The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/mv/orion/orion.c

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    1 /*-
    2  * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
    3  * All rights reserved.
    4  *
    5  * Developed by Semihalf.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of MARVELL nor the names of contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: releng/9.0/sys/arm/mv/orion/orion.c 209131 2010-06-13 13:28:53Z raj $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/bus.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/fdt.h>
   41 
   42 #include <arm/mv/mvreg.h>
   43 #include <arm/mv/mvvar.h>
   44 #include <arm/mv/mvwin.h>
   45 
   46 #if 0
   47 extern const struct obio_pci_irq_map pci_irq_map[];
   48 const struct obio_pci mv_pci_info[] = {
   49         { MV_TYPE_PCIE,
   50                 MV_PCIE_BASE,   MV_PCIE_SIZE,
   51                 MV_PCIE_IO_BASE, MV_PCIE_IO_SIZE,       4, 0x51,
   52                 MV_PCIE_MEM_BASE, MV_PCIE_MEM_SIZE,     4, 0x59,
   53                 NULL, MV_INT_PEX0
   54         },
   55 
   56         { MV_TYPE_PCI,
   57                 MV_PCI_BASE, MV_PCI_SIZE,
   58                 MV_PCI_IO_BASE, MV_PCI_IO_SIZE,         3, 0x51,
   59                 MV_PCI_MEM_BASE, MV_PCI_MEM_SIZE,       3, 0x59,
   60                 pci_irq_map, -1
   61         },
   62 
   63         { 0, 0, 0 }
   64 };
   65 #endif
   66 
   67 struct resource_spec mv_gpio_res[] = {
   68         { SYS_RES_MEMORY,       0,      RF_ACTIVE },
   69         { SYS_RES_IRQ,          0,      RF_ACTIVE },
   70         { SYS_RES_IRQ,          1,      RF_ACTIVE },
   71         { SYS_RES_IRQ,          2,      RF_ACTIVE },
   72         { SYS_RES_IRQ,          3,      RF_ACTIVE },
   73         { -1, 0 }
   74 };
   75 
   76 const struct decode_win idma_win_tbl[] = {
   77         { 0 },
   78 };
   79 const struct decode_win *idma_wins = idma_win_tbl;
   80 int idma_wins_no = 0;
   81 
   82 uint32_t
   83 get_tclk(void)
   84 {
   85         uint32_t sar;
   86 
   87         /*
   88          * On Orion TCLK is can be configured to 150 MHz or 166 MHz.
   89          * Current setting is read from Sample At Reset register.
   90          */
   91         /* XXX MPP addr should be retrieved from the DT */
   92         sar = bus_space_read_4(fdtbus_bs_tag, MV_MPP_BASE, SAMPLE_AT_RESET);
   93         sar = (sar & TCLK_MASK) >> TCLK_SHIFT;
   94         switch (sar) {
   95         case 1:
   96                 return (TCLK_150MHZ);
   97         case 2:
   98                 return (TCLK_166MHZ);
   99         default:
  100                 panic("Unknown TCLK settings!");
  101         }
  102 }

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