sh: pci: Move the se7751 fixups in to arch/sh/drivers/pci/.

The se7751 was still doing the PCI fixups in its own board directory,
so we move it over to arch/sh/drivers/pci/ with the rest of the board
fixups. It has bitrotted significantly over the years, so will still
likely need a bit of work to bring back up to date.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 112 insertions, 0 deletions

diff --git a/arch/sh/drivers/pci/Makefile b/arch/sh/drivers/pci/Makefile
index fbebd73b22f6..e388a70d1463 100644
--- a/arch/sh/drivers/pci/Makefile
+++ b/arch/sh/drivers/pci/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_CPU_SH5)			+= pci-sh5.o ops-sh5.o
 obj-$(CONFIG_SH_DREAMCAST)              += ops-dreamcast.o fixups-dreamcast.o \
                                            pci-dreamcast.o
 obj-$(CONFIG_SH_SECUREEDGE5410)         += fixups-snapgear.o
+obj-$(CONFIG_SH_7751_SOLUTION_ENGINE)   += fixups-se7751.o
 obj-$(CONFIG_SH_RTS7751R2D)             += fixups-rts7751r2d.o
 obj-$(CONFIG_SH_SH03)                   += fixups-sh03.o
 obj-$(CONFIG_SH_HIGHLANDER)             += fixups-r7780rp.o
diff --git a/arch/sh/drivers/pci/fixups-se7751.c b/arch/sh/drivers/pci/fixups-se7751.c
new file mode 100644
index 000000000000..475fa9f0fe2c
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-se7751.c
@@ -0,0 +1,111 @@
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/io.h>
+#include "pci-sh4.h"
+
+int __init pcibios_map_platform_irq(u8 slot, u8 pin)
+{
+        switch (slot) {
+        case 0: return 13;
+        case 1: return 13;      /* AMD Ethernet controller */
+        case 2: return -1;
+        case 3: return -1;
+        case 4: return -1;
+        default:
+                printk("PCI: Bad IRQ mapping request for slot %d\n", slot);
+                return -1;
+        }
+}
+
+#define PCIMCR_MRSET_OFF        0xBFFFFFFF
+#define PCIMCR_RFSH_OFF         0xFFFFFFFB
+
+/*
+ * Only long word accesses of the PCIC's internal local registers and the
+ * configuration registers from the CPU is supported.
+ */
+#define PCIC_WRITE(x,v) writel((v), PCI_REG(x))
+#define PCIC_READ(x) readl(PCI_REG(x))
+
+/*
+ * Description:  This function sets up and initializes the pcic, sets
+ * up the BARS, maps the DRAM into the address space etc, etc.
+ */
+int pci_fixup_pcic(struct pci_channel *chan)
+{
+        unsigned long bcr1, wcr1, wcr2, wcr3, mcr;
+        unsigned short bcr2;
+
+        /*
+        * Initialize the slave bus controller on the pcic.  The values used
+        * here should not be hardcoded, but they should be taken from the bsc
+        * on the processor, to make this function as generic as possible.
+        * (i.e. Another sbc may usr different SDRAM timing settings -- in order
+        * for the pcic to work, its settings need to be exactly the same.)
+        */
+        bcr1 = (*(volatile unsigned long*)(SH7751_BCR1));
+        bcr2 = (*(volatile unsigned short*)(SH7751_BCR2));
+        wcr1 = (*(volatile unsigned long*)(SH7751_WCR1));
+        wcr2 = (*(volatile unsigned long*)(SH7751_WCR2));
+        wcr3 = (*(volatile unsigned long*)(SH7751_WCR3));
+        mcr = (*(volatile unsigned long*)(SH7751_MCR));
+
+        bcr1 = bcr1 | 0x00080000;  /* Enable Bit 19, BREQEN */
+        (*(volatile unsigned long*)(SH7751_BCR1)) = bcr1;
+
+        bcr1 = bcr1 | 0x40080000;  /* Enable Bit 19 BREQEN, set PCIC to slave */
+        PCIC_WRITE(SH7751_PCIBCR1, bcr1);        /* PCIC BCR1 */
+        PCIC_WRITE(SH7751_PCIBCR2, bcr2);     /* PCIC BCR2 */
+        PCIC_WRITE(SH7751_PCIWCR1, wcr1);     /* PCIC WCR1 */
+        PCIC_WRITE(SH7751_PCIWCR2, wcr2);     /* PCIC WCR2 */
+        PCIC_WRITE(SH7751_PCIWCR3, wcr3);     /* PCIC WCR3 */
+        mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
+        PCIC_WRITE(SH7751_PCIMCR, mcr);      /* PCIC MCR */
+
+
+        /* Enable all interrupts, so we know what to fix */
+        PCIC_WRITE(SH7751_PCIINTM, 0x0000c3ff);
+        PCIC_WRITE(SH7751_PCIAINTM, 0x0000380f);
+
+        /* Set up standard PCI config registers */
+        PCIC_WRITE(SH7751_PCICONF1,     0xF39000C7); /* Bus Master, Mem & I/O access */
+        PCIC_WRITE(SH7751_PCICONF2,     0x00000000); /* PCI Class code & Revision ID */
+        PCIC_WRITE(SH7751_PCICONF4,     0xab000001); /* PCI I/O address (local regs) */
+        PCIC_WRITE(SH7751_PCICONF5,     0x0c000000); /* PCI MEM address (local RAM)  */
+        PCIC_WRITE(SH7751_PCICONF6,     0xd0000000); /* PCI MEM address (unused)     */
+        PCIC_WRITE(SH7751_PCICONF11, 0x35051054); /* PCI Subsystem ID & Vendor ID */
+        PCIC_WRITE(SH7751_PCILSR0, 0x03f00000);   /* MEM (full 64M exposed)       */
+        PCIC_WRITE(SH7751_PCILSR1, 0x00000000);   /* MEM (unused)                 */
+        PCIC_WRITE(SH7751_PCILAR0, 0x0c000000);   /* MEM (direct map from PCI)    */
+        PCIC_WRITE(SH7751_PCILAR1, 0x00000000);   /* MEM (unused)                 */
+
+        /* Now turn it on... */
+        PCIC_WRITE(SH7751_PCICR, 0xa5000001);
+
+        /*
+        * Set PCIMBR and PCIIOBR here, assuming a single window
+        * (16M MEM, 256K IO) is enough.  If a larger space is
+        * needed, the readx/writex and inx/outx functions will
+        * have to do more (e.g. setting registers for each call).
+        */
+
+        /*
+        * Set the MBR so PCI address is one-to-one with window,
+        * meaning all calls go straight through... use BUG_ON to
+        * catch erroneous assumption.
+        */
+        BUG_ON(chan->mem_resource->start != SH7751_PCI_MEMORY_BASE);
+
+        PCIC_WRITE(SH7751_PCIMBR, chan->mem_resource->start);
+
+        /* Set IOBR for window containing area specified in pci.h */
+        PCIC_WRITE(SH7751_PCIIOBR, (chan->io_resource->start & SH7751_PCIIOBR_MASK));
+
+        /* All done, may as well say so... */
+        printk("SH7751 PCI: Finished initialization of the PCI controller\n");
+
+        return 1;
+}