[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>

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 000000000000..00261211dbfa
--- /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 */