uwb: add the driver to enumerate WHCI capabilities

This enumerates the capabilties of a WHCI device, adding a umc device for
each one.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/include/linux/uwb/whci.h b/include/linux/uwb/whci.h
new file mode 100644
index 000000000000..915ec23042d4
--- /dev/null
+++ b/include/linux/uwb/whci.h
@@ -0,0 +1,117 @@
+/*
+ * Wireless Host Controller Interface for Ultra-Wide-Band and Wireless USB
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ *
+ * References:
+ *   [WHCI] Wireless Host Controller Interface Specification for
+ *          Certified Wireless Universal Serial Bus, revision 0.95.
+ */
+#ifndef _LINUX_UWB_WHCI_H_
+#define _LINUX_UWB_WHCI_H_
+
+#include <linux/pci.h>
+
+/*
+ * UWB interface capability registers (offsets from UWBBASE)
+ *
+ * [WHCI] section 2.2
+ */
+#define UWBCAPINFO      0x00 /* == UWBCAPDATA(0) */
+#  define UWBCAPINFO_TO_N_CAPS(c)       (((c) >> 0)  & 0xFull)
+#define UWBCAPDATA(n)   (8*(n))
+#  define UWBCAPDATA_TO_VERSION(c)      (((c) >> 32) & 0xFFFFull)
+#  define UWBCAPDATA_TO_OFFSET(c)       (((c) >> 18) & 0x3FFFull)
+#  define UWBCAPDATA_TO_BAR(c)          (((c) >> 16) & 0x3ull)
+#  define UWBCAPDATA_TO_SIZE(c)         ((((c) >> 8) & 0xFFull) * sizeof(u32))
+#  define UWBCAPDATA_TO_CAP_ID(c)       (((c) >> 0)  & 0xFFull)
+
+/* Size of the WHCI capability data (including the RC capability) for
+   a device with n capabilities. */
+#define UWBCAPDATA_SIZE(n) (8 + 8*(n))
+
+
+/*
+ * URC registers (offsets from URCBASE)
+ *
+ * [WHCI] section 2.3
+ */
+#define URCCMD          0x00
+#  define URCCMD_RESET          (1 << 31)  /* UMC Hardware reset */
+#  define URCCMD_RS             (1 << 30)  /* Run/Stop */
+#  define URCCMD_EARV           (1 << 29)  /* Event Address Register Valid */
+#  define URCCMD_ACTIVE         (1 << 15)  /* Command is active */
+#  define URCCMD_IWR            (1 << 14)  /* Interrupt When Ready */
+#  define URCCMD_SIZE_MASK      0x00000fff /* Command size mask */
+#define URCSTS          0x04
+#  define URCSTS_EPS            (1 << 17)  /* Event Processing Status */
+#  define URCSTS_HALTED         (1 << 16)  /* RC halted */
+#  define URCSTS_HSE            (1 << 10)  /* Host System Error...fried */
+#  define URCSTS_ER             (1 <<  9)  /* Event Ready */
+#  define URCSTS_RCI            (1 <<  8)  /* Ready for Command Interrupt */
+#  define URCSTS_INT_MASK       0x00000700 /* URC interrupt sources */
+#  define URCSTS_ISI            0x000000ff /* Interrupt Source Identification */
+#define URCINTR         0x08
+#  define URCINTR_EN_ALL        0x000007ff /* Enable all interrupt sources */
+#define URCCMDADDR      0x10
+#define URCEVTADDR      0x18
+#  define URCEVTADDR_OFFSET_MASK 0xfff    /* Event pointer offset mask */
+
+
+/** Write 32 bit @value to little endian register at @addr */
+static inline
+void le_writel(u32 value, void __iomem *addr)
+{
+        iowrite32(value, addr);
+}
+
+
+/** Read from 32 bit little endian register at @addr */
+static inline
+u32 le_readl(void __iomem *addr)
+{
+        return ioread32(addr);
+}
+
+
+/** Write 64 bit @value to little endian register at @addr */
+static inline
+void le_writeq(u64 value, void __iomem *addr)
+{
+        iowrite32(value, addr);
+        iowrite32(value >> 32, addr + 4);
+}
+
+
+/** Read from 64 bit little endian register at @addr */
+static inline
+u64 le_readq(void __iomem *addr)
+{
+        u64 value;
+        value  = ioread32(addr);
+        value |= (u64)ioread32(addr + 4) << 32;
+        return value;
+}
+
+extern int whci_wait_for(struct device *dev, u32 __iomem *reg,
+                         u32 mask, u32 result,
+                         unsigned long max_ms,  const char *tag);
+
+#endif /* #ifndef _LINUX_UWB_WHCI_H_ */