wil6210: atomic I/O for the card memory

Introduce netdev IOCTLs, to be used by the debug tools.

Allows to read/write single dword value or
memory block, aligned to dword
Different address modes supported:
- BAR offset
- Firmware "linker" address
- target's AHB bus

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/include/uapi/linux/wil6210_uapi.h b/include/uapi/linux/wil6210_uapi.h
new file mode 100644
index 000000000000..6a3cddd156c4
--- /dev/null
+++ b/include/uapi/linux/wil6210_uapi.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2014 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __WIL6210_UAPI_H__
+#define __WIL6210_UAPI_H__
+
+#if !defined(__KERNEL__)
+#define __user
+#endif
+
+#include <linux/sockios.h>
+
+/* Numbers SIOCDEVPRIVATE and SIOCDEVPRIVATE + 1
+ * are used by Android devices to implement PNO (preferred network offload).
+ * Albeit it is temporary solution, use different numbers to avoid conflicts
+ */
+
+/**
+ * Perform 32-bit I/O operation to the card memory
+ *
+ * User code should arrange data in memory like this:
+ *
+ *      struct wil_memio io;
+ *      struct ifreq ifr = {
+ *              .ifr_data = &io,
+ *      };
+ */
+#define WIL_IOCTL_MEMIO (SIOCDEVPRIVATE + 2)
+
+/**
+ * Perform block I/O operation to the card memory
+ *
+ * User code should arrange data in memory like this:
+ *
+ *      void *buf;
+ *      struct wil_memio_block io = {
+ *              .block = buf,
+ *      };
+ *      struct ifreq ifr = {
+ *              .ifr_data = &io,
+ *      };
+ */
+#define WIL_IOCTL_MEMIO_BLOCK (SIOCDEVPRIVATE + 3)
+
+/**
+ * operation to perform
+ *
+ * @wil_mmio_op_mask - bits defining operation,
+ * @wil_mmio_addr_mask - bits defining addressing mode
+ */
+enum wil_memio_op {
+        wil_mmio_read = 0,
+        wil_mmio_write = 1,
+        wil_mmio_op_mask = 0xff,
+        wil_mmio_addr_linker = 0 << 8,
+        wil_mmio_addr_ahb = 1 << 8,
+        wil_mmio_addr_bar = 2 << 8,
+        wil_mmio_addr_mask = 0xff00,
+};
+
+struct wil_memio {
+        uint32_t op; /* enum wil_memio_op */
+        uint32_t addr; /* should be 32-bit aligned */
+        uint32_t val;
+};
+
+struct wil_memio_block {
+        uint32_t op; /* enum wil_memio_op */
+        uint32_t addr; /* should be 32-bit aligned */
+        uint32_t size; /* should be multiple of 4 */
+        void __user *block; /* block address */
+};
+
+#endif /* __WIL6210_UAPI_H__ */