[PATCH 3/12] mips: PMC MSP71xx PCI support
Patch to add PCI support for the PMC-Sierra MSP71xx devices.
Reposting patches as a single set at the request of akpm.
Only 9 of 12 will be posted at this time, 3 more to follow
when cleanups are complete.
CCing linux-mips.org since minor changes have occured
during cleanup of driver patches for other lists.
Thanks,
Marc
Signed-off-by: Marc St-Jean <Marc_St-Jean@xxxxxxxxxxxxxx>
---
Re-posting patch with recommended changes:
-Fixed a few style issues.
arch/mips/pci/Makefile | 3
arch/mips/pci/fixup-pmcmsp.c | 219 +++++
arch/mips/pci/ops-pmcmsp.c | 1007 ++++++++++++++++++++++++++
arch/mips/pmc-sierra/msp71xx/msp_pci.c | 50 +
include/asm-mips/pmc-sierra/msp71xx/msp_pci.h | 208 +++++
5 files changed, 1487 insertions(+)
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index bf85995..5a7ab08 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -36,6 +36,9 @@ obj-$(CONFIG_MOMENCO_OCELOT) += fixup-ocelot.o pci-ocelot.o
obj-$(CONFIG_MOMENCO_OCELOT_3) += fixup-ocelot3.o
obj-$(CONFIG_MOMENCO_OCELOT_C) += fixup-ocelot-c.o pci-ocelot-c.o
obj-$(CONFIG_MOMENCO_OCELOT_G) += fixup-ocelot-g.o pci-ocelot-g.o
+obj-$(CONFIG_PMC_MSP7120_GW) += fixup-pmcmsp.o ops-pmcmsp.o
+obj-$(CONFIG_PMC_MSP7120_EVAL) += fixup-pmcmsp.o ops-pmcmsp.o
+obj-$(CONFIG_PMC_MSP7120_FPGA) += fixup-pmcmsp.o ops-pmcmsp.o
obj-$(CONFIG_PMC_YOSEMITE) += fixup-yosemite.o ops-titan.o ops-titan-ht.o \
pci-yosemite.o
obj-$(CONFIG_SGI_IP27) += ops-bridge.o pci-ip27.o
diff --git a/arch/mips/pci/fixup-pmcmsp.c b/arch/mips/pci/fixup-pmcmsp.c
new file mode 100644
index 0000000..7f97e68
--- /dev/null
+++ b/arch/mips/pci/fixup-pmcmsp.c
@@ -0,0 +1,219 @@
+/* $Id$ */
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Board specific pci fixups.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ppopov@xxxxxxxxxx or source@xxxxxxxxxx
+ *
+ * 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-mips/pmc-sierra/msp71xx/msp_pci.h>
+#include <asm-mips/pmc-sierra/msp71xx/msp_cic_int.h>
+#include <asm/byteorder.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-PCI) */
+ {0, IRQ5, IRQ5, 0, 0 }, /* 7 (AD[17]): slot 2 (mini-PCI) */
+ {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 */
+
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
new file mode 100644
index 0000000..6734db4
--- /dev/null
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -0,0 +1,1007 @@
+/* $Id$ */
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@xxxxxxxxxx or jsun@xxxxxxxxxx
+ *
+ * arch/mips/pci/ops-pmcmsp.c
+ * Define the pci_ops for PMC MSP PCI.
+ *
+ * Much of the code is derived from the original DDB5074 port by
+ * Geert Uytterhoeven <geert@xxxxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+#define PCI_COUNTERS 1
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+
+#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS)
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#endif /* CONFIG_PROC_FS && PCI_COUNTERS */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm-mips/pmc-sierra/msp71xx/msp_prom.h>
+#include <asm-mips/pmc-sierra/msp71xx/msp_cic_int.h>
+#include <asm-mips/pmc-sierra/msp71xx/msp_pci.h>
+#include <asm-mips/pmc-sierra/msp71xx/msp_regs.h>
+#include <asm/byteorder.h>
+
+#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
+#include <asm-mips/mipsmtregs.h>
+#endif
+
+
+#define PCI_ACCESS_READ 0
+#define PCI_ACCESS_WRITE 1
+
+
+#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS)
+static char proc_init;
+extern struct proc_dir_entry *proc_bus_pci_dir;
+unsigned int pci_int_count[32];
+
+static void pci_proc_init(void);
+
+/*****************************************************************************
+**
+** FUNCTION: read_msp_pci_counts
+** _________________________________________________________________________
+**
+** DESCRIPTION: Prints the count of how many times each PCI
+** interrupt has asserted. Can be invoked by the
+** /proc filesystem.
+**
+** INPUTS: page - part of STDOUT calculation
+** off - part of STDOUT calculation
+** count - part of STDOUT calculation
+** data - unused
+**
+** OUTPUTS: start - new start location
+** eof - end of file pointer
+**
+** RETURNS: len - STDOUT length
+**
+*****************************************************************************/
+static int read_msp_pci_counts(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int i;
+ int len = 0;
+ unsigned int intcount, total = 0;
+
+ for (i = 0; i < 32; ++i) {
+ intcount = pci_int_count[i];
+ if (intcount != 0) {
+ len += sprintf(page + len, "[%d] = %u\n", i, intcount);
+ total += intcount;
+ }
+ }
+
+ len += sprintf(page + len, "total = %u\n", total);
+ if (len <= off+count)
+ *eof = 1;
+
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+
+ return len;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: gen_pci_cfg_wr
+** _________________________________________________________________________
+**
+** DESCRIPTION: Generates a configuration write cycle for debug purposes.
+** The IDSEL line asserted and location and data written are
+** immaterial. Just want to be able to prove that a
+** configuration write can be correctly generated on the
+** PCI bus. Intent is that this function by invocable from
+** the /proc filesystem.
+**
+** INPUTS: page - part of STDOUT calculation
+** off - part of STDOUT calculation
+** count - part of STDOUT calculation
+** data - unused
+**
+** OUTPUTS: start - new start location
+** eof - end of file pointer
+**
+** RETURNS: len - STDOUT length
+**
+*****************************************************************************/
+static int gen_pci_cfg_wr(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ unsigned char where = 0; /* Write to static Device/Vendor ID */
+ unsigned char bus_num = 0; /* Bus 0 */
+ unsigned char dev_fn = 0xF; /* Arbitrary device number */
+ u32 wr_data = 0xFF00AA00; /* Arbitrary data */
+ mspPciRegs *preg = (void *)PCI_BASE_REG;
+ int len = 0;
+ unsigned long value;
+ volatile unsigned long *pcispace = (void *)PCI_CONFIG_SPACE_REG;
+ int intr;
+
+ len += sprintf(page + len, "PMC MSP PCI: Beginning\n");
+
+ if (proc_init == 0) {
+ pci_proc_init();
+ proc_init = ~0;
+ }
+
+ len += sprintf(page + len, "PMC MSP PCI: Before Cfg Wr\n");
+
+ /*
+ * Generate PCI Configuration Write Cycle
+ */
+
+ /* Clear cause register bits */
+ preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F);
+
+ /* Setup address that is to appear on PCI bus */
+ preg->config_addr = BPCI_CFGADDR_ENABLE |
+ (bus_num << BPCI_CFGADDR_BUSNUM_SHF) |
+ (dev_fn << BPCI_CFGADDR_FUNCTNUM_SHF) |
+ (where & 0xFC);
+
+ value = cpu_to_le32(wr_data);
+
+ /* Launch the PCI configuration write cycle */
+ *pcispace = value;
+
+
+ /*
+ * Check if the PCI configuration cycle (rd or wr) succeeded, by
+ * checking the status bits for errors like master or target abort.
+ */
+ intr = preg->if_status;
+
+ len += sprintf(page + len, "PMC MSP PCI: After Cfg Wr\n");
+
+ /* Handle STDOUT calculations */
+ if (len <= off+count)
+ *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+
+ return len;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: pci_proc_init
+** _________________________________________________________________________
+**
+** DESCRIPTION: Create entries in the /proc filesystem for debug access.
+**
+** INPUTS: none
+**
+** OUTPUTS: none
+**
+** RETURNS: none
+**
+*****************************************************************************/
+static void pci_proc_init(void)
+{
+ create_proc_read_entry("pmc_msp_pci_rd_cnt", 0, NULL,
+ read_msp_pci_counts, NULL);
+ create_proc_read_entry("pmc_msp_pci_cfg_wr", 0, NULL,
+ gen_pci_cfg_wr, NULL);
+}
+#endif /* CONFIG_PROC_FS && PCI_COUNTERS */
+
+
+spinlock_t bpci_lock = SPIN_LOCK_UNLOCKED;
+
+
+/*****************************************************************************
+**
+** STRUCT: pci_io_resource
+** _________________________________________________________________________
+**
+** DESCRIPTION: Defines the address range that pciauto() will use to
+** assign to the I/O BARs of PCI devices.
+**
+** Use the start and end addresses of the MSP7120 PCI Host
+** Controller I/O space, in the form that they appear on the
+** PCI bus AFTER MSP7120 has performed address translation.
+**
+** For I/O accesses, MSP7120 ignores OATRAN and maps I/O
+** accesses into the bottom 0xFFF region of address space,
+** so that is the range to put into the pci_io_resource
+** struct.
+**
+** In MSP4200, the start address was 0x04 instead of the expected
+** 0x00. Will just assume there was a good reason for this!
+**
+** NOTES: Linux, by default, will assign I/O space to the lowest
+** region of address space. Since MSP7120 and Linux,
+** by default, have no offset in between how they map, the
+** io_offset element of pci_controller struct should be set
+** to zero.
+** ELEMENTS:
+** name - String used for a meaningful name.
+**
+** start - Start address of MSP7120's I/O space, as MSP7120 presents
+** the address on the PCI bus.
+**
+** end - End address of MSP7120's I/O space, as MSP7120 presents
+** the address on the PCI bus.
+**
+** flags - Attributes indicating the type of resource. In this case,
+** indicate I/O space.
+**
+*****************************************************************************/
+static struct resource pci_io_resource = {
+ .name = "pci IO space",
+ .start = 0x04,
+ .end = 0x0FFF,
+ .flags = IORESOURCE_IO /* I/O space */
+};
+
+
+/*****************************************************************************
+**
+** STRUCT: pci_mem_resource
+** _________________________________________________________________________
+**
+** DESCRIPTION: Defines the address range that pciauto() will use to
+** assign to the memory BARs of PCI devices.
+**
+** The .start and .end values are dependent upon how address
+** translation is performed by the OATRAN regiser.
+**
+** The values to use for .start and .end are the values
+** in the form they appear on the PCI bus AFTER MSP7120 has
+** performed OATRAN address translation.
+**
+** ELEMENTS:
+** name - String used for a meaningful name.
+**
+** start - Start address of MSP7120's memory space, as MSP7120 presents
+** the address on the PCI bus.
+**
+** end - End address of MSP7120's memory space, as MSP7120 presents
+** the address on the PCI bus.
+**
+** flags - Attributes indicating the type of resource. In this case,
+** indicate memory space.
+**
+*****************************************************************************/
+static struct resource pci_mem_resource = {
+ .name = "pci memory space",
+ .start = MSP_PCI_SPACE_BASE,
+ .end = MSP_PCI_SPACE_END,
+ .flags = IORESOURCE_MEM /* memory space */
+};
+
+
+/*****************************************************************************
+**
+** FUNCTION: bpci_interrupt
+** _________________________________________________________________________
+**
+** DESCRIPTION: PCI status interrupt handler. Updates the count of how
+** many times each status bit has been set, then clears
+** the status bits. If the appropriate macros are defined,
+** these counts can be viewed via the /proc filesystem.
+**
+** INPUTS: irq - unused
+** dev_id - unused
+** pt_regs - unused
+**
+** OUTPUTS: none
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+**
+*****************************************************************************/
+static int bpci_interrupt(int irq, void *dev_id)
+{
+ mspPciRegs *preg = (void *)PCI_BASE_REG;
+ unsigned int stat = preg->if_status;
+
+#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS)
+ int i;
+ for (i = 0; i < 32; ++i) {
+ if ((1 << i) & stat)
+ ++pci_int_count[i];
+ }
+#endif /* PROC_FS && PCI_COUNTERS */
+
+ /* printk("PCI ISR: Status=%08X\n", stat); */
+
+ /* write to clear all asserted interrupts */
+ preg->if_status = stat;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_config_access
+** _________________________________________________________________________
+**
+** DESCRIPTION: Performs a PCI configuration access (rd or wr), then
+** checks that the access succeeded by querying MSP7120's
+** PCI status bits.
+**
+** INPUTS:
+** access_type - kind of PCI configuration cycle to perform
+** (read or write). Legal values are
+** PCI_ACCESS_WRITE and PCI_ACCESS_READ.
+**
+** bus - pointer to the bus number of the device to
+** be targetted for the configuration cycle.
+** The only element of the pci_bus structure
+** used is bus->number. This argument determines
+** if the configuration access will be Type 0 or
+** Type 1. Since MSP7120 assumes itself to be the
+** PCI Host, any non-zero bus->number generates
+** a Type 1 access.
+**
+** devfn - this is an 8-bit field. The lower three bits
+** specify the function number of the device to
+** be targetted for the configuration cycle, with
+** all three-bit combinations being legal. The
+** upper five bits specify the device number,
+** with legal values being 10 to 31.
+**
+** where - address within the Configuration Header
+** space to access.
+**
+** data - for write accesses, contains the data to
+** write.
+**
+** OUTPUTS:
+** data - for read accesses, contains the value read.
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** -1 - access failure
+**
+*****************************************************************************/
+int msp_pcibios_config_access(unsigned char access_type,
+ struct pci_bus *bus,
+ unsigned int devfn,
+ unsigned char where,
+ u32 *data)
+{
+ volatile unsigned long *pcispace = (void *)PCI_CONFIG_SPACE_REG;
+ mspPciRegs *preg = (void *)PCI_BASE_REG;
+ unsigned char bus_num = bus->number;
+ unsigned char dev_fn = (unsigned char)devfn;
+ unsigned long flags;
+ unsigned long intr;
+ unsigned long value;
+ static char pciirqflag;
+#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
+ unsigned int vpe_status;
+#endif
+
+#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS)
+ if (proc_init == 0) {
+ pci_proc_init();
+ proc_init = ~0;
+ }
+#endif /* CONFIG_PROC_FS && PCI_COUNTERS */
+
+ /*
+ * Just the first time this function invokes, allocate
+ * an interrupt line for PCI host status interrupts. The
+ * allocation assigns an interrupt handler to the interrupt.
+ */
+ if (pciirqflag == 0) {
+ request_irq(MSP_INT_PCI, /* Hardcoded internal MSP7120 wiring */
+ bpci_interrupt, /* Function to call when the IRQ occurs */
+ SA_SHIRQ | SA_INTERRUPT, /* Bit mask interrupt type flags */
+ "PMC MSP PCI Host", /* An ascii name for the claiming device */
+ preg); /* PCI Device ID from Config Header reg */
+ pciirqflag = ~0;
+ }
+
+#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
+ local_irq_save(flags);
+ vpe_status = dvpe();
+#else
+ spin_lock_irqsave(&bpci_lock, flags);
+#endif
+
+ /*
+ * Clear PCI cause register bits.
+ *
+ * In Polo, the PCI Host had a dedicated DMA called the
+ * Block Copy (not to be confused with the general purpose Block
+ * Copy Engine block). There appear to have been special interrupts
+ * for this Block Copy, called Block Copy 0 Fault (BC0F) and Block Copy 1
+ * Fault (BC1F). MSP4200 and MSP7120 don't have this dedicated Block Copy
+ * block, so these two interrupts are now marked reserved. In case the
+ * Block Copy is resurrected in a future design, maintain the code that
+ * treats these two interrupts specially.
+ *
+ * Write to clear all interrupts in the PCI status register, aside from
+ * BC0F and BC1F.
+ */
+ preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F);
+
+ /* Setup address that is to appear on PCI bus */
+ preg->config_addr = BPCI_CFGADDR_ENABLE |
+ (bus_num << BPCI_CFGADDR_BUSNUM_SHF) |
+ (dev_fn << BPCI_CFGADDR_FUNCTNUM_SHF) |
+ (where & 0xFC);
+
+ /* IF access is a PCI configuration write */
+ if (access_type == PCI_ACCESS_WRITE) {
+ value = cpu_to_le32(*data);
+ *pcispace = value;
+ } else {
+ /* ELSE access is a PCI configuration read */
+ value = le32_to_cpu(*pcispace);
+ *data = value;
+ }
+
+ /*
+ * Check if the PCI configuration cycle (rd or wr) succeeded, by
+ * checking the status bits for errors like master or target abort.
+ */
+ intr = preg->if_status;
+
+ /* Clear config access */
+ preg->config_addr = 0;
+
+ /* IF error occurred */
+ if (intr & ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F)) {
+ /* Clear status bits */
+ preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F);
+
+#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
+ evpe(vpe_status);
+ local_irq_restore(flags);
+#else
+ spin_unlock_irqrestore(&bpci_lock, flags);
+#endif
+
+ return -1;
+ }
+
+#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
+ evpe(vpe_status);
+ local_irq_restore(flags);
+#else
+ spin_unlock_irqrestore(&bpci_lock, flags);
+#endif
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_read_config_byte
+** _________________________________________________________________________
+**
+** DESCRIPTION: Read a byte from PCI configuration address spac * Since the hardware can't address 8 bit chunks
+** directly, read a 32-bit chunk, then mask off extraneous
+** bits.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the read is destined for.
+** devfn - device/function combination that the read is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+**
+** OUTPUTS val - read data
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** -1 - read access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_read_config_byte(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u32 *val)
+{
+ u32 data = 0;
+
+ /*
+ * If the config access did not complete normally (e.g., underwent master
+ * abort) do the PCI compliant thing, which is to supply an all ones value.
+ */
+ if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) {
+ *val = 0xFFFFFFFF;
+ return -1;
+ }
+
+ *val = (data >> ((where & 3) << 3)) & 0x0ff;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_read_config_word
+** _________________________________________________________________________
+**
+** DESCRIPTION: Read a word (16 bits) from PCI configuration address space.
+** Since the hardware can't address 16 bit chunks
+** directly, read a 32-bit chunk, then mask off extraneous
+** bits.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the read is destined for.
+** devfn - device/function combination that the read is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+**
+** OUTPUTS val - read data
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** PCIBIOS_BAD_REGISTER_NUMBER - bad register address
+** -1 - read access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_read_config_word(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u32 *val)
+{
+ u32 data = 0;
+
+ /* if (where & 1) */ /* Michael Penner, Nov 24, 2005 commented out
+ * non-compliant code. Should allow word access
+ * to configuration registers, with only exception
+ * being when the word access would wrap around
+ * into the next dword.
+ */
+ if ((where & 3) == 3) {
+ *val = 0xFFFFFFFF;
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+ }
+
+ /*
+ * If the config access did not complete normally (e.g., underwent master
+ * abort) do the PCI compliant thing, which is to supply an all ones value.
+ */
+ if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) {
+ *val = 0xFFFFFFFF;
+ return -1;
+ }
+
+ *val = (data >> ((where & 3) << 3)) & 0x0ffff;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_read_config_dword
+** _________________________________________________________________________
+**
+** DESCRIPTION: Read a double word (32 bits) from PCI configuration
+** address space.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the read is destined for.
+** devfn - device/function combination that the read is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+**
+** OUTPUTS val - read data
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** PCIBIOS_BAD_REGISTER_NUMBER - bad register address
+** -1 - read access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_read_config_dword(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u32 *val)
+{
+ u32 data = 0;
+
+ /*
+ * Address must be dword aligned.
+ */
+ if (where & 3) {
+ *val = 0xFFFFFFFF;
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+ }
+
+ /*
+ * If the config access did not complete normally (e.g., underwent master
+ * abort) do the PCI compliant thing, which is to supply an all ones value.
+ */
+ if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) {
+ *val = 0xFFFFFFFF;
+ return -1;
+ }
+
+ *val = data;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_write_config_byte
+** _________________________________________________________________________
+**
+** DESCRIPTION: Write a byte to PCI configuration address space.
+** Since the hardware can't address 8 bit chunks
+** directly, a read-modify-write is performed.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the write is destined for.
+** devfn - device/function combination that the write is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+** val - value to write
+**
+** OUTPUTS none
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** -1 - write access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_write_config_byte(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u8 val)
+{
+ u32 data = 0;
+
+ /* read config space */
+ if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+ return -1;
+
+ /* modify the byte within the dword */
+ data = (data & ~(0xff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+
+ /* write back the full dword */
+ if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+ return -1;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_write_config_word
+** _________________________________________________________________________
+**
+** DESCRIPTION: Write a word (16-bits) to PCI configuration address space.
+** Since the hardware can't address 16 bit chunks
+** directly, a read-modify-write is performed.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the write is destined for.
+** devfn - device/function combination that the write is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+** val - value to write
+**
+** OUTPUTS none
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** PCIBIOS_BAD_REGISTER_NUMBER - bad register address
+** -1 - write access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_write_config_word(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u16 val)
+{
+ u32 data = 0;
+
+ /* MBGP Nov 24, 2005, fixed non-compliance: if (where & 1) */
+ if ((where & 3) == 3)
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
+ /* read config space */
+ if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+ return -1;
+
+ /* modify the word within the dword */
+ data = (data & ~(0xffff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+
+ /* write back the full dword */
+ if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+ return -1;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_write_config_dword
+** _________________________________________________________________________
+**
+** DESCRIPTION: Write a double word (32-bits) to PCI configuration address
+** space.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the write is destined for.
+** devfn - device/function combination that the write is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+** val - value to write
+**
+** OUTPUTS none
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** PCIBIOS_BAD_REGISTER_NUMBER - bad register address
+** -1 - write access failure
+**
+*****************************************************************************/
+static int
+msp_pcibios_write_config_dword(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ u32 val)
+{
+ /* check that address is dword aligned */
+ if (where & 3)
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
+ /* perform write */
+ if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val))
+ return -1;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_read_config
+** _________________________________________________________________________
+**
+** DESCRIPTION: Interface the PCI configuration read request with
+** the appropriate function, based on how many bytes
+** the read request is.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the write is destined for.
+** devfn - device/function combination that the write is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+** size - in units of bytes, should be 1, 2, or 4.
+**
+** OUTPUTS val - value read, with any extraneous bytes masked
+** to zero.
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** -1 - failure
+**
+*****************************************************************************/
+int
+msp_pcibios_read_config(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ int size,
+ u32 *val)
+{
+ if (size == 1) {
+ if (msp_pcibios_read_config_byte(bus, devfn, where, val)) {
+ return -1;
+ }
+ } else if (size == 2) {
+ if (msp_pcibios_read_config_word(bus, devfn, where, val)) {
+ return -1;
+ }
+ } else if (size == 4) {
+ if (msp_pcibios_read_config_dword(bus, devfn, where, val)) {
+ return -1;
+ }
+ } else {
+ *val = 0xFFFFFFFF;
+ return -1;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pcibios_write_config
+** _________________________________________________________________________
+**
+** DESCRIPTION: Interface the PCI configuration write request with
+** the appropriate function, based on how many bytes
+** the read request is.
+**
+** INPUTS bus - structure containing attributes for the PCI bus
+** that the write is destined for.
+** devfn - device/function combination that the write is
+** destined for.
+** where - register within the Configuration Header space
+** to access.
+** size - in units of bytes, should be 1, 2, or 4.
+** val - value to write
+**
+** OUTPUTS: none
+**
+** RETURNS: PCIBIOS_SUCCESSFUL - success
+** -1 - failure
+**
+*****************************************************************************/
+int
+msp_pcibios_write_config(struct pci_bus *bus,
+ unsigned int devfn,
+ int where,
+ int size,
+ u32 val)
+{
+ if (size == 1) {
+ if (msp_pcibios_write_config_byte(bus, devfn, where, (u8)(0xFF & val))) {
+ return -1;
+ }
+ } else if (size == 2) {
+ if (msp_pcibios_write_config_word(bus, devfn, where, (u16)(0xFFFF & val))) {
+ return -1;
+ }
+ } else if (size == 4) {
+ if (msp_pcibios_write_config_dword(bus, devfn, where, val)) {
+ return -1;
+ }
+ } else {
+ return -1;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+
+/*****************************************************************************
+**
+** STRUCTURE: msp_pci_ops
+** _________________________________________________________________________
+**
+** DESCRIPTION: structure to abstract the hardware specific PCI
+** configuration accesses.
+**
+** ELEMENTS:
+** read - function for Linux to generate PCI Configuration reads.
+** write - function for Linux to generate PCI Configuration writes.
+**
+*****************************************************************************/
+struct pci_ops msp_pci_ops = {
+ .read = msp_pcibios_read_config,
+ .write = msp_pcibios_write_config
+};
+
+
+/*****************************************************************************
+**
+** STRUCTURE: msp_pci_controller
+** _________________________________________________________________________
+**
+** Describes the attributes of the MSP7120 PCI Host Controller
+**
+** ELEMENTS:
+** pci_ops - abstracts the hardware specific PCI configuration
+** accesses.
+**
+** mem_resource - address range pciauto() uses to assign to PCI device
+** memory BARs.
+**
+** mem_offset - offset between how MSP7120 outbound PCI memory
+** transaction addresses appear on the PCI bus and how Linux
+** wants to configure memory BARs of the PCI devices.
+** MSP7120 does nothing funky, so just set to zero.
+**
+** io_resource - address range pciauto() uses to assign to PCI device
+** I/O BARs.
+**
+** io_offset - offset between how MSP7120 outbound PCI I/O
+** transaction addresses appear on the PCI bus and how
+** Linux defaults to configure I/O BARs of the PCI devices.
+** MSP7120 maps outbound I/O accesses into the bottom
+** bottom 4K of PCI address space (and ignores OATRAN).
+** Since the Linux default is to configure I/O BARs to the
+** bottom 4K, no special offset is needed. Just set to zero.
+**
+*****************************************************************************/
+static struct pci_controller msp_pci_controller = {
+ .pci_ops = &msp_pci_ops,
+ .mem_resource = &pci_mem_resource,
+ .mem_offset = 0,
+ .io_resource = &pci_io_resource,
+ .io_offset = 0
+};
+
+
+/*****************************************************************************
+**
+** FUNCTION: msp_pci_init
+** _________________________________________________________________________
+**
+** DESCRIPTION: Initialize the PCI Host Controller and register it with
+** Linux so Linux can seize control of the PCI bus.
+**
+*****************************************************************************/
+void __init msp_pci_init(void)
+{
+ mspPciRegs *preg = (void *)PCI_BASE_REG;
+ u32 id;
+
+ /* Extract Device ID */
+ id = (MSP_PCI_READ_REG32(PCI_JTAG_DEVID_REG, 0) >> 12) & 0x0FFFF;
+
+ /*
+ * Check if JTAG ID identifies MSP7120
+ */
+ if (!MSP_HAS_PCI(id)) {
+ printk("PCI: No PCI; id reads as %x\n", id);
+ goto no_pci;
+ }
+
+ /*
+ * Enable flushing of the PCI-SDRAM queue upon a read
+ * of the SDRAM's Memory Configuration Register.
+ */
+ *(unsigned long *)QFLUSH_REG_1 = 3;
+
+ /*
+ * Configure PCI Host Controller.
+ */
+ preg->if_status = ~0; /* Clear cause register bits */
+ preg->config_addr = 0; /* Clear config access */
+ preg->oatran = MSP_PCI_OATRAN; /* PCI outbound addr translation */
+ preg->if_mask = 0xF8BF87C0; /* Enable all PCI status interrupts */
+
+ /* configure so inb(), outb(), and family are functional */
+ set_io_port_base(MSP_PCI_IOSPACE_BASE);
+
+ /* Tell Linux the details of the MSP7120 PCI Host Controller */
+ register_pci_controller(&msp_pci_controller);
+
+ return;
+
+no_pci:
+ /* Disable PCI channel */
+ printk("PCI: no host PCI bus detected\n");
+ return;
+}
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_pci.c b/arch/mips/pmc-sierra/msp71xx/msp_pci.c
new file mode 100644
index 0000000..f764fe7
--- /dev/null
+++ b/arch/mips/pmc-sierra/msp71xx/msp_pci.c
@@ -0,0 +1,50 @@
+/*
+ * The setup file for PCI related hardware on PMC-Sierra MSP processors.
+ *
+ * Copyright 2005-2006 PMC-Sierra, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+
+#include <msp_prom.h>
+#include <msp_regs.h>
+
+extern void msp_pci_init(void);
+
+static int __init msp_pci_setup(void)
+{
+#if 0 /* Linux 2.6 initialization code to be completed */
+ if (getdeviceid() & DEV_ID_SINGLE_PC) {
+ /* If single card mode */
+ slmRegs *sreg = (slmRegs *) SREG_BASE;
+
+ sreg->single_pc_enable = SINGLE_PCCARD;
+ }
+#endif
+
+ msp_pci_init();
+
+ return 0;
+}
+
+subsys_initcall(msp_pci_setup);
diff --git a/include/asm-mips/pmc-sierra/msp71xx/msp_pci.h b/include/asm-mips/pmc-sierra/msp71xx/msp_pci.h
new file mode 100644
index 0000000..c205d1e
--- /dev/null
+++ b/include/asm-mips/pmc-sierra/msp71xx/msp_pci.h
@@ -0,0 +1,208 @@
+/*
+ * Copyright (c) 2000-2006 PMC-Sierra INC.
+ *
+ * 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 program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * 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.
+ *
+ * PMC-SIERRA INC. DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef _MSP_PCI_H_
+#define _MSP_PCI_H_
+
+#define MSP_HAS_PCI(ID) (((u32)(ID) <= 0x4236) && ((u32)(ID) >= 0x4220))
+
+/*
+ * It is convenient to program the OATRAN register so that
+ * Athena virtual address space and PCI address space are
+ * the same. This is not a requirement, just a convenience.
+ *
+ * The only hard restrictions on the value of OATRAN is that
+ * OATRAN must not be programmed to allow translated memory
+ * addresses to fall within the lowest 512MB of
+ * PCI address space. This region is hardcoded
+ * for use as Athena PCI Host Controller target
+ * access memory space to the Athena's SDRAM.
+ *
+ * Note that OATRAN applies only to memory accesses, not
+ * to I/O accesses.
+ *
+ * To program OATRAN to make Athena virtual address space
+ * and PCI address space have the same values, OATRAN
+ * is to be programmed to 0xB8000000. The top seven
+ * bits of the value mimic the seven bits clipped off
+ * by the PCI Host controller.
+ *
+ * With OATRAN at the said value, when the CPU does
+ * an access to its virtual address at, say 0xB900_5000,
+ * the address appearing on the PCI bus will be
+ * 0xB900_5000.
+ * - Michael Penner
+ */
+#define MSP_PCI_OATRAN 0xB8000000UL
+
+#define MSP_PCI_SPACE_BASE (MSP_PCI_OATRAN + 0x1002000UL)
+#define MSP_PCI_SPACE_SIZE (0x3000000UL - 0x2000)
+#define MSP_PCI_SPACE_END \
+ (MSP_PCI_SPACE_BASE + MSP_PCI_SPACE_SIZE - 1)
+#define MSP_PCI_IOSPACE_BASE (MSP_PCI_OATRAN + 0x1001000UL)
+#define MSP_PCI_IOSPACE_SIZE 0x1000
+#define MSP_PCI_IOSPACE_END \
+ (MSP_PCI_IOSPACE_BASE + MSP_PCI_IOSPACE_SIZE - 1)
+
+/* IRQ for PCI status interrupts */
+#define PCI_STAT_IRQ 20
+
+#define QFLUSH_REG_1 0xB7F40000
+
+typedef volatile unsigned int pcireg;
+typedef void * volatile ppcireg;
+
+typedef struct blockCopy_st
+{
+ pcireg unused1; /* +0x00 */
+ pcireg unused2; /* +0x04 */
+ ppcireg unused3; /* +0x08 */
+ ppcireg unused4; /* +0x0C */
+ pcireg unused5; /* +0x10 */
+ pcireg unused6; /* +0x14 */
+ pcireg unused7; /* +0x18 */
+ ppcireg unused8; /* +0x1C */
+ ppcireg unused9; /* +0x20 */
+ pcireg unusedA; /* +0x24 */
+ ppcireg unusedB; /* +0x28 */
+ ppcireg unusedC; /* +0x2C */
+} pciBlockCopy;
+
+enum
+{
+ config_device_vendor, /* 0 */
+ config_status_command, /* 1 */
+ config_class_revision, /* 2 */
+ config_BIST_header_latency_cache, /* 3 */
+ config_BAR0, /* 4 */
+ config_BAR1, /* 5 */
+ config_BAR2, /* 6 */
+ config_not_used7, /* 7 */
+ config_not_used8, /* 8 */
+ config_not_used9, /* 9 */
+ config_CIS, /* 10 */
+ config_subsystem, /* 11 */
+ config_not_used12, /* 12 */
+ config_capabilities, /* 13 */
+ config_not_used14, /* 14 */
+ config_lat_grant_irq, /* 15 */
+ config_message_control,/* 16 */
+ config_message_addr, /* 17 */
+ config_message_data, /* 18 */
+ config_VPD_addr, /* 19 */
+ config_VPD_data, /* 20 */
+ config_maxregs /* 21 - number of registers */
+};
+
+typedef struct mspPci_st
+{
+ pcireg hop_unused_00; /* +0x00 */
+ pcireg hop_unused_04; /* +0x04 */
+ pcireg hop_unused_08; /* +0x08 */
+ pcireg hop_unused_0C; /* +0x0C */
+ pcireg hop_unused_10; /* +0x10 */
+ pcireg hop_unused_14; /* +0x14 */
+ pcireg hop_unused_18; /* +0x18 */
+ pcireg hop_unused_1C; /* +0x1C */
+ pcireg hop_unused_20; /* +0x20 */
+ pcireg hop_unused_24; /* +0x24 */
+ pcireg hop_unused_28; /* +0x28 */
+ pcireg hop_unused_2C; /* +0x2C */
+ pcireg hop_unused_30; /* +0x30 */
+ pcireg hop_unused_34; /* +0x34 */
+ pcireg if_control; /* +0x38 */
+ pcireg oatran; /* +0x3C */
+ pcireg reset_ctl; /* +0x40 */
+ pcireg config_addr; /* +0x44 */
+ pcireg hop_unused_48; /* +0x48 */
+ pcireg msg_signaled_int_status; /* +0x4C */
+ pcireg msg_signaled_int_mask; /* +0x50 */
+ pcireg if_status; /* +0x54 */
+ pcireg if_mask; /* +0x58 */
+ pcireg hop_unused_5C; /* +0x5C */
+ pcireg hop_unused_60; /* +0x60 */
+ pcireg hop_unused_64; /* +0x64 */
+ pcireg hop_unused_68; /* +0x68 */
+ pcireg hop_unused_6C; /* +0x6C */
+ pcireg hop_unused_70; /* +0x70 */
+
+ pciBlockCopy pci_bc[2] __attribute__((aligned(64)));
+
+ pcireg error_hdr1; /* +0xE0 */
+ pcireg error_hdr2; /* +0xE4 */
+
+ pcireg config[config_maxregs] __attribute__((aligned(256)));
+
+} mspPciRegs;
+
+
+#define BPCI_CFGADDR_BUSNUM_SHF 16
+#define BPCI_CFGADDR_FUNCTNUM_SHF 8
+#define BPCI_CFGADDR_REGNUM_SHF 2
+#define BPCI_CFGADDR_ENABLE (1<<31)
+
+#define BPCI_IFCONTROL_RTO (1<<20) /* Retry timeout */
+#define BPCI_IFCONTROL_HCE (1<<16) /* Host configuration enable */
+#define BPCI_IFCONTROL_CTO_SHF 12 /* Shift count for CTO bits */
+#define BPCI_IFCONTROL_SE (1<<5) /* Enable exceptions on errors */
+#define BPCI_IFCONTROL_BIST (1<<4) /* Use BIST in per. mode */
+#define BPCI_IFCONTROL_CAP (1<<3) /* Enable capabilities */
+#define BPCI_IFCONTROL_MMC_SHF 0 /* Shift count for MMC bits */
+
+#define BPCI_IFSTATUS_MGT (1<<8) /* Master Grant timeout */
+#define BPCI_IFSTATUS_MTT (1<<9) /* Master TRDY timeout */
+#define BPCI_IFSTATUS_MRT (1<<10) /* Master retry timeout */
+#define BPCI_IFSTATUS_BC0F (1<<13) /* Block copy 0 fault */
+#define BPCI_IFSTATUS_BC1F (1<<14) /* Block copy 1 fault */
+#define BPCI_IFSTATUS_PCIU (1<<15) /* PCI unable to respond */
+#define BPCI_IFSTATUS_BSIZ (1<<16) /* PCI access with illegal size */
+#define BPCI_IFSTATUS_BADD (1<<17) /* PCI access with illegal addr */
+#define BPCI_IFSTATUS_RTO (1<<18) /* Retry time out */
+#define BPCI_IFSTATUS_SER (1<<19) /* System error */
+#define BPCI_IFSTATUS_PER (1<<20) /* Parity error */
+#define BPCI_IFSTATUS_LCA (1<<21) /* Local CPU abort */
+#define BPCI_IFSTATUS_MEM (1<<22) /* Memory prot. violation */
+#define BPCI_IFSTATUS_ARB (1<<23) /* Arbiter timed out */
+#define BPCI_IFSTATUS_STA (1<<27) /* Signaled target abort */
+#define BPCI_IFSTATUS_TA (1<<28) /* Target abort */
+#define BPCI_IFSTATUS_MA (1<<29) /* Master abort */
+#define BPCI_IFSTATUS_PEI (1<<30) /* Parity error as initiator */
+#define BPCI_IFSTATUS_PET (1<<31) /* Parity error as target */
+
+#define BPCI_RESETCTL_PR (1<<0) /* True if reset asserted */
+#define BPCI_RESETCTL_RT (1<<4) /* Release time */
+#define BPCI_RESETCTL_CT (1<<8) /* Config time */
+#define BPCI_RESETCTL_PE (1<<12) /* PCI enabled */
+#define BPCI_RESETCTL_HM (1<<13) /* PCI host mode */
+#define BPCI_RESETCTL_RI (1<<14) /* PCI reset in */
+
+extern mspPciRegs msp_pci_regs __attribute__((section(".register")));
+extern unsigned long msp_pci_config_space
+ __attribute__((section(".register")));
+
+#define MSP_PCI_READ_REG32(base, byte_offset) \
+ *((volatile u32 *)((u8 *)(base) + (byte_offset)))
+
+#endif /* !_MSP_PCI_H_ */
