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https://github.com/torvalds/linux
synced 2024-10-27 13:48:49 +00:00
32e31de5c3
It is not necessary to hold the firmware memory during the whole driver lifetime, and obviously it does waste memory. Suppose there are 4 ath9k-htc usb dongles working, kernel has to consume about 4*50KBytes RAM to cache firmware for all dongles. After applying the patch, kernel only caches one single firmware image in RAM for all ath9k-htc devices just during system suspend/resume cycle. When system is ready for loading firmware, ath9k-htc can request the loading from usersapce. During system resume, ath9k-htc still can load the firmware which was cached in kernel memory before system suspend. Cc: ath9k-devel@lists.ath9k.org Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com> Cc: Jouni Malinen <jouni@qca.qualcomm.com> Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Cc: "John W. Linville" <linville@tuxdriver.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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* Copyright (c) 2010-2011 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef HTC_USB_H
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#define HTC_USB_H
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#define MAJOR_VERSION_REQ 1
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#define MINOR_VERSION_REQ 3
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#define IS_AR7010_DEVICE(_v) (((_v) == AR9280_USB) || ((_v) == AR9287_USB))
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#define AR9271_FIRMWARE 0x501000
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#define AR9271_FIRMWARE_TEXT 0x903000
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#define AR7010_FIRMWARE_TEXT 0x906000
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#define FIRMWARE_DOWNLOAD 0x30
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#define FIRMWARE_DOWNLOAD_COMP 0x31
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#define ATH_USB_RX_STREAM_MODE_TAG 0x4e00
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#define ATH_USB_TX_STREAM_MODE_TAG 0x697e
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/* FIXME: Verify these numbers (with Windows) */
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#define MAX_TX_URB_NUM 8
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#define MAX_TX_BUF_NUM 256
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#define MAX_TX_BUF_SIZE 32768
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#define MAX_TX_AGGR_NUM 20
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#define MAX_RX_URB_NUM 8
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#define MAX_RX_BUF_SIZE 16384
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#define MAX_PKT_NUM_IN_TRANSFER 10
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#define MAX_REG_OUT_URB_NUM 1
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#define MAX_REG_IN_URB_NUM 64
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#define MAX_REG_IN_BUF_SIZE 64
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/* USB Endpoint definition */
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#define USB_WLAN_TX_PIPE 1
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#define USB_WLAN_RX_PIPE 2
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#define USB_REG_IN_PIPE 3
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#define USB_REG_OUT_PIPE 4
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#define HIF_USB_MAX_RXPIPES 2
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#define HIF_USB_MAX_TXPIPES 4
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struct tx_buf {
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u8 *buf;
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u16 len;
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u16 offset;
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struct urb *urb;
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struct sk_buff_head skb_queue;
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struct hif_device_usb *hif_dev;
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struct list_head list;
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};
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#define HIF_USB_TX_STOP BIT(0)
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#define HIF_USB_TX_FLUSH BIT(1)
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struct hif_usb_tx {
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u8 flags;
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u8 tx_buf_cnt;
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u16 tx_skb_cnt;
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struct sk_buff_head tx_skb_queue;
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struct list_head tx_buf;
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struct list_head tx_pending;
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spinlock_t tx_lock;
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};
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struct cmd_buf {
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struct sk_buff *skb;
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struct hif_device_usb *hif_dev;
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};
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#define HIF_USB_START BIT(0)
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#define HIF_USB_READY BIT(1)
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struct hif_device_usb {
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struct usb_device *udev;
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struct usb_interface *interface;
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const struct usb_device_id *usb_device_id;
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const void *fw_data;
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size_t fw_size;
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struct completion fw_done;
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struct htc_target *htc_handle;
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struct hif_usb_tx tx;
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struct usb_anchor regout_submitted;
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struct usb_anchor rx_submitted;
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struct usb_anchor reg_in_submitted;
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struct usb_anchor mgmt_submitted;
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struct sk_buff *remain_skb;
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const char *fw_name;
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int rx_remain_len;
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int rx_pkt_len;
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int rx_transfer_len;
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int rx_pad_len;
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spinlock_t rx_lock;
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u8 flags; /* HIF_USB_* */
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};
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int ath9k_hif_usb_init(void);
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void ath9k_hif_usb_exit(void);
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#endif /* HTC_USB_H */
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