[PATCH] ppc64 iSeries: allow build with no PCI

This patch allows iSeries to build with CONFIG_PCI=n.  This is useful for
partitions that have only virtual I/O.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

11 files changed, 33 insertions, 12 deletions

diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index 5cb343883e4d..0f1fa289744e 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -323,7 +323,7 @@ config EISA
         bool
 
 config PCI
-        bool
+        bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES)
         default y
         help
           Find out whether your system includes a PCI bus. PCI is the name of
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index ebf9b3cbf33d..b5e167cf1a05 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -16,13 +16,13 @@ obj-y += vdso32/ vdso64/
 
 obj-$(CONFIG_PPC_OF) += of_device.o
 
-pci-obj-$(CONFIG_PPC_ISERIES)   += iSeries_pci.o iSeries_VpdInfo.o
+pci-obj-$(CONFIG_PPC_ISERIES)   += iSeries_pci.o iSeries_irq.o \
+                                iSeries_VpdInfo.o
 pci-obj-$(CONFIG_PPC_MULTIPLATFORM)     += pci_dn.o pci_direct_iommu.o
 
 obj-$(CONFIG_PCI)       += pci.o pci_iommu.o iomap.o $(pci-obj-y)
 
-obj-$(CONFIG_PPC_ISERIES) += iSeries_irq.o \
-                             HvCall.o HvLpConfig.o LparData.o \
+obj-$(CONFIG_PPC_ISERIES) += HvCall.o HvLpConfig.o LparData.o \
                              iSeries_setup.o ItLpQueue.o hvCall.o \
                              mf.o HvLpEvent.o iSeries_proc.o iSeries_htab.o \
                              iSeries_iommu.o
diff --git a/arch/ppc64/kernel/dma.c b/arch/ppc64/kernel/dma.c
index ce714c927134..4da8e31b2b61 100644
--- a/arch/ppc64/kernel/dma.c
+++ b/arch/ppc64/kernel/dma.c
@@ -15,8 +15,10 @@
 
 static struct dma_mapping_ops *get_dma_ops(struct device *dev)
 {
+#ifdef CONFIG_PCI
         if (dev->bus == &pci_bus_type)
                 return &pci_dma_ops;
+#endif
 #ifdef CONFIG_IBMVIO
         if (dev->bus == &vio_bus_type)
                 return &vio_dma_ops;
@@ -37,8 +39,10 @@ EXPORT_SYMBOL(dma_supported);
 
 int dma_set_mask(struct device *dev, u64 dma_mask)
 {
+#ifdef CONFIG_PCI
         if (dev->bus == &pci_bus_type)
                 return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
+#endif
 #ifdef CONFIG_IBMVIO
         if (dev->bus == &vio_bus_type)
                 return -EIO;
diff --git a/arch/ppc64/kernel/iSeries_iommu.c b/arch/ppc64/kernel/iSeries_iommu.c
index 4e1a47c8a802..f8ff1bb054dc 100644
--- a/arch/ppc64/kernel/iSeries_iommu.c
+++ b/arch/ppc64/kernel/iSeries_iommu.c
@@ -83,7 +83,7 @@ static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
         }
 }
 
-
+#ifdef CONFIG_PCI
 /*
  * This function compares the known tables to find an iommu_table
  * that has already been built for hardware TCEs.
@@ -159,6 +159,7 @@ void iommu_devnode_init_iSeries(struct iSeries_Device_Node *dn)
         else
                 kfree(tbl);
 }
+#endif
 
 static void iommu_dev_setup_iSeries(struct pci_dev *dev) { }
 static void iommu_bus_setup_iSeries(struct pci_bus *bus) { }
diff --git a/arch/ppc64/kernel/iSeries_setup.c b/arch/ppc64/kernel/iSeries_setup.c
index 3d3ed631499a..b31962436fe3 100644
--- a/arch/ppc64/kernel/iSeries_setup.c
+++ b/arch/ppc64/kernel/iSeries_setup.c
@@ -76,7 +76,11 @@ extern void ppcdbg_initialize(void);
 static void build_iSeries_Memory_Map(void);
 static void setup_iSeries_cache_sizes(void);
 static void iSeries_bolt_kernel(unsigned long saddr, unsigned long eaddr);
+#ifdef CONFIG_PCI
 extern void iSeries_pci_final_fixup(void);
+#else
+static void iSeries_pci_final_fixup(void) { }
+#endif
 
 /* Global Variables */
 static unsigned long procFreqHz;
@@ -876,6 +880,10 @@ static int set_spread_lpevents(char *str)
 }
 __setup("spread_lpevents=", set_spread_lpevents);
 
+#ifndef CONFIG_PCI
+void __init iSeries_init_IRQ(void) { }
+#endif
+
 void __init iSeries_early_setup(void)
 {
         iSeries_fixup_klimit();
diff --git a/arch/ppc64/kernel/sys_ppc32.c b/arch/ppc64/kernel/sys_ppc32.c
index 9c8e317c598d..118436e8085a 100644
--- a/arch/ppc64/kernel/sys_ppc32.c
+++ b/arch/ppc64/kernel/sys_ppc32.c
@@ -741,6 +741,7 @@ asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubu
 
 asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
 {
+#ifdef CONFIG_PCI
         struct pci_controller* hose;
         struct list_head *ln;
         struct pci_bus *bus = NULL;
@@ -786,7 +787,7 @@ asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
         case IOBASE_ISA_MEM:
                 return -EINVAL;
         }
-
+#endif  /* CONFIG_PCI */
         return -EOPNOTSUPP;
 }
 
diff --git a/arch/ppc64/lib/Makefile b/arch/ppc64/lib/Makefile
index bf7b5bbfc04e..76fbfa9f706f 100644
--- a/arch/ppc64/lib/Makefile
+++ b/arch/ppc64/lib/Makefile
@@ -12,7 +12,7 @@ lib-$(CONFIG_SMP) += locks.o
 
 # e2a provides EBCDIC to ASCII conversions.
 ifdef CONFIG_PPC_ISERIES
-obj-$(CONFIG_PCI)       += e2a.o
+obj-y += e2a.o
 endif
 
 lib-$(CONFIG_DEBUG_KERNEL) += sstep.o
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 257b8ee605e5..e3085b22a365 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -484,7 +484,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
         return virtr + wrote;
 }
 
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
 static ssize_t read_port(struct file * file, char __user * buf,
                          size_t count, loff_t *ppos)
 {
@@ -744,7 +744,7 @@ static struct file_operations null_fops = {
         .write          = write_null,
 };
 
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
 static struct file_operations port_fops = {
         .llseek         = memory_lseek,
         .read           = read_port,
@@ -804,7 +804,7 @@ static int memory_open(struct inode * inode, struct file * filp)
                 case 3:
                         filp->f_op = &null_fops;
                         break;
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
                 case 4:
                         filp->f_op = &port_fops;
                         break;
@@ -846,7 +846,7 @@ static const struct {
         {1, "mem",     S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
         {2, "kmem",    S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
         {3, "null",    S_IRUGO | S_IWUGO,           &null_fops},
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
+#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
         {4, "port",    S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
 #endif
         {5, "zero",    S_IRUGO | S_IWUGO,           &zero_fops},
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 6e44b46c9e9d..6a15703f1cb9 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -753,7 +753,7 @@ config SERIAL_MPC52xx_CONSOLE_BAUD
 
 config SERIAL_ICOM
         tristate "IBM Multiport Serial Adapter"
-        depends on PPC_ISERIES || PPC_PSERIES
+        depends on PCI && (PPC_ISERIES || PPC_PSERIES)
         select SERIAL_CORE
         help
           This driver is for a family of multiport serial adapters
diff --git a/include/asm-ppc64/dma.h b/include/asm-ppc64/dma.h
index d693b8026bc3..dfd1f69059ba 100644
--- a/include/asm-ppc64/dma.h
+++ b/include/asm-ppc64/dma.h
@@ -27,6 +27,8 @@
 /* Doesn't really apply... */
 #define MAX_DMA_ADDRESS  (~0UL)
 
+#if !defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI)
+
 #define dma_outb        outb
 #define dma_inb         inb
 
@@ -323,4 +325,5 @@ extern int isa_dma_bridge_buggy;
 #else                                                         
 #define isa_dma_bridge_buggy   (0)
 #endif
+#endif  /* !defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI) */
 #endif /* _ASM_DMA_H */
diff --git a/include/asm-ppc64/iommu.h b/include/asm-ppc64/iommu.h
index d9b53374d23a..729de5cc21d9 100644
--- a/include/asm-ppc64/iommu.h
+++ b/include/asm-ppc64/iommu.h
@@ -137,8 +137,12 @@ extern void iommu_init_early_pSeries(void);
 extern void iommu_init_early_iSeries(void);
 extern void iommu_init_early_u3(void);
 
+#ifdef CONFIG_PCI
 extern void pci_iommu_init(void);
 extern void pci_direct_iommu_init(void);
+#else
+static inline void pci_iommu_init(void) { }
+#endif
 
 extern void alloc_u3_dart_table(void);