--- /dev/null
+/*
+ * 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.
+ */
+
+#include <linux/uaccess.h>
+
+#include "wil6210.h"
+#include <uapi/linux/wil6210_uapi.h>
+
+#define wil_hex_dump_ioctl(prefix_str, buf, len) \
+ print_hex_dump_debug("DBG[IOC ]" prefix_str, \
+ DUMP_PREFIX_OFFSET, 16, 1, buf, len, true)
+#define wil_dbg_ioctl(wil, fmt, arg...) wil_dbg(wil, "DBG[IOC ]" fmt, ##arg)
+
+static void __iomem *wil_ioc_addr(struct wil6210_priv *wil, uint32_t addr,
+ uint32_t size, enum wil_memio_op op)
+{
+ void __iomem *a;
+ u32 off;
+
+ switch (op & wil_mmio_addr_mask) {
+ case wil_mmio_addr_linker:
+ a = wmi_buffer(wil, cpu_to_le32(addr));
+ break;
+ case wil_mmio_addr_ahb:
+ a = wmi_addr(wil, addr);
+ break;
+ case wil_mmio_addr_bar:
+ a = wmi_addr(wil, addr + WIL6210_FW_HOST_OFF);
+ break;
+ default:
+ wil_err(wil, "Unsupported address mode, op = 0x%08x\n", op);
+ return NULL;
+ }
+
+ off = a - wil->csr;
+ if (size >= WIL6210_MEM_SIZE - off) {
+ wil_err(wil, "Requested block does not fit into memory: "
+ "off = 0x%08x size = 0x%08x\n", off, size);
+ return NULL;
+ }
+
+ return a;
+}
+
+static int wil_ioc_memio_dword(struct wil6210_priv *wil, void __user *data)
+{
+ struct wil_memio io;
+ void __iomem *a;
+ bool need_copy = false;
+
+ if (copy_from_user(&io, data, sizeof(io)))
+ return -EFAULT;
+
+ wil_dbg_ioctl(wil, "IO: addr = 0x%08x val = 0x%08x op = 0x%08x\n",
+ io.addr, io.val, io.op);
+
+ a = wil_ioc_addr(wil, io.addr, sizeof(u32), io.op);
+ if (!a) {
+ wil_err(wil, "invalid address 0x%08x, op = 0x%08x\n", io.addr,
+ io.op);
+ return -EINVAL;
+ }
+ /* operation */
+ switch (io.op & wil_mmio_op_mask) {
+ case wil_mmio_read:
+ io.val = ioread32(a);
+ need_copy = true;
+ break;
+ case wil_mmio_write:
+ iowrite32(io.val, a);
+ wmb(); /* make sure write propagated to HW */
+ break;
+ default:
+ wil_err(wil, "Unsupported operation, op = 0x%08x\n", io.op);
+ return -EINVAL;
+ }
+
+ if (need_copy) {
+ wil_dbg_ioctl(wil, "IO done: addr = 0x%08x"
+ " val = 0x%08x op = 0x%08x\n",
+ io.addr, io.val, io.op);
+ if (copy_to_user(data, &io, sizeof(io)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int wil_ioc_memio_block(struct wil6210_priv *wil, void __user *data)
+{
+ struct wil_memio_block io;
+ void *block;
+ void __iomem *a;
+ int rc = 0;
+
+ if (copy_from_user(&io, data, sizeof(io)))
+ return -EFAULT;
+
+ wil_dbg_ioctl(wil, "IO: addr = 0x%08x size = 0x%08x op = 0x%08x\n",
+ io.addr, io.size, io.op);
+
+ /* size */
+ if (io.size % 4) {
+ wil_err(wil, "size is not multiple of 4: 0x%08x\n", io.size);
+ return -EINVAL;
+ }
+
+ a = wil_ioc_addr(wil, io.addr, io.size, io.op);
+ if (!a) {
+ wil_err(wil, "invalid address 0x%08x, op = 0x%08x\n", io.addr,
+ io.op);
+ return -EINVAL;
+ }
+
+ block = kmalloc(io.size, GFP_USER);
+ if (!block)
+ return -ENOMEM;
+
+ /* operation */
+ switch (io.op & wil_mmio_op_mask) {
+ case wil_mmio_read:
+ wil_memcpy_fromio_32(block, a, io.size);
+ wil_hex_dump_ioctl("Read ", block, io.size);
+ if (copy_to_user(io.block, block, io.size)) {
+ rc = -EFAULT;
+ goto out_free;
+ }
+ break;
+ case wil_mmio_write:
+ if (copy_from_user(block, io.block, io.size)) {
+ rc = -EFAULT;
+ goto out_free;
+ }
+ wil_memcpy_toio_32(a, block, io.size);
+ wmb(); /* make sure write propagated to HW */
+ wil_hex_dump_ioctl("Write ", block, io.size);
+ break;
+ default:
+ wil_err(wil, "Unsupported operation, op = 0x%08x\n", io.op);
+ rc = -EINVAL;
+ break;
+ }
+
+out_free:
+ kfree(block);
+ return rc;
+}
+
+int wil_ioctl(struct wil6210_priv *wil, void __user *data, int cmd)
+{
+ switch (cmd) {
+ case WIL_IOCTL_MEMIO:
+ return wil_ioc_memio_dword(wil, data);
+ case WIL_IOCTL_MEMIO_BLOCK:
+ return wil_ioc_memio_block(wil, data);
+ default:
+ wil_dbg_ioctl(wil, "Unsupported IOCTL 0x%04x\n", cmd);
+ return -ENOIOCTLCMD;
+ }
+}
Code Review / kvmfornfv.git / blobdiff