new file mode 100644
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * 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 _DXE_H_
+#define _DXE_H_
+
+#include "wcn36xx.h"
+
+/*
+TX_LOW = DMA0
+TX_HIGH = DMA4
+RX_LOW = DMA1
+RX_HIGH = DMA3
+H2H_TEST_RX_TX = DMA2
+*/
+
+/* DXE registers */
+#define WCN36XX_DXE_MEM_BASE 0x03000000
+#define WCN36XX_DXE_MEM_REG 0x202000
+
+#define WCN36XX_DXE_CCU_INT 0xA0011
+#define WCN36XX_DXE_REG_CCU_INT 0x200b10
+
+/* TODO This must calculated properly but not hardcoded */
+#define WCN36XX_DXE_CTRL_TX_L 0x328a44
+#define WCN36XX_DXE_CTRL_TX_H 0x32ce44
+#define WCN36XX_DXE_CTRL_RX_L 0x12ad2f
+#define WCN36XX_DXE_CTRL_RX_H 0x12d12f
+#define WCN36XX_DXE_CTRL_TX_H_BD 0x30ce45
+#define WCN36XX_DXE_CTRL_TX_H_SKB 0x32ce4d
+#define WCN36XX_DXE_CTRL_TX_L_BD 0x308a45
+#define WCN36XX_DXE_CTRL_TX_L_SKB 0x328a4d
+
+/* TODO This must calculated properly but not hardcoded */
+#define WCN36XX_DXE_WQ_TX_L 0x17
+#define WCN36XX_DXE_WQ_TX_H 0x17
+#define WCN36XX_DXE_WQ_RX_L 0xB
+#define WCN36XX_DXE_WQ_RX_H 0x4
+
+/* DXE descriptor control filed */
+#define WCN36XX_DXE_CTRL_VALID_MASK (0x00000001)
+
+/* TODO This must calculated properly but not hardcoded */
+/* DXE default control register values */
+#define WCN36XX_DXE_CH_DEFAULT_CTL_RX_L 0x847EAD2F
+#define WCN36XX_DXE_CH_DEFAULT_CTL_RX_H 0x84FED12F
+#define WCN36XX_DXE_CH_DEFAULT_CTL_TX_H 0x853ECF4D
+#define WCN36XX_DXE_CH_DEFAULT_CTL_TX_L 0x843e8b4d
+
+/* Common DXE registers */
+#define WCN36XX_DXE_MEM_CSR (WCN36XX_DXE_MEM_REG + 0x00)
+#define WCN36XX_DXE_REG_CSR_RESET (WCN36XX_DXE_MEM_REG + 0x00)
+#define WCN36XX_DXE_ENCH_ADDR (WCN36XX_DXE_MEM_REG + 0x04)
+#define WCN36XX_DXE_REG_CH_EN (WCN36XX_DXE_MEM_REG + 0x08)
+#define WCN36XX_DXE_REG_CH_DONE (WCN36XX_DXE_MEM_REG + 0x0C)
+#define WCN36XX_DXE_REG_CH_ERR (WCN36XX_DXE_MEM_REG + 0x10)
+#define WCN36XX_DXE_INT_MASK_REG (WCN36XX_DXE_MEM_REG + 0x18)
+#define WCN36XX_DXE_INT_SRC_RAW_REG (WCN36XX_DXE_MEM_REG + 0x20)
+ /* #define WCN36XX_DXE_INT_CH6_MASK 0x00000040 */
+ /* #define WCN36XX_DXE_INT_CH5_MASK 0x00000020 */
+ #define WCN36XX_DXE_INT_CH4_MASK 0x00000010
+ #define WCN36XX_DXE_INT_CH3_MASK 0x00000008
+ /* #define WCN36XX_DXE_INT_CH2_MASK 0x00000004 */
+ #define WCN36XX_DXE_INT_CH1_MASK 0x00000002
+ #define WCN36XX_DXE_INT_CH0_MASK 0x00000001
+#define WCN36XX_DXE_0_INT_CLR (WCN36XX_DXE_MEM_REG + 0x30)
+#define WCN36XX_DXE_0_INT_ED_CLR (WCN36XX_DXE_MEM_REG + 0x34)
+#define WCN36XX_DXE_0_INT_DONE_CLR (WCN36XX_DXE_MEM_REG + 0x38)
+#define WCN36XX_DXE_0_INT_ERR_CLR (WCN36XX_DXE_MEM_REG + 0x3C)
+
+#define WCN36XX_DXE_0_CH0_STATUS (WCN36XX_DXE_MEM_REG + 0x404)
+#define WCN36XX_DXE_0_CH1_STATUS (WCN36XX_DXE_MEM_REG + 0x444)
+#define WCN36XX_DXE_0_CH2_STATUS (WCN36XX_DXE_MEM_REG + 0x484)
+#define WCN36XX_DXE_0_CH3_STATUS (WCN36XX_DXE_MEM_REG + 0x4C4)
+#define WCN36XX_DXE_0_CH4_STATUS (WCN36XX_DXE_MEM_REG + 0x504)
+
+#define WCN36XX_DXE_REG_RESET 0x5c89
+
+/* Temporary BMU Workqueue 4 */
+#define WCN36XX_DXE_BMU_WQ_RX_LOW 0xB
+#define WCN36XX_DXE_BMU_WQ_RX_HIGH 0x4
+/* DMA channel offset */
+#define WCN36XX_DXE_TX_LOW_OFFSET 0x400
+#define WCN36XX_DXE_TX_HIGH_OFFSET 0x500
+#define WCN36XX_DXE_RX_LOW_OFFSET 0x440
+#define WCN36XX_DXE_RX_HIGH_OFFSET 0x4C0
+
+/* Address of the next DXE descriptor */
+#define WCN36XX_DXE_CH_NEXT_DESC_ADDR 0x001C
+#define WCN36XX_DXE_CH_NEXT_DESC_ADDR_TX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_NEXT_DESC_ADDR)
+#define WCN36XX_DXE_CH_NEXT_DESC_ADDR_TX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_NEXT_DESC_ADDR)
+#define WCN36XX_DXE_CH_NEXT_DESC_ADDR_RX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_NEXT_DESC_ADDR)
+#define WCN36XX_DXE_CH_NEXT_DESC_ADDR_RX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_NEXT_DESC_ADDR)
+
+/* DXE Descriptor source address */
+#define WCN36XX_DXE_CH_SRC_ADDR 0x000C
+#define WCN36XX_DXE_CH_SRC_ADDR_RX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_SRC_ADDR)
+#define WCN36XX_DXE_CH_SRC_ADDR_RX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_SRC_ADDR)
+
+/* DXE Descriptor address destination address */
+#define WCN36XX_DXE_CH_DEST_ADDR 0x0014
+#define WCN36XX_DXE_CH_DEST_ADDR_TX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_DEST_ADDR)
+#define WCN36XX_DXE_CH_DEST_ADDR_TX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_DEST_ADDR)
+#define WCN36XX_DXE_CH_DEST_ADDR_RX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_DEST_ADDR)
+#define WCN36XX_DXE_CH_DEST_ADDR_RX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_DEST_ADDR)
+
+/* Interrupt status */
+#define WCN36XX_DXE_CH_STATUS_REG_ADDR 0x0004
+#define WCN36XX_DXE_CH_STATUS_REG_ADDR_TX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_STATUS_REG_ADDR)
+#define WCN36XX_DXE_CH_STATUS_REG_ADDR_TX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_STATUS_REG_ADDR)
+#define WCN36XX_DXE_CH_STATUS_REG_ADDR_RX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_LOW_OFFSET + \
+ WCN36XX_DXE_CH_STATUS_REG_ADDR)
+#define WCN36XX_DXE_CH_STATUS_REG_ADDR_RX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_HIGH_OFFSET + \
+ WCN36XX_DXE_CH_STATUS_REG_ADDR)
+
+
+/* DXE default control register */
+#define WCN36XX_DXE_REG_CTL_RX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_LOW_OFFSET)
+#define WCN36XX_DXE_REG_CTL_RX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_RX_HIGH_OFFSET)
+#define WCN36XX_DXE_REG_CTL_TX_H (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_HIGH_OFFSET)
+#define WCN36XX_DXE_REG_CTL_TX_L (WCN36XX_DXE_MEM_REG + \
+ WCN36XX_DXE_TX_LOW_OFFSET)
+
+#define WCN36XX_SMSM_WLAN_TX_ENABLE 0x00000400
+#define WCN36XX_SMSM_WLAN_TX_RINGS_EMPTY 0x00000200
+
+
+/* Interrupt control channel mask */
+#define WCN36XX_INT_MASK_CHAN_TX_L 0x00000001
+#define WCN36XX_INT_MASK_CHAN_RX_L 0x00000002
+#define WCN36XX_INT_MASK_CHAN_RX_H 0x00000008
+#define WCN36XX_INT_MASK_CHAN_TX_H 0x00000010
+
+#define WCN36XX_BD_CHUNK_SIZE 128
+
+#define WCN36XX_PKT_SIZE 0xF20
+enum wcn36xx_dxe_ch_type {
+ WCN36XX_DXE_CH_TX_L,
+ WCN36XX_DXE_CH_TX_H,
+ WCN36XX_DXE_CH_RX_L,
+ WCN36XX_DXE_CH_RX_H
+};
+
+/* amount of descriptors per channel */
+enum wcn36xx_dxe_ch_desc_num {
+ WCN36XX_DXE_CH_DESC_NUMB_TX_L = 128,
+ WCN36XX_DXE_CH_DESC_NUMB_TX_H = 10,
+ WCN36XX_DXE_CH_DESC_NUMB_RX_L = 512,
+ WCN36XX_DXE_CH_DESC_NUMB_RX_H = 40
+};
+
+/**
+ * struct wcn36xx_dxe_desc - describes descriptor of one DXE buffer
+ *
+ * @ctrl: is a union that consists of following bits:
+ * union {
+ * u32 valid :1; //0 = DMA stop, 1 = DMA continue with this
+ * //descriptor
+ * u32 transfer_type :2; //0 = Host to Host space
+ * u32 eop :1; //End of Packet
+ * u32 bd_handling :1; //if transferType = Host to BMU, then 0
+ * // means first 128 bytes contain BD, and 1
+ * // means create new empty BD
+ * u32 siq :1; // SIQ
+ * u32 diq :1; // DIQ
+ * u32 pdu_rel :1; //0 = don't release BD and PDUs when done,
+ * // 1 = release them
+ * u32 bthld_sel :4; //BMU Threshold Select
+ * u32 prio :3; //Specifies the priority level to use for
+ * // the transfer
+ * u32 stop_channel :1; //1 = DMA stops processing further, channel
+ * //requires re-enabling after this
+ * u32 intr :1; //Interrupt on Descriptor Done
+ * u32 rsvd :1; //reserved
+ * u32 size :14;//14 bits used - ignored for BMU transfers,
+ * //only used for host to host transfers?
+ * } ctrl;
+ */
+struct wcn36xx_dxe_desc {
+ u32 ctrl;
+ u32 fr_len;
+
+ u32 src_addr_l;
+ u32 dst_addr_l;
+ u32 phy_next_l;
+ u32 src_addr_h;
+ u32 dst_addr_h;
+ u32 phy_next_h;
+} __packed;
+
+/* DXE Control block */
+struct wcn36xx_dxe_ctl {
+ struct wcn36xx_dxe_ctl *next;
+ struct wcn36xx_dxe_desc *desc;
+ unsigned int desc_phy_addr;
+ int ctl_blk_order;
+ struct sk_buff *skb;
+ spinlock_t skb_lock;
+ void *bd_cpu_addr;
+ dma_addr_t bd_phy_addr;
+};
+
+struct wcn36xx_dxe_ch {
+ enum wcn36xx_dxe_ch_type ch_type;
+ void *cpu_addr;
+ dma_addr_t dma_addr;
+ enum wcn36xx_dxe_ch_desc_num desc_num;
+ /* DXE control block ring */
+ struct wcn36xx_dxe_ctl *head_blk_ctl;
+ struct wcn36xx_dxe_ctl *tail_blk_ctl;
+
+ /* DXE channel specific configs */
+ u32 dxe_wq;
+ u32 ctrl_bd;
+ u32 ctrl_skb;
+ u32 reg_ctrl;
+ u32 def_ctrl;
+};
+
+/* Memory Pool for BD headers */
+struct wcn36xx_dxe_mem_pool {
+ int chunk_size;
+ void *virt_addr;
+ dma_addr_t phy_addr;
+};
+int wcn36xx_dxe_allocate_mem_pools(struct wcn36xx *wcn);
+void wcn36xx_dxe_free_mem_pools(struct wcn36xx *wcn);
+void wcn36xx_dxe_rx_frame(struct wcn36xx *wcn);
+int wcn36xx_dxe_alloc_ctl_blks(struct wcn36xx *wcn);
+void wcn36xx_dxe_free_ctl_blks(struct wcn36xx *wcn);
+int wcn36xx_dxe_init(struct wcn36xx *wcn);
+void wcn36xx_dxe_deinit(struct wcn36xx *wcn);
+int wcn36xx_dxe_init_channels(struct wcn36xx *wcn);
+int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn,
+ struct sk_buff *skb,
+ bool is_low);
+void wcn36xx_dxe_tx_ack_ind(struct wcn36xx *wcn, u32 status);
+void *wcn36xx_dxe_get_next_bd(struct wcn36xx *wcn, bool is_low);
+#endif /* _DXE_H_ */
add dxe.h Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com> --- drivers/net/wireless/ath/wcn36xx/dxe.h | 281 +++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 drivers/net/wireless/ath/wcn36xx/dxe.h