mwifiex: add support for Marvell pcie8766 chipset

This patch supports 88W8766P chipset with a PCIe interface.

The corresponding firmware image file is located at:
"mrvl/pcie8766_uapsta.bin"

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Ramesh Radhakrishnan <rramesh@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 148 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/pcie.h b/drivers/net/wireless/mwifiex/pcie.h
new file mode 100644
index 000000000000..445ff21772e2
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/pcie.h
@@ -0,0 +1,148 @@
+/* @file mwifiex_pcie.h
+ *
+ * @brief This file contains definitions for PCI-E interface.
+ * driver.
+ *
+ * Copyright (C) 2011, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#ifndef	_MWIFIEX_PCIE_H
+#define	_MWIFIEX_PCIE_H
+
+#include    <linux/pci.h>
+#include    <linux/pcieport_if.h>
+#include    <linux/interrupt.h>
+
+#include    "main.h"
+
+#define PCIE8766_DEFAULT_FW_NAME "mrvl/pcie8766_uapsta.bin"
+
+/* Constants for Buffer Descriptor (BD) rings */
+#define MWIFIEX_MAX_TXRX_BD			0x20
+#define MWIFIEX_TXBD_MASK			0x3F
+#define MWIFIEX_RXBD_MASK			0x3F
+
+#define MWIFIEX_MAX_EVT_BD			0x04
+#define MWIFIEX_EVTBD_MASK			0x07
+
+/* PCIE INTERNAL REGISTERS */
+#define PCIE_SCRATCH_0_REG				0xC10
+#define PCIE_SCRATCH_1_REG				0xC14
+#define PCIE_CPU_INT_EVENT				0xC18
+#define PCIE_CPU_INT_STATUS				0xC1C
+#define PCIE_HOST_INT_STATUS				0xC30
+#define PCIE_HOST_INT_MASK				0xC34
+#define PCIE_HOST_INT_STATUS_MASK			0xC3C
+#define PCIE_SCRATCH_2_REG				0xC40
+#define PCIE_SCRATCH_3_REG				0xC44
+#define PCIE_SCRATCH_4_REG				0xCC0
+#define PCIE_SCRATCH_5_REG				0xCC4
+#define PCIE_SCRATCH_6_REG				0xCC8
+#define PCIE_SCRATCH_7_REG				0xCCC
+#define PCIE_SCRATCH_8_REG				0xCD0
+#define PCIE_SCRATCH_9_REG				0xCD4
+#define PCIE_SCRATCH_10_REG				0xCD8
+#define PCIE_SCRATCH_11_REG				0xCDC
+#define PCIE_SCRATCH_12_REG				0xCE0
+
+#define CPU_INTR_DNLD_RDY				BIT(0)
+#define CPU_INTR_DOOR_BELL				BIT(1)
+#define CPU_INTR_SLEEP_CFM_DONE			BIT(2)
+#define CPU_INTR_RESET					BIT(3)
+
+#define HOST_INTR_DNLD_DONE				BIT(0)
+#define HOST_INTR_UPLD_RDY				BIT(1)
+#define HOST_INTR_CMD_DONE				BIT(2)
+#define HOST_INTR_EVENT_RDY				BIT(3)
+#define HOST_INTR_MASK					(HOST_INTR_DNLD_DONE | \
+							 HOST_INTR_UPLD_RDY  | \
+							 HOST_INTR_CMD_DONE  | \
+							 HOST_INTR_EVENT_RDY)
+
+#define MWIFIEX_BD_FLAG_ROLLOVER_IND			BIT(7)
+#define MWIFIEX_BD_FLAG_FIRST_DESC			BIT(0)
+#define MWIFIEX_BD_FLAG_LAST_DESC			BIT(1)
+#define REG_CMD_ADDR_LO					PCIE_SCRATCH_0_REG
+#define REG_CMD_ADDR_HI					PCIE_SCRATCH_1_REG
+#define REG_CMD_SIZE					PCIE_SCRATCH_2_REG
+
+#define REG_CMDRSP_ADDR_LO				PCIE_SCRATCH_4_REG
+#define REG_CMDRSP_ADDR_HI				PCIE_SCRATCH_5_REG
+
+/* TX buffer description read pointer */
+#define REG_TXBD_RDPTR					PCIE_SCRATCH_6_REG
+/* TX buffer description write pointer */
+#define REG_TXBD_WRPTR					PCIE_SCRATCH_7_REG
+/* RX buffer description read pointer */
+#define REG_RXBD_RDPTR					PCIE_SCRATCH_8_REG
+/* RX buffer description write pointer */
+#define REG_RXBD_WRPTR					PCIE_SCRATCH_9_REG
+/* Event buffer description read pointer */
+#define REG_EVTBD_RDPTR					PCIE_SCRATCH_10_REG
+/* Event buffer description write pointer */
+#define REG_EVTBD_WRPTR					PCIE_SCRATCH_11_REG
+/* Driver ready signature write pointer */
+#define REG_DRV_READY					PCIE_SCRATCH_12_REG
+
+/* Max retry number of command write */
+#define MAX_WRITE_IOMEM_RETRY				2
+/* Define PCIE block size for firmware download */
+#define MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD		256
+/* FW awake cookie after FW ready */
+#define FW_AWAKE_COOKIE						(0xAA55AA55)
+
+struct mwifiex_pcie_buf_desc {
+	u64 paddr;
+	u16 len;
+	u16 flags;
+} __packed;
+
+struct pcie_service_card {
+	struct pci_dev *dev;
+	struct mwifiex_adapter *adapter;
+
+	u32 txbd_wrptr;
+	u32 txbd_rdptr;
+	u32 txbd_ring_size;
+	u8 *txbd_ring_vbase;
+	phys_addr_t txbd_ring_pbase;
+	struct mwifiex_pcie_buf_desc *txbd_ring[MWIFIEX_MAX_TXRX_BD];
+	struct sk_buff *tx_buf_list[MWIFIEX_MAX_TXRX_BD];
+
+	u32 rxbd_wrptr;
+	u32 rxbd_rdptr;
+	u32 rxbd_ring_size;
+	u8 *rxbd_ring_vbase;
+	phys_addr_t rxbd_ring_pbase;
+	struct mwifiex_pcie_buf_desc *rxbd_ring[MWIFIEX_MAX_TXRX_BD];
+	struct sk_buff *rx_buf_list[MWIFIEX_MAX_TXRX_BD];
+
+	u32 evtbd_wrptr;
+	u32 evtbd_rdptr;
+	u32 evtbd_ring_size;
+	u8 *evtbd_ring_vbase;
+	phys_addr_t evtbd_ring_pbase;
+	struct mwifiex_pcie_buf_desc *evtbd_ring[MWIFIEX_MAX_EVT_BD];
+	struct sk_buff *evt_buf_list[MWIFIEX_MAX_EVT_BD];
+
+	struct sk_buff *cmd_buf;
+	struct sk_buff *cmdrsp_buf;
+	struct sk_buff *sleep_cookie;
+	void __iomem *pci_mmap;
+	void __iomem *pci_mmap1;
+};
+
+#endif /* _MWIFIEX_PCIE_H */