[PATCH 2/4] ppc64: Split out pSeries specific code from rtas_pci.c
Arnd Bergmann
arnd at arndb.de
Wed Apr 20 10:15:24 EST 2005
BPA is using rtas for PCI but should not be confused by
pSeries code. This also avoids some #ifdefs. Other
platforms that want to use rtas_pci.c should also create
their own platform_pci.c with platform specific fixups.
Signed-off-by: Arnd Bergmann <arndb at de.ibm.com>
--- linux-2.6-ppc.orig/arch/ppc64/kernel/mpic.h 2005-04-01 13:29:21.078978944 -0500
+++ linux-2.6-ppc/arch/ppc64/kernel/mpic.h 2005-04-01 13:30:10.431932216 -0500
@@ -265,3 +265,6 @@ extern void mpic_send_ipi(unsigned int i
extern int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs);
/* This one gets to the primary mpic */
extern int mpic_get_irq(struct pt_regs *regs);
+
+/* global mpic for pSeries */
+extern struct mpic *pSeries_mpic;
--- linux-2.6-ppc.orig/arch/ppc64/kernel/pSeries_pci.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6-ppc/arch/ppc64/kernel/pSeries_pci.c 2005-04-01 13:29:25.018912520 -0500
@@ -0,0 +1,138 @@
+/*
+ * arch/ppc64/kernel/pSeries_pci.c
+ *
+ * Copyright (C) 2001 Dave Engebretsen, IBM Corporation
+ * Copyright (C) 2003 Anton Blanchard <anton at au.ibm.com>, IBM
+ *
+ * pSeries specific routines for PCI.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/string.h>
+
+#include <asm/pci-bridge.h>
+#include <asm/prom.h>
+
+#include "pci.h"
+
+static int __initdata s7a_workaround;
+
+#if 0
+void pcibios_name_device(struct pci_dev *dev)
+{
+ struct device_node *dn;
+
+ /*
+ * Add IBM loc code (slot) as a prefix to the device names for service
+ */
+ dn = pci_device_to_OF_node(dev);
+ if (dn) {
+ char *loc_code = get_property(dn, "ibm,loc-code", 0);
+ if (loc_code) {
+ int loc_len = strlen(loc_code);
+ if (loc_len < sizeof(dev->dev.name)) {
+ memmove(dev->dev.name+loc_len+1, dev->dev.name,
+ sizeof(dev->dev.name)-loc_len-1);
+ memcpy(dev->dev.name, loc_code, loc_len);
+ dev->dev.name[loc_len] = ' ';
+ dev->dev.name[sizeof(dev->dev.name)-1] = '\0';
+ }
+ }
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device);
+#endif
+
+static void __init check_s7a(void)
+{
+ struct device_node *root;
+ char *model;
+
+ root = of_find_node_by_path("/");
+ if (root) {
+ model = get_property(root, "model", NULL);
+ if (model && !strcmp(model, "IBM,7013-S7A"))
+ s7a_workaround = 1;
+ of_node_put(root);
+ }
+}
+
+static void __init pSeries_request_regions(void)
+{
+ if (!isa_io_base)
+ return;
+
+ request_region(0x20,0x20,"pic1");
+ request_region(0xa0,0x20,"pic2");
+ request_region(0x00,0x20,"dma1");
+ request_region(0x40,0x20,"timer");
+ request_region(0x80,0x10,"dma page reg");
+ request_region(0xc0,0x20,"dma2");
+}
+
+void __init pSeries_final_fixup(void)
+{
+ struct pci_dev *dev = NULL;
+
+ check_s7a();
+
+ for_each_pci_dev(dev) {
+ pci_read_irq_line(dev);
+ if (s7a_workaround) {
+ if (dev->irq > 16) {
+ dev->irq -= 3;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+ }
+ }
+
+ phbs_remap_io();
+ pSeries_request_regions();
+
+ pci_addr_cache_build();
+}
+
+/*
+ * Assume the winbond 82c105 is the IDE controller on a
+ * p610. We should probably be more careful in case
+ * someone tries to plug in a similar adapter.
+ */
+static void fixup_winbond_82c105(struct pci_dev* dev)
+{
+ int i;
+ unsigned int reg;
+
+ if (!(systemcfg->platform & PLATFORM_PSERIES))
+ return;
+
+ printk("Using INTC for W82c105 IDE controller.\n");
+ pci_read_config_dword(dev, 0x40, ®);
+ /* Enable LEGIRQ to use INTC instead of ISA interrupts */
+ pci_write_config_dword(dev, 0x40, reg | (1<<11));
+
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) {
+ /* zap the 2nd function of the winbond chip */
+ if (dev->resource[i].flags & IORESOURCE_IO
+ && dev->bus->number == 0 && dev->devfn == 0x81)
+ dev->resource[i].flags &= ~IORESOURCE_IO;
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
+ fixup_winbond_82c105);
--- linux-2.6-ppc.orig/arch/ppc64/kernel/rtas_pci.c 2005-04-01 13:28:56.169905768 -0500
+++ linux-2.6-ppc/arch/ppc64/kernel/rtas_pci.c 2005-04-01 13:29:25.019912368 -0500
@@ -1,12 +1,12 @@
/*
- * pSeries_pci.c
+ * arch/ppc64/kernel/rtas_pci.c
*
* Copyright (C) 2001 Dave Engebretsen, IBM Corporation
* Copyright (C) 2003 Anton Blanchard <anton at au.ibm.com>, IBM
*
- * pSeries specific routines for PCI.
+ * RTAS specific routines for PCI.
*
- * Based on code from pci.c and chrp_pci.c
+ * Based on code from pci.c, chrp_pci.c and pSeries_pci.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -48,10 +48,6 @@ static int write_pci_config;
static int ibm_read_pci_config;
static int ibm_write_pci_config;
-static int s7a_workaround;
-
-extern struct mpic *pSeries_mpic;
-
static int config_access_valid(struct device_node *dn, int where)
{
if (where < 256)
@@ -385,12 +381,12 @@ unsigned long __init find_and_init_phbs(
pci_process_bridge_OF_ranges(phb, node);
pci_setup_phb_io(phb, index == 0);
-
+#ifdef CONFIG_PPC_PSERIES
if (ppc64_interrupt_controller == IC_OPEN_PIC && pSeries_mpic) {
int addr = root_size_cells * (index + 2) - 1;
mpic_assign_isu(pSeries_mpic, index, opprop[addr]);
}
-
+#endif
index++;
}
@@ -448,46 +444,6 @@ struct pci_controller * __devinit init_p
}
EXPORT_SYMBOL(init_phb_dynamic);
-#if 0
-void pcibios_name_device(struct pci_dev *dev)
-{
- struct device_node *dn;
-
- /*
- * Add IBM loc code (slot) as a prefix to the device names for service
- */
- dn = pci_device_to_OF_node(dev);
- if (dn) {
- char *loc_code = get_property(dn, "ibm,loc-code", 0);
- if (loc_code) {
- int loc_len = strlen(loc_code);
- if (loc_len < sizeof(dev->dev.name)) {
- memmove(dev->dev.name+loc_len+1, dev->dev.name,
- sizeof(dev->dev.name)-loc_len-1);
- memcpy(dev->dev.name, loc_code, loc_len);
- dev->dev.name[loc_len] = ' ';
- dev->dev.name[sizeof(dev->dev.name)-1] = '\0';
- }
- }
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device);
-#endif
-
-static void check_s7a(void)
-{
- struct device_node *root;
- char *model;
-
- root = of_find_node_by_path("/");
- if (root) {
- model = get_property(root, "model", NULL);
- if (model && !strcmp(model, "IBM,7013-S7A"))
- s7a_workaround = 1;
- of_node_put(root);
- }
-}
-
/* RPA-specific bits for removing PHBs */
int pcibios_remove_root_bus(struct pci_controller *phb)
{
@@ -537,66 +493,3 @@ int pcibios_remove_root_bus(struct pci_c
return 0;
}
EXPORT_SYMBOL(pcibios_remove_root_bus);
-
-static void __init pSeries_request_regions(void)
-{
- if (!isa_io_base)
- return;
-
- request_region(0x20,0x20,"pic1");
- request_region(0xa0,0x20,"pic2");
- request_region(0x00,0x20,"dma1");
- request_region(0x40,0x20,"timer");
- request_region(0x80,0x10,"dma page reg");
- request_region(0xc0,0x20,"dma2");
-}
-
-void __init pSeries_final_fixup(void)
-{
- struct pci_dev *dev = NULL;
-
- check_s7a();
-
- for_each_pci_dev(dev) {
- pci_read_irq_line(dev);
- if (s7a_workaround) {
- if (dev->irq > 16) {
- dev->irq -= 3;
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
- }
- }
- }
-
- phbs_remap_io();
- pSeries_request_regions();
-
- pci_addr_cache_build();
-}
-
-/*
- * Assume the winbond 82c105 is the IDE controller on a
- * p610. We should probably be more careful in case
- * someone tries to plug in a similar adapter.
- */
-static void fixup_winbond_82c105(struct pci_dev* dev)
-{
- int i;
- unsigned int reg;
-
- if (!(systemcfg->platform & PLATFORM_PSERIES))
- return;
-
- printk("Using INTC for W82c105 IDE controller.\n");
- pci_read_config_dword(dev, 0x40, ®);
- /* Enable LEGIRQ to use INTC instead of ISA interrupts */
- pci_write_config_dword(dev, 0x40, reg | (1<<11));
-
- for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) {
- /* zap the 2nd function of the winbond chip */
- if (dev->resource[i].flags & IORESOURCE_IO
- && dev->bus->number == 0 && dev->devfn == 0x81)
- dev->resource[i].flags &= ~IORESOURCE_IO;
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
- fixup_winbond_82c105);
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