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path: root/drivers/net/wireless/rt2x00/rt2x00pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00pci.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index a0c8caef3b0a..e87865e33113 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -33,182 +33,6 @@
33#include "rt2x00pci.h" 33#include "rt2x00pci.h"
34 34
35/* 35/*
36 * Register access.
37 */
38int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev,
39 const unsigned int offset,
40 const struct rt2x00_field32 field,
41 u32 *reg)
42{
43 unsigned int i;
44
45 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
46 return 0;
47
48 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
49 rt2x00pci_register_read(rt2x00dev, offset, reg);
50 if (!rt2x00_get_field32(*reg, field))
51 return 1;
52 udelay(REGISTER_BUSY_DELAY);
53 }
54
55 ERROR(rt2x00dev, "Indirect register access failed: "
56 "offset=0x%.08x, value=0x%.08x\n", offset, *reg);
57 *reg = ~0;
58
59 return 0;
60}
61EXPORT_SYMBOL_GPL(rt2x00pci_regbusy_read);
62
63bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
64{
65 struct data_queue *queue = rt2x00dev->rx;
66 struct queue_entry *entry;
67 struct queue_entry_priv_pci *entry_priv;
68 struct skb_frame_desc *skbdesc;
69 int max_rx = 16;
70
71 while (--max_rx) {
72 entry = rt2x00queue_get_entry(queue, Q_INDEX);
73 entry_priv = entry->priv_data;
74
75 if (rt2x00dev->ops->lib->get_entry_state(entry))
76 break;
77
78 /*
79 * Fill in desc fields of the skb descriptor
80 */
81 skbdesc = get_skb_frame_desc(entry->skb);
82 skbdesc->desc = entry_priv->desc;
83 skbdesc->desc_len = entry->queue->desc_size;
84
85 /*
86 * DMA is already done, notify rt2x00lib that
87 * it finished successfully.
88 */
89 rt2x00lib_dmastart(entry);
90 rt2x00lib_dmadone(entry);
91
92 /*
93 * Send the frame to rt2x00lib for further processing.
94 */
95 rt2x00lib_rxdone(entry, GFP_ATOMIC);
96 }
97
98 return !max_rx;
99}
100EXPORT_SYMBOL_GPL(rt2x00pci_rxdone);
101
102void rt2x00pci_flush_queue(struct data_queue *queue, bool drop)
103{
104 unsigned int i;
105
106 for (i = 0; !rt2x00queue_empty(queue) && i < 10; i++)
107 msleep(10);
108}
109EXPORT_SYMBOL_GPL(rt2x00pci_flush_queue);
110
111/*
112 * Device initialization handlers.
113 */
114static int rt2x00pci_alloc_queue_dma(struct rt2x00_dev *rt2x00dev,
115 struct data_queue *queue)
116{
117 struct queue_entry_priv_pci *entry_priv;
118 void *addr;
119 dma_addr_t dma;
120 unsigned int i;
121
122 /*
123 * Allocate DMA memory for descriptor and buffer.
124 */
125 addr = dma_alloc_coherent(rt2x00dev->dev,
126 queue->limit * queue->desc_size,
127 &dma, GFP_KERNEL);
128 if (!addr)
129 return -ENOMEM;
130
131 memset(addr, 0, queue->limit * queue->desc_size);
132
133 /*
134 * Initialize all queue entries to contain valid addresses.
135 */
136 for (i = 0; i < queue->limit; i++) {
137 entry_priv = queue->entries[i].priv_data;
138 entry_priv->desc = addr + i * queue->desc_size;
139 entry_priv->desc_dma = dma + i * queue->desc_size;
140 }
141
142 return 0;
143}
144
145static void rt2x00pci_free_queue_dma(struct rt2x00_dev *rt2x00dev,
146 struct data_queue *queue)
147{
148 struct queue_entry_priv_pci *entry_priv =
149 queue->entries[0].priv_data;
150
151 if (entry_priv->desc)
152 dma_free_coherent(rt2x00dev->dev,
153 queue->limit * queue->desc_size,
154 entry_priv->desc, entry_priv->desc_dma);
155 entry_priv->desc = NULL;
156}
157
158int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev)
159{
160 struct data_queue *queue;
161 int status;
162
163 /*
164 * Allocate DMA
165 */
166 queue_for_each(rt2x00dev, queue) {
167 status = rt2x00pci_alloc_queue_dma(rt2x00dev, queue);
168 if (status)
169 goto exit;
170 }
171
172 /*
173 * Register interrupt handler.
174 */
175 status = request_irq(rt2x00dev->irq,
176 rt2x00dev->ops->lib->irq_handler,
177 IRQF_SHARED, rt2x00dev->name, rt2x00dev);
178 if (status) {
179 ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n",
180 rt2x00dev->irq, status);
181 goto exit;
182 }
183
184 return 0;
185
186exit:
187 queue_for_each(rt2x00dev, queue)
188 rt2x00pci_free_queue_dma(rt2x00dev, queue);
189
190 return status;
191}
192EXPORT_SYMBOL_GPL(rt2x00pci_initialize);
193
194void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev)
195{
196 struct data_queue *queue;
197
198 /*
199 * Free irq line.
200 */
201 free_irq(rt2x00dev->irq, rt2x00dev);
202
203 /*
204 * Free DMA
205 */
206 queue_for_each(rt2x00dev, queue)
207 rt2x00pci_free_queue_dma(rt2x00dev, queue);
208}
209EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize);
210
211/*
212 * PCI driver handlers. 36 * PCI driver handlers.
213 */ 37 */
214static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev) 38static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)