Add support for AP1000 board.

Patch by James MacAulay, 07 Oct 2005

1 files changed, 346 insertions, 0 deletions

diff --git a/board/amirix/ap1000/pci.c b/board/amirix/ap1000/pci.c
new file mode 100644
index 0000000..34cd587
--- /dev/null
+++ b/board/amirix/ap1000/pci.c
@@ -0,0 +1,346 @@
+/*
+ * (C) Copyright 2003
+ * AMIRIX Systems Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+#include <pci.h>
+
+#define PCI_MEM_82559ER_CSR_BASE    0x30200000
+#define PCI_IO_82559ER_CSR_BASE     0x40000200
+
+/** AP1100 specific values */
+#define PSII_BASE                   0x30000000    /**< PowerSpan II dual bridge local bus register address */
+#define PSII_CONFIG_ADDR            0x30000290    /**< PowerSpan II Configuration Cycle Address configuration register */
+#define PSII_CONFIG_DATA            0x30000294    /**< PowerSpan II Configuration Cycle Data register. */
+#define PSII_CONFIG_DEST_PCI2       0x01000000    /**< PowerSpan II configuration cycle destination selection, set for PCI2 bus */
+#define PSII_PCI_MEM_BASE           0x30200000    /**< Local Bus address for start of PCI memory space on PCI2 bus. */
+#define PSII_PCI_MEM_SIZE           0x1BE00000    /**< PCI Memory space about 510 Meg. */
+#define AP1000_SYS_MEM_START        0x00000000    /**< System memory starts at 0. */
+#define AP1000_SYS_MEM_SIZE         0x08000000    /**< System memory is 128 Meg. */
+
+/* static int G_verbosity_level = 1; */
+#define G_verbosity_level 1
+
+void write1(unsigned long addr, unsigned char val) {
+    volatile unsigned char* p = (volatile unsigned char*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("write1: addr=%08x val=%02x\n", (unsigned int)addr, val);
+    *p = val;
+    asm("eieio");
+}
+
+unsigned char read1(unsigned long addr) {
+    unsigned char val;
+    volatile unsigned char* p = (volatile unsigned char*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("read1: addr=%08x ", (unsigned int)addr);
+    val = *p;
+    asm("eieio");
+    if(G_verbosity_level > 1)
+        printf("val=%08x\n", val);
+    return val;
+}
+
+void write2(unsigned long addr, unsigned short val) {
+    volatile unsigned short* p = (volatile unsigned short*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("write2: addr=%08x val=%04x -> *p=%04x\n", (unsigned int)addr, val,
+                ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8));
+
+    *p = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8);
+    asm("eieio");
+}
+
+unsigned short read2(unsigned long addr) {
+    unsigned short val;
+    volatile unsigned short* p = (volatile unsigned short*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("read2: addr=%08x ", (unsigned int)addr);
+    val = *p;
+    val = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8);
+    asm("eieio");
+    if(G_verbosity_level > 1)
+        printf("*p=%04x -> val=%04x\n",
+            ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8), val);
+    return val;
+}
+
+void write4(unsigned long addr, unsigned long val) {
+    volatile unsigned long* p = (volatile unsigned long*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("write4: addr=%08x val=%08x -> *p=%08x\n", (unsigned int)addr, (unsigned int)val,
+            (unsigned int)(((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) |
+            ((val & 0x00FF0000) >> 8)  | ((val & 0x0000FF00) << 8)));
+
+    *p = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) |
+         ((val & 0x00FF0000) >> 8)  | ((val & 0x0000FF00) << 8);
+    asm("eieio");
+}
+
+unsigned long read4(unsigned long addr) {
+    unsigned long val;
+    volatile unsigned long* p = (volatile unsigned long*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("read4: addr=%08x", (unsigned int)addr);
+
+    val = *p;
+    val = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) |
+          ((val & 0x00FF0000) >> 8)  | ((val & 0x0000FF00) << 8);
+    asm("eieio");
+
+    if(G_verbosity_level > 1)
+        printf("*p=%04x -> val=%04x\n",
+            (unsigned int)(((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) |
+            ((val & 0x00FF0000) >> 8)  | ((val & 0x0000FF00) << 8)), (unsigned int)val);
+    return val;
+}
+
+void write4be(unsigned long addr, unsigned long val) {
+    volatile unsigned long* p = (volatile unsigned long*)addr;
+
+    if(G_verbosity_level > 1)
+        printf("write4: addr=%08x val=%08x\n", (unsigned int)addr, (unsigned int)val);
+    *p = val;
+    asm("eieio");
+}
+
+/** One byte configuration write on PSII.
+ *  Currently fixes destination PCI bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Address of location for received byte.
+ *  @return Always Zero.
+ */
+static int psII_read_config_byte(
+                    struct    pci_controller *hose,
+                    pci_dev_t                dev,
+                    int                      reg,
+                    u8                       *val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    *val = read1(PSII_CONFIG_DATA+(reg&0x03));
+    return(0);
+}
+
+/** One byte configuration write on PSII.
+ *  Currently fixes destination bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Output byte.
+ *  @return Always Zero.
+ */
+static int psII_write_config_byte(
+                  struct    pci_controller    *hose,
+                  pci_dev_t                    dev,
+                  int                        reg,
+                  u8                        val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    write1(PSII_CONFIG_DATA+(reg&0x03),(unsigned char )val);
+
+    return(0);
+}
+
+/** One word (16 bit) configuration read on PSII.
+ *  Currently fixes destination PCI bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Address of location for received word.
+ *  @return Always Zero.
+ */
+static int psII_read_config_word(
+                    struct    pci_controller    *hose,
+                    pci_dev_t                dev,
+                    int                        reg,
+                    u16                        *val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    *val = read2(PSII_CONFIG_DATA+(reg&0x03));
+    return(0);
+}
+
+/** One word (16 bit) configuration write on PSII.
+ *  Currently fixes destination bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Output word.
+ *  @return Always Zero.
+ */
+static int psII_write_config_word(
+                  struct    pci_controller    *hose,
+                  pci_dev_t                    dev,
+                  int                        reg,
+                  u16                        val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    write2(PSII_CONFIG_DATA+(reg&0x03),(unsigned short )val);
+
+    return(0);
+}
+
+/** One DWord (32 bit) configuration read on PSII.
+ *  Currently fixes destination PCI bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Address of location for received byte.
+ *  @return Always Zero.
+ */
+static int psII_read_config_dword(
+                    struct    pci_controller    *hose,
+                    pci_dev_t                dev,
+                    int                        reg,
+                    u32                        *val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    *val = read4(PSII_CONFIG_DATA);
+    return(0);
+}
+
+/** One DWord (32 bit) configuration write on PSII.
+ *  Currently fixes destination bus to PCI2, onboard
+ *  pci.
+ *  @param    hose    PCI Host controller information. Ignored.
+ *  @param    dev        Encoded PCI device/Bus and Function value.
+ *  @param    reg        PCI Configuration register number.
+ *  @param    val        Output Dword.
+ *  @return Always Zero.
+ */
+static int psII_write_config_dword(
+                  struct    pci_controller    *hose,
+                  pci_dev_t                    dev,
+                  int                        reg,
+                  u32                        val)
+{
+    write4be(PSII_CONFIG_ADDR,
+            PSII_CONFIG_DEST_PCI2 |  /* Operate on PCI2 bus interface . */
+            (PCI_BUS(dev) << 16) |
+            (PCI_DEV(dev) << 11) |
+            (PCI_FUNC(dev) << 8) |
+            ((reg & 0xFF) & ~3));  /* Configuation cycle type 0 */
+
+    write4(PSII_CONFIG_DATA,(unsigned long)val);
+
+    return(0);
+}
+
+
+
+static struct pci_config_table    ap1000_config_table[] = {
+#ifdef CONFIG_AP1000
+    {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+    PCI_BUS(CFG_ETH_DEV_FN), PCI_DEV(CFG_ETH_DEV_FN), PCI_FUNC(CFG_ETH_DEV_FN),
+    pci_cfgfunc_config_device, 
+    {CFG_ETH_IOBASE, CFG_ETH_MEMBASE, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
+#endif
+    { }
+};
+
+
+static struct pci_controller psII_hose = {
+    config_table: ap1000_config_table,
+};
+
+void pci_init_board(void)
+{
+  struct pci_controller *hose = &psII_hose;
+
+  /*
+   * Register the hose
+   */
+  hose->first_busno = 0;
+  hose->last_busno = 0xff;
+
+
+  /* System memory space */
+  pci_set_region(hose->regions + 0,
+         AP1000_SYS_MEM_START, AP1000_SYS_MEM_START, AP1000_SYS_MEM_SIZE,
+         PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+  /* PCI Memory space */
+  pci_set_region(hose->regions + 1,
+         PSII_PCI_MEM_BASE, PSII_PCI_MEM_BASE, PSII_PCI_MEM_SIZE,
+         PCI_REGION_MEM);
+
+  /* No IO Memory space  - for now */
+
+  pci_set_ops(hose,
+          psII_read_config_byte,
+          psII_read_config_word,
+          psII_read_config_dword,
+          psII_write_config_byte,
+          psII_write_config_word,
+          psII_write_config_dword);
+
+  hose->region_count = 2;
+
+  pci_register_hose(hose);
+
+  hose->last_busno = pci_hose_scan(hose);
+}