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powerpc: 83xx: pci: Remove need for get_immrbase from mpc83xx_add_bridge.

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Modify mpc83xx_add_bridge to get config space register base address from
the device tree instead of immr + hardcoded offset.

83xx pci nodes have this change:
    register properties now contain two address length tuples:
	First is the pci bridge register base, this has always been there.
	Second is the config base, this is new.

This is documented in dts-bindings/fsl/83xx-512x-pci.txt

The changes accomplish these things:
    mpc83xx_add_bridge no longer needs to call get_immrbase
    it uses hard coded addresses if the second register value is missing

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
John Rigby 2008-10-07 13:00:18 -06:00 committed by Kumar Gala
parent 4a015c3740
commit 5b70a09705
18 changed files with 111 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
Documentation/powerpc/dts-bindings/fsl/83xx-512x-pci.txt Normal file
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@ -0,0 +1,40 @@
* Freescale 83xx and 512x PCI bridges
Freescale 83xx and 512x SOCs include the same pci bridge core.
83xx/512x specific notes:
- reg: should contain two address length tuples
The first is for the internal pci bridge registers
The second is for the pci config space access registers
Example (MPC8313ERDB)
pci0: pci@e0008500 {
cell-index = <1>;
interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
interrupt-map = <
/* IDSEL 0x0E -mini PCI */
0x7000 0x0 0x0 0x1 &ipic 18 0x8
0x7000 0x0 0x0 0x2 &ipic 18 0x8
0x7000 0x0 0x0 0x3 &ipic 18 0x8
0x7000 0x0 0x0 0x4 &ipic 18 0x8
/* IDSEL 0x0F - PCI slot */
0x7800 0x0 0x0 0x1 &ipic 17 0x8
0x7800 0x0 0x0 0x2 &ipic 18 0x8
0x7800 0x0 0x0 0x3 &ipic 17 0x8
0x7800 0x0 0x0 0x4 &ipic 18 0x8>;
interrupt-parent = <&ipic>;
interrupts = <66 0x8>;
bus-range = <0x0 0x0>;
ranges = <0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000
0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000
0x01000000 0x0 0x00000000 0xe2000000 0x0 0x00100000>;
clock-frequency = <66666666>;
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8313erdb.dts
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@ -363,7 +363,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8315erdb.dts
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@ -318,7 +318,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc832x_mds.dts
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@ -423,7 +423,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc832x_rdb.dts
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@ -331,7 +331,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

6
arch/powerpc/boot/dts/mpc8349emitx.dts
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@ -254,7 +254,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};
@ -280,7 +281,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008600 0x100>;
reg = <0xe0008600 0x100 /* internal registers */
0xe0008380 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8349emitxgp.dts
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@ -228,7 +228,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008600 0x100>;
reg = <0xe0008600 0x100 /* internal registers */
0xe0008380 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

6
arch/powerpc/boot/dts/mpc834x_mds.dts
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@ -315,7 +315,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};
@ -376,7 +377,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008600 0x100>;
reg = <0xe0008600 0x100 /* internal registers */
0xe0008380 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc836x_mds.dts
View File

@ -426,7 +426,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc836x_rdk.dts
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@ -409,7 +409,8 @@
#interrupt-cells = <1>;
device_type = "pci";
compatible = "fsl,mpc8360-pci", "fsl,mpc8349-pci";
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
ranges = <0x02000000 0 0x90000000 0x90000000 0 0x10000000
0x42000000 0 0x80000000 0x80000000 0 0x10000000
0x01000000 0 0xe0300000 0xe0300000 0 0x00100000>;

3
arch/powerpc/boot/dts/mpc8377_mds.dts
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@ -378,7 +378,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8377_rdb.dts
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@ -319,7 +319,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8378_mds.dts
View File

@ -364,7 +364,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8378_rdb.dts
View File

@ -305,7 +305,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8379_mds.dts
View File

@ -392,7 +392,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/mpc8379_rdb.dts
View File

@ -333,7 +333,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

3
arch/powerpc/boot/dts/sbc8349.dts
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@ -272,7 +272,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
reg = <0xe0008500 0x100>;
reg = <0xe0008500 0x100 /* internal registers */
0xe0008300 0x8>; /* config space access registers */
compatible = "fsl,mpc8349-pci";
device_type = "pci";
};

54
arch/powerpc/sysdev/fsl_pci.c
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@ -1,7 +1,7 @@
/*
* MPC85xx/86xx PCI/PCIE support routing.
* MPC83xx/85xx/86xx PCI/PCIE support routing.
*
* Copyright 2007 Freescale Semiconductor, Inc
* Copyright 2007,2008 Freescale Semiconductor, Inc
*
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
* Recode: ZHANG WEI <wei.zhang@freescale.com>
@ -256,15 +256,42 @@ int __init mpc83xx_add_bridge(struct device_node *dev)
{
int len;
struct pci_controller *hose;
struct resource rsrc;
struct resource rsrc_reg;
struct resource rsrc_cfg;
const int *bus_range;
int primary = 1, has_address = 0;
phys_addr_t immr = get_immrbase();
int primary;
pr_debug("Adding PCI host bridge %s\n", dev->full_name);
/* Fetch host bridge registers address */
has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
if (of_address_to_resource(dev, 0, &rsrc_reg)) {
printk(KERN_WARNING "Can't get pci register base!\n");
return -ENOMEM;
}
memset(&rsrc_cfg, 0, sizeof(rsrc_cfg));
if (of_address_to_resource(dev, 1, &rsrc_cfg)) {
printk(KERN_WARNING
"No pci config register base in dev tree, "
"using default\n");
/*
* MPC83xx supports up to two host controllers
* one at 0x8500 has config space registers at 0x8300
* one at 0x8600 has config space registers at 0x8380
*/
if ((rsrc_reg.start & 0xfffff) == 0x8500)
rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300;
else if ((rsrc_reg.start & 0xfffff) == 0x8600)
rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380;
}
/*
* Controller at offset 0x8500 is primary
*/
if ((rsrc_reg.start & 0xfffff) == 0x8500)
primary = 1;
else
primary = 0;
/* Get bus range if any */
bus_range = of_get_property(dev, "bus-range", &len);
@ -281,22 +308,11 @@ int __init mpc83xx_add_bridge(struct device_node *dev)
hose->first_busno = bus_range ? bus_range[0] : 0;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
/* MPC83xx supports up to two host controllers one at 0x8500 from immrbar
* the other at 0x8600, we consider the 0x8500 the primary controller
*/
/* PCI 1 */
if ((rsrc.start & 0xfffff) == 0x8500) {
setup_indirect_pci(hose, immr + 0x8300, immr + 0x8304, 0);
}
/* PCI 2 */
if ((rsrc.start & 0xfffff) == 0x8600) {
setup_indirect_pci(hose, immr + 0x8380, immr + 0x8384, 0);
primary = 0;
}
setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 4, 0);
printk(KERN_INFO "Found MPC83xx PCI host bridge at 0x%016llx. "
"Firmware bus number: %d->%d\n",
(unsigned long long)rsrc.start, hose->first_busno,
(unsigned long long)rsrc_reg.start, hose->first_busno,
hose->last_busno);
pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",