3 * Copyright (C) 2002 Intersil Americas Inc.
4 * Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
5 * Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>
6 * Copyright (C) 2003 Aurelien Alleaume <slts@free.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <linux/version.h>
27 #include <linux/netdevice.h>
28 #include <linux/wireless.h>
29 #include <net/iw_handler.h>
30 #include <linux/list.h>
32 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,41)
33 # include <linux/workqueue.h>
35 # include <linux/tqueue.h>
36 # define work_struct tq_struct
37 # define INIT_WORK INIT_TQUEUE
38 # define schedule_work schedule_task
41 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23)
42 #define free_netdev(x) kfree(x)
43 #define pci_name(x) x->slot_name
48 #include "islpci_mgt.h"
50 /* some states might not be superflous and may be removed when
51 design is finalized (hvr) */
53 PRV_STATE_OFF = 0, /* this means hw_unavailable is != 0 */
54 PRV_STATE_PREBOOT, /* we are in a pre-boot state (empty RAM) */
55 PRV_STATE_BOOT, /* boot state (fw upload, run fw) */
56 PRV_STATE_POSTBOOT, /* after boot state, need reset now */
57 PRV_STATE_PREINIT, /* pre-init state */
58 PRV_STATE_INIT, /* init state (restore MIB backup to device) */
59 PRV_STATE_READY, /* driver&device are in operational state */
60 PRV_STATE_SLEEP /* device in sleep mode */
63 /* ACL using MAC address */
65 struct list_head _list;
70 enum { MAC_POLICY_OPEN=0, MAC_POLICY_ACCEPT=1, MAC_POLICY_REJECT=2 } policy;
71 struct list_head mac_list; /* a list of mac_entry */
72 int size; /* size of queue */
73 struct semaphore sem; /* accessed in ioctls and trap_work */
76 struct islpci_membuf {
77 int size; /* size of memory */
78 void *mem; /* address of memory as seen by CPU */
79 dma_addr_t pci_addr; /* address of memory as seen by device */
82 #define MAX_BSS_WPA_IE_COUNT 64
83 #define MAX_WPA_IE_LEN 64
84 struct islpci_bss_wpa_ie {
85 struct list_head list;
86 unsigned long last_update;
88 u8 wpa_ie[MAX_WPA_IE_LEN];
94 spinlock_t slock; /* generic spinlock; */
100 struct rw_semaphore mib_sem;
102 char nickname[IW_ESSID_MAX_SIZE+1];
104 /* Take care of the wireless stats */
105 struct work_struct stats_work;
106 struct semaphore stats_sem;
107 /* remember when we last updated the stats */
108 unsigned long stats_timestamp;
109 /* The first is accessed under semaphore locking.
110 * The second is the clean one we return to iwconfig.
112 struct iw_statistics local_iwstatistics;
113 struct iw_statistics iwstatistics;
115 struct iw_spy_data spy_data; /* iwspy support */
117 int monitor_type; /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_PRISM */
119 struct islpci_acl acl;
121 /* PCI bus allocation & configuration members */
122 struct pci_dev *pdev; /* PCI structure information */
123 u32 pci_state[16]; /* used for suspend/resume */
126 void *device_base; /* ioremapped device base address */
128 /* consistent DMA region */
129 void *driver_mem_address; /* base DMA address */
130 dma_addr_t device_host_address; /* base DMA address (bus address) */
131 dma_addr_t device_psm_buffer; /* host memory for PSM buffering (bus address) */
133 /* our network_device structure */
134 struct net_device *ndev;
136 /* device queue interface members */
137 struct isl38xx_cb *control_block; /* device control block
138 (== driver_mem_address!) */
140 /* Each queue has three indexes:
141 * free/index_mgmt/data_rx/tx (called index, see below),
142 * driver_curr_frag, and device_curr_frag (in the control block)
143 * All indexes are ever-increasing, but interpreted modulo the
144 * device queue size when used.
145 * index <= device_curr_frag <= driver_curr_frag at all times
146 * For rx queues, [index, device_curr_frag) contains fragments
147 * that the interrupt processing needs to handle (owned by driver).
148 * [device_curr_frag, driver_curr_frag) is the free space in the
149 * rx queue, waiting for data (owned by device). The driver
150 * increments driver_curr_frag to indicate to the device that more
151 * buffers are available.
152 * If device_curr_frag == driver_curr_frag, no more rx buffers are
153 * available, and the rx DMA engine of the device is halted.
154 * For tx queues, [index, device_curr_frag) contains fragments
155 * where tx is done; they need to be freed (owned by driver).
156 * [device_curr_frag, driver_curr_frag) contains the frames
157 * that are being transferred (owned by device). The driver
158 * increments driver_curr_frag to indicate that more tx work
161 u32 index_mgmt_rx; /* real index mgmt rx queue */
162 u32 index_mgmt_tx; /* read index mgmt tx queue */
163 u32 free_data_rx; /* free pointer data rx queue */
164 u32 free_data_tx; /* free pointer data tx queue */
165 u32 data_low_tx_full; /* full detected flag */
167 /* frame memory buffers for the device queues */
168 struct islpci_membuf mgmt_tx[ISL38XX_CB_MGMT_QSIZE];
169 struct islpci_membuf mgmt_rx[ISL38XX_CB_MGMT_QSIZE];
170 struct sk_buff *data_low_tx[ISL38XX_CB_TX_QSIZE];
171 struct sk_buff *data_low_rx[ISL38XX_CB_RX_QSIZE];
172 dma_addr_t pci_map_tx_address[ISL38XX_CB_TX_QSIZE];
173 dma_addr_t pci_map_rx_address[ISL38XX_CB_RX_QSIZE];
175 /* driver network interface members */
176 struct net_device_stats statistics;
178 /* wait for a reset interrupt */
179 wait_queue_head_t reset_done;
181 /* used by islpci_mgt_transaction */
182 struct semaphore mgmt_sem; /* serialize access to mailbox and wqueue */
183 struct islpci_mgmtframe *mgmt_received; /* mbox for incoming frame */
184 wait_queue_head_t mgmt_wqueue; /* waitqueue for mbox */
187 islpci_state_t state;
188 int state_off; /* enumeration of off-state, if 0 then
189 * we're not in any off-state */
192 int wpa; /* WPA mode enabled */
193 struct list_head bss_wpa_list;
195 struct semaphore wpa_sem;
197 struct work_struct reset_task;
198 int reset_task_pending;
201 static inline islpci_state_t
202 islpci_get_state(islpci_private *priv)
209 islpci_state_t islpci_set_state(islpci_private *priv, islpci_state_t new_state);
211 #define ISLPCI_TX_TIMEOUT (2*HZ)
213 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,75))
214 # define irqreturn_t void
219 irqreturn_t islpci_interrupt(int, void *, struct pt_regs *);
221 int prism54_post_setup(islpci_private *, int);
222 int islpci_reset(islpci_private *, int);
225 islpci_trigger(islpci_private *priv)
227 isl38xx_trigger_device(islpci_get_state(priv) == PRV_STATE_SLEEP,
231 struct net_device_stats *islpci_statistics(struct net_device *);
233 int prism54_bring_down(islpci_private *);
234 int islpci_alloc_memory(islpci_private *);
235 int islpci_free_memory(islpci_private *);
236 struct net_device *islpci_setup(struct pci_dev *);
237 #endif /* _ISLPCI_DEV_H */