[RFC V2 4/6] PCI: add draft lspci command

[Antony Pavlov]

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 commands/Kconfig  |    8 ++++++++
 commands/Makefile |    1 +
 commands/lspci.c  |   53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 62 insertions(+), 0 deletions(-)
 create mode 100644 commands/lspci.c

diff --git a/commands/Kconfig b/commands/Kconfig
index e332a85..2367014 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -516,6 +516,14 @@ config CMD_USB
 	help
 	  The usb command allows to rescan for USB devices.
 
+config CMD_LSPCI
+	bool
+	depends on PCI
+	prompt "lspci command"
+	default y
+	help
+	  The lspci command allows to list all PCI devices.
+
 endmenu
 
 endif
diff --git a/commands/Makefile b/commands/Makefile
index 31442b5..273acce 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -64,3 +64,4 @@ obj-$(CONFIG_CMD_OFTREE)	+= oftree.o
 obj-$(CONFIG_CMD_MAGICVAR)	+= magicvar.o
 obj-$(CONFIG_CMD_IOMEM)		+= iomem.o
 obj-$(CONFIG_CMD_LINUX_EXEC)	+= linux_exec.o
+obj-$(CONFIG_CMD_LSPCI)		+= lspci.o
diff --git a/commands/lspci.c b/commands/lspci.c
new file mode 100644
index 0000000..1460f39
--- /dev/null
+++ b/commands/lspci.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov at gmail.com>
+ *
+ * This file is part of barebox.
+ * 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <init.h>
+#include <linux/pci.h>
+
+#include <command.h>
+
+extern struct pci_bus *pci_root;
+
+static int do_lspci(struct command *cmdtp, int argc, char *argv[])
+{
+	struct pci_dev *dev;
+
+	if (!pci_present()) {
+		printf("no pci!\n");
+		return 1;
+	}
+
+	list_for_each_entry(dev, &pci_root->devices, bus_list) {
+		printf("%02x: %04x: %04x:%04x (rev %02x)\n",
+			      dev->devfn,
+			      (dev->class >> 8) & 0xffff,
+			      dev->vendor,
+			      dev->device,
+			      dev->revision);
+	}
+
+	return 0;
+}
+
+BAREBOX_CMD_START(lspci)
+	.cmd            = do_lspci,
+	.usage          = "Show PCI info",
+BAREBOX_CMD_END
-- 
1.7.8.3