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1da177e4 | 1 | /* |
93b2dd12 | 2 | * Copyright (C) 2002 Intersil Americas Inc. |
1da177e4 LT |
3 | * Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org> |
4 | * Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu> | |
5 | * Copyright (C) 2003 Aurelien Alleaume <slts@free.fr> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _ISLPCI_DEV_H | |
23 | #define _ISLPCI_DEV_H | |
24 | ||
1da177e4 LT |
25 | #include <linux/netdevice.h> |
26 | #include <linux/wireless.h> | |
27 | #include <net/iw_handler.h> | |
28 | #include <linux/list.h> | |
29 | ||
30 | #include "isl_38xx.h" | |
31 | #include "isl_oid.h" | |
32 | #include "islpci_mgt.h" | |
33 | ||
34 | /* some states might not be superflous and may be removed when | |
35 | design is finalized (hvr) */ | |
36 | typedef enum { | |
37 | PRV_STATE_OFF = 0, /* this means hw_unavailable is != 0 */ | |
38 | PRV_STATE_PREBOOT, /* we are in a pre-boot state (empty RAM) */ | |
39 | PRV_STATE_BOOT, /* boot state (fw upload, run fw) */ | |
40 | PRV_STATE_POSTBOOT, /* after boot state, need reset now */ | |
41 | PRV_STATE_PREINIT, /* pre-init state */ | |
42 | PRV_STATE_INIT, /* init state (restore MIB backup to device) */ | |
43 | PRV_STATE_READY, /* driver&device are in operational state */ | |
44 | PRV_STATE_SLEEP /* device in sleep mode */ | |
45 | } islpci_state_t; | |
46 | ||
47 | /* ACL using MAC address */ | |
48 | struct mac_entry { | |
49 | struct list_head _list; | |
50 | char addr[ETH_ALEN]; | |
51 | }; | |
52 | ||
53 | struct islpci_acl { | |
54 | enum { MAC_POLICY_OPEN=0, MAC_POLICY_ACCEPT=1, MAC_POLICY_REJECT=2 } policy; | |
55 | struct list_head mac_list; /* a list of mac_entry */ | |
56 | int size; /* size of queue */ | |
57 | struct semaphore sem; /* accessed in ioctls and trap_work */ | |
58 | }; | |
59 | ||
60 | struct islpci_membuf { | |
61 | int size; /* size of memory */ | |
62 | void *mem; /* address of memory as seen by CPU */ | |
63 | dma_addr_t pci_addr; /* address of memory as seen by device */ | |
64 | }; | |
65 | ||
66 | #define MAX_BSS_WPA_IE_COUNT 64 | |
67 | #define MAX_WPA_IE_LEN 64 | |
68 | struct islpci_bss_wpa_ie { | |
69 | struct list_head list; | |
70 | unsigned long last_update; | |
71 | u8 bssid[ETH_ALEN]; | |
72 | u8 wpa_ie[MAX_WPA_IE_LEN]; | |
73 | size_t wpa_ie_len; | |
93b2dd12 | 74 | |
1da177e4 LT |
75 | }; |
76 | ||
77 | typedef struct { | |
78 | spinlock_t slock; /* generic spinlock; */ | |
93b2dd12 | 79 | |
1da177e4 LT |
80 | u32 priv_oid; |
81 | ||
82 | /* our mib cache */ | |
83 | u32 iw_mode; | |
84 | struct rw_semaphore mib_sem; | |
85 | void **mib; | |
86 | char nickname[IW_ESSID_MAX_SIZE+1]; | |
93b2dd12 | 87 | |
1da177e4 LT |
88 | /* Take care of the wireless stats */ |
89 | struct work_struct stats_work; | |
90 | struct semaphore stats_sem; | |
91 | /* remember when we last updated the stats */ | |
92 | unsigned long stats_timestamp; | |
93 | /* The first is accessed under semaphore locking. | |
94 | * The second is the clean one we return to iwconfig. | |
95 | */ | |
96 | struct iw_statistics local_iwstatistics; | |
97 | struct iw_statistics iwstatistics; | |
98 | ||
99 | struct iw_spy_data spy_data; /* iwspy support */ | |
100 | ||
1da177e4 | 101 | struct iw_public_data wireless_data; |
1da177e4 LT |
102 | |
103 | int monitor_type; /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_PRISM */ | |
104 | ||
105 | struct islpci_acl acl; | |
106 | ||
107 | /* PCI bus allocation & configuration members */ | |
108 | struct pci_dev *pdev; /* PCI structure information */ | |
109 | char firmware[33]; | |
110 | ||
111 | void __iomem *device_base; /* ioremapped device base address */ | |
112 | ||
113 | /* consistent DMA region */ | |
114 | void *driver_mem_address; /* base DMA address */ | |
115 | dma_addr_t device_host_address; /* base DMA address (bus address) */ | |
116 | dma_addr_t device_psm_buffer; /* host memory for PSM buffering (bus address) */ | |
117 | ||
118 | /* our network_device structure */ | |
119 | struct net_device *ndev; | |
120 | ||
121 | /* device queue interface members */ | |
93b2dd12 | 122 | struct isl38xx_cb *control_block; /* device control block |
1da177e4 LT |
123 | (== driver_mem_address!) */ |
124 | ||
125 | /* Each queue has three indexes: | |
126 | * free/index_mgmt/data_rx/tx (called index, see below), | |
127 | * driver_curr_frag, and device_curr_frag (in the control block) | |
128 | * All indexes are ever-increasing, but interpreted modulo the | |
129 | * device queue size when used. | |
130 | * index <= device_curr_frag <= driver_curr_frag at all times | |
131 | * For rx queues, [index, device_curr_frag) contains fragments | |
132 | * that the interrupt processing needs to handle (owned by driver). | |
133 | * [device_curr_frag, driver_curr_frag) is the free space in the | |
134 | * rx queue, waiting for data (owned by device). The driver | |
135 | * increments driver_curr_frag to indicate to the device that more | |
136 | * buffers are available. | |
137 | * If device_curr_frag == driver_curr_frag, no more rx buffers are | |
138 | * available, and the rx DMA engine of the device is halted. | |
139 | * For tx queues, [index, device_curr_frag) contains fragments | |
140 | * where tx is done; they need to be freed (owned by driver). | |
141 | * [device_curr_frag, driver_curr_frag) contains the frames | |
142 | * that are being transferred (owned by device). The driver | |
143 | * increments driver_curr_frag to indicate that more tx work | |
144 | * needs to be done. | |
145 | */ | |
146 | u32 index_mgmt_rx; /* real index mgmt rx queue */ | |
147 | u32 index_mgmt_tx; /* read index mgmt tx queue */ | |
148 | u32 free_data_rx; /* free pointer data rx queue */ | |
149 | u32 free_data_tx; /* free pointer data tx queue */ | |
150 | u32 data_low_tx_full; /* full detected flag */ | |
151 | ||
152 | /* frame memory buffers for the device queues */ | |
153 | struct islpci_membuf mgmt_tx[ISL38XX_CB_MGMT_QSIZE]; | |
154 | struct islpci_membuf mgmt_rx[ISL38XX_CB_MGMT_QSIZE]; | |
155 | struct sk_buff *data_low_tx[ISL38XX_CB_TX_QSIZE]; | |
156 | struct sk_buff *data_low_rx[ISL38XX_CB_RX_QSIZE]; | |
157 | dma_addr_t pci_map_tx_address[ISL38XX_CB_TX_QSIZE]; | |
158 | dma_addr_t pci_map_rx_address[ISL38XX_CB_RX_QSIZE]; | |
159 | ||
160 | /* driver network interface members */ | |
161 | struct net_device_stats statistics; | |
162 | ||
163 | /* wait for a reset interrupt */ | |
164 | wait_queue_head_t reset_done; | |
165 | ||
166 | /* used by islpci_mgt_transaction */ | |
167 | struct semaphore mgmt_sem; /* serialize access to mailbox and wqueue */ | |
168 | struct islpci_mgmtframe *mgmt_received; /* mbox for incoming frame */ | |
169 | wait_queue_head_t mgmt_wqueue; /* waitqueue for mbox */ | |
170 | ||
171 | /* state machine */ | |
172 | islpci_state_t state; | |
173 | int state_off; /* enumeration of off-state, if 0 then | |
174 | * we're not in any off-state */ | |
175 | ||
176 | /* WPA stuff */ | |
177 | int wpa; /* WPA mode enabled */ | |
178 | struct list_head bss_wpa_list; | |
179 | int num_bss_wpa; | |
180 | struct semaphore wpa_sem; | |
eab411f1 DW |
181 | u8 wpa_ie[MAX_WPA_IE_LEN]; |
182 | size_t wpa_ie_len; | |
1da177e4 LT |
183 | |
184 | struct work_struct reset_task; | |
185 | int reset_task_pending; | |
186 | } islpci_private; | |
187 | ||
188 | static inline islpci_state_t | |
189 | islpci_get_state(islpci_private *priv) | |
190 | { | |
191 | /* lock */ | |
192 | return priv->state; | |
193 | /* unlock */ | |
194 | } | |
195 | ||
196 | islpci_state_t islpci_set_state(islpci_private *priv, islpci_state_t new_state); | |
197 | ||
198 | #define ISLPCI_TX_TIMEOUT (2*HZ) | |
199 | ||
7d12e780 | 200 | irqreturn_t islpci_interrupt(int, void *); |
1da177e4 LT |
201 | |
202 | int prism54_post_setup(islpci_private *, int); | |
203 | int islpci_reset(islpci_private *, int); | |
204 | ||
205 | static inline void | |
206 | islpci_trigger(islpci_private *priv) | |
207 | { | |
208 | isl38xx_trigger_device(islpci_get_state(priv) == PRV_STATE_SLEEP, | |
209 | priv->device_base); | |
210 | } | |
211 | ||
212 | int islpci_free_memory(islpci_private *); | |
213 | struct net_device *islpci_setup(struct pci_dev *); | |
214 | #endif /* _ISLPCI_DEV_H */ |