| /* |
| * Copyright (c) 2004-2011 Atheros Communications 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. |
| */ |
| |
| #ifndef HIF_H |
| #define HIF_H |
| |
| #include "common.h" |
| #include "core.h" |
| |
| #include <linux/scatterlist.h> |
| |
| #define BUS_REQUEST_MAX_NUM 64 |
| #define HIF_MBOX_BLOCK_SIZE 128 |
| #define HIF_MBOX0_BLOCK_SIZE 1 |
| |
| #define HIF_DMA_BUFFER_SIZE (32 * 1024) |
| #define CMD53_FIXED_ADDRESS 1 |
| #define CMD53_INCR_ADDRESS 2 |
| |
| #define MAX_SCATTER_REQUESTS 4 |
| #define MAX_SCATTER_ENTRIES_PER_REQ 16 |
| #define MAX_SCATTER_REQ_TRANSFER_SIZE (32 * 1024) |
| |
| #define MANUFACTURER_ID_AR6003_BASE 0x300 |
| /* SDIO manufacturer ID and Codes */ |
| #define MANUFACTURER_ID_ATH6KL_BASE_MASK 0xFF00 |
| #define MANUFACTURER_CODE 0x271 /* Atheros */ |
| |
| /* Mailbox address in SDIO address space */ |
| #define HIF_MBOX_BASE_ADDR 0x800 |
| #define HIF_MBOX_WIDTH 0x800 |
| |
| #define HIF_MBOX_END_ADDR (HTC_MAILBOX_NUM_MAX * HIF_MBOX_WIDTH - 1) |
| |
| /* version 1 of the chip has only a 12K extended mbox range */ |
| #define HIF_MBOX0_EXT_BASE_ADDR 0x4000 |
| #define HIF_MBOX0_EXT_WIDTH (12*1024) |
| |
| /* GMBOX addresses */ |
| #define HIF_GMBOX_BASE_ADDR 0x7000 |
| #define HIF_GMBOX_WIDTH 0x4000 |
| |
| /* interrupt mode register */ |
| #define CCCR_SDIO_IRQ_MODE_REG 0xF0 |
| |
| /* mode to enable special 4-bit interrupt assertion without clock */ |
| #define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ (1 << 0) |
| |
| struct bus_request { |
| struct list_head list; |
| |
| /* request data */ |
| u32 address; |
| |
| u8 *buffer; |
| u32 length; |
| u32 request; |
| struct htc_packet *packet; |
| int status; |
| |
| /* this is a scatter request */ |
| struct hif_scatter_req *scat_req; |
| }; |
| |
| /* direction of transfer (read/write) */ |
| #define HIF_READ 0x00000001 |
| #define HIF_WRITE 0x00000002 |
| #define HIF_DIR_MASK (HIF_READ | HIF_WRITE) |
| |
| /* |
| * emode - This indicates the whether the command is to be executed in a |
| * blocking or non-blocking fashion (HIF_SYNCHRONOUS/ |
| * HIF_ASYNCHRONOUS). The read/write data paths in HTC have been |
| * implemented using the asynchronous mode allowing the the bus |
| * driver to indicate the completion of operation through the |
| * registered callback routine. The requirement primarily comes |
| * from the contexts these operations get called from (a driver's |
| * transmit context or the ISR context in case of receive). |
| * Support for both of these modes is essential. |
| */ |
| #define HIF_SYNCHRONOUS 0x00000010 |
| #define HIF_ASYNCHRONOUS 0x00000020 |
| #define HIF_EMODE_MASK (HIF_SYNCHRONOUS | HIF_ASYNCHRONOUS) |
| |
| /* |
| * dmode - An interface may support different kinds of commands based on |
| * the tradeoff between the amount of data it can carry and the |
| * setup time. Byte and Block modes are supported (HIF_BYTE_BASIS/ |
| * HIF_BLOCK_BASIS). In case of latter, the data is rounded off |
| * to the nearest block size by padding. The size of the block is |
| * configurable at compile time using the HIF_BLOCK_SIZE and is |
| * negotiated with the target during initialization after the |
| * ATH6KL interrupts are enabled. |
| */ |
| #define HIF_BYTE_BASIS 0x00000040 |
| #define HIF_BLOCK_BASIS 0x00000080 |
| #define HIF_DMODE_MASK (HIF_BYTE_BASIS | HIF_BLOCK_BASIS) |
| |
| /* |
| * amode - This indicates if the address has to be incremented on ATH6KL |
| * after every read/write operation (HIF?FIXED_ADDRESS/ |
| * HIF_INCREMENTAL_ADDRESS). |
| */ |
| #define HIF_FIXED_ADDRESS 0x00000100 |
| #define HIF_INCREMENTAL_ADDRESS 0x00000200 |
| #define HIF_AMODE_MASK (HIF_FIXED_ADDRESS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_WR_ASYNC_BYTE_INC \ |
| (HIF_WRITE | HIF_ASYNCHRONOUS | \ |
| HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_WR_ASYNC_BLOCK_INC \ |
| (HIF_WRITE | HIF_ASYNCHRONOUS | \ |
| HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_WR_SYNC_BYTE_FIX \ |
| (HIF_WRITE | HIF_SYNCHRONOUS | \ |
| HIF_BYTE_BASIS | HIF_FIXED_ADDRESS) |
| |
| #define HIF_WR_SYNC_BYTE_INC \ |
| (HIF_WRITE | HIF_SYNCHRONOUS | \ |
| HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_WR_SYNC_BLOCK_INC \ |
| (HIF_WRITE | HIF_SYNCHRONOUS | \ |
| HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_RD_SYNC_BYTE_INC \ |
| (HIF_READ | HIF_SYNCHRONOUS | \ |
| HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) |
| |
| #define HIF_RD_SYNC_BYTE_FIX \ |
| (HIF_READ | HIF_SYNCHRONOUS | \ |
| HIF_BYTE_BASIS | HIF_FIXED_ADDRESS) |
| |
| #define HIF_RD_ASYNC_BLOCK_FIX \ |
| (HIF_READ | HIF_ASYNCHRONOUS | \ |
| HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS) |
| |
| #define HIF_RD_SYNC_BLOCK_FIX \ |
| (HIF_READ | HIF_SYNCHRONOUS | \ |
| HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS) |
| |
| struct hif_scatter_item { |
| u8 *buf; |
| int len; |
| struct htc_packet *packet; |
| }; |
| |
| struct hif_scatter_req { |
| struct list_head list; |
| /* address for the read/write operation */ |
| u32 addr; |
| |
| /* request flags */ |
| u32 req; |
| |
| /* total length of entire transfer */ |
| u32 len; |
| |
| u32 flags; |
| void (*complete) (struct hif_scatter_req *); |
| int status; |
| struct htc_endpoint *ep; |
| int scat_entries; |
| |
| struct hif_scatter_req_priv *req_priv; |
| |
| /* bounce buffer for upper layers to copy to/from */ |
| u8 *virt_dma_buf; |
| |
| struct hif_scatter_item scat_list[1]; |
| }; |
| |
| struct hif_dev_scat_sup_info { |
| int max_scat_entries; |
| int max_xfer_szper_scatreq; |
| }; |
| |
| struct hif_scatter_req_priv { |
| struct bus_request *busrequest; |
| struct scatterlist sgentries[MAX_SCATTER_ENTRIES_PER_REQ]; |
| }; |
| |
| struct ath6kl_hif_ops { |
| int (*read_write_sync)(struct ath6kl *ar, u32 addr, u8 *buf, |
| u32 len, u32 request); |
| int (*write_async)(struct ath6kl *ar, u32 address, u8 *buffer, |
| u32 length, u32 request, struct htc_packet *packet); |
| |
| void (*irq_enable)(struct ath6kl *ar); |
| void (*irq_disable)(struct ath6kl *ar); |
| |
| struct hif_scatter_req *(*scatter_req_get)(struct ath6kl *ar); |
| void (*scatter_req_add)(struct ath6kl *ar, |
| struct hif_scatter_req *s_req); |
| int (*enable_scatter)(struct ath6kl *ar, |
| struct hif_dev_scat_sup_info *info); |
| int (*scat_req_rw) (struct ath6kl *ar, |
| struct hif_scatter_req *scat_req); |
| void (*cleanup_scatter)(struct ath6kl *ar); |
| }; |
| |
| #endif |