staging: brcm80211: remove NULL pointer checks before calling kfree
[cascardo/linux.git] / drivers / staging / brcm80211 / brcmsmac / wlc_phy_shim.c
1 /*
2  * Copyright (c) 2010 Broadcom Corporation
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16
17 /*
18  * This is "two-way" interface, acting as the SHIM layer between WL and PHY layer.
19  *   WL driver can optinally call this translation layer to do some preprocessing, then reach PHY.
20  *   On the PHY->WL driver direction, all calls go through this layer since PHY doesn't have the
21  *   access to wlc_hw pointer.
22  */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/pci.h>
27
28 #include <proto/802.11.h>
29 #include <osl.h>
30 #include <bcmdefs.h>
31 #include <bcmutils.h>
32 #include <bcmwifi.h>
33 #include <siutils.h>
34 #include <wlioctl.h>
35 #include <sbconfig.h>
36 #include <sbchipc.h>
37 #include <pcicfg.h>
38 #include <sbhnddma.h>
39 #include <hnddma.h>
40 #include <hndpmu.h>
41
42 #include "wlc_types.h"
43 #include "wl_dbg.h"
44 #include "wlc_cfg.h"
45 #include "d11.h"
46 #include "wlc_rate.h"
47 #include "wlc_scb.h"
48 #include "wlc_pub.h"
49 #include "phy/wlc_phy_hal.h"
50 #include "wlc_channel.h"
51 #include "bcmsrom.h"
52 #include "wlc_key.h"
53 #include "wlc_bmac.h"
54 #include "wlc_phy_hal.h"
55 #include "wl_export.h"
56 #include "wlc_bsscfg.h"
57 #include "wlc_mac80211.h"
58 #include "wlc_phy_shim.h"
59
60 /* PHY SHIM module specific state */
61 struct wlc_phy_shim_info {
62         struct wlc_hw_info *wlc_hw;     /* pointer to main wlc_hw structure */
63         void *wlc;              /* pointer to main wlc structure */
64         void *wl;               /* pointer to os-specific private state */
65 };
66
67 wlc_phy_shim_info_t *wlc_phy_shim_attach(struct wlc_hw_info *wlc_hw,
68                                                        void *wl, void *wlc) {
69         wlc_phy_shim_info_t *physhim = NULL;
70
71         physhim = kzalloc(sizeof(wlc_phy_shim_info_t), GFP_ATOMIC);
72         if (!physhim) {
73                 WL_ERROR("wl%d: wlc_phy_shim_attach: out of mem\n",
74                          wlc_hw->unit);
75                 return NULL;
76         }
77         physhim->wlc_hw = wlc_hw;
78         physhim->wlc = wlc;
79         physhim->wl = wl;
80
81         return physhim;
82 }
83
84 void wlc_phy_shim_detach(wlc_phy_shim_info_t *physhim)
85 {
86         kfree(physhim);
87 }
88
89 struct wlapi_timer *wlapi_init_timer(wlc_phy_shim_info_t *physhim,
90                                      void (*fn) (void *arg), void *arg,
91                                      const char *name)
92 {
93         return (struct wlapi_timer *)wl_init_timer(physhim->wl, fn, arg, name);
94 }
95
96 void wlapi_free_timer(wlc_phy_shim_info_t *physhim, struct wlapi_timer *t)
97 {
98         wl_free_timer(physhim->wl, (struct wl_timer *)t);
99 }
100
101 void
102 wlapi_add_timer(wlc_phy_shim_info_t *physhim, struct wlapi_timer *t, uint ms,
103                 int periodic)
104 {
105         wl_add_timer(physhim->wl, (struct wl_timer *)t, ms, periodic);
106 }
107
108 bool wlapi_del_timer(wlc_phy_shim_info_t *physhim, struct wlapi_timer *t)
109 {
110         return wl_del_timer(physhim->wl, (struct wl_timer *)t);
111 }
112
113 void wlapi_intrson(wlc_phy_shim_info_t *physhim)
114 {
115         wl_intrson(physhim->wl);
116 }
117
118 u32 wlapi_intrsoff(wlc_phy_shim_info_t *physhim)
119 {
120         return wl_intrsoff(physhim->wl);
121 }
122
123 void wlapi_intrsrestore(wlc_phy_shim_info_t *physhim, u32 macintmask)
124 {
125         wl_intrsrestore(physhim->wl, macintmask);
126 }
127
128 void wlapi_bmac_write_shm(wlc_phy_shim_info_t *physhim, uint offset, u16 v)
129 {
130         wlc_bmac_write_shm(physhim->wlc_hw, offset, v);
131 }
132
133 u16 wlapi_bmac_read_shm(wlc_phy_shim_info_t *physhim, uint offset)
134 {
135         return wlc_bmac_read_shm(physhim->wlc_hw, offset);
136 }
137
138 void
139 wlapi_bmac_mhf(wlc_phy_shim_info_t *physhim, u8 idx, u16 mask,
140                u16 val, int bands)
141 {
142         wlc_bmac_mhf(physhim->wlc_hw, idx, mask, val, bands);
143 }
144
145 void wlapi_bmac_corereset(wlc_phy_shim_info_t *physhim, u32 flags)
146 {
147         wlc_bmac_corereset(physhim->wlc_hw, flags);
148 }
149
150 void wlapi_suspend_mac_and_wait(wlc_phy_shim_info_t *physhim)
151 {
152         wlc_suspend_mac_and_wait(physhim->wlc);
153 }
154
155 void wlapi_switch_macfreq(wlc_phy_shim_info_t *physhim, u8 spurmode)
156 {
157         wlc_bmac_switch_macfreq(physhim->wlc_hw, spurmode);
158 }
159
160 void wlapi_enable_mac(wlc_phy_shim_info_t *physhim)
161 {
162         wlc_enable_mac(physhim->wlc);
163 }
164
165 void wlapi_bmac_mctrl(wlc_phy_shim_info_t *physhim, u32 mask, u32 val)
166 {
167         wlc_bmac_mctrl(physhim->wlc_hw, mask, val);
168 }
169
170 void wlapi_bmac_phy_reset(wlc_phy_shim_info_t *physhim)
171 {
172         wlc_bmac_phy_reset(physhim->wlc_hw);
173 }
174
175 void wlapi_bmac_bw_set(wlc_phy_shim_info_t *physhim, u16 bw)
176 {
177         wlc_bmac_bw_set(physhim->wlc_hw, bw);
178 }
179
180 u16 wlapi_bmac_get_txant(wlc_phy_shim_info_t *physhim)
181 {
182         return wlc_bmac_get_txant(physhim->wlc_hw);
183 }
184
185 void wlapi_bmac_phyclk_fgc(wlc_phy_shim_info_t *physhim, bool clk)
186 {
187         wlc_bmac_phyclk_fgc(physhim->wlc_hw, clk);
188 }
189
190 void wlapi_bmac_macphyclk_set(wlc_phy_shim_info_t *physhim, bool clk)
191 {
192         wlc_bmac_macphyclk_set(physhim->wlc_hw, clk);
193 }
194
195 void wlapi_bmac_core_phypll_ctl(wlc_phy_shim_info_t *physhim, bool on)
196 {
197         wlc_bmac_core_phypll_ctl(physhim->wlc_hw, on);
198 }
199
200 void wlapi_bmac_core_phypll_reset(wlc_phy_shim_info_t *physhim)
201 {
202         wlc_bmac_core_phypll_reset(physhim->wlc_hw);
203 }
204
205 void wlapi_bmac_ucode_wake_override_phyreg_set(wlc_phy_shim_info_t *physhim)
206 {
207         wlc_ucode_wake_override_set(physhim->wlc_hw, WLC_WAKE_OVERRIDE_PHYREG);
208 }
209
210 void wlapi_bmac_ucode_wake_override_phyreg_clear(wlc_phy_shim_info_t *physhim)
211 {
212         wlc_ucode_wake_override_clear(physhim->wlc_hw,
213                                       WLC_WAKE_OVERRIDE_PHYREG);
214 }
215
216 void
217 wlapi_bmac_write_template_ram(wlc_phy_shim_info_t *physhim, int offset,
218                               int len, void *buf)
219 {
220         wlc_bmac_write_template_ram(physhim->wlc_hw, offset, len, buf);
221 }
222
223 u16 wlapi_bmac_rate_shm_offset(wlc_phy_shim_info_t *physhim, u8 rate)
224 {
225         return wlc_bmac_rate_shm_offset(physhim->wlc_hw, rate);
226 }
227
228 void wlapi_ucode_sample_init(wlc_phy_shim_info_t *physhim)
229 {
230 }
231
232 void
233 wlapi_copyfrom_objmem(wlc_phy_shim_info_t *physhim, uint offset, void *buf,
234                       int len, u32 sel)
235 {
236         wlc_bmac_copyfrom_objmem(physhim->wlc_hw, offset, buf, len, sel);
237 }
238
239 void
240 wlapi_copyto_objmem(wlc_phy_shim_info_t *physhim, uint offset, const void *buf,
241                     int l, u32 sel)
242 {
243         wlc_bmac_copyto_objmem(physhim->wlc_hw, offset, buf, l, sel);
244 }