1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
4 *
5 * Contact Information: wlanfae <wlanfae@realtek.com>
6 */
7 #include "rtl_core.h"
8 #include "r8192E_hw.h"
9 #include "r8192E_cmdpkt.h"
10
rtl92e_send_cmd_pkt(struct net_device * dev,u32 type,const void * data,u32 len)11 bool rtl92e_send_cmd_pkt(struct net_device *dev, u32 type, const void *data,
12 u32 len)
13 {
14 bool rt_status = true;
15 struct r8192_priv *priv = rtllib_priv(dev);
16 u16 frag_length = 0, frag_offset = 0;
17 struct sk_buff *skb;
18 unsigned char *seg_ptr;
19 struct cb_desc *tcb_desc;
20 u8 bLastIniPkt;
21
22 struct tx_fwinfo_8190pci *pTxFwInfo = NULL;
23
24 do {
25 if ((len - frag_offset) > CMDPACKET_FRAG_SIZE) {
26 frag_length = CMDPACKET_FRAG_SIZE;
27 bLastIniPkt = 0;
28
29 } else {
30 frag_length = (u16)(len - frag_offset);
31 bLastIniPkt = 1;
32 }
33
34 if (type == DESC_PACKET_TYPE_NORMAL)
35 skb = dev_alloc_skb(frag_length +
36 priv->rtllib->tx_headroom + 4);
37 else
38 skb = dev_alloc_skb(frag_length + 4);
39
40 if (!skb) {
41 rt_status = false;
42 goto Failed;
43 }
44
45 memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
46 tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
47 tcb_desc->queue_index = TXCMD_QUEUE;
48 tcb_desc->bCmdOrInit = type;
49 tcb_desc->bLastIniPkt = bLastIniPkt;
50
51 if (type == DESC_PACKET_TYPE_NORMAL) {
52 tcb_desc->pkt_size = frag_length;
53
54 seg_ptr = skb_put(skb, priv->rtllib->tx_headroom);
55 pTxFwInfo = (struct tx_fwinfo_8190pci *)seg_ptr;
56 memset(pTxFwInfo, 0, sizeof(struct tx_fwinfo_8190pci));
57 memset(pTxFwInfo, 0x12, 8);
58 } else {
59 tcb_desc->txbuf_size = frag_length;
60 }
61
62 skb_put_data(skb, data, frag_length);
63
64 if (type == DESC_PACKET_TYPE_INIT &&
65 (!priv->rtllib->check_nic_enough_desc(dev, TXCMD_QUEUE) ||
66 (!skb_queue_empty(&priv->rtllib->skb_waitQ[TXCMD_QUEUE])) ||
67 (priv->rtllib->queue_stop))) {
68 skb_queue_tail(&priv->rtllib->skb_waitQ[TXCMD_QUEUE],
69 skb);
70 } else {
71 priv->rtllib->softmac_hard_start_xmit(skb, dev);
72 }
73
74 data += frag_length;
75 frag_offset += frag_length;
76
77 } while (frag_offset < len);
78
79 rtl92e_writeb(dev, TP_POLL, TP_POLL_CQ);
80 Failed:
81 return rt_status;
82 }
83