
- void *mp;
- if ((mp = pci_bmalloc(size)) != NULL) {
- dma_addr = mp - (COMEM_BASE + COMEM_SHMEM);
- return(mp);
- }
- *dma_addr = (dma_addr_t) NULL;
- return(NULL);
-}
-
-/*****************************************************************************/
-
-void pci_free_consistent(struct pci_dev *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr)
-{
- pci_bmfree(cpu_addr, size);
-}
-
-/*****************************************************************************/
Hi Adrian,
Adrian Bunk wrote:
> On Mon, Aug 25, 2008 at 04:16:12PM +1000, Greg Ungerer wrote:
>> Hi Adrian,
>>
>> Adrian Bunk wrote:
>>> There exists blackfin hardware with PCI support, but the support
>>> currently in the kernel fails to build starting with:
>>>
>>> <-- snip -->
>>>
>>> ...
>>> CC init/main.o
>>> In file included from dma-mapping.h:5,
>>> from dma-mapping.h:52,
>>> from dmaengine.h:29,
>>> from skbuff.h:29,
>>> from netlink.h:155,
>>> from genetlink.h:4,
>>> from genetlink.h:4,
>>> from taskstats_kern.h:12,
>>> from main.c:46:
>>> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24: error:
>>> implicit declaration of function 'pci_dma_supported'
>>> ...
>>> make[2]: *** [init/main.o] Error 1
>> I think we should just remove the underlying comempci access
>> code which is the only user of this (arch/m68knommu/kernel/comempci.c).
>> Nobody has used it in a very long time. And the hardware itself is
>> old, and completely brain-damaged by design.
>
> A patch for removing the comempci code is below.
>
> It's a bit suspicious that asm/elia.h is now removed since comempci.c
> was the only user. What's the sttus of the eLIA platform?
Only ever a handful where made, and that was in 1999.
I doubt anyone could ever use the PCI interface on it
in any useful way.
> But COMEMPCI fails with a different error - this init/main.o build error
> is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency of PCI
> on BROKEN is still required (unless it gets fixed).
Unless I am mistaken there is now no need for the CONFIG_PCI option
if selecting m68knommu. The only m68knommu platforms that had PCI
as far as I know where those that use the comempci part.
The patch looks ok to me too (acked below).
Regards
Greg
> cu
> Adrian
>
>
> <-- snip -->
>
>
> The COMEMPCI code didn't even compile.
>
> Greg Ungerer said:
> I think we should just remove the underlying comempci access
> code which is the only user of this (arch/m68knommu/kernel/comempci.c).
> Nobody has used it in a very long time. And the hardware itself is
> old, and completely brain-damaged by design.
>
> Signed-off-by: Adrian Bunk <[email protected]>
Acked-by: Greg Ungerer <[email protected]>
> ---
>
> arch/m68knommu/Kconfig | 4
> arch/m68knommu/include/asm/anchor.h | 112 ---
> arch/m68knommu/include/asm/elia.h | 41 -
> arch/m68knommu/include/asm/mcfpci.h | 119 ---
> arch/m68knommu/include/asm/pci.h | 23
> arch/m68knommu/kernel/Makefile | 1
> arch/m68knommu/kernel/comempci.c | 980 ----------------------------
> 7 files changed, 1280 deletions(-)
>
> 6c2fed7cd1aad31f7c1518cfcb0d7d8f438ba8a4
> diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
> index 77a5bdf..15ffd55 100644
> --- a/arch/m68knommu/Kconfig
> +++ b/arch/m68knommu/Kconfig
> @@ -706,10 +706,6 @@ config PCI
> help
> Support for PCI bus.
>
> -config COMEMPCI
> - bool "CO-MEM lite PCI controller support"
> - depends on (M5307 || M5407)
> -
> source "drivers/pci/Kconfig"
>
> source "drivers/pcmcia/Kconfig"
> diff --git a/arch/m68knommu/include/asm/anchor.h b/arch/m68knommu/include/asm/anchor.h
> deleted file mode 100644
> index 871c0d5..0000000
> --- a/arch/m68knommu/include/asm/anchor.h
> +++ /dev/null
> @@ -1,112 +0,0 @@
> -/****************************************************************************/
> -
> -/*
> - * anchor.h -- Anchor CO-MEM Lite PCI host bridge part.
> - *
> - * (C) Copyright 2000, Moreton Bay (http://www.moreton.com.au)
> - */
> -
> -/****************************************************************************/
> -#ifndef anchor_h
> -#define anchor_h
> -/****************************************************************************/
> -
> -/*
> - * Define basic addressing info.
> - */
> -#if defined(CONFIG_M5407C3)
> -#define COMEM_BASE 0xFFFF0000 /* Base of CO-MEM address space */
> -#define COMEM_IRQ 25 /* IRQ of anchor part */
> -#else
> -#define COMEM_BASE 0x80000000 /* Base of CO-MEM address space */
> -#define COMEM_IRQ 25 /* IRQ of anchor part */
> -#endif
> -
> -/****************************************************************************/
> -
> -/*
> - * 4-byte registers of CO-MEM, so adjust register addresses for
> - * easy access. Handy macro for word access too.
> - */
> -#define LREG(a) ((a) >> 2)
> -#define WREG(a) ((a) >> 1)
> -
> -
> -/*
> - * Define base addresses within CO-MEM Lite register address space.
> - */
> -#define COMEM_I2O 0x0000 /* I2O registers */
> -#define COMEM_OPREGS 0x0400 /* Operation registers */
> -#define COMEM_PCIBUS 0x2000 /* Direct access to PCI bus */
> -#define COMEM_SHMEM 0x4000 /* Shared memory region */
> -
> -#define COMEM_SHMEMSIZE 0x4000 /* Size of shared memory */
> -
> -
> -/*
> - * Define CO-MEM Registers.
> - */
> -#define COMEM_I2OHISR 0x0030 /* I2O host interrupt status */
> -#define COMEM_I2OHIMR 0x0034 /* I2O host interrupt mask */
> -#define COMEM_I2OLISR 0x0038 /* I2O local interrupt status */
> -#define COMEM_I2OLIMR 0x003c /* I2O local interrupt mask */
> -#define COMEM_IBFPFIFO 0x0040 /* I2O inbound free/post FIFO */
> -#define COMEM_OBPFFIFO 0x0044 /* I2O outbound post/free FIFO */
> -#define COMEM_IBPFFIFO 0x0048 /* I2O inbound post/free FIFO */
> -#define COMEM_OBFPFIFO 0x004c /* I2O outbound free/post FIFO */
> -
> -#define COMEM_DAHBASE 0x0460 /* Direct access base address */
> -
> -#define COMEM_NVCMD 0x04a0 /* I2C serial command */
> -#define COMEM_NVREAD 0x04a4 /* I2C serial read */
> -#define COMEM_NVSTAT 0x04a8 /* I2C status */
> -
> -#define COMEM_DMALBASE 0x04b0 /* DMA local base address */
> -#define COMEM_DMAHBASE 0x04b4 /* DMA host base address */
> -#define COMEM_DMASIZE 0x04b8 /* DMA size */
> -#define COMEM_DMACTL 0x04bc /* DMA control */
> -
> -#define COMEM_HCTL 0x04e0 /* Host control */
> -#define COMEM_HINT 0x04e4 /* Host interrupt control/status */
> -#define COMEM_HLDATA 0x04e8 /* Host to local data mailbox */
> -#define COMEM_LINT 0x04f4 /* Local interrupt contole status */
> -#define COMEM_LHDATA 0x04f8 /* Local to host data mailbox */
> -
> -#define COMEM_LBUSCFG 0x04fc /* Local bus configuration */
> -
> -
> -/*
> - * Commands and flags for use with Direct Access Register.
> - */
> -#define COMEM_DA_IACK 0x00000000 /* Interrupt acknowledge (read) */
> -#define COMEM_DA_SPCL 0x00000010 /* Special cycle (write) */
> -#define COMEM_DA_MEMRD 0x00000004 /* Memory read cycle */
> -#define COMEM_DA_MEMWR 0x00000004 /* Memory write cycle */
> -#define COMEM_DA_IORD 0x00000002 /* I/O read cycle */
> -#define COMEM_DA_IOWR 0x00000002 /* I/O write cycle */
> -#define COMEM_DA_CFGRD 0x00000006 /* Configuration read cycle */
> -#define COMEM_DA_CFGWR 0x00000006 /* Configuration write cycle */
> -
> -#define COMEM_DA_ADDR(a) ((a) & 0xffffe000)
> -
> -#define COMEM_DA_OFFSET(a) ((a) & 0x00001fff)
> -
> -
> -/*
> - * The PCI bus will be limited in what slots will actually be used.
> - * Define valid device numbers for different boards.
> - */
> -#if defined(CONFIG_M5407C3)
> -#define COMEM_MINDEV 14 /* Minimum valid DEVICE */
> -#define COMEM_MAXDEV 14 /* Maximum valid DEVICE */
> -#define COMEM_BRIDGEDEV 15 /* Slot bridge is in */
> -#else
> -#define COMEM_MINDEV 0 /* Minimum valid DEVICE */
> -#define COMEM_MAXDEV 3 /* Maximum valid DEVICE */
> -#endif
> -
> -#define COMEM_MAXPCI (COMEM_MAXDEV+1) /* Maximum PCI devices */
> -
> -
> -/****************************************************************************/
> -#endif /* anchor_h */
> diff --git a/arch/m68knommu/include/asm/elia.h b/arch/m68knommu/include/asm/elia.h
> deleted file mode 100644
> index e037d4e..0000000
> --- a/arch/m68knommu/include/asm/elia.h
> +++ /dev/null
> @@ -1,41 +0,0 @@
> -/****************************************************************************/
> -
> -/*
> - * elia.h -- Lineo (formerly Moreton Bay) eLIA platform support.
> - *
> - * (C) Copyright 1999-2000, Moreton Bay (http://www.moreton.com.au)
> - * (C) Copyright 1999-2000, Lineo (http://www.lineo.com)
> - */
> -
> -/****************************************************************************/
> -#ifndef elia_h
> -#define elia_h
> -/****************************************************************************/
> -
> -#include <asm/coldfire.h>
> -
> -#ifdef CONFIG_eLIA
> -
> -/*
> - * The serial port DTR and DCD lines are also on the Parallel I/O
> - * as well, so define those too.
> - */
> -
> -#define eLIA_DCD1 0x0001
> -#define eLIA_DCD0 0x0002
> -#define eLIA_DTR1 0x0004
> -#define eLIA_DTR0 0x0008
> -
> -#define eLIA_PCIRESET 0x0020
> -
> -/*
> - * Kernel macros to set and unset the LEDs.
> - */
> -#ifndef __ASSEMBLY__
> -extern unsigned short ppdata;
> -#endif /* __ASSEMBLY__ */
> -
> -#endif /* CONFIG_eLIA */
> -
> -/****************************************************************************/
> -#endif /* elia_h */
> diff --git a/arch/m68knommu/include/asm/mcfpci.h b/arch/m68knommu/include/asm/mcfpci.h
> deleted file mode 100644
> index f1507dd..0000000
> --- a/arch/m68knommu/include/asm/mcfpci.h
> +++ /dev/null
> @@ -1,119 +0,0 @@
> -/****************************************************************************/
> -
> -/*
> - * mcfpci.h -- PCI bridge on ColdFire eval boards.
> - *
> - * (C) Copyright 2000, Greg Ungerer ([email protected])
> - * (C) Copyright 2000, Lineo Inc. (http://www.lineo.com)
> - */
> -
> -/****************************************************************************/
> -#ifndef mcfpci_h
> -#define mcfpci_h
> -/****************************************************************************/
> -
> -
> -#ifdef CONFIG_PCI
> -
> -/*
> - * Address regions in the PCI address space are not mapped into the
> - * normal memory space of the ColdFire. They must be accessed via
> - * handler routines. This is easy for I/O space (inb/outb/etc) but
> - * needs some code changes to support ordinary memory. Interrupts
> - * also need to be vectored through the PCI handler first, then it
> - * will call the actual driver sub-handlers.
> - */
> -
> -/*
> - * Un-define all the standard I/O access routines.
> - */
> -#undef inb
> -#undef inw
> -#undef inl
> -#undef inb_p
> -#undef inw_p
> -#undef insb
> -#undef insw
> -#undef insl
> -#undef outb
> -#undef outw
> -#undef outl
> -#undef outb_p
> -#undef outw_p
> -#undef outsb
> -#undef outsw
> -#undef outsl
> -
> -#undef request_irq
> -#undef free_irq
> -
> -#undef bus_to_virt
> -#undef virt_to_bus
> -
> -
> -/*
> - * Re-direct all I/O memory accesses functions to PCI specific ones.
> - */
> -#define inb pci_inb
> -#define inw pci_inw
> -#define inl pci_inl
> -#define inb_p pci_inb
> -#define inw_p pci_inw
> -#define insb pci_insb
> -#define insw pci_insw
> -#define insl pci_insl
> -
> -#define outb pci_outb
> -#define outw pci_outw
> -#define outl pci_outl
> -#define outb_p pci_outb
> -#define outw_p pci_outw
> -#define outsb pci_outsb
> -#define outsw pci_outsw
> -#define outsl pci_outsl
> -
> -#define request_irq pci_request_irq
> -#define free_irq pci_free_irq
> -
> -#define virt_to_bus pci_virt_to_bus
> -#define bus_to_virt pci_bus_to_virt
> -
> -#define CONFIG_COMEMPCI 1
> -
> -
> -/*
> - * Prototypes of the real PCI functions (defined in bios32.c).
> - */
> -unsigned char pci_inb(unsigned int addr);
> -unsigned short pci_inw(unsigned int addr);
> -unsigned int pci_inl(unsigned int addr);
> -void pci_insb(void *addr, void *buf, int len);
> -void pci_insw(void *addr, void *buf, int len);
> -void pci_insl(void *addr, void *buf, int len);
> -
> -void pci_outb(unsigned char val, unsigned int addr);
> -void pci_outw(unsigned short val, unsigned int addr);
> -void pci_outl(unsigned int val, unsigned int addr);
> -void pci_outsb(void *addr, void *buf, int len);
> -void pci_outsw(void *addr, void *buf, int len);
> -void pci_outsl(void *addr, void *buf, int len);
> -
> -int pci_request_irq(unsigned int irq,
> - void (*handler)(int, void *, struct pt_regs *),
> - unsigned long flags,
> - const char *device,
> - void *dev_id);
> -void pci_free_irq(unsigned int irq, void *dev_id);
> -
> -void *pci_bmalloc(int size);
> -void pci_bmfree(void *bmp, int len);
> -void pci_copytoshmem(unsigned long bmp, void *src, int size);
> -void pci_copyfromshmem(void *dst, unsigned long bmp, int size);
> -unsigned long pci_virt_to_bus(volatile void *address);
> -void *pci_bus_to_virt(unsigned long address);
> -void pci_bmcpyto(void *dst, void *src, int len);
> -void pci_bmcpyfrom(void *dst, void *src, int len);
> -
> -#endif /* CONFIG_PCI */
> -/****************************************************************************/
> -#endif /* mcfpci_h */
> diff --git a/arch/m68knommu/include/asm/pci.h b/arch/m68knommu/include/asm/pci.h
> index a13f3cc..8031d1d 100644
> --- a/arch/m68knommu/include/asm/pci.h
> +++ b/arch/m68knommu/include/asm/pci.h
> @@ -3,27 +3,4 @@
>
> #include <asm-m68k/pci.h>
>
> -#ifdef CONFIG_COMEMPCI
> -/*
> - * These are pretty much arbitary with the CoMEM implementation.
> - * We have the whole address space to ourselves.
> - */
> -#define PCIBIOS_MIN_IO 0x100
> -#define PCIBIOS_MIN_MEM 0x00010000
> -
> -#define pcibios_scan_all_fns(a, b) 0
> -
> -/*
> - * Return whether the given PCI device DMA address mask can
> - * be supported properly. For example, if your device can
> - * only drive the low 24-bits during PCI bus mastering, then
> - * you would pass 0x00ffffff as the mask to this function.
> - */
> -static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
> -{
> - return 1;
> -}
> -
> -#endif /* CONFIG_COMEMPCI */
> -
> #endif /* M68KNOMMU_PCI_H */
> diff --git a/arch/m68knommu/kernel/Makefile b/arch/m68knommu/kernel/Makefile
> index f0eab3d..37c3fc0 100644
> --- a/arch/m68knommu/kernel/Makefile
> +++ b/arch/m68knommu/kernel/Makefile
> @@ -8,4 +8,3 @@ obj-y += dma.o entry.o init_task.o irq.o m68k_ksyms.o process.o ptrace.o \
> setup.o signal.o syscalltable.o sys_m68k.o time.o traps.o
>
> obj-$(CONFIG_MODULES) += module.o
> -obj-$(CONFIG_COMEMPCI) += comempci.o
> diff --git a/arch/m68knommu/kernel/comempci.c b/arch/m68knommu/kernel/comempci.c
> deleted file mode 100644
> index 0a68b5a..0000000
> --- a/arch/m68knommu/kernel/comempci.c
> +++ /dev/null
> @@ -1,980 +0,0 @@
> -/*****************************************************************************/
> -
> -/*
> - * comemlite.c -- PCI access code for embedded CO-MEM Lite PCI controller.
> - *
> - * (C) Copyright 1999-2003, Greg Ungerer ([email protected]).
> - * (C) Copyright 2000, Lineo (http://www.lineo.com)
> - */
> -
> -/*****************************************************************************/
> -
> -#include <linux/kernel.h>
> -#include <linux/types.h>
> -#include <linux/pci.h>
> -#include <linux/ptrace.h>
> -#include <linux/spinlock.h>
> -#include <linux/interrupt.h>
> -#include <linux/sched.h>
> -#include <asm/coldfire.h>
> -#include <asm/mcfsim.h>
> -#include <asm/irq.h>
> -#include <asm/anchor.h>
> -
> -#ifdef CONFIG_eLIA
> -#include <asm/elia.h>
> -#endif
> -
> -/*****************************************************************************/
> -
> -/*
> - * Debug configuration defines. DEBUGRES sets debugging output for
> - * the resource allocation phase. DEBUGPCI traces on pcibios_ function
> - * calls, and DEBUGIO traces all accesses to devices on the PCI bus.
> - */
> -/*#define DEBUGRES 1*/
> -/*#define DEBUGPCI 1*/
> -/*#define DEBUGIO 1*/
> -
> -/*****************************************************************************/
> -
> -/*
> - * PCI markers for bus present and active slots.
> - */
> -int pci_bus_is_present = 0;
> -unsigned long pci_slotmask = 0;
> -
> -/*
> - * We may or may not need to swap the bytes of PCI bus tranfers.
> - * The endianess is re-roder automatically by the CO-MEM, but it
> - * will get the wrong byte order for a pure data stream.
> - */
> -#define pci_byteswap 0
> -
> -
> -/*
> - * Resource tracking. The CO-MEM part creates a virtual address
> - * space that all the PCI devices live in - it is not in any way
> - * directly mapped into the ColdFire address space. So we can
> - * really assign any resources we like to devices, as long as
> - * they do not clash with other PCI devices.
> - */
> -unsigned int pci_iobase = PCIBIOS_MIN_IO; /* Arbitrary start address */
> -unsigned int pci_membase = PCIBIOS_MIN_MEM; /* Arbitrary start address */
> -
> -#define PCI_MINIO 0x100 /* 256 byte minimum I/O */
> -#define PCI_MINMEM 0x00010000 /* 64k minimum chunk */
> -
> -/*
> - * The CO-MEM's shared memory segment is visible inside the PCI
> - * memory address space. We need to keep track of the address that
> - * this is mapped at, to setup the bus masters pointers.
> - */
> -unsigned int pci_shmemaddr;
> -
> -/*****************************************************************************/
> -
> -void pci_interrupt(int irq, void *id, struct pt_regs *fp);
> -
> -/*****************************************************************************/
> -
> -/*
> - * Some platforms have custom ways of reseting the PCI bus.
> - */
> -
> -void pci_resetbus(void)
> -{
> -#ifdef CONFIG_eLIA
> - int i;
> -
> -#ifdef DEBUGPCI
> - printk(KERN_DEBUG "pci_resetbus()\n");
> -#endif
> -
> - *((volatile unsigned short *) (MCF_MBAR+MCFSIM_PADDR)) |= eLIA_PCIRESET;
> - for (i = 0; (i < 1000); i++) {
> - *((volatile unsigned short *) (MCF_MBAR + MCFSIM_PADAT)) =
> - (ppdata | eLIA_PCIRESET);
> - }
> -
> -
> - *((volatile unsigned short *) (MCF_MBAR + MCFSIM_PADAT)) = ppdata;
> -#endif
> -}
> -
> -/*****************************************************************************/
> -
> -int pcibios_assign_resource_slot(int slot)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned char *ip;
> - unsigned int idsel, addr, val, align, i;
> - int bar;
> -
> -#ifdef DEBUGPCI
> - printk(KERN_INFO "pcibios_assign_resource_slot(slot=%x)\n", slot);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - idsel = COMEM_DA_ADDR(0x1 << (slot + 16));
> -
> - /* Try to assign resource to each BAR */
> - for (bar = 0; (bar < 6); bar++) {
> - addr = COMEM_PCIBUS + PCI_BASE_ADDRESS_0 + (bar * 4);
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
> - val = rp[LREG(addr)];
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "-----------------------------------"
> - "-------------------------------------\n");
> - printk(KERN_DEBUG "BAR[%d]: read=%08x ", bar, val);
> -#endif
> -
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
> - rp[LREG(addr)] = 0xffffffff;
> -
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
> - val = rp[LREG(addr)];
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "write=%08x ", val);
> -#endif
> - if (val == 0) {
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "\n");
> -#endif
> - continue;
> - }
> -
> - /* Determine space required by BAR */
> - /* FIXME: this should go backwords from 0x80000000... */
> - for (i = 0; (i < 32); i++) {
> - if ((0x1 << i) & (val & 0xfffffffc))
> - break;
> - }
> -
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "size=%08x(%d)\n", (0x1 << i), i);
> -#endif
> - i = 0x1 << i;
> -
> - /* Assign a resource */
> - if (val & PCI_BASE_ADDRESS_SPACE_IO) {
> - if (i < PCI_MINIO)
> - i = PCI_MINIO;
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "BAR[%d]: IO size=%08x iobase=%08x\n",
> - bar, i, pci_iobase);
> -#endif
> - if (i > 0xffff) {
> - /* Invalid size?? */
> - val = 0 | PCI_BASE_ADDRESS_SPACE_IO;
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "BAR[%d]: too big for IO??\n", bar);
> -#endif
> - } else {
> - /* Check for un-alignment */
> - if ((align = pci_iobase % i))
> - pci_iobase += (i - align);
> - val = pci_iobase | PCI_BASE_ADDRESS_SPACE_IO;
> - pci_iobase += i;
> - }
> - } else {
> - if (i < PCI_MINMEM)
> - i = PCI_MINMEM;
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "BAR[%d]: MEMORY size=%08x membase=%08x\n",
> - bar, i, pci_membase);
> -#endif
> - /* Check for un-alignment */
> - if ((align = pci_membase % i))
> - pci_membase += (i - align);
> - val = pci_membase | PCI_BASE_ADDRESS_SPACE_MEMORY;
> - pci_membase += i;
> - }
> -
> - /* Write resource back into BAR register */
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
> - rp[LREG(addr)] = val;
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "BAR[%d]: assigned bar=%08x\n", bar, val);
> -#endif
> - }
> -
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "-----------------------------------"
> - "-------------------------------------\n");
> -#endif
> -
> - /* Assign IRQ if one is wanted... */
> - ip = (volatile unsigned char *) (COMEM_BASE + COMEM_PCIBUS);
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
> -
> - addr = (PCI_INTERRUPT_PIN & 0xfc) + (~PCI_INTERRUPT_PIN & 0x03);
> - if (ip[addr]) {
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
> - addr = (PCI_INTERRUPT_LINE & 0xfc)+(~PCI_INTERRUPT_LINE & 0x03);
> - ip[addr] = 25;
> -#ifdef DEBUGRES
> - printk(KERN_DEBUG "IRQ LINE=25\n");
> -#endif
> - }
> -
> - return(0);
> -}
> -
> -/*****************************************************************************/
> -
> -int pcibios_enable_slot(int slot)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned short *wp;
> - unsigned int idsel, addr;
> - unsigned short cmd;
> -
> -#ifdef DEBUGPCI
> - printk(KERN_DEBUG "pcibios_enbale_slot(slot=%x)\n", slot);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - wp = (volatile unsigned short *) COMEM_BASE;
> - idsel = COMEM_DA_ADDR(0x1 << (slot + 16));
> -
> - /* Get current command settings */
> - addr = COMEM_PCIBUS + PCI_COMMAND;
> - addr = (addr & ~0x3) + (~addr & 0x02);
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGRD | idsel;
> - cmd = wp[WREG(addr)];
> - /*val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);*/
> -
> - /* Enable I/O and memory accesses to this device */
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_CFGWR | idsel;
> - cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
> - wp[WREG(addr)] = cmd;
> -
> - return(0);
> -}
> -
> -/*****************************************************************************/
> -
> -void pcibios_assign_resources(void)
> -{
> - volatile unsigned long *rp;
> - unsigned long sel, id;
> - int slot;
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> -
> - /*
> - * Do a quick scan of the PCI bus and see what is here.
> - */
> - for (slot = COMEM_MINDEV; (slot <= COMEM_MAXDEV); slot++) {
> - sel = COMEM_DA_CFGRD | COMEM_DA_ADDR(0x1 << (slot + 16));
> - rp[LREG(COMEM_DAHBASE)] = sel;
> - rp[LREG(COMEM_PCIBUS)] = 0; /* Clear bus */
> - id = rp[LREG(COMEM_PCIBUS)];
> - if ((id != 0) && ((id & 0xffff0000) != (sel & 0xffff0000))) {
> - printk(KERN_INFO "PCI: slot=%d id=%08x\n", slot, (int) id);
> - pci_slotmask |= 0x1 << slot;
> - pcibios_assign_resource_slot(slot);
> - pcibios_enable_slot(slot);
> - }
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -int pcibios_init(void)
> -{
> - volatile unsigned long *rp;
> - unsigned long sel, id;
> - int slot;
> -
> -#ifdef DEBUGPCI
> - printk(KERN_DEBUG "pcibios_init()\n");
> -#endif
> -
> - pci_resetbus();
> -
> - /*
> - * Do some sort of basic check to see if the CO-MEM part
> - * is present... This works ok, but I think we really need
> - * something better...
> - */
> - rp = (volatile unsigned long *) COMEM_BASE;
> - if ((rp[LREG(COMEM_LBUSCFG)] & 0xff) != 0x50) {
> - printk(KERN_INFO "PCI: no PCI bus present\n");
> - return(0);
> - }
> -
> -#ifdef COMEM_BRIDGEDEV
> - /*
> - * Setup the PCI bridge device first. It needs resources too,
> - * so that bus masters can get to its shared memory.
> - */
> - slot = COMEM_BRIDGEDEV;
> - sel = COMEM_DA_CFGRD | COMEM_DA_ADDR(0x1 << (slot + 16));
> - rp[LREG(COMEM_DAHBASE)] = sel;
> - rp[LREG(COMEM_PCIBUS)] = 0; /* Clear bus */
> - id = rp[LREG(COMEM_PCIBUS)];
> - if ((id == 0) || ((id & 0xffff0000) == (sel & 0xffff0000))) {
> - printk(KERN_INFO "PCI: no PCI bus bridge present\n");
> - return(0);
> - }
> -
> - printk(KERN_INFO "PCI: bridge device at slot=%d id=%08x\n", slot, (int) id);
> - pci_slotmask |= 0x1 << slot;
> - pci_shmemaddr = pci_membase;
> - pcibios_assign_resource_slot(slot);
> - pcibios_enable_slot(slot);
> -#endif
> -
> - pci_bus_is_present = 1;
> -
> - /* Get PCI irq for local vectoring */
> - if (request_irq(COMEM_IRQ, pci_interrupt, 0, "PCI bridge", NULL)) {
> - printk(KERN_WARNING "PCI: failed to acquire interrupt %d\n", COMEM_IRQ);
> - } else {
> - mcf_autovector(COMEM_IRQ);
> - }
> -
> - pcibios_assign_resources();
> -
> - return(0);
> -}
> -
> -/*****************************************************************************/
> -
> -char *pcibios_setup(char *option)
> -{
> - /* Nothing for us to handle. */
> - return(option);
> -}
> -/*****************************************************************************/
> -
> -void pcibios_fixup_bus(struct pci_bus *b)
> -{
> -}
> -
> -/*****************************************************************************/
> -
> -void pcibios_align_resource(void *data, struct resource *res,
> - resource_size_t size, resource_size_t align)
> -{
> -}
> -
> -/*****************************************************************************/
> -
> -int pcibios_enable_device(struct pci_dev *dev, int mask)
> -{
> - int slot;
> -
> - slot = PCI_SLOT(dev->devfn);
> - if ((dev->bus == 0) && (pci_slotmask & (1 << slot)))
> - pcibios_enable_slot(slot);
> - return(0);
> -}
> -
> -/*****************************************************************************/
> -
> -/*
> - * Local routines to interrcept the standard I/O and vector handling
> - * code. Don't include this 'till now - initialization code above needs
> - * access to the real code too.
> - */
> -#include <asm/mcfpci.h>
> -
> -/*****************************************************************************/
> -
> -void pci_outb(unsigned char val, unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned char *bp;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outb(val=%02x,addr=%x)\n", val, addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - bp = (volatile unsigned char *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
> - addr = (addr & ~0x3) + (~addr & 0x03);
> - bp[(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_outw(unsigned short val, unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned short *sp;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outw(val=%04x,addr=%x)\n", val, addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - sp = (volatile unsigned short *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
> - addr = (addr & ~0x3) + (~addr & 0x02);
> - if (pci_byteswap)
> - val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);
> - sp[WREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_outl(unsigned int val, unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned int *lp;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outl(val=%08x,addr=%x)\n", val, addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - lp = (volatile unsigned int *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(addr);
> -
> - if (pci_byteswap)
> - val = (val << 24) | ((val & 0x0000ff00) << 8) |
> - ((val & 0x00ff0000) >> 8) | (val >> 24);
> -
> - lp[LREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))] = val;
> -}
> -
> -/*****************************************************************************/
> -
> -unsigned long pci_blmask[] = {
> - 0x000000e0,
> - 0x000000d0,
> - 0x000000b0,
> - 0x00000070
> -};
> -
> -unsigned char pci_inb(unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned char *bp;
> - unsigned long r;
> - unsigned char val;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_inb(addr=%x)\n", addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - bp = (volatile unsigned char *) COMEM_BASE;
> -
> - r = COMEM_DA_IORD | COMEM_DA_ADDR(addr) | pci_blmask[(addr & 0x3)];
> - rp[LREG(COMEM_DAHBASE)] = r;
> -
> - addr = (addr & ~0x3) + (~addr & 0x3);
> - val = bp[(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
> - return(val);
> -}
> -
> -/*****************************************************************************/
> -
> -unsigned long pci_bwmask[] = {
> - 0x000000c0,
> - 0x000000c0,
> - 0x00000030,
> - 0x00000030
> -};
> -
> -unsigned short pci_inw(unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned short *sp;
> - unsigned long r;
> - unsigned short val;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_inw(addr=%x)", addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - r = COMEM_DA_IORD | COMEM_DA_ADDR(addr) | pci_bwmask[(addr & 0x3)];
> - rp[LREG(COMEM_DAHBASE)] = r;
> -
> - sp = (volatile unsigned short *) COMEM_BASE;
> - addr = (addr & ~0x3) + (~addr & 0x02);
> - val = sp[WREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
> - if (pci_byteswap)
> - val = ((val & 0xff) << 8) | ((val >> 8) & 0xff);
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "=%04x\n", val);
> -#endif
> - return(val);
> -}
> -
> -/*****************************************************************************/
> -
> -unsigned int pci_inl(unsigned int addr)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned int *lp;
> - unsigned int val;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_inl(addr=%x)", addr);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - lp = (volatile unsigned int *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(addr);
> - val = lp[LREG(COMEM_PCIBUS + COMEM_DA_OFFSET(addr))];
> -
> - if (pci_byteswap)
> - val = (val << 24) | ((val & 0x0000ff00) << 8) |
> - ((val & 0x00ff0000) >> 8) | (val >> 24);
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "=%08x\n", val);
> -#endif
> - return(val);
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_outsb(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned char *bp;
> - unsigned char *dp = (unsigned char *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outsb(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
> -
> - a = (a & ~0x3) + (~a & 0x03);
> - bp = (volatile unsigned char *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--)
> - *bp = *dp++;
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_outsw(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned short *wp;
> - unsigned short w, *dp = (unsigned short *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outsw(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
> -
> - a = (a & ~0x3) + (~a & 0x2);
> - wp = (volatile unsigned short *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--) {
> - w = *dp++;
> - if (pci_byteswap)
> - w = ((w & 0xff) << 8) | ((w >> 8) & 0xff);
> - *wp = w;
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_outsl(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned long *lp;
> - unsigned long l, *dp = (unsigned long *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_outsl(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IOWR | COMEM_DA_ADDR(a);
> -
> - lp = (volatile unsigned long *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--) {
> - l = *dp++;
> - if (pci_byteswap)
> - l = (l << 24) | ((l & 0x0000ff00) << 8) |
> - ((l & 0x00ff0000) >> 8) | (l >> 24);
> - *lp = l;
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_insb(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned char *bp;
> - unsigned char *dp = (unsigned char *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_insb(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
> -
> - a = (a & ~0x3) + (~a & 0x03);
> - bp = (volatile unsigned char *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--)
> - *dp++ = *bp;
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_insw(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned short *wp;
> - unsigned short w, *dp = (unsigned short *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_insw(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
> -
> - a = (a & ~0x3) + (~a & 0x2);
> - wp = (volatile unsigned short *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--) {
> - w = *wp;
> - if (pci_byteswap)
> - w = ((w & 0xff) << 8) | ((w >> 8) & 0xff);
> - *dp++ = w;
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_insl(void *addr, void *buf, int len)
> -{
> - volatile unsigned long *rp;
> - volatile unsigned long *lp;
> - unsigned long l, *dp = (unsigned long *) buf;
> - unsigned int a = (unsigned int) addr;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_insl(addr=%x,buf=%x,len=%d)\n", (int)addr, (int)buf, len);
> -#endif
> -
> - rp = (volatile unsigned long *) COMEM_BASE;
> - rp[LREG(COMEM_DAHBASE)] = COMEM_DA_IORD | COMEM_DA_ADDR(a);
> -
> - lp = (volatile unsigned long *)
> - (COMEM_BASE + COMEM_PCIBUS + COMEM_DA_OFFSET(a));
> -
> - while (len--) {
> - l = *lp;
> - if (pci_byteswap)
> - l = (l << 24) | ((l & 0x0000ff00) << 8) |
> - ((l & 0x00ff0000) >> 8) | (l >> 24);
> - *dp++ = l;
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -struct pci_localirqlist {
> - void (*handler)(int, void *, struct pt_regs *);
> - const char *device;
> - void *dev_id;
> -};
> -
> -struct pci_localirqlist pci_irqlist[COMEM_MAXPCI];
> -
> -/*****************************************************************************/
> -
> -int pci_request_irq(unsigned int irq,
> - void (*handler)(int, void *, struct pt_regs *),
> - unsigned long flags, const char *device, void *dev_id)
> -{
> - int i;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_request_irq(irq=%d,handler=%x,flags=%x,device=%s,"
> - "dev_id=%x)\n", irq, (int) handler, (int) flags, device,
> - (int) dev_id);
> -#endif
> -
> - /* Check if this interrupt handler is already lodged */
> - for (i = 0; (i < COMEM_MAXPCI); i++) {
> - if (pci_irqlist[i].handler == handler)
> - return(0);
> - }
> -
> - /* Find a free spot to put this handler */
> - for (i = 0; (i < COMEM_MAXPCI); i++) {
> - if (pci_irqlist[i].handler == 0) {
> - pci_irqlist[i].handler = handler;
> - pci_irqlist[i].device = device;
> - pci_irqlist[i].dev_id = dev_id;
> - return(0);
> - }
> - }
> -
> - /* Couldn't fit?? */
> - return(1);
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_free_irq(unsigned int irq, void *dev_id)
> -{
> - int i;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_free_irq(irq=%d,dev_id=%x)\n", irq, (int) dev_id);
> -#endif
> -
> - if (dev_id == (void *) NULL)
> - return;
> -
> - /* Check if this interrupt handler is lodged */
> - for (i = 0; (i < COMEM_MAXPCI); i++) {
> - if (pci_irqlist[i].dev_id == dev_id) {
> - pci_irqlist[i].handler = NULL;
> - pci_irqlist[i].device = NULL;
> - pci_irqlist[i].dev_id = NULL;
> - break;
> - }
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_interrupt(int irq, void *id, struct pt_regs *fp)
> -{
> - int i;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_interrupt(irq=%d,id=%x,fp=%x)\n", irq, (int) id, (int) fp);
> -#endif
> -
> - for (i = 0; (i < COMEM_MAXPCI); i++) {
> - if (pci_irqlist[i].handler)
> - (*pci_irqlist[i].handler)(irq,pci_irqlist[i].dev_id,fp);
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -/*
> - * The shared memory region is broken up into contiguous 512 byte
> - * regions for easy allocation... This is not an optimal solution
> - * but it makes allocation and freeing regions really easy.
> - */
> -
> -#define PCI_MEMSLOTSIZE 512
> -#define PCI_MEMSLOTS (COMEM_SHMEMSIZE / PCI_MEMSLOTSIZE)
> -
> -char pci_shmemmap[PCI_MEMSLOTS];
> -
> -
> -void *pci_bmalloc(int size)
> -{
> - int i, j, nrslots;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_bmalloc(size=%d)\n", size);
> -#endif
> -
> - if (size <= 0)
> - return((void *) NULL);
> -
> - nrslots = (size - 1) / PCI_MEMSLOTSIZE;
> -
> - for (i = 0; (i < (PCI_MEMSLOTS-nrslots)); i++) {
> - if (pci_shmemmap[i] == 0) {
> - for (j = i+1; (j < (i+nrslots)); j++) {
> - if (pci_shmemmap[j])
> - goto restart;
> - }
> -
> - for (j = i; (j <= i+nrslots); j++)
> - pci_shmemmap[j] = 1;
> - break;
> - }
> -restart:
> - }
> -
> - return((void *) (COMEM_BASE + COMEM_SHMEM + (i * PCI_MEMSLOTSIZE)));
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_bmfree(void *mp, int size)
> -{
> - int i, j, nrslots;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_bmfree(mp=%x,size=%d)\n", (int) mp, size);
> -#endif
> -
> - nrslots = size / PCI_MEMSLOTSIZE;
> - i = (((unsigned long) mp) - (COMEM_BASE + COMEM_SHMEM)) /
> - PCI_MEMSLOTSIZE;
> -
> - for (j = i; (j < (i+nrslots)); j++)
> - pci_shmemmap[j] = 0;
> -}
> -
> -/*****************************************************************************/
> -
> -unsigned long pci_virt_to_bus(volatile void *address)
> -{
> - unsigned long l;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_virt_to_bus(address=%x)", (int) address);
> -#endif
> -
> - l = ((unsigned long) address) - COMEM_BASE;
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "=%x\n", (int) (l+pci_shmemaddr));
> -#endif
> - return(l + pci_shmemaddr);
> -}
> -
> -/*****************************************************************************/
> -
> -void *pci_bus_to_virt(unsigned long address)
> -{
> - unsigned long l;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_bus_to_virt(address=%x)", (int) address);
> -#endif
> -
> - l = address - pci_shmemaddr;
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "=%x\n", (int) (address + COMEM_BASE));
> -#endif
> - return((void *) (address + COMEM_BASE));
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_bmcpyto(void *dst, void *src, int len)
> -{
> - unsigned long *dp, *sp, val;
> - unsigned char *dcp, *scp;
> - int i, j;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_bmcpyto(dst=%x,src=%x,len=%d)\n", (int)dst, (int)src, len);
> -#endif
> -
> - dp = (unsigned long *) dst;
> - sp = (unsigned long *) src;
> - i = len >> 2;
> -
> -#if 0
> - printk(KERN_INFO "DATA:");
> - scp = (unsigned char *) sp;
> - for (i = 0; (i < len); i++) {
> - if ((i % 16) == 0) printk(KERN_INFO "\n%04x: ", i);
> - printk(KERN_INFO "%02x ", *scp++);
> - }
> - printk(KERN_INFO "\n");
> -#endif
> -
> - for (j = 0; (i >= 0); i--, j++) {
> - val = *sp++;
> - val = (val << 24) | ((val & 0x0000ff00) << 8) |
> - ((val & 0x00ff0000) >> 8) | (val >> 24);
> - *dp++ = val;
> - }
> -
> - if (len & 0x3) {
> - dcp = (unsigned char *) dp;
> - scp = ((unsigned char *) sp) + 3;
> - for (i = 0; (i < (len & 0x3)); i++)
> - *dcp++ = *scp--;
> - }
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_bmcpyfrom(void *dst, void *src, int len)
> -{
> - unsigned long *dp, *sp, val;
> - unsigned char *dcp, *scp;
> - int i;
> -
> -#ifdef DEBUGIO
> - printk(KERN_DEBUG "pci_bmcpyfrom(dst=%x,src=%x,len=%d)\n",(int)dst,(int)src,len);
> -#endif
> -
> - dp = (unsigned long *) dst;
> - sp = (unsigned long *) src;
> - i = len >> 2;
> -
> - for (; (i >= 0); i--) {
> - val = *sp++;
> - val = (val << 24) | ((val & 0x0000ff00) << 8) |
> - ((val & 0x00ff0000) >> 8) | (val >> 24);
> - *dp++ = val;
> - }
> -
> - if (len & 0x3) {
> - dcp = ((unsigned char *) dp) + 3;
> - scp = (unsigned char *) sp;
> - for (i = 0; (i < (len & 0x3)); i++)
> - *dcp++ = *scp--;
> - }
> -
> -#if 0
> - printk(KERN_INFO "DATA:");
> - dcp = (unsigned char *) dst;
> - for (i = 0; (i < len); i++) {
> - if ((i % 16) == 0) printk(KERN_INFO "\n%04x: ", i);
> - printk(KERN_INFO "%02x ", *dcp++);
> - }
> - printk(KERN_INFO "\n");
> -#endif
> -}
> -
> -/*****************************************************************************/
> -
> -void *pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma_addr)
> -{
> - void *mp;
> - if ((mp = pci_bmalloc(size)) != NULL) {
> - dma_addr = mp - (COMEM_BASE + COMEM_SHMEM);
> - return(mp);
> - }
> - *dma_addr = (dma_addr_t) NULL;
> - return(NULL);
> -}
> -
> -/*****************************************************************************/
> -
> -void pci_free_consistent(struct pci_dev *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr)
> -{
> - pci_bmfree(cpu_addr, size);
> -}
> -
> -/*****************************************************************************/
>
>
--
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [email protected]
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
> Hi Adrian,
>
> Adrian Bunk wrote:
>> On Mon, Aug 25, 2008 at 04:16:12PM +1000, Greg Ungerer wrote:
>>> Hi Adrian,
>>>
>>> Adrian Bunk wrote:
>>>> There exists blackfin hardware with PCI support, but the support
>>>> currently in the kernel fails to build starting with:
>>>>
>>>> <-- snip -->
>>>>
>>>> ...
>>>> CC init/main.o
>>>> In file included from dma-mapping.h:5,
>>>> from dma-mapping.h:52,
>>>> from dmaengine.h:29,
>>>> from skbuff.h:29,
>>>> from netlink.h:155,
>>>> from genetlink.h:4,
>>>> from genetlink.h:4,
>>>> from taskstats_kern.h:12,
>>>> from main.c:46:
>>>> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24: error:
>>>> implicit declaration of function 'pci_dma_supported'
>>>> ...
>>>> make[2]: *** [init/main.o] Error 1
>>> I think we should just remove the underlying comempci access
>>> code which is the only user of this (arch/m68knommu/kernel/comempci.c).
>>> Nobody has used it in a very long time. And the hardware itself is
>>> old, and completely brain-damaged by design.
>>
>> A patch for removing the comempci code is below.
>>
>> It's a bit suspicious that asm/elia.h is now removed since comempci.c
>> was the only user. What's the sttus of the eLIA platform?
>
> Only ever a handful where made, and that was in 1999.
> I doubt anyone could ever use the PCI interface on it
> in any useful way.
So I can send a patch to remove the platform?
>> But COMEMPCI fails with a different error - this init/main.o build
>> error is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency
>> of PCI on BROKEN is still required (unless it gets fixed).
>
> Unless I am mistaken there is now no need for the CONFIG_PCI option
> if selecting m68knommu. The only m68knommu platforms that had PCI
> as far as I know where those that use the comempci part.
That implies I can also kill the m68k PCI code since m68knommu will
never use it?
> The patch looks ok to me too (acked below).
Thanks.
> Regards
> Greg
>...
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
On Fri, 29 Aug 2008, Adrian Bunk wrote:
> On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
> > Adrian Bunk wrote:
> >> A patch for removing the comempci code is below.
> >>
> >> It's a bit suspicious that asm/elia.h is now removed since comempci.c
> >> was the only user. What's the sttus of the eLIA platform?
> >
> > Only ever a handful where made, and that was in 1999.
> > I doubt anyone could ever use the PCI interface on it
> > in any useful way.
>
> So I can send a patch to remove the platform?
>
> >> But COMEMPCI fails with a different error - this init/main.o build
> >> error is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency
> >> of PCI on BROKEN is still required (unless it gets fixed).
> >
> > Unless I am mistaken there is now no need for the CONFIG_PCI option
> > if selecting m68knommu. The only m68knommu platforms that had PCI
> > as far as I know where those that use the comempci part.
>
> That implies I can also kill the m68k PCI code since m68knommu will
> never use it?
Sure. If the FreeScale guys ever forward-port their ColdFire/MMU code to
current mainline, we can readd it.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
Hi Adrian,
Adrian Bunk wrote:
> On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
>> Hi Adrian,
>>
>> Adrian Bunk wrote:
>>> On Mon, Aug 25, 2008 at 04:16:12PM +1000, Greg Ungerer wrote:
>>>> Hi Adrian,
>>>>
>>>> Adrian Bunk wrote:
>>>>> There exists blackfin hardware with PCI support, but the support
>>>>> currently in the kernel fails to build starting with:
>>>>>
>>>>> <-- snip -->
>>>>>
>>>>> ...
>>>>> CC init/main.o
>>>>> In file included from dma-mapping.h:5,
>>>>> from dma-mapping.h:52,
>>>>> from dmaengine.h:29,
>>>>> from skbuff.h:29,
>>>>> from netlink.h:155,
>>>>> from genetlink.h:4,
>>>>> from genetlink.h:4,
>>>>> from taskstats_kern.h:12,
>>>>> from main.c:46:
>>>>> dma-mapping.h: In function 'dma_supported': ma-mapping.h:24: error:
>>>>> implicit declaration of function 'pci_dma_supported'
>>>>> ...
>>>>> make[2]: *** [init/main.o] Error 1
>>>> I think we should just remove the underlying comempci access
>>>> code which is the only user of this (arch/m68knommu/kernel/comempci.c).
>>>> Nobody has used it in a very long time. And the hardware itself is
>>>> old, and completely brain-damaged by design.
>>> A patch for removing the comempci code is below.
>>>
>>> It's a bit suspicious that asm/elia.h is now removed since comempci.c
>>> was the only user. What's the sttus of the eLIA platform?
>> Only ever a handful where made, and that was in 1999.
>> I doubt anyone could ever use the PCI interface on it
>> in any useful way.
>
> So I can send a patch to remove the platform?
Yeah, I guess we can add in back in of anyone complains.
I don't know of any users of it anymore.
>>> But COMEMPCI fails with a different error - this init/main.o build
>>> error is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency
>>> of PCI on BROKEN is still required (unless it gets fixed).
>> Unless I am mistaken there is now no need for the CONFIG_PCI option
>> if selecting m68knommu. The only m68knommu platforms that had PCI
>> as far as I know where those that use the comempci part.
>
> That implies I can also kill the m68k PCI code since m68knommu will
> never use it?
Yep.
Regards
Greg
>> The patch looks ok to me too (acked below).
>
> Thanks.
>
>> Regards
>> Greg
>> ...
>
> cu
> Adrian
>
--
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [email protected]
SnapGear -- a Secure Computing Company PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
On Fri, Aug 29, 2008 at 09:31:43AM +0200, Geert Uytterhoeven wrote:
> On Fri, 29 Aug 2008, Adrian Bunk wrote:
> > On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
> > > Adrian Bunk wrote:
> > >> A patch for removing the comempci code is below.
> > >>
> > >> It's a bit suspicious that asm/elia.h is now removed since comempci.c
> > >> was the only user. What's the sttus of the eLIA platform?
> > >
> > > Only ever a handful where made, and that was in 1999.
> > > I doubt anyone could ever use the PCI interface on it
> > > in any useful way.
> >
> > So I can send a patch to remove the platform?
> >
> > >> But COMEMPCI fails with a different error - this init/main.o build
> > >> error is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency
> > >> of PCI on BROKEN is still required (unless it gets fixed).
> > >
> > > Unless I am mistaken there is now no need for the CONFIG_PCI option
> > > if selecting m68knommu. The only m68knommu platforms that had PCI
> > > as far as I know where those that use the comempci part.
> >
> > That implies I can also kill the m68k PCI code since m68knommu will
> > never use it?
>
> Sure. If the FreeScale guys ever forward-port their ColdFire/MMU code to
> current mainline, we can readd it.
Patch (on top of my Hades removal patch) is below.
> Gr{oetje,eeting}s,
>
> Geert
cu
Adrian
<-- snip -->
This patch removes the no longer used m68k PCI code.
Signed-off-by: Adrian Bunk <[email protected]>
---
arch/m68k/Kconfig | 4
arch/m68k/kernel/Makefile | 1
arch/m68k/kernel/bios32.c | 516 --------------------------------------
include/asm-m68k/dma.h | 4
include/asm-m68k/io.h | 66 ----
include/asm-m68k/pci.h | 51 ---
6 files changed, 7 insertions(+), 635 deletions(-)
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 7bacc1c..4b046fa 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -136,10 +136,6 @@ config ATARI
this kernel on an Atari, say Y here and browse the material
available in <file:Documentation/m68k>; otherwise say N.
-config PCI
- bool
- help
-
config MAC
bool "Macintosh support"
depends on !MMU_SUN3
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index 3a7f622..55d5d6b 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -14,5 +14,4 @@ obj-y := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \
devres-y = ../../../kernel/irq/devres.o
-obj-$(CONFIG_PCI) += bios32.o
obj-y$(CONFIG_MMU_SUN3) += dma.o # no, it's not a typo
diff --git a/arch/m68k/kernel/bios32.c b/arch/m68k/kernel/bios32.c
deleted file mode 100644
index 1c3b752..0000000
--- a/arch/m68k/kernel/bios32.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/*
- * bios32.c - PCI BIOS functions for m68k systems.
- *
- * Written by Wout Klaren.
- *
- * Based on the DEC Alpha bios32.c by Dave Rusling and David Mosberger.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-
-#if 0
-# define DBG_DEVS(args) printk args
-#else
-# define DBG_DEVS(args)
-#endif
-
-#ifdef CONFIG_PCI
-
-/*
- * PCI support for Linux/m68k. Currently only the Hades is supported.
- *
- * The support for PCI bridges in the DEC Alpha version has
- * been removed in this version.
- */
-
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-
-#include <asm/io.h>
-#include <asm/pci.h>
-#include <asm/uaccess.h>
-
-#define KB 1024
-#define MB (1024*KB)
-#define GB (1024*MB)
-
-#define MAJOR_REV 0
-#define MINOR_REV 5
-
-/*
- * Align VAL to ALIGN, which must be a power of two.
- */
-
-#define ALIGN(val,align) (((val) + ((align) - 1)) & ~((align) - 1))
-
-/*
- * Offsets relative to the I/O and memory base addresses from where resources
- * are allocated.
- */
-
-#define IO_ALLOC_OFFSET 0x00004000
-#define MEM_ALLOC_OFFSET 0x04000000
-
-/*
- * Declarations of hardware specific initialisation functions.
- */
-
-extern struct pci_bus_info *init_hades_pci(void);
-
-/*
- * Bus info structure of the PCI bus. A pointer to this structure is
- * put in the sysdata member of the pci_bus structure.
- */
-
-static struct pci_bus_info *bus_info;
-
-static int pci_modify = 1; /* If set, layout the PCI bus ourself. */
-static int skip_vga; /* If set do not modify base addresses
- of vga cards.*/
-static int disable_pci_burst; /* If set do not allow PCI bursts. */
-
-static unsigned int io_base;
-static unsigned int mem_base;
-
-/*
- * static void disable_dev(struct pci_dev *dev)
- *
- * Disable PCI device DEV so that it does not respond to I/O or memory
- * accesses.
- *
- * Parameters:
- *
- * dev - device to disable.
- */
-
-static void __init disable_dev(struct pci_dev *dev)
-{
- unsigned short cmd;
-
- if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
- (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
- (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga)
- return;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
- cmd &= (~PCI_COMMAND_IO & ~PCI_COMMAND_MEMORY & ~PCI_COMMAND_MASTER);
- pci_write_config_word(dev, PCI_COMMAND, cmd);
-}
-
-/*
- * static void layout_dev(struct pci_dev *dev)
- *
- * Layout memory and I/O for a device.
- *
- * Parameters:
- *
- * device - device to layout memory and I/O for.
- */
-
-static void __init layout_dev(struct pci_dev *dev)
-{
- unsigned short cmd;
- unsigned int base, mask, size, reg;
- unsigned int alignto;
- int i;
-
- /*
- * Skip video cards if requested.
- */
-
- if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
- (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
- (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga)
- return;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
- for (reg = PCI_BASE_ADDRESS_0, i = 0; reg <= PCI_BASE_ADDRESS_5; reg += 4, i++)
- {
- /*
- * Figure out how much space and of what type this
- * device wants.
- */
-
- pci_write_config_dword(dev, reg, 0xffffffff);
- pci_read_config_dword(dev, reg, &base);
-
- if (!base)
- {
- /* this base-address register is unused */
- dev->resource[i].start = 0;
- dev->resource[i].end = 0;
- dev->resource[i].flags = 0;
- continue;
- }
-
- /*
- * We've read the base address register back after
- * writing all ones and so now we must decode it.
- */
-
- if (base & PCI_BASE_ADDRESS_SPACE_IO)
- {
- /*
- * I/O space base address register.
- */
-
- cmd |= PCI_COMMAND_IO;
-
- base &= PCI_BASE_ADDRESS_IO_MASK;
- mask = (~base << 1) | 0x1;
- size = (mask & base) & 0xffffffff;
-
- /*
- * Align to multiple of size of minimum base.
- */
-
- alignto = max_t(unsigned int, 0x040, size);
- base = ALIGN(io_base, alignto);
- io_base = base + size;
- pci_write_config_dword(dev, reg, base | PCI_BASE_ADDRESS_SPACE_IO);
-
- dev->resource[i].start = base;
- dev->resource[i].end = dev->resource[i].start + size - 1;
- dev->resource[i].flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
-
- DBG_DEVS(("layout_dev: IO address: %lX\n", base));
- }
- else
- {
- unsigned int type;
-
- /*
- * Memory space base address register.
- */
-
- cmd |= PCI_COMMAND_MEMORY;
- type = base & PCI_BASE_ADDRESS_MEM_TYPE_MASK;
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- mask = (~base << 1) | 0x1;
- size = (mask & base) & 0xffffffff;
- switch (type)
- {
- case PCI_BASE_ADDRESS_MEM_TYPE_32:
- case PCI_BASE_ADDRESS_MEM_TYPE_64:
- break;
-
- case PCI_BASE_ADDRESS_MEM_TYPE_1M:
- printk("bios32 WARNING: slot %d, function %d "
- "requests memory below 1MB---don't "
- "know how to do that.\n",
- PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
- continue;
- }
-
- /*
- * Align to multiple of size of minimum base.
- */
-
- alignto = max_t(unsigned int, 0x1000, size);
- base = ALIGN(mem_base, alignto);
- mem_base = base + size;
- pci_write_config_dword(dev, reg, base);
-
- dev->resource[i].start = base;
- dev->resource[i].end = dev->resource[i].start + size - 1;
- dev->resource[i].flags = IORESOURCE_MEM;
-
- if (type == PCI_BASE_ADDRESS_MEM_TYPE_64)
- {
- /*
- * 64-bit address, set the highest 32 bits
- * to zero.
- */
-
- reg += 4;
- pci_write_config_dword(dev, reg, 0);
-
- i++;
- dev->resource[i].start = 0;
- dev->resource[i].end = 0;
- dev->resource[i].flags = 0;
- }
- }
- }
-
- /*
- * Enable device:
- */
-
- if (dev->class >> 8 == PCI_CLASS_NOT_DEFINED ||
- dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA ||
- dev->class >> 8 == PCI_CLASS_DISPLAY_VGA ||
- dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)
- {
- /*
- * All of these (may) have I/O scattered all around
- * and may not use i/o-base address registers at all.
- * So we just have to always enable I/O to these
- * devices.
- */
- cmd |= PCI_COMMAND_IO;
- }
-
- pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MASTER);
-
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, (disable_pci_burst) ? 0 : 32);
-
- if (bus_info != NULL)
- bus_info->conf_device(dev); /* Machine dependent configuration. */
-
- DBG_DEVS(("layout_dev: bus %d slot 0x%x VID 0x%x DID 0x%x class 0x%x\n",
- dev->bus->number, PCI_SLOT(dev->devfn), dev->vendor, dev->device, dev->class));
-}
-
-/*
- * static void layout_bus(struct pci_bus *bus)
- *
- * Layout memory and I/O for all devices on the given bus.
- *
- * Parameters:
- *
- * bus - bus.
- */
-
-static void __init layout_bus(struct pci_bus *bus)
-{
- unsigned int bio, bmem;
- struct pci_dev *dev;
-
- DBG_DEVS(("layout_bus: starting bus %d\n", bus->number));
-
- if (!bus->devices && !bus->children)
- return;
-
- /*
- * Align the current bases on appropriate boundaries (4K for
- * IO and 1MB for memory).
- */
-
- bio = io_base = ALIGN(io_base, 4*KB);
- bmem = mem_base = ALIGN(mem_base, 1*MB);
-
- /*
- * PCI devices might have been setup by a PCI BIOS emulation
- * running under TOS. In these cases there is a
- * window during which two devices may have an overlapping
- * address range. To avoid this causing trouble, we first
- * turn off the I/O and memory address decoders for all PCI
- * devices. They'll be re-enabled only once all address
- * decoders are programmed consistently.
- */
-
- DBG_DEVS(("layout_bus: disable_dev for bus %d\n", bus->number));
-
- for (dev = bus->devices; dev; dev = dev->sibling)
- {
- if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
- (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
- disable_dev(dev);
- }
-
- /*
- * Allocate space to each device:
- */
-
- DBG_DEVS(("layout_bus: starting bus %d devices\n", bus->number));
-
- for (dev = bus->devices; dev; dev = dev->sibling)
- {
- if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
- (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
- layout_dev(dev);
- }
-
- DBG_DEVS(("layout_bus: bus %d finished\n", bus->number));
-}
-
-/*
- * static void pcibios_fixup(void)
- *
- * Layout memory and I/O of all devices on the PCI bus if 'pci_modify' is
- * true. This might be necessary because not every m68k machine with a PCI
- * bus has a PCI BIOS. This function should be called right after
- * pci_scan_bus() in pcibios_init().
- */
-
-static void __init pcibios_fixup(void)
-{
- if (pci_modify)
- {
- /*
- * Set base addresses for allocation of I/O and memory space.
- */
-
- io_base = bus_info->io_space.start + IO_ALLOC_OFFSET;
- mem_base = bus_info->mem_space.start + MEM_ALLOC_OFFSET;
-
- /*
- * Scan the tree, allocating PCI memory and I/O space.
- */
-
- layout_bus(pci_bus_b(pci_root.next));
- }
-
- /*
- * Fix interrupt assignments, etc.
- */
-
- bus_info->fixup(pci_modify);
-}
-
-/*
- * static void pcibios_claim_resources(struct pci_bus *bus)
- *
- * Claim all resources that are assigned to devices on the given bus.
- *
- * Parameters:
- *
- * bus - bus.
- */
-
-static void __init pcibios_claim_resources(struct pci_bus *bus)
-{
- struct pci_dev *dev;
- int i;
-
- while (bus)
- {
- for (dev = bus->devices; (dev != NULL); dev = dev->sibling)
- {
- for (i = 0; i < PCI_NUM_RESOURCES; i++)
- {
- struct resource *r = &dev->resource[i];
- struct resource *pr;
- struct pci_bus_info *bus_info = (struct pci_bus_info *) dev->sysdata;
-
- if ((r->start == 0) || (r->parent != NULL))
- continue;
-#if 1
- if (r->flags & IORESOURCE_IO)
- pr = &bus_info->io_space;
- else
- pr = &bus_info->mem_space;
-#else
- if (r->flags & IORESOURCE_IO)
- pr = &ioport_resource;
- else
- pr = &iomem_resource;
-#endif
- if (request_resource(pr, r) < 0)
- {
- printk(KERN_ERR "PCI: Address space collision on region %d of device %s\n", i, dev->name);
- }
- }
- }
-
- if (bus->children)
- pcibios_claim_resources(bus->children);
-
- bus = bus->next;
- }
-}
-
-/*
- * int pcibios_assign_resource(struct pci_dev *dev, int i)
- *
- * Assign a new address to a PCI resource.
- *
- * Parameters:
- *
- * dev - device.
- * i - resource.
- *
- * Result: 0 if successful.
- */
-
-int __init pcibios_assign_resource(struct pci_dev *dev, int i)
-{
- struct resource *r = &dev->resource[i];
- struct resource *pr = pci_find_parent_resource(dev, r);
- unsigned long size = r->end + 1;
-
- if (!pr)
- return -EINVAL;
-
- if (r->flags & IORESOURCE_IO)
- {
- if (size > 0x100)
- return -EFBIG;
-
- if (allocate_resource(pr, r, size, bus_info->io_space.start +
- IO_ALLOC_OFFSET, bus_info->io_space.end, 1024))
- return -EBUSY;
- }
- else
- {
- if (allocate_resource(pr, r, size, bus_info->mem_space.start +
- MEM_ALLOC_OFFSET, bus_info->mem_space.end, size))
- return -EBUSY;
- }
-
- if (i < 6)
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, r->start);
-
- return 0;
-}
-
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
- struct pci_dev *dev;
- void *sysdata;
-
- sysdata = (bus->parent) ? bus->parent->sysdata : bus->sysdata;
-
- for (dev = bus->devices; (dev != NULL); dev = dev->sibling)
- dev->sysdata = sysdata;
-}
-
-void __init pcibios_init(void)
-{
- printk("Linux/m68k PCI BIOS32 revision %x.%02x\n", MAJOR_REV, MINOR_REV);
-
- bus_info = NULL;
-
-/* Hades code was:
- if (MACH_IS_HADES)
- bus_info = init_hades_pci();
-*/
-
- if (bus_info != NULL)
- {
- printk("PCI: Probing PCI hardware\n");
- pci_scan_bus(0, bus_info->m68k_pci_ops, bus_info);
- pcibios_fixup();
- pcibios_claim_resources(pci_root);
- }
- else
- printk("PCI: No PCI bus detected\n");
-}
-
-char * __init pcibios_setup(char *str)
-{
- if (!strcmp(str, "nomodify"))
- {
- pci_modify = 0;
- return NULL;
- }
- else if (!strcmp(str, "skipvga"))
- {
- skip_vga = 1;
- return NULL;
- }
- else if (!strcmp(str, "noburst"))
- {
- disable_pci_burst = 1;
- return NULL;
- }
-
- return str;
-}
-#endif /* CONFIG_PCI */
diff --git a/include/asm-m68k/dma.h b/include/asm-m68k/dma.h
index d0c9e61..4240fbc 100644
--- a/include/asm-m68k/dma.h
+++ b/include/asm-m68k/dma.h
@@ -11,10 +11,6 @@
extern int request_dma(unsigned int dmanr, const char * device_id); /* reserve a DMA channel */
extern void free_dma(unsigned int dmanr); /* release it again */
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
#define isa_dma_bridge_buggy (0)
-#endif
#endif /* _M68K_DMA_H */
diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 657187f..9e673e3 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -7,15 +7,12 @@
* - added skeleton for GG-II and Amiga PCMCIA
* 2/3/01 RZ: - moved a few more defs into raw_io.h
*
- * inX/outX/readX/writeX should not be used by any driver unless it does
- * ISA or PCI access. Other drivers should use function defined in raw_io.h
+ * inX/outX should not be used by any driver unless it does
+ * ISA access. Other drivers should use function defined in raw_io.h
* or define its own macros on top of these.
*
- * inX(),outX() are for PCI and ISA I/O
- * readX(),writeX() are for PCI memory
+ * inX(),outX() are for ISA I/O
* isa_readX(),isa_writeX() are for ISA memory
- *
- * moved mem{cpy,set}_*io inside CONFIG_PCI
*/
#ifndef _IO_H
@@ -256,10 +253,7 @@ static inline void isa_delay(void)
(ISA_SEX ? raw_outsl(isa_itl(port), (u32 *)(buf), (nr)) : \
raw_outsw_swapw(isa_itw(port), (u16 *)(buf), (nr)<<1))
-#endif /* CONFIG_ISA */
-
-#if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
#define inb isa_inb
#define inb_p isa_inb_p
#define outb isa_outb
@@ -282,55 +276,9 @@ static inline void isa_delay(void)
#define readw isa_readw
#define writeb isa_writeb
#define writew isa_writew
-#endif /* CONFIG_ISA */
-
-#if defined(CONFIG_PCI)
-
-#define readl(addr) in_le32(addr)
-#define writel(val,addr) out_le32((addr),(val))
-
-/* those can be defined for both ISA and PCI - it won't work though */
-#define readb(addr) in_8(addr)
-#define readw(addr) in_le16(addr)
-#define writeb(val,addr) out_8((addr),(val))
-#define writew(val,addr) out_le16((addr),(val))
-#define readb_relaxed(addr) readb(addr)
-#define readw_relaxed(addr) readw(addr)
-#define readl_relaxed(addr) readl(addr)
+#else /* CONFIG_ISA */
-#ifndef CONFIG_ISA
-#define inb(port) in_8(port)
-#define outb(val,port) out_8((port),(val))
-#define inw(port) in_le16(port)
-#define outw(val,port) out_le16((port),(val))
-#define inl(port) in_le32(port)
-#define outl(val,port) out_le32((port),(val))
-
-#else
-/*
- * kernel with both ISA and PCI compiled in, those have
- * conflicting defs for in/out. Simply consider port < 1024
- * ISA and everything else PCI. read,write not defined
- * in this case
- */
-#define inb(port) ((port)<1024 ? isa_inb(port) : in_8(port))
-#define inb_p(port) ((port)<1024 ? isa_inb_p(port) : in_8(port))
-#define inw(port) ((port)<1024 ? isa_inw(port) : in_le16(port))
-#define inw_p(port) ((port)<1024 ? isa_inw_p(port) : in_le16(port))
-#define inl(port) ((port)<1024 ? isa_inl(port) : in_le32(port))
-#define inl_p(port) ((port)<1024 ? isa_inl_p(port) : in_le32(port))
-
-#define outb(val,port) ((port)<1024 ? isa_outb((val),(port)) : out_8((port),(val)))
-#define outb_p(val,port) ((port)<1024 ? isa_outb_p((val),(port)) : out_8((port),(val)))
-#define outw(val,port) ((port)<1024 ? isa_outw((val),(port)) : out_le16((port),(val)))
-#define outw_p(val,port) ((port)<1024 ? isa_outw_p((val),(port)) : out_le16((port),(val)))
-#define outl(val,port) ((port)<1024 ? isa_outl((val),(port)) : out_le32((port),(val)))
-#define outl_p(val,port) ((port)<1024 ? isa_outl_p((val),(port)) : out_le32((port),(val)))
-#endif
-#endif /* CONFIG_PCI */
-
-#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI)
/*
* We need to define dummy functions for GENERIC_IOMAP support.
*/
@@ -357,11 +305,11 @@ static inline void isa_delay(void)
#define writeb(val,addr) out_8((addr),(val))
#define readw(addr) in_le16(addr)
#define writew(val,addr) out_le16((addr),(val))
-#endif
-#if !defined(CONFIG_PCI)
+
+#endif /* CONFIG_ISA */
+
#define readl(addr) in_le32(addr)
#define writel(val,addr) out_le32((addr),(val))
-#endif
#define mmiowb()
diff --git a/include/asm-m68k/pci.h b/include/asm-m68k/pci.h
index 678cb0b..aa8eb33 100644
--- a/include/asm-m68k/pci.h
+++ b/include/asm-m68k/pci.h
@@ -1,57 +1,6 @@
#ifndef _ASM_M68K_PCI_H
#define _ASM_M68K_PCI_H
-/*
- * asm-m68k/pci_m68k.h - m68k specific PCI declarations.
- *
- * Written by Wout Klaren.
- */
-
-#include <asm/scatterlist.h>
-
-struct pci_ops;
-
-/*
- * Structure with hardware dependent information and functions of the
- * PCI bus.
- */
-
-struct pci_bus_info
-{
- /*
- * Resources of the PCI bus.
- */
-
- struct resource mem_space;
- struct resource io_space;
-
- /*
- * System dependent functions.
- */
-
- struct pci_ops *m68k_pci_ops;
-
- void (*fixup)(int pci_modify);
- void (*conf_device)(struct pci_dev *dev);
-};
-
-#define pcibios_assign_all_busses() 0
-#define pcibios_scan_all_fns(a, b) 0
-
-static inline void pcibios_set_master(struct pci_dev *dev)
-{
- /* No special bus mastering setup handling */
-}
-
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
#define PCI_DMA_BUS_IS_PHYS (1)
#endif /* _ASM_M68K_PCI_H */
On Fri, Aug 29, 2008 at 09:07:56PM +1000, Greg Ungerer wrote:
>
> Hi Adrian,
Hi Greg,
> Adrian Bunk wrote:
>> On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
>...
>>> Only ever a handful where made, and that was in 1999.
>>> I doubt anyone could ever use the PCI interface on it
>>> in any useful way.
>>
>> So I can send a patch to remove the platform?
>
> Yeah, I guess we can add in back in of anyone complains.
> I don't know of any users of it anymore.
>...
Patch below.
> Regards
> Greg
cu
Adrian
<-- snip -->
Greg Ungerer said about this board:
Only ever a handful where made, and that was in 1999.
Signed-off-by: Adrian Bunk <[email protected]>
---
arch/m68knommu/Kconfig | 6 ------
arch/m68knommu/Makefile | 1 -
arch/m68knommu/include/asm/system.h | 2 +-
arch/m68knommu/platform/5307/config.c | 2 +-
4 files changed, 2 insertions(+), 9 deletions(-)
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 15ffd55..f43d50f 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -399,12 +399,6 @@ config M5307C3
help
Support for the Motorola M5307C3 board.
-config eLIA
- bool "Moreton Bay eLIA board support"
- depends on M5307
- help
- Support for the Moreton Bay eLIA board.
-
config SECUREEDGEMP3
bool "SnapGear SecureEdge/MP3 platform support"
depends on M5307
diff --git a/arch/m68knommu/Makefile b/arch/m68knommu/Makefile
index b63bbcf..fd0fb30 100644
--- a/arch/m68knommu/Makefile
+++ b/arch/m68knommu/Makefile
@@ -41,7 +41,6 @@ board-$(CONFIG_M5271EVB) := M5271EVB
board-$(CONFIG_M5275EVB) := M5275EVB
board-$(CONFIG_M5282EVB) := M5282EVB
board-$(CONFIG_ELITE) := eLITE
-board-$(CONFIG_eLIA) := eLIA
board-$(CONFIG_NETtel) := NETtel
board-$(CONFIG_SECUREEDGEMP3) := MP3
board-$(CONFIG_CLEOPATRA) := CLEOPATRA
diff --git a/arch/m68knommu/include/asm/system.h b/arch/m68knommu/include/asm/system.h
index 40f49de..4496c0a 100644
--- a/arch/m68knommu/include/asm/system.h
+++ b/arch/m68knommu/include/asm/system.h
@@ -230,7 +230,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
jmp 0xf0000400; \
"); \
})
-#elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
+#elif defined(CONFIG_NETtel) || \
defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
#define HARD_RESET_NOW() ({ \
asm(" \
diff --git a/arch/m68knommu/platform/5307/config.c b/arch/m68knommu/platform/5307/config.c
index 11cff66..724faf0 100644
--- a/arch/m68knommu/platform/5307/config.c
+++ b/arch/m68knommu/platform/5307/config.c
@@ -123,7 +123,7 @@ void __init config_BSP(char *commandp, int size)
{
mcf_setimr(MCFSIM_IMR_MASKALL);
-#if defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
+#if defined(CONFIG_NETtel) || \
defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
/* Copy command line from FLASH to local buffer... */
memcpy(commandp, (char *) 0xf0004000, size);
On Fri, Aug 29, 2008 at 02:13:24PM +1000, Greg Ungerer wrote:
> Hi Adrian,
Hi Greg,
> Adrian Bunk wrote:
>...
>> But COMEMPCI fails with a different error - this init/main.o build
>> error is present for CONFIG_PCI=y, CONFIG_COMEMPCI=n, so the dependency
>> of PCI on BROKEN is still required (unless it gets fixed).
>
> Unless I am mistaken there is now no need for the CONFIG_PCI option
> if selecting m68knommu. The only m68knommu platforms that had PCI
> as far as I know where those that use the comempci part.
>...
Patch to remove the few PCI bits (on top of the comempci removal) is
below.
> Regards
> Greg
cu
Adrian
<-- snip -->
This patch removes the no longer used PCI option.
Signed-off-by: Adrian Bunk <[email protected]>
---
arch/m68knommu/Kconfig | 13 -------------
arch/m68knommu/include/asm/dma-mapping.h | 4 ----
2 files changed, 17 deletions(-)
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index f43d50f..46b9c43 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -692,21 +692,8 @@ config ISA_DMA_API
depends on !M5272
default y
-menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
-
-config PCI
- bool "PCI support"
- help
- Support for PCI bus.
-
-source "drivers/pci/Kconfig"
-
source "drivers/pcmcia/Kconfig"
-source "drivers/pci/hotplug/Kconfig"
-
-endmenu
-
menu "Executable file formats"
source "fs/Kconfig.binfmt"
diff --git a/arch/m68knommu/include/asm/dma-mapping.h b/arch/m68knommu/include/asm/dma-mapping.h
index 6aeab18..1748f2b 100644
--- a/arch/m68knommu/include/asm/dma-mapping.h
+++ b/arch/m68knommu/include/asm/dma-mapping.h
@@ -1,10 +1,6 @@
#ifndef _M68KNOMMU_DMA_MAPPING_H
#define _M68KNOMMU_DMA_MAPPING_H
-#ifdef CONFIG_PCI
-#include <asm-generic/dma-mapping.h>
-#else
#include <asm-generic/dma-mapping-broken.h>
-#endif
#endif /* _M68KNOMMU_DMA_MAPPING_H */