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 RT_TRACE(COMP_CMDPKT, "%s(),buffer_len is %d\n", __func__, len);
25
26 do {
27 if ((len - frag_offset) > CMDPACKET_FRAG_SIZE) {
28 frag_length = CMDPACKET_FRAG_SIZE;
29 bLastIniPkt = 0;
30
31 } else {
32 frag_length = (u16)(len - frag_offset);
33 bLastIniPkt = 1;
34 }
35
36 if (type == DESC_PACKET_TYPE_NORMAL)
37 skb = dev_alloc_skb(frag_length +
38 priv->rtllib->tx_headroom + 4);
39 else
40 skb = dev_alloc_skb(frag_length + 4);
41
42 if (!skb) {
43 rt_status = false;
44 goto Failed;
45 }
46
47 memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
48 tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
49 tcb_desc->queue_index = TXCMD_QUEUE;
50 tcb_desc->bCmdOrInit = type;
51 tcb_desc->bLastIniPkt = bLastIniPkt;
52
53 if (type == DESC_PACKET_TYPE_NORMAL) {
54 tcb_desc->pkt_size = frag_length;
55
56 seg_ptr = skb_put(skb, priv->rtllib->tx_headroom);
57 pTxFwInfo = (struct tx_fwinfo_8190pci *)seg_ptr;
58 memset(pTxFwInfo, 0, sizeof(struct tx_fwinfo_8190pci));
59 memset(pTxFwInfo, 0x12, 8);
60 } else {
61 tcb_desc->txbuf_size = (u16)frag_length;
62 }
63
64 seg_ptr = skb_put(skb, frag_length);
65 memcpy(seg_ptr, data, (u32)frag_length);
66
67 if (type == DESC_PACKET_TYPE_INIT &&
68 (!priv->rtllib->check_nic_enough_desc(dev, TXCMD_QUEUE) ||
69 (!skb_queue_empty(&priv->rtllib->skb_waitQ[TXCMD_QUEUE])) ||
70 (priv->rtllib->queue_stop))) {
71 skb_queue_tail(&priv->rtllib->skb_waitQ[TXCMD_QUEUE],
72 skb);
73 } else {
74 priv->rtllib->softmac_hard_start_xmit(skb, dev);
75 }
76
77 data += frag_length;
78 frag_offset += frag_length;
79
80 } while (frag_offset < len);
81
82 rtl92e_writeb(dev, TPPoll, TPPoll_CQ);
83 Failed:
84 return rt_status;
85 }
86