Add PCI support to eNET board
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
diff --git a/board/eNET/Makefile b/board/eNET/Makefile
index bf5736a..588d21d 100644
--- a/board/eNET/Makefile
+++ b/board/eNET/Makefile
@@ -32,6 +32,7 @@
LIB = $(obj)lib$(BOARD).a
COBJS-y += eNET.o
+COBJS-$(CONFIG_PCI) += eNET_pci.o
SOBJS-y += eNET_start16.o
SOBJS-y += eNET_start.o
diff --git a/board/eNET/eNET_pci.c b/board/eNET/eNET_pci.c
new file mode 100644
index 0000000..e80a8fe
--- /dev/null
+++ b/board/eNET/eNET_pci.c
@@ -0,0 +1,95 @@
+/*
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
+ *
+ * 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 <pci.h>
+#include <asm/pci.h>
+#include <asm/ic/pci.h>
+
+static void pci_enet_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
+{
+ /* a configurable lists of IRQs to steal when we need one */
+ static int irq_list[] = {
+ CONFIG_SYS_FIRST_PCI_IRQ,
+ CONFIG_SYS_SECOND_PCI_IRQ,
+ CONFIG_SYS_THIRD_PCI_IRQ,
+ CONFIG_SYS_FORTH_PCI_IRQ
+ };
+ static int next_irq_index=0;
+
+ uchar tmp_pin;
+ int pin;
+
+ pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &tmp_pin);
+ pin = tmp_pin;
+
+ pin -= 1; /* PCI config space use 1-based numbering */
+ if (pin == -1) {
+ return; /* device use no irq */
+ }
+
+ /* map device number + pin to a pin on the sc520 */
+ switch (PCI_DEV(dev)) {
+ case 12: /* First Ethernet Chip */
+ pin += SC520_PCI_INTA;
+ break;
+
+ case 13: /* Second Ethernet Chip */
+ pin += SC520_PCI_INTB;
+ break;
+
+ default:
+ return;
+ }
+
+ pin &= 3; /* wrap around */
+
+ if (sc520_pci_ints[pin] == -1) {
+ /* re-route one interrupt for us */
+ if (next_irq_index > 3) {
+ return;
+ }
+ if (pci_sc520_set_irq(pin, irq_list[next_irq_index])) {
+ return;
+ }
+ next_irq_index++;
+ }
+
+ if (-1 != sc520_pci_ints[pin]) {
+ pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE,
+ sc520_pci_ints[pin]);
+ }
+ printf("fixup_irq: device %d pin %c irq %d\n",
+ PCI_DEV(dev), 'A' + pin, sc520_pci_ints[pin]);
+}
+
+static struct pci_controller enet_hose = {
+ fixup_irq: pci_enet_fixup_irq,
+};
+
+void pci_init_board(void)
+{
+ pci_sc520_init(&enet_hose);
+}
diff --git a/include/configs/eNET.h b/include/configs/eNET.h
index 4356714..243a554 100644
--- a/include/configs/eNET.h
+++ b/include/configs/eNET.h
@@ -86,6 +86,7 @@
#define CONFIG_CMD_MISC /* Misc functions like sleep etc*/
#undef CONFIG_CMD_NET /* bootp, tftpboot, rarpboot */
#undef CONFIG_CMD_NFS /* NFS support */
+#define CONFIG_CMD_PCI /* PCI support */
#define CONFIG_CMD_RUN /* run command in env variable */
#define CONFIG_CMD_SAVEENV /* saveenv */
#define CONFIG_CMD_SETGETDCR /* DCR support on 4xx */
@@ -200,13 +201,12 @@
/*-----------------------------------------------------------------------
* PCI configuration
*/
-#undef CONFIG_PCI /* include pci support */
-#undef CONFIG_PCI_PNP /* pci plug-and-play */
-#undef CONFIG_PCI_SCAN_SHOW
-#undef CONFIG_SYS_FIRST_PCI_IRQ
-#undef CONFIG_SYS_SECOND_PCI_IRQ
-#undef CONFIG_SYS_THIRD_PCI_IRQ
-#undef CONFIG_SYS_FORTH_PCI_IRQ
+#define CONFIG_PCI /* include pci support */
+#define CONFIG_PCI_PNP /* pci plug-and-play */
+#define CONFIG_SYS_FIRST_PCI_IRQ 10
+#define CONFIG_SYS_SECOND_PCI_IRQ 9
+#define CONFIG_SYS_THIRD_PCI_IRQ 11
+#define CONFIG_SYS_FORTH_PCI_IRQ 15
/*-----------------------------------------------------------------------
* Hardware watchdog configuration