[ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features

This patch adds drivers for IXP4xx hardware Queue Manager and for
Network Processor Engines. Requires patch #4712 (reading/writing
CPU feature (aka fuse) bits).

Posted to linux-arm-kernel on 2 Dec 2007 and revised.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 39 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h
new file mode 100644
index 00000000000..37d0511689d
--- /dev/null
+++ b/include/asm-arm/arch-ixp4xx/npe.h
@@ -0,0 +1,39 @@
+#ifndef __IXP4XX_NPE_H
+#define __IXP4XX_NPE_H
+
+#include <linux/kernel.h>
+
+extern const char *npe_names[];
+
+struct npe_regs {
+	u32 exec_addr, exec_data, exec_status_cmd, exec_count;
+	u32 action_points[4];
+	u32 watchpoint_fifo, watch_count;
+	u32 profile_count;
+	u32 messaging_status, messaging_control;
+	u32 mailbox_status, /*messaging_*/ in_out_fifo;
+};
+
+struct npe {
+	struct resource *mem_res;
+	struct npe_regs __iomem *regs;
+	u32 regs_phys;
+	int id;
+	int valid;
+};
+
+
+static inline const char *npe_name(struct npe *npe)
+{
+	return npe_names[npe->id];
+}
+
+int npe_running(struct npe *npe);
+int npe_send_message(struct npe *npe, const void *msg, const char *what);
+int npe_recv_message(struct npe *npe, void *msg, const char *what);
+int npe_send_recv_message(struct npe *npe, void *msg, const char *what);
+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev);
+struct npe *npe_request(int id);
+void npe_release(struct npe *npe);
+
+#endif /* __IXP4XX_NPE_H */