iwlwifi: split the drivers for agn and legacy devices 3945/4965

Intel WiFi devices 3945 and 4965 now have their own driver in the folder

	drivers/net/wireless/iwlegacy

Add support to build these drivers independently of the driver for
AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko,
and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko
contains code shared between both devices.

The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3
ABGN device.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/iwl-3945-fh.h b/drivers/net/wireless/iwlegacy/iwl-3945-fh.h
new file mode 100644
index 00000000000..836c9919f82
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/iwl-3945-fh.h
@@ -0,0 +1,187 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License 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,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#ifndef __iwl_3945_fh_h__
+#define __iwl_3945_fh_h__
+
+/************************************/
+/* iwl3945 Flow Handler Definitions */
+/************************************/
+
+/**
+ * This I/O area is directly read/writable by driver (e.g. Linux uses writel())
+ * Addresses are offsets from device's PCI hardware base address.
+ */
+#define FH39_MEM_LOWER_BOUND                   (0x0800)
+#define FH39_MEM_UPPER_BOUND                   (0x1000)
+
+#define FH39_CBCC_TABLE		(FH39_MEM_LOWER_BOUND + 0x140)
+#define FH39_TFDB_TABLE		(FH39_MEM_LOWER_BOUND + 0x180)
+#define FH39_RCSR_TABLE		(FH39_MEM_LOWER_BOUND + 0x400)
+#define FH39_RSSR_TABLE		(FH39_MEM_LOWER_BOUND + 0x4c0)
+#define FH39_TCSR_TABLE		(FH39_MEM_LOWER_BOUND + 0x500)
+#define FH39_TSSR_TABLE		(FH39_MEM_LOWER_BOUND + 0x680)
+
+/* TFDB (Transmit Frame Buffer Descriptor) */
+#define FH39_TFDB(_ch, buf)			(FH39_TFDB_TABLE + \
+						 ((_ch) * 2 + (buf)) * 0x28)
+#define FH39_TFDB_CHNL_BUF_CTRL_REG(_ch)	(FH39_TFDB_TABLE + 0x50 * (_ch))
+
+/* CBCC channel is [0,2] */
+#define FH39_CBCC(_ch)		(FH39_CBCC_TABLE + (_ch) * 0x8)
+#define FH39_CBCC_CTRL(_ch)	(FH39_CBCC(_ch) + 0x00)
+#define FH39_CBCC_BASE(_ch)	(FH39_CBCC(_ch) + 0x04)
+
+/* RCSR channel is [0,2] */
+#define FH39_RCSR(_ch)			(FH39_RCSR_TABLE + (_ch) * 0x40)
+#define FH39_RCSR_CONFIG(_ch)		(FH39_RCSR(_ch) + 0x00)
+#define FH39_RCSR_RBD_BASE(_ch)		(FH39_RCSR(_ch) + 0x04)
+#define FH39_RCSR_WPTR(_ch)		(FH39_RCSR(_ch) + 0x20)
+#define FH39_RCSR_RPTR_ADDR(_ch)	(FH39_RCSR(_ch) + 0x24)
+
+#define FH39_RSCSR_CHNL0_WPTR		(FH39_RCSR_WPTR(0))
+
+/* RSSR */
+#define FH39_RSSR_CTRL			(FH39_RSSR_TABLE + 0x000)
+#define FH39_RSSR_STATUS		(FH39_RSSR_TABLE + 0x004)
+
+/* TCSR */
+#define FH39_TCSR(_ch)			(FH39_TCSR_TABLE + (_ch) * 0x20)
+#define FH39_TCSR_CONFIG(_ch)		(FH39_TCSR(_ch) + 0x00)
+#define FH39_TCSR_CREDIT(_ch)		(FH39_TCSR(_ch) + 0x04)
+#define FH39_TCSR_BUFF_STTS(_ch)	(FH39_TCSR(_ch) + 0x08)
+
+/* TSSR */
+#define FH39_TSSR_CBB_BASE        (FH39_TSSR_TABLE + 0x000)
+#define FH39_TSSR_MSG_CONFIG      (FH39_TSSR_TABLE + 0x008)
+#define FH39_TSSR_TX_STATUS       (FH39_TSSR_TABLE + 0x010)
+
+
+/* DBM */
+
+#define FH39_SRVC_CHNL                            (6)
+
+#define FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE     (20)
+#define FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH      (4)
+
+#define FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN    (0x08000000)
+
+#define FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE        (0x80000000)
+
+#define FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE           (0x20000000)
+
+#define FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128		(0x01000000)
+
+#define FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST		(0x00001000)
+
+#define FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH			(0x00000000)
+
+#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF		(0x00000000)
+#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRIVER		(0x00000001)
+
+#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE_VAL	(0x00000000)
+#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL	(0x00000008)
+
+#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD		(0x00200000)
+
+#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT		(0x00000000)
+
+#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE		(0x00000000)
+#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE		(0x80000000)
+
+#define FH39_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID		(0x00004000)
+
+#define FH39_TCSR_CHNL_TX_BUF_STS_REG_BIT_TFDB_WPTR		(0x00000001)
+
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON	(0xFF000000)
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON	(0x00FF0000)
+
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B	(0x00000400)
+
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON		(0x00000100)
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON		(0x00000080)
+
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH	(0x00000020)
+#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH		(0x00000005)
+
+#define FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch)	(BIT(_ch) << 24)
+#define FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch)	(BIT(_ch) << 16)
+
+#define FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_ch) \
+	(FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch) | \
+	 FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch))
+
+#define FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE			(0x01000000)
+
+struct iwl3945_tfd_tb {
+	__le32 addr;
+	__le32 len;
+} __packed;
+
+struct iwl3945_tfd {
+	__le32 control_flags;
+	struct iwl3945_tfd_tb tbs[4];
+	u8 __pad[28];
+} __packed;
+
+
+#endif /* __iwl_3945_fh_h__ */