mirror of https://gitee.com/openkylin/linux.git
220 lines
7.1 KiB
C
220 lines
7.1 KiB
C
/*
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* Copyright (C) 2002 Intersil Americas Inc.
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* Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
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* Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>
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* Copyright (C) 2003 Aurelien Alleaume <slts@free.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _ISLPCI_DEV_H
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#define _ISLPCI_DEV_H
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#include <linux/netdevice.h>
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#include <linux/wireless.h>
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#include <net/iw_handler.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include "isl_38xx.h"
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#include "isl_oid.h"
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#include "islpci_mgt.h"
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/* some states might not be superflous and may be removed when
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design is finalized (hvr) */
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typedef enum {
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PRV_STATE_OFF = 0, /* this means hw_unavailable is != 0 */
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PRV_STATE_PREBOOT, /* we are in a pre-boot state (empty RAM) */
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PRV_STATE_BOOT, /* boot state (fw upload, run fw) */
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PRV_STATE_POSTBOOT, /* after boot state, need reset now */
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PRV_STATE_PREINIT, /* pre-init state */
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PRV_STATE_INIT, /* init state (restore MIB backup to device) */
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PRV_STATE_READY, /* driver&device are in operational state */
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PRV_STATE_SLEEP /* device in sleep mode */
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} islpci_state_t;
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/* ACL using MAC address */
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struct mac_entry {
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struct list_head _list;
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char addr[ETH_ALEN];
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};
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struct islpci_acl {
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enum { MAC_POLICY_OPEN=0, MAC_POLICY_ACCEPT=1, MAC_POLICY_REJECT=2 } policy;
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struct list_head mac_list; /* a list of mac_entry */
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int size; /* size of queue */
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struct semaphore sem; /* accessed in ioctls and trap_work */
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};
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struct islpci_membuf {
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int size; /* size of memory */
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void *mem; /* address of memory as seen by CPU */
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dma_addr_t pci_addr; /* address of memory as seen by device */
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};
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#define MAX_BSS_WPA_IE_COUNT 64
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#define MAX_WPA_IE_LEN 64
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struct islpci_bss_wpa_ie {
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struct list_head list;
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unsigned long last_update;
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u8 bssid[ETH_ALEN];
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u8 wpa_ie[MAX_WPA_IE_LEN];
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size_t wpa_ie_len;
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};
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typedef struct {
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spinlock_t slock; /* generic spinlock; */
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u32 priv_oid;
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/* our mib cache */
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u32 iw_mode;
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struct rw_semaphore mib_sem;
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void **mib;
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char nickname[IW_ESSID_MAX_SIZE+1];
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/* Take care of the wireless stats */
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struct work_struct stats_work;
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struct semaphore stats_sem;
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/* remember when we last updated the stats */
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unsigned long stats_timestamp;
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/* The first is accessed under semaphore locking.
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* The second is the clean one we return to iwconfig.
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*/
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struct iw_statistics local_iwstatistics;
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struct iw_statistics iwstatistics;
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struct iw_spy_data spy_data; /* iwspy support */
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struct iw_public_data wireless_data;
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int monitor_type; /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_PRISM */
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struct islpci_acl acl;
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/* PCI bus allocation & configuration members */
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struct pci_dev *pdev; /* PCI structure information */
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char firmware[33];
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void __iomem *device_base; /* ioremapped device base address */
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/* consistent DMA region */
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void *driver_mem_address; /* base DMA address */
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dma_addr_t device_host_address; /* base DMA address (bus address) */
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dma_addr_t device_psm_buffer; /* host memory for PSM buffering (bus address) */
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/* our network_device structure */
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struct net_device *ndev;
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/* device queue interface members */
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struct isl38xx_cb *control_block; /* device control block
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(== driver_mem_address!) */
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/* Each queue has three indexes:
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* free/index_mgmt/data_rx/tx (called index, see below),
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* driver_curr_frag, and device_curr_frag (in the control block)
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* All indexes are ever-increasing, but interpreted modulo the
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* device queue size when used.
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* index <= device_curr_frag <= driver_curr_frag at all times
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* For rx queues, [index, device_curr_frag) contains fragments
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* that the interrupt processing needs to handle (owned by driver).
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* [device_curr_frag, driver_curr_frag) is the free space in the
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* rx queue, waiting for data (owned by device). The driver
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* increments driver_curr_frag to indicate to the device that more
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* buffers are available.
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* If device_curr_frag == driver_curr_frag, no more rx buffers are
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* available, and the rx DMA engine of the device is halted.
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* For tx queues, [index, device_curr_frag) contains fragments
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* where tx is done; they need to be freed (owned by driver).
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* [device_curr_frag, driver_curr_frag) contains the frames
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* that are being transferred (owned by device). The driver
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* increments driver_curr_frag to indicate that more tx work
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* needs to be done.
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*/
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u32 index_mgmt_rx; /* real index mgmt rx queue */
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u32 index_mgmt_tx; /* read index mgmt tx queue */
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u32 free_data_rx; /* free pointer data rx queue */
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u32 free_data_tx; /* free pointer data tx queue */
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u32 data_low_tx_full; /* full detected flag */
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/* frame memory buffers for the device queues */
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struct islpci_membuf mgmt_tx[ISL38XX_CB_MGMT_QSIZE];
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struct islpci_membuf mgmt_rx[ISL38XX_CB_MGMT_QSIZE];
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struct sk_buff *data_low_tx[ISL38XX_CB_TX_QSIZE];
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struct sk_buff *data_low_rx[ISL38XX_CB_RX_QSIZE];
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dma_addr_t pci_map_tx_address[ISL38XX_CB_TX_QSIZE];
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dma_addr_t pci_map_rx_address[ISL38XX_CB_RX_QSIZE];
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/* driver network interface members */
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struct net_device_stats statistics;
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/* wait for a reset interrupt */
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wait_queue_head_t reset_done;
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/* used by islpci_mgt_transaction */
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struct mutex mgmt_lock; /* serialize access to mailbox and wqueue */
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struct islpci_mgmtframe *mgmt_received; /* mbox for incoming frame */
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wait_queue_head_t mgmt_wqueue; /* waitqueue for mbox */
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/* state machine */
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islpci_state_t state;
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int state_off; /* enumeration of off-state, if 0 then
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* we're not in any off-state */
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/* WPA stuff */
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int wpa; /* WPA mode enabled */
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struct list_head bss_wpa_list;
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int num_bss_wpa;
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struct semaphore wpa_sem;
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u8 wpa_ie[MAX_WPA_IE_LEN];
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size_t wpa_ie_len;
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struct work_struct reset_task;
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int reset_task_pending;
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} islpci_private;
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static inline islpci_state_t
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islpci_get_state(islpci_private *priv)
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{
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/* lock */
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return priv->state;
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/* unlock */
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}
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islpci_state_t islpci_set_state(islpci_private *priv, islpci_state_t new_state);
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#define ISLPCI_TX_TIMEOUT (2*HZ)
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irqreturn_t islpci_interrupt(int, void *);
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int prism54_post_setup(islpci_private *, int);
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int islpci_reset(islpci_private *, int);
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static inline void
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islpci_trigger(islpci_private *priv)
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{
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isl38xx_trigger_device(islpci_get_state(priv) == PRV_STATE_SLEEP,
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priv->device_base);
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}
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int islpci_free_memory(islpci_private *);
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struct net_device *islpci_setup(struct pci_dev *);
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#define DRV_NAME "prism54"
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#define DRV_VERSION "1.2"
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#endif /* _ISLPCI_DEV_H */
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