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kernel/linux-imx6_3.14.28/arch/mips/pci/fixup-pmcmsp.c 8.06 KB
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  /*
   * 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(const 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.
  ");
  #endif
  	printk(KERN_WARNING "PCI: irq_tab returned %d for slot=%d pin=%d
  ",
  		irq_tab[slot][pin], slot, pin);
  
  	return irq_tab[slot][pin];
  }
  
  #endif	/* CONFIG_PCI */