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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6f95e60acf
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>
217 lines
10 KiB
C
217 lines
10 KiB
C
/*
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* PMC-Sierra MSP board specific pci fixups.
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*
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* Copyright 2001 MontaVista Software Inc.
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* Copyright 2005-2007 PMC-Sierra, Inc
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*
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* Author: MontaVista Software, Inc.
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* ppopov@mvista.com or source@mvista.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef CONFIG_PCI
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <asm/byteorder.h>
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#include <msp_pci.h>
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#include <msp_cic_int.h>
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/* PCI interrupt pins */
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#define IRQ4 MSP_INT_EXT4
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#define IRQ5 MSP_INT_EXT5
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#define IRQ6 MSP_INT_EXT6
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#if defined(CONFIG_PMC_MSP7120_GW)
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/* Garibaldi Board IRQ wiring to PCI slots */
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static char irq_tab[][5] __initdata = {
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/* INTA INTB INTC INTD */
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{0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
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{0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
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{0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
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{0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
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{0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
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{0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
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{0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
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{0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */
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{0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */
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{0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */
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{0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */
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{0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
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{0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
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{0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
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{0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
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{0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
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{0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
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{0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
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{0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
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{0, IRQ4, IRQ4, 0, 0 }, /* 18 (AD[28]): slot 0 */
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{0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
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{0, IRQ5, IRQ5, 0, 0 }, /* 20 (AD[30]): slot 1 */
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{0, IRQ6, IRQ6, 0, 0 } /* 21 (AD[31]): slot 2 */
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};
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#elif defined(CONFIG_PMC_MSP7120_EVAL)
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/* MSP7120 Eval Board IRQ wiring to PCI slots */
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static char irq_tab[][5] __initdata = {
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/* INTA INTB INTC INTD */
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{0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
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{0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
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{0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
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{0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
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{0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
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{0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
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{0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
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{0, IRQ6, IRQ6, 0, 0 }, /* 6 (AD[16]): slot 3 (mini) */
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{0, IRQ5, IRQ5, 0, 0 }, /* 7 (AD[17]): slot 2 (mini) */
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{0, IRQ4, IRQ4, IRQ4, IRQ4}, /* 8 (AD[18]): slot 0 (PCI) */
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{0, IRQ5, IRQ5, IRQ5, IRQ5}, /* 9 (AD[19]): slot 1 (PCI) */
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{0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
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{0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
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{0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
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{0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
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{0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
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{0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
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{0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
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{0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
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{0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */
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{0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
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{0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */
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{0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */
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};
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#else
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/* Unknown board -- don't assign any IRQs */
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static char irq_tab[][5] __initdata = {
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/* INTA INTB INTC INTD */
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{0, 0, 0, 0, 0 }, /* (AD[0]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[1]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[2]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[3]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[4]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[5]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[6]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[7]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[8]): Unused */
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{0, 0, 0, 0, 0 }, /* (AD[9]): Unused */
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{0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */
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{0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */
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{0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */
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{0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */
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{0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */
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{0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */
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{0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */
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{0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */
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{0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */
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{0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */
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{0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */
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{0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */
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{0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */
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{0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */
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{0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */
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{0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */
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{0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */
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{0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */
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{0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */
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{0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */
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{0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */
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{0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */
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};
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#endif
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/*****************************************************************************
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*
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* FUNCTION: pcibios_plat_dev_init
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* _________________________________________________________________________
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*
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* DESCRIPTION: Perform platform specific device initialization at
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* pci_enable_device() time.
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* None are needed for the MSP7120 PCI Controller.
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*
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* INPUTS: dev - structure describing the PCI device
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*
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* OUTPUTS: none
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*
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* RETURNS: PCIBIOS_SUCCESSFUL
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*
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****************************************************************************/
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int pcibios_plat_dev_init(struct pci_dev *dev)
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{
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return PCIBIOS_SUCCESSFUL;
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}
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/*****************************************************************************
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*
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* FUNCTION: pcibios_map_irq
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* _________________________________________________________________________
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*
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* DESCRIPTION: Perform board supplied PCI IRQ mapping routine.
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*
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* INPUTS: dev - unused
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* slot - PCI slot. Identified by which bit of the AD[] bus
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* drives the IDSEL line. AD[10] is 0, AD[31] is
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* slot 21.
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* pin - numbered using the scheme of the PCI_INTERRUPT_PIN
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* field of the config header.
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*
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* OUTPUTS: none
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*
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* RETURNS: IRQ number
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*
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****************************************************************************/
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int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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#if !defined(CONFIG_PMC_MSP7120_GW) && !defined(CONFIG_PMC_MSP7120_EVAL)
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printk(KERN_WARNING "PCI: unknown board, no PCI IRQs assigned.\n");
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#endif
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printk(KERN_WARNING "PCI: irq_tab returned %d for slot=%d pin=%d\n",
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irq_tab[slot][pin], slot, pin);
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return irq_tab[slot][pin];
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}
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#endif /* CONFIG_PCI */
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