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authorMarc St-Jean <stjeanma@pmc-sierra.com>2007-06-14 15:56:23 -0600
committerRalf Baechle <ralf@linux-mips.org>2007-07-10 17:33:03 +0100
commit6f95e60acf404e39d14030572c9033ddaca6f4de (patch)
tree49ea54ad6794b4879b6cb405c6daa5f0135ead5d /arch/mips/pci/fixup-pmcmsp.c
parent9267a30d1dc7dcd7cadb5eb6a5bbfed703feeefa (diff)
[MIPS] PMC MSP71xx PCI support
Patch to add PCI support for the PMC-Sierra MSP71xx devices. Signed-off-by: Marc St-Jean <Marc_St-Jean@pmc-sierra.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/pci/fixup-pmcmsp.c')
-rw-r--r--arch/mips/pci/fixup-pmcmsp.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/arch/mips/pci/fixup-pmcmsp.c b/arch/mips/pci/fixup-pmcmsp.c
new file mode 100644
index 00000000000..00261211dbf
--- /dev/null
+++ b/arch/mips/pci/fixup-pmcmsp.c
@@ -0,0 +1,216 @@
+/*
+ * PMC-Sierra MSP board specific pci fixups.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Copyright 2005-2007 PMC-Sierra, Inc
+ *
+ * Author: MontaVista Software, Inc.
+ * ppopov@mvista.com or source@mvista.com
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifdef CONFIG_PCI
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/byteorder.h>
+
+#include <msp_pci.h>
+#include <msp_cic_int.h>
+
+/* PCI interrupt pins */
+#define IRQ4 MSP_INT_EXT4
+#define IRQ5 MSP_INT_EXT5
+#define IRQ6 MSP_INT_EXT6
+
+#if defined(CONFIG_PMC_MSP7120_GW)
+/* Garibaldi Board IRQ wiring to PCI slots */
+static char irq_tab[][5] __initdata = {
+ /* INTA INTB INTC INTD */
+ {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
+ {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
+ {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
+ {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
+ {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
+ {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
+ {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
+ {0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */
+ {0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */
+ {0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */
+ {0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */
+ {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
+ {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
+ {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
+ {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
+ {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
+ {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
+ {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
+ {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
+ {0, IRQ4, IRQ4, 0, 0 }, /* 18 (AD[28]): slot 0 */
+ {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
+ {0, IRQ5, IRQ5, 0, 0 }, /* 20 (AD[30]): slot 1 */
+ {0, IRQ6, IRQ6, 0, 0 } /* 21 (AD[31]): slot 2 */
+};
+
+#elif defined(CONFIG_PMC_MSP7120_EVAL)
+
+/* MSP7120 Eval Board IRQ wiring to PCI slots */
+static char irq_tab[][5] __initdata = {
+ /* INTA INTB INTC INTD */
+ {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
+ {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
+ {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
+ {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
+ {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
+ {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
+ {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
+ {0, IRQ6, IRQ6, 0, 0 }, /* 6 (AD[16]): slot 3 (mini) */
+ {0, IRQ5, IRQ5, 0, 0 }, /* 7 (AD[17]): slot 2 (mini) */
+ {0, IRQ4, IRQ4, IRQ4, IRQ4}, /* 8 (AD[18]): slot 0 (PCI) */
+ {0, IRQ5, IRQ5, IRQ5, IRQ5}, /* 9 (AD[19]): slot 1 (PCI) */
+ {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
+ {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
+ {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
+ {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
+ {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
+ {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
+ {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
+ {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
+ {0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */
+ {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
+ {0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */
+ {0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */
+};
+
+#else
+
+/* Unknown board -- don't assign any IRQs */
+static char irq_tab[][5] __initdata = {
+ /* INTA INTB INTC INTD */
+ {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
+ {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
+ {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
+ {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
+ {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
+ {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
+ {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
+ {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
+ {0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */
+ {0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */
+ {0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */
+ {0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */
+ {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
+ {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
+ {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
+ {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
+ {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
+ {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
+ {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
+ {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
+ {0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */
+ {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
+ {0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */
+ {0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */
+};
+#endif
+
+/*****************************************************************************
+ *
+ * FUNCTION: pcibios_plat_dev_init
+ * _________________________________________________________________________
+ *
+ * DESCRIPTION: Perform platform specific device initialization at
+ * pci_enable_device() time.
+ * None are needed for the MSP7120 PCI Controller.
+ *
+ * INPUTS: dev - structure describing the PCI device
+ *
+ * OUTPUTS: none
+ *
+ * RETURNS: PCIBIOS_SUCCESSFUL
+ *
+ ****************************************************************************/
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION: pcibios_map_irq
+ * _________________________________________________________________________
+ *
+ * DESCRIPTION: Perform board supplied PCI IRQ mapping routine.
+ *
+ * INPUTS: dev - unused
+ * slot - PCI slot. Identified by which bit of the AD[] bus
+ * drives the IDSEL line. AD[10] is 0, AD[31] is
+ * slot 21.
+ * pin - numbered using the scheme of the PCI_INTERRUPT_PIN
+ * field of the config header.
+ *
+ * OUTPUTS: none
+ *
+ * RETURNS: IRQ number
+ *
+ ****************************************************************************/
+int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+#if !defined(CONFIG_PMC_MSP7120_GW) && !defined(CONFIG_PMC_MSP7120_EVAL)
+ printk(KERN_WARNING "PCI: unknown board, no PCI IRQs assigned.\n");
+#endif
+ printk(KERN_WARNING "PCI: irq_tab returned %d for slot=%d pin=%d\n",
+ irq_tab[slot][pin], slot, pin);
+
+ return irq_tab[slot][pin];
+}
+
+#endif /* CONFIG_PCI */
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