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linux/drivers/net/wireless/ath/ath6kl/hif.h
Linus Torvalds cb8e59cc87 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 
Pull networking updates from David Miller:

 1) Allow setting bluetooth L2CAP modes via socket option, from Luiz
    Augusto von Dentz.

 2) Add GSO partial support to igc, from Sasha Neftin.

 3) Several cleanups and improvements to r8169 from Heiner Kallweit.

 4) Add IF_OPER_TESTING link state and use it when ethtool triggers a
    device self-test. From Andrew Lunn.

 5) Start moving away from custom driver versions, use the globally
    defined kernel version instead, from Leon Romanovsky.

 6) Support GRO vis gro_cells in DSA layer, from Alexander Lobakin.

 7) Allow hard IRQ deferral during NAPI, from Eric Dumazet.

 8) Add sriov and vf support to hinic, from Luo bin.

 9) Support Media Redundancy Protocol (MRP) in the bridging code, from
    Horatiu Vultur.

10) Support netmap in the nft_nat code, from Pablo Neira Ayuso.

11) Allow UDPv6 encapsulation of ESP in the ipsec code, from Sabrina
    Dubroca. Also add ipv6 support for espintcp.

12) Lots of ReST conversions of the networking documentation, from Mauro
    Carvalho Chehab.

13) Support configuration of ethtool rxnfc flows in bcmgenet driver,
    from Doug Berger.

14) Allow to dump cgroup id and filter by it in inet_diag code, from
    Dmitry Yakunin.

15) Add infrastructure to export netlink attribute policies to
    userspace, from Johannes Berg.

16) Several optimizations to sch_fq scheduler, from Eric Dumazet.

17) Fallback to the default qdisc if qdisc init fails because otherwise
    a packet scheduler init failure will make a device inoperative. From
    Jesper Dangaard Brouer.

18) Several RISCV bpf jit optimizations, from Luke Nelson.

19) Correct the return type of the ->ndo_start_xmit() method in several
    drivers, it's netdev_tx_t but many drivers were using
    'int'. From Yunjian Wang.

20) Add an ethtool interface for PHY master/slave config, from Oleksij
    Rempel.

21) Add BPF iterators, from Yonghang Song.

22) Add cable test infrastructure, including ethool interfaces, from
    Andrew Lunn. Marvell PHY driver is the first to support this
    facility.

23) Remove zero-length arrays all over, from Gustavo A. R. Silva.

24) Calculate and maintain an explicit frame size in XDP, from Jesper
    Dangaard Brouer.

25) Add CAP_BPF, from Alexei Starovoitov.

26) Support terse dumps in the packet scheduler, from Vlad Buslov.

27) Support XDP_TX bulking in dpaa2 driver, from Ioana Ciornei.

28) Add devm_register_netdev(), from Bartosz Golaszewski.

29) Minimize qdisc resets, from Cong Wang.

30) Get rid of kernel_getsockopt and kernel_setsockopt in order to
    eliminate set_fs/get_fs calls. From Christoph Hellwig.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2517 commits)
  selftests: net: ip_defrag: ignore EPERM
  net_failover: fixed rollback in net_failover_open()
  Revert "tipc: Fix potential tipc_aead refcnt leak in tipc_crypto_rcv"
  Revert "tipc: Fix potential tipc_node refcnt leak in tipc_rcv"
  vmxnet3: allow rx flow hash ops only when rss is enabled
  hinic: add set_channels ethtool_ops support
  selftests/bpf: Add a default $(CXX) value
  tools/bpf: Don't use $(COMPILE.c)
  bpf, selftests: Use bpf_probe_read_kernel
  s390/bpf: Use bcr 0,%0 as tail call nop filler
  s390/bpf: Maintain 8-byte stack alignment
  selftests/bpf: Fix verifier test
  selftests/bpf: Fix sample_cnt shared between two threads
  bpf, selftests: Adapt cls_redirect to call csum_level helper
  bpf: Add csum_level helper for fixing up csum levels
  bpf: Fix up bpf_skb_adjust_room helper's skb csum setting
  sfc: add missing annotation for efx_ef10_try_update_nic_stats_vf()
  crypto/chtls: IPv6 support for inline TLS
  Crypto/chcr: Fixes a coccinile check error
  Crypto/chcr: Fixes compilations warnings
  ...
2020-06-03 16:27:18 -07:00

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/*
* Copyright (c) 2004-2011 Atheros Communications Inc.
* Copyright (c) 2011 Qualcomm Atheros, 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)
/* 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)
/* HTC runs over mailbox 0 */
#define HTC_MAILBOX 0
#define ATH6KL_TARGET_DEBUG_INTR_MASK 0x01
/* FIXME: are these duplicates with MAX_SCATTER_ values in hif.h? */
#define ATH6KL_SCATTER_ENTRIES_PER_REQ 16
#define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER (16 * 1024)
#define ATH6KL_SCATTER_REQS 4
#define ATH6KL_HIF_COMMUNICATION_TIMEOUT 1000
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;
bool virt_scat;
void (*complete) (struct htc_target *, struct hif_scatter_req *);
int status;
int scat_entries;
struct bus_request *busrequest;
struct scatterlist *sgentries;
/* bounce buffer for upper layers to copy to/from */
u8 *virt_dma_buf;
u32 scat_q_depth;
struct hif_scatter_item scat_list[];
};
struct ath6kl_irq_proc_registers {
u8 host_int_status;
u8 cpu_int_status;
u8 error_int_status;
u8 counter_int_status;
u8 mbox_frame;
u8 rx_lkahd_valid;
u8 host_int_status2;
u8 gmbox_rx_avail;
__le32 rx_lkahd[2];
__le32 rx_gmbox_lkahd_alias[2];
} __packed;
struct ath6kl_irq_enable_reg {
u8 int_status_en;
u8 cpu_int_status_en;
u8 err_int_status_en;
u8 cntr_int_status_en;
} __packed;
struct ath6kl_device {
/* protects irq_proc_reg and irq_en_reg below */
spinlock_t lock;
struct ath6kl_irq_proc_registers irq_proc_reg;
struct ath6kl_irq_enable_reg irq_en_reg;
struct htc_target *htc_cnxt;
struct ath6kl *ar;
};
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);
int (*scat_req_rw) (struct ath6kl *ar,
struct hif_scatter_req *scat_req);
void (*cleanup_scatter)(struct ath6kl *ar);
int (*suspend)(struct ath6kl *ar, struct cfg80211_wowlan *wow);
int (*resume)(struct ath6kl *ar);
int (*diag_read32)(struct ath6kl *ar, u32 address, u32 *value);
int (*diag_write32)(struct ath6kl *ar, u32 address, __le32 value);
int (*bmi_read)(struct ath6kl *ar, u8 *buf, u32 len);
int (*bmi_write)(struct ath6kl *ar, u8 *buf, u32 len);
int (*power_on)(struct ath6kl *ar);
int (*power_off)(struct ath6kl *ar);
void (*stop)(struct ath6kl *ar);
int (*pipe_send)(struct ath6kl *ar, u8 pipe, struct sk_buff *hdr_buf,
struct sk_buff *buf);
void (*pipe_get_default)(struct ath6kl *ar, u8 *pipe_ul, u8 *pipe_dl);
int (*pipe_map_service)(struct ath6kl *ar, u16 service_id, u8 *pipe_ul,
u8 *pipe_dl);
u16 (*pipe_get_free_queue_number)(struct ath6kl *ar, u8 pipe);
};
int ath6kl_hif_setup(struct ath6kl_device *dev);
int ath6kl_hif_unmask_intrs(struct ath6kl_device *dev);
int ath6kl_hif_mask_intrs(struct ath6kl_device *dev);
int ath6kl_hif_poll_mboxmsg_rx(struct ath6kl_device *dev,
u32 *lk_ahd, int timeout);
int ath6kl_hif_rx_control(struct ath6kl_device *dev, bool enable_rx);
int ath6kl_hif_disable_intrs(struct ath6kl_device *dev);
int ath6kl_hif_rw_comp_handler(void *context, int status);
int ath6kl_hif_intr_bh_handler(struct ath6kl *ar);
/* Scatter Function and Definitions */
int ath6kl_hif_submit_scat_req(struct ath6kl_device *dev,
struct hif_scatter_req *scat_req, bool read);
#endif
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