diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtlwifi/pci.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtlwifi/pci.c | 2395 |
1 files changed, 2395 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c new file mode 100644 index 000000000..6116c1bec --- /dev/null +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c @@ -0,0 +1,2395 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2009-2012 Realtek Corporation.*/ + +#include "wifi.h" +#include "core.h" +#include "pci.h" +#include "base.h" +#include "ps.h" +#include "efuse.h" +#include <linux/interrupt.h> +#include <linux/export.h> +#include <linux/module.h> + +MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>"); +MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>"); +MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("PCI basic driver for rtlwifi"); + +static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = { + INTEL_VENDOR_ID, + ATI_VENDOR_ID, + AMD_VENDOR_ID, + SIS_VENDOR_ID +}; + +static const u8 ac_to_hwq[] = { + VO_QUEUE, + VI_QUEUE, + BE_QUEUE, + BK_QUEUE +}; + +static u8 _rtl_mac_to_hwqueue(struct ieee80211_hw *hw, struct sk_buff *skb) +{ + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + __le16 fc = rtl_get_fc(skb); + u8 queue_index = skb_get_queue_mapping(skb); + struct ieee80211_hdr *hdr; + + if (unlikely(ieee80211_is_beacon(fc))) + return BEACON_QUEUE; + if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) + return MGNT_QUEUE; + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) + if (ieee80211_is_nullfunc(fc)) + return HIGH_QUEUE; + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) { + hdr = rtl_get_hdr(skb); + + if (is_multicast_ether_addr(hdr->addr1) || + is_broadcast_ether_addr(hdr->addr1)) + return HIGH_QUEUE; + } + + return ac_to_hwq[queue_index]; +} + +/* Update PCI dependent default settings*/ +static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; + u8 init_aspm; + + ppsc->reg_rfps_level = 0; + ppsc->support_aspm = false; + + /*Update PCI ASPM setting */ + ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm; + switch (rtlpci->const_pci_aspm) { + case 0: + /*No ASPM */ + break; + + case 1: + /*ASPM dynamically enabled/disable. */ + ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM; + break; + + case 2: + /*ASPM with Clock Req dynamically enabled/disable. */ + ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM | + RT_RF_OFF_LEVL_CLK_REQ); + break; + + case 3: + /* Always enable ASPM and Clock Req + * from initialization to halt. + */ + ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM); + ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM | + RT_RF_OFF_LEVL_CLK_REQ); + break; + + case 4: + /* Always enable ASPM without Clock Req + * from initialization to halt. + */ + ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM | + RT_RF_OFF_LEVL_CLK_REQ); + ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM; + break; + } + + ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC; + + /*Update Radio OFF setting */ + switch (rtlpci->const_hwsw_rfoff_d3) { + case 1: + if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM) + ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM; + break; + + case 2: + if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM) + ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM; + ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC; + break; + + case 3: + ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3; + break; + } + + /*Set HW definition to determine if it supports ASPM. */ + switch (rtlpci->const_support_pciaspm) { + case 0: + /*Not support ASPM. */ + ppsc->support_aspm = false; + break; + case 1: + /*Support ASPM. */ + ppsc->support_aspm = true; + ppsc->support_backdoor = true; + break; + case 2: + /*ASPM value set by chipset. */ + if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) + ppsc->support_aspm = true; + break; + default: + pr_err("switch case %#x not processed\n", + rtlpci->const_support_pciaspm); + break; + } + + /* toshiba aspm issue, toshiba will set aspm selfly + * so we should not set aspm in driver + */ + pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm); + if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE && + init_aspm == 0x43) + ppsc->support_aspm = false; +} + +static bool _rtl_pci_platform_switch_device_pci_aspm( + struct ieee80211_hw *hw, + u8 value) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + + value &= PCI_EXP_LNKCTL_ASPMC; + + if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE) + value |= PCI_EXP_LNKCTL_CCC; + + pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL, + PCI_EXP_LNKCTL_ASPMC | value, + value); + + return false; +} + +/* @value is PCI_EXP_LNKCTL_CLKREQ_EN or 0 to enable/disable clk request. */ +static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u16 value) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + + value &= PCI_EXP_LNKCTL_CLKREQ_EN; + + pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL, + PCI_EXP_LNKCTL_CLKREQ_EN, + value); + + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) + udelay(100); +} + +/*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/ +static void rtl_pci_disable_aspm(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; + /*Retrieve original configuration settings. */ + u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg; + u16 aspmlevel = 0; + u8 tmp_u1b = 0; + + if (!ppsc->support_aspm) + return; + + if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) { + rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE, + "PCI(Bridge) UNKNOWN\n"); + + return; + } + + if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) { + RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ); + _rtl_pci_switch_clk_req(hw, 0x0); + } + + /*for promising device will in L0 state after an I/O. */ + pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b); + + /*Set corresponding value. */ + aspmlevel |= BIT(0) | BIT(1); + linkctrl_reg &= ~aspmlevel; + + _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg); +} + +/*Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for + *power saving We should follow the sequence to enable + *RTL8192SE first then enable Pci Bridge ASPM + *or the system will show bluescreen. + */ +static void rtl_pci_enable_aspm(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor; + u16 aspmlevel; + u8 u_device_aspmsetting; + + if (!ppsc->support_aspm) + return; + + if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) { + rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE, + "PCI(Bridge) UNKNOWN\n"); + return; + } + + /*Get ASPM level (with/without Clock Req) */ + aspmlevel = rtlpci->const_devicepci_aspm_setting; + u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg; + + /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/ + /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */ + + u_device_aspmsetting |= aspmlevel; + + _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting); + + if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) { + _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level & + RT_RF_OFF_LEVL_CLK_REQ) ? + PCI_EXP_LNKCTL_CLKREQ_EN : 0); + RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ); + } + udelay(100); +} + +static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + + bool status = false; + u8 offset_e0; + unsigned int offset_e4; + + pci_write_config_byte(rtlpci->pdev, 0xe0, 0xa0); + + pci_read_config_byte(rtlpci->pdev, 0xe0, &offset_e0); + + if (offset_e0 == 0xA0) { + pci_read_config_dword(rtlpci->pdev, 0xe4, &offset_e4); + if (offset_e4 & BIT(23)) + status = true; + } + + return status; +} + +static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw, + struct rtl_priv **buddy_priv) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_priv *tpriv = NULL, *iter; + struct rtl_pci_priv *tpcipriv = NULL; + + if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) { + list_for_each_entry(iter, &rtlpriv->glb_var->glb_priv_list, + list) { + tpcipriv = (struct rtl_pci_priv *)iter->priv; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "pcipriv->ndis_adapter.funcnumber %x\n", + pcipriv->ndis_adapter.funcnumber); + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "tpcipriv->ndis_adapter.funcnumber %x\n", + tpcipriv->ndis_adapter.funcnumber); + + if (pcipriv->ndis_adapter.busnumber == + tpcipriv->ndis_adapter.busnumber && + pcipriv->ndis_adapter.devnumber == + tpcipriv->ndis_adapter.devnumber && + pcipriv->ndis_adapter.funcnumber != + tpcipriv->ndis_adapter.funcnumber) { + tpriv = iter; + break; + } + } + } + + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "find_buddy_priv %d\n", tpriv != NULL); + + if (tpriv) + *buddy_priv = tpriv; + + return tpriv != NULL; +} + +static void rtl_pci_parse_configuration(struct pci_dev *pdev, + struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + + u8 tmp; + u16 linkctrl_reg; + + /*Link Control Register */ + pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &linkctrl_reg); + pcipriv->ndis_adapter.linkctrl_reg = (u8)linkctrl_reg; + + rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n", + pcipriv->ndis_adapter.linkctrl_reg); + + pci_read_config_byte(pdev, 0x98, &tmp); + tmp |= BIT(4); + pci_write_config_byte(pdev, 0x98, tmp); + + tmp = 0x17; + pci_write_config_byte(pdev, 0x70f, tmp); +} + +static void rtl_pci_init_aspm(struct ieee80211_hw *hw) +{ + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + + _rtl_pci_update_default_setting(hw); + + if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) { + /*Always enable ASPM & Clock Req. */ + rtl_pci_enable_aspm(hw); + RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM); + } +} + +static void _rtl_pci_io_handler_init(struct device *dev, + struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + rtlpriv->io.dev = dev; + + rtlpriv->io.write8_async = pci_write8_async; + rtlpriv->io.write16_async = pci_write16_async; + rtlpriv->io.write32_async = pci_write32_async; + + rtlpriv->io.read8_sync = pci_read8_sync; + rtlpriv->io.read16_sync = pci_read16_sync; + rtlpriv->io.read32_sync = pci_read32_sync; +} + +static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw, + struct sk_buff *skb, + struct rtl_tcb_desc *tcb_desc, u8 tid) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + struct sk_buff *next_skb; + u8 additionlen = FCS_LEN; + + /* here open is 4, wep/tkip is 8, aes is 12*/ + if (info->control.hw_key) + additionlen += info->control.hw_key->icv_len; + + /* The most skb num is 6 */ + tcb_desc->empkt_num = 0; + spin_lock_bh(&rtlpriv->locks.waitq_lock); + skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) { + struct ieee80211_tx_info *next_info; + + next_info = IEEE80211_SKB_CB(next_skb); + if (next_info->flags & IEEE80211_TX_CTL_AMPDU) { + tcb_desc->empkt_len[tcb_desc->empkt_num] = + next_skb->len + additionlen; + tcb_desc->empkt_num++; + } else { + break; + } + + if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid], + next_skb)) + break; + + if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num) + break; + } + spin_unlock_bh(&rtlpriv->locks.waitq_lock); + + return true; +} + +/* just for early mode now */ +static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct sk_buff *skb = NULL; + struct ieee80211_tx_info *info = NULL; + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + int tid; + + if (!rtlpriv->rtlhal.earlymode_enable) + return; + + if (rtlpriv->dm.supp_phymode_switch && + (rtlpriv->easy_concurrent_ctl.switch_in_process || + (rtlpriv->buddy_priv && + rtlpriv->buddy_priv->easy_concurrent_ctl.switch_in_process))) + return; + /* we just use em for BE/BK/VI/VO */ + for (tid = 7; tid >= 0; tid--) { + u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(tid)]; + struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue]; + + while (!mac->act_scanning && + rtlpriv->psc.rfpwr_state == ERFON) { + struct rtl_tcb_desc tcb_desc; + + memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc)); + + spin_lock(&rtlpriv->locks.waitq_lock); + if (!skb_queue_empty(&mac->skb_waitq[tid]) && + (ring->entries - skb_queue_len(&ring->queue) > + rtlhal->max_earlymode_num)) { + skb = skb_dequeue(&mac->skb_waitq[tid]); + } else { + spin_unlock(&rtlpriv->locks.waitq_lock); + break; + } + spin_unlock(&rtlpriv->locks.waitq_lock); + + /* Some macaddr can't do early mode. like + * multicast/broadcast/no_qos data + */ + info = IEEE80211_SKB_CB(skb); + if (info->flags & IEEE80211_TX_CTL_AMPDU) + _rtl_update_earlymode_info(hw, skb, + &tcb_desc, tid); + + rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc); + } + } +} + +static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + + struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio]; + + while (skb_queue_len(&ring->queue)) { + struct sk_buff *skb; + struct ieee80211_tx_info *info; + __le16 fc; + u8 tid; + u8 *entry; + + if (rtlpriv->use_new_trx_flow) + entry = (u8 *)(&ring->buffer_desc[ring->idx]); + else + entry = (u8 *)(&ring->desc[ring->idx]); + + if (!rtlpriv->cfg->ops->is_tx_desc_closed(hw, prio, ring->idx)) + return; + ring->idx = (ring->idx + 1) % ring->entries; + + skb = __skb_dequeue(&ring->queue); + dma_unmap_single(&rtlpci->pdev->dev, + rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, + true, HW_DESC_TXBUFF_ADDR), + skb->len, DMA_TO_DEVICE); + + /* remove early mode header */ + if (rtlpriv->rtlhal.earlymode_enable) + skb_pull(skb, EM_HDR_LEN); + + rtl_dbg(rtlpriv, (COMP_INTR | COMP_SEND), DBG_TRACE, + "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n", + ring->idx, + skb_queue_len(&ring->queue), + *(u16 *)(skb->data + 22)); + + if (prio == TXCMD_QUEUE) { + dev_kfree_skb(skb); + goto tx_status_ok; + } + + /* for sw LPS, just after NULL skb send out, we can + * sure AP knows we are sleeping, we should not let + * rf sleep + */ + fc = rtl_get_fc(skb); + if (ieee80211_is_nullfunc(fc)) { + if (ieee80211_has_pm(fc)) { + rtlpriv->mac80211.offchan_delay = true; + rtlpriv->psc.state_inap = true; + } else { + rtlpriv->psc.state_inap = false; + } + } + if (ieee80211_is_action(fc)) { + struct ieee80211_mgmt *action_frame = + (struct ieee80211_mgmt *)skb->data; + if (action_frame->u.action.u.ht_smps.action == + WLAN_HT_ACTION_SMPS) { + dev_kfree_skb(skb); + goto tx_status_ok; + } + } + + /* update tid tx pkt num */ + tid = rtl_get_tid(skb); + if (tid <= 7) + rtlpriv->link_info.tidtx_inperiod[tid]++; + + info = IEEE80211_SKB_CB(skb); + + if (likely(!ieee80211_is_nullfunc(fc))) { + ieee80211_tx_info_clear_status(info); + info->flags |= IEEE80211_TX_STAT_ACK; + /*info->status.rates[0].count = 1; */ + ieee80211_tx_status_irqsafe(hw, skb); + } else { + rtl_tx_ackqueue(hw, skb); + } + + if ((ring->entries - skb_queue_len(&ring->queue)) <= 4) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_DMESG, + "more desc left, wake skb_queue@%d, ring->idx = %d, skb_queue_len = 0x%x\n", + prio, ring->idx, + skb_queue_len(&ring->queue)); + + ieee80211_wake_queue(hw, skb_get_queue_mapping(skb)); + } +tx_status_ok: + skb = NULL; + } + + if (((rtlpriv->link_info.num_rx_inperiod + + rtlpriv->link_info.num_tx_inperiod) > 8) || + rtlpriv->link_info.num_rx_inperiod > 2) + rtl_lps_leave(hw, false); +} + +static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw, + struct sk_buff *new_skb, u8 *entry, + int rxring_idx, int desc_idx) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + u32 bufferaddress; + u8 tmp_one = 1; + struct sk_buff *skb; + + if (likely(new_skb)) { + skb = new_skb; + goto remap; + } + skb = dev_alloc_skb(rtlpci->rxbuffersize); + if (!skb) + return 0; + +remap: + /* just set skb->cb to mapping addr for pci_unmap_single use */ + *((dma_addr_t *)skb->cb) = + dma_map_single(&rtlpci->pdev->dev, skb_tail_pointer(skb), + rtlpci->rxbuffersize, DMA_FROM_DEVICE); + bufferaddress = *((dma_addr_t *)skb->cb); + if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress)) + return 0; + rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb; + if (rtlpriv->use_new_trx_flow) { + /* skb->cb may be 64 bit address */ + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RX_PREPARE, + (u8 *)(dma_addr_t *)skb->cb); + } else { + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RXBUFF_ADDR, + (u8 *)&bufferaddress); + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RXPKT_LEN, + (u8 *)&rtlpci->rxbuffersize); + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RXOWN, + (u8 *)&tmp_one); + } + return 1; +} + +/* inorder to receive 8K AMSDU we have set skb to + * 9100bytes in init rx ring, but if this packet is + * not a AMSDU, this large packet will be sent to + * TCP/IP directly, this cause big packet ping fail + * like: "ping -s 65507", so here we will realloc skb + * based on the true size of packet, Mac80211 + * Probably will do it better, but does not yet. + * + * Some platform will fail when alloc skb sometimes. + * in this condition, we will send the old skb to + * mac80211 directly, this will not cause any other + * issues, but only this packet will be lost by TCP/IP + */ +static void _rtl_pci_rx_to_mac80211(struct ieee80211_hw *hw, + struct sk_buff *skb, + struct ieee80211_rx_status rx_status) +{ + if (unlikely(!rtl_action_proc(hw, skb, false))) { + dev_kfree_skb_any(skb); + } else { + struct sk_buff *uskb = NULL; + + uskb = dev_alloc_skb(skb->len + 128); + if (likely(uskb)) { + memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status, + sizeof(rx_status)); + skb_put_data(uskb, skb->data, skb->len); + dev_kfree_skb_any(skb); + ieee80211_rx_irqsafe(hw, uskb); + } else { + ieee80211_rx_irqsafe(hw, skb); + } + } +} + +/*hsisr interrupt handler*/ +static void _rtl_pci_hs_interrupt(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + + rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR], + rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR]) | + rtlpci->sys_irq_mask); +} + +static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + int rxring_idx = RTL_PCI_RX_MPDU_QUEUE; + struct ieee80211_rx_status rx_status = { 0 }; + unsigned int count = rtlpci->rxringcount; + u8 own; + u8 tmp_one; + bool unicast = false; + u8 hw_queue = 0; + unsigned int rx_remained_cnt = 0; + struct rtl_stats stats = { + .signal = 0, + .rate = 0, + }; + + /*RX NORMAL PKT */ + while (count--) { + struct ieee80211_hdr *hdr; + __le16 fc; + u16 len; + /*rx buffer descriptor */ + struct rtl_rx_buffer_desc *buffer_desc = NULL; + /*if use new trx flow, it means wifi info */ + struct rtl_rx_desc *pdesc = NULL; + /*rx pkt */ + struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[ + rtlpci->rx_ring[rxring_idx].idx]; + struct sk_buff *new_skb; + + if (rtlpriv->use_new_trx_flow) { + if (rx_remained_cnt == 0) + rx_remained_cnt = + rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw, + hw_queue); + if (rx_remained_cnt == 0) + return; + buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[ + rtlpci->rx_ring[rxring_idx].idx]; + pdesc = (struct rtl_rx_desc *)skb->data; + } else { /* rx descriptor */ + pdesc = &rtlpci->rx_ring[rxring_idx].desc[ + rtlpci->rx_ring[rxring_idx].idx]; + + own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, + false, + HW_DESC_OWN); + if (own) /* wait data to be filled by hardware */ + return; + } + + /* Reaching this point means: data is filled already + * AAAAAAttention !!! + * We can NOT access 'skb' before 'pci_unmap_single' + */ + dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb), + rtlpci->rxbuffersize, DMA_FROM_DEVICE); + + /* get a new skb - if fail, old one will be reused */ + new_skb = dev_alloc_skb(rtlpci->rxbuffersize); + if (unlikely(!new_skb)) + goto no_new; + memset(&rx_status, 0, sizeof(rx_status)); + rtlpriv->cfg->ops->query_rx_desc(hw, &stats, + &rx_status, (u8 *)pdesc, skb); + + if (rtlpriv->use_new_trx_flow) + rtlpriv->cfg->ops->rx_check_dma_ok(hw, + (u8 *)buffer_desc, + hw_queue); + + len = rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, false, + HW_DESC_RXPKT_LEN); + + if (skb->end - skb->tail > len) { + skb_put(skb, len); + if (rtlpriv->use_new_trx_flow) + skb_reserve(skb, stats.rx_drvinfo_size + + stats.rx_bufshift + 24); + else + skb_reserve(skb, stats.rx_drvinfo_size + + stats.rx_bufshift); + } else { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "skb->end - skb->tail = %d, len is %d\n", + skb->end - skb->tail, len); + dev_kfree_skb_any(skb); + goto new_trx_end; + } + /* handle command packet here */ + if (stats.packet_report_type == C2H_PACKET) { + rtl_c2hcmd_enqueue(hw, skb); + goto new_trx_end; + } + + /* NOTICE This can not be use for mac80211, + * this is done in mac80211 code, + * if done here sec DHCP will fail + * skb_trim(skb, skb->len - 4); + */ + + hdr = rtl_get_hdr(skb); + fc = rtl_get_fc(skb); + + if (!stats.crc && !stats.hwerror && (skb->len > FCS_LEN)) { + memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, + sizeof(rx_status)); + + if (is_broadcast_ether_addr(hdr->addr1)) { + ;/*TODO*/ + } else if (is_multicast_ether_addr(hdr->addr1)) { + ;/*TODO*/ + } else { + unicast = true; + rtlpriv->stats.rxbytesunicast += skb->len; + } + rtl_is_special_data(hw, skb, false, true); + + if (ieee80211_is_data(fc)) { + rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX); + if (unicast) + rtlpriv->link_info.num_rx_inperiod++; + } + + rtl_collect_scan_list(hw, skb); + + /* static bcn for roaming */ + rtl_beacon_statistic(hw, skb); + rtl_p2p_info(hw, (void *)skb->data, skb->len); + /* for sw lps */ + rtl_swlps_beacon(hw, (void *)skb->data, skb->len); + rtl_recognize_peer(hw, (void *)skb->data, skb->len); + if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP && + rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G && + (ieee80211_is_beacon(fc) || + ieee80211_is_probe_resp(fc))) { + dev_kfree_skb_any(skb); + } else { + _rtl_pci_rx_to_mac80211(hw, skb, rx_status); + } + } else { + /* drop packets with errors or those too short */ + dev_kfree_skb_any(skb); + } +new_trx_end: + if (rtlpriv->use_new_trx_flow) { + rtlpci->rx_ring[hw_queue].next_rx_rp += 1; + rtlpci->rx_ring[hw_queue].next_rx_rp %= + RTL_PCI_MAX_RX_COUNT; + + rx_remained_cnt--; + rtl_write_word(rtlpriv, 0x3B4, + rtlpci->rx_ring[hw_queue].next_rx_rp); + } + if (((rtlpriv->link_info.num_rx_inperiod + + rtlpriv->link_info.num_tx_inperiod) > 8) || + rtlpriv->link_info.num_rx_inperiod > 2) + rtl_lps_leave(hw, false); + skb = new_skb; +no_new: + if (rtlpriv->use_new_trx_flow) { + _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc, + rxring_idx, + rtlpci->rx_ring[rxring_idx].idx); + } else { + _rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc, + rxring_idx, + rtlpci->rx_ring[rxring_idx].idx); + if (rtlpci->rx_ring[rxring_idx].idx == + rtlpci->rxringcount - 1) + rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, + false, + HW_DESC_RXERO, + (u8 *)&tmp_one); + } + rtlpci->rx_ring[rxring_idx].idx = + (rtlpci->rx_ring[rxring_idx].idx + 1) % + rtlpci->rxringcount; + } +} + +static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id) +{ + struct ieee80211_hw *hw = dev_id; + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + unsigned long flags; + struct rtl_int intvec = {0}; + + irqreturn_t ret = IRQ_HANDLED; + + if (rtlpci->irq_enabled == 0) + return ret; + + spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); + rtlpriv->cfg->ops->disable_interrupt(hw); + + /*read ISR: 4/8bytes */ + rtlpriv->cfg->ops->interrupt_recognized(hw, &intvec); + + /*Shared IRQ or HW disappeared */ + if (!intvec.inta || intvec.inta == 0xffff) + goto done; + + /*<1> beacon related */ + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK]) + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "beacon ok interrupt!\n"); + + if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_TBDER])) + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "beacon err interrupt!\n"); + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BDOK]) + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "beacon interrupt!\n"); + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BCNINT]) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "prepare beacon for interrupt!\n"); + tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet); + } + + /*<2> Tx related */ + if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW])) + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n"); + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "Manage ok interrupt!\n"); + _rtl_pci_tx_isr(hw, MGNT_QUEUE); + } + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "HIGH_QUEUE ok interrupt!\n"); + _rtl_pci_tx_isr(hw, HIGH_QUEUE); + } + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "BK Tx OK interrupt!\n"); + _rtl_pci_tx_isr(hw, BK_QUEUE); + } + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "BE TX OK interrupt!\n"); + _rtl_pci_tx_isr(hw, BE_QUEUE); + } + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "VI TX OK interrupt!\n"); + _rtl_pci_tx_isr(hw, VI_QUEUE); + } + + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "Vo TX OK interrupt!\n"); + _rtl_pci_tx_isr(hw, VO_QUEUE); + } + + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) { + if (intvec.intd & rtlpriv->cfg->maps[RTL_IMR_H2CDOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "H2C TX OK interrupt!\n"); + _rtl_pci_tx_isr(hw, H2C_QUEUE); + } + } + + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) { + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) { + rtlpriv->link_info.num_tx_inperiod++; + + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "CMD TX OK interrupt!\n"); + _rtl_pci_tx_isr(hw, TXCMD_QUEUE); + } + } + + /*<3> Rx related */ + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n"); + _rtl_pci_rx_interrupt(hw); + } + + if (unlikely(intvec.inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "rx descriptor unavailable!\n"); + _rtl_pci_rx_interrupt(hw); + } + + if (unlikely(intvec.intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n"); + _rtl_pci_rx_interrupt(hw); + } + + /*<4> fw related*/ + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) { + if (intvec.inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "firmware interrupt!\n"); + queue_delayed_work(rtlpriv->works.rtl_wq, + &rtlpriv->works.fwevt_wq, 0); + } + } + + /*<5> hsisr related*/ + /* Only 8188EE & 8723BE Supported. + * If Other ICs Come in, System will corrupt, + * because maps[RTL_IMR_HSISR_IND] & maps[MAC_HSISR] + * are not initialized + */ + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8188EE || + rtlhal->hw_type == HARDWARE_TYPE_RTL8723BE) { + if (unlikely(intvec.inta & + rtlpriv->cfg->maps[RTL_IMR_HSISR_IND])) { + rtl_dbg(rtlpriv, COMP_INTR, DBG_TRACE, + "hsisr interrupt!\n"); + _rtl_pci_hs_interrupt(hw); + } + } + + if (rtlpriv->rtlhal.earlymode_enable) + tasklet_schedule(&rtlpriv->works.irq_tasklet); + +done: + rtlpriv->cfg->ops->enable_interrupt(hw); + spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); + return ret; +} + +static void _rtl_pci_irq_tasklet(struct tasklet_struct *t) +{ + struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t, works.irq_tasklet); + struct ieee80211_hw *hw = rtlpriv->hw; + _rtl_pci_tx_chk_waitq(hw); +} + +static void _rtl_pci_prepare_bcn_tasklet(struct tasklet_struct *t) +{ + struct rtl_priv *rtlpriv = from_tasklet(rtlpriv, t, + works.irq_prepare_bcn_tasklet); + struct ieee80211_hw *hw = rtlpriv->hw; + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + struct rtl8192_tx_ring *ring = NULL; + struct ieee80211_hdr *hdr = NULL; + struct ieee80211_tx_info *info = NULL; + struct sk_buff *pskb = NULL; + struct rtl_tx_desc *pdesc = NULL; + struct rtl_tcb_desc tcb_desc; + /*This is for new trx flow*/ + struct rtl_tx_buffer_desc *pbuffer_desc = NULL; + u8 temp_one = 1; + u8 *entry; + + memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc)); + ring = &rtlpci->tx_ring[BEACON_QUEUE]; + pskb = __skb_dequeue(&ring->queue); + if (rtlpriv->use_new_trx_flow) + entry = (u8 *)(&ring->buffer_desc[ring->idx]); + else + entry = (u8 *)(&ring->desc[ring->idx]); + if (pskb) { + dma_unmap_single(&rtlpci->pdev->dev, + rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, + true, HW_DESC_TXBUFF_ADDR), + pskb->len, DMA_TO_DEVICE); + kfree_skb(pskb); + } + + /*NB: the beacon data buffer must be 32-bit aligned. */ + pskb = ieee80211_beacon_get(hw, mac->vif, 0); + if (!pskb) + return; + hdr = rtl_get_hdr(pskb); + info = IEEE80211_SKB_CB(pskb); + pdesc = &ring->desc[0]; + if (rtlpriv->use_new_trx_flow) + pbuffer_desc = &ring->buffer_desc[0]; + + rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, + (u8 *)pbuffer_desc, info, NULL, pskb, + BEACON_QUEUE, &tcb_desc); + + __skb_queue_tail(&ring->queue, pskb); + + if (rtlpriv->use_new_trx_flow) { + temp_one = 4; + rtlpriv->cfg->ops->set_desc(hw, (u8 *)pbuffer_desc, true, + HW_DESC_OWN, (u8 *)&temp_one); + } else { + rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, HW_DESC_OWN, + &temp_one); + } +} + +static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_hal *rtlhal = rtl_hal(rtlpriv); + u8 i; + u16 desc_num; + + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE) + desc_num = TX_DESC_NUM_92E; + else if (rtlhal->hw_type == HARDWARE_TYPE_RTL8822BE) + desc_num = TX_DESC_NUM_8822B; + else + desc_num = RT_TXDESC_NUM; + + for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) + rtlpci->txringcount[i] = desc_num; + + /*we just alloc 2 desc for beacon queue, + *because we just need first desc in hw beacon. + */ + rtlpci->txringcount[BEACON_QUEUE] = 2; + + /*BE queue need more descriptor for performance + *consideration or, No more tx desc will happen, + *and may cause mac80211 mem leakage. + */ + if (!rtl_priv(hw)->use_new_trx_flow) + rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE; + + rtlpci->rxbuffersize = 9100; /*2048/1024; */ + rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT; /*64; */ +} + +static void _rtl_pci_init_struct(struct ieee80211_hw *hw, + struct pci_dev *pdev) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + + rtlpci->up_first_time = true; + rtlpci->being_init_adapter = false; + + rtlhal->hw = hw; + rtlpci->pdev = pdev; + + /*Tx/Rx related var */ + _rtl_pci_init_trx_var(hw); + + /*IBSS*/ + mac->beacon_interval = 100; + + /*AMPDU*/ + mac->min_space_cfg = 0; + mac->max_mss_density = 0; + /*set sane AMPDU defaults */ + mac->current_ampdu_density = 7; + mac->current_ampdu_factor = 3; + + /*Retry Limit*/ + mac->retry_short = 7; + mac->retry_long = 7; + + /*QOS*/ + rtlpci->acm_method = EACMWAY2_SW; + + /*task */ + tasklet_setup(&rtlpriv->works.irq_tasklet, _rtl_pci_irq_tasklet); + tasklet_setup(&rtlpriv->works.irq_prepare_bcn_tasklet, + _rtl_pci_prepare_bcn_tasklet); + INIT_WORK(&rtlpriv->works.lps_change_work, + rtl_lps_change_work_callback); +} + +static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw, + unsigned int prio, unsigned int entries) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_tx_buffer_desc *buffer_desc; + struct rtl_tx_desc *desc; + dma_addr_t buffer_desc_dma, desc_dma; + u32 nextdescaddress; + int i; + + /* alloc tx buffer desc for new trx flow*/ + if (rtlpriv->use_new_trx_flow) { + buffer_desc = + dma_alloc_coherent(&rtlpci->pdev->dev, + sizeof(*buffer_desc) * entries, + &buffer_desc_dma, GFP_KERNEL); + + if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) { + pr_err("Cannot allocate TX ring (prio = %d)\n", + prio); + return -ENOMEM; + } + + rtlpci->tx_ring[prio].buffer_desc = buffer_desc; + rtlpci->tx_ring[prio].buffer_desc_dma = buffer_desc_dma; + + rtlpci->tx_ring[prio].cur_tx_rp = 0; + rtlpci->tx_ring[prio].cur_tx_wp = 0; + } + + /* alloc dma for this ring */ + desc = dma_alloc_coherent(&rtlpci->pdev->dev, sizeof(*desc) * entries, + &desc_dma, GFP_KERNEL); + + if (!desc || (unsigned long)desc & 0xFF) { + pr_err("Cannot allocate TX ring (prio = %d)\n", prio); + return -ENOMEM; + } + + rtlpci->tx_ring[prio].desc = desc; + rtlpci->tx_ring[prio].dma = desc_dma; + + rtlpci->tx_ring[prio].idx = 0; + rtlpci->tx_ring[prio].entries = entries; + skb_queue_head_init(&rtlpci->tx_ring[prio].queue); + + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n", + prio, desc); + + /* init every desc in this ring */ + if (!rtlpriv->use_new_trx_flow) { + for (i = 0; i < entries; i++) { + nextdescaddress = (u32)desc_dma + + ((i + 1) % entries) * + sizeof(*desc); + + rtlpriv->cfg->ops->set_desc(hw, (u8 *)&desc[i], + true, + HW_DESC_TX_NEXTDESC_ADDR, + (u8 *)&nextdescaddress); + } + } + return 0; +} + +static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw, int rxring_idx) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_priv *rtlpriv = rtl_priv(hw); + int i; + + if (rtlpriv->use_new_trx_flow) { + struct rtl_rx_buffer_desc *entry = NULL; + /* alloc dma for this ring */ + rtlpci->rx_ring[rxring_idx].buffer_desc = + dma_alloc_coherent(&rtlpci->pdev->dev, + sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) * + rtlpci->rxringcount, + &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL); + if (!rtlpci->rx_ring[rxring_idx].buffer_desc || + (ulong)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) { + pr_err("Cannot allocate RX ring\n"); + return -ENOMEM; + } + + /* init every desc in this ring */ + rtlpci->rx_ring[rxring_idx].idx = 0; + for (i = 0; i < rtlpci->rxringcount; i++) { + entry = &rtlpci->rx_ring[rxring_idx].buffer_desc[i]; + if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry, + rxring_idx, i)) + return -ENOMEM; + } + } else { + struct rtl_rx_desc *entry = NULL; + u8 tmp_one = 1; + /* alloc dma for this ring */ + rtlpci->rx_ring[rxring_idx].desc = + dma_alloc_coherent(&rtlpci->pdev->dev, + sizeof(*rtlpci->rx_ring[rxring_idx].desc) * + rtlpci->rxringcount, + &rtlpci->rx_ring[rxring_idx].dma, GFP_KERNEL); + if (!rtlpci->rx_ring[rxring_idx].desc || + (unsigned long)rtlpci->rx_ring[rxring_idx].desc & 0xFF) { + pr_err("Cannot allocate RX ring\n"); + return -ENOMEM; + } + + /* init every desc in this ring */ + rtlpci->rx_ring[rxring_idx].idx = 0; + + for (i = 0; i < rtlpci->rxringcount; i++) { + entry = &rtlpci->rx_ring[rxring_idx].desc[i]; + if (!_rtl_pci_init_one_rxdesc(hw, NULL, (u8 *)entry, + rxring_idx, i)) + return -ENOMEM; + } + + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RXERO, &tmp_one); + } + return 0; +} + +static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw, + unsigned int prio) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio]; + + /* free every desc in this ring */ + while (skb_queue_len(&ring->queue)) { + u8 *entry; + struct sk_buff *skb = __skb_dequeue(&ring->queue); + + if (rtlpriv->use_new_trx_flow) + entry = (u8 *)(&ring->buffer_desc[ring->idx]); + else + entry = (u8 *)(&ring->desc[ring->idx]); + + dma_unmap_single(&rtlpci->pdev->dev, + rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, + true, HW_DESC_TXBUFF_ADDR), + skb->len, DMA_TO_DEVICE); + kfree_skb(skb); + ring->idx = (ring->idx + 1) % ring->entries; + } + + /* free dma of this ring */ + dma_free_coherent(&rtlpci->pdev->dev, + sizeof(*ring->desc) * ring->entries, ring->desc, + ring->dma); + ring->desc = NULL; + if (rtlpriv->use_new_trx_flow) { + dma_free_coherent(&rtlpci->pdev->dev, + sizeof(*ring->buffer_desc) * ring->entries, + ring->buffer_desc, ring->buffer_desc_dma); + ring->buffer_desc = NULL; + } +} + +static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + int i; + + /* free every desc in this ring */ + for (i = 0; i < rtlpci->rxringcount; i++) { + struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[i]; + + if (!skb) + continue; + dma_unmap_single(&rtlpci->pdev->dev, *((dma_addr_t *)skb->cb), + rtlpci->rxbuffersize, DMA_FROM_DEVICE); + kfree_skb(skb); + } + + /* free dma of this ring */ + if (rtlpriv->use_new_trx_flow) { + dma_free_coherent(&rtlpci->pdev->dev, + sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) * + rtlpci->rxringcount, + rtlpci->rx_ring[rxring_idx].buffer_desc, + rtlpci->rx_ring[rxring_idx].dma); + rtlpci->rx_ring[rxring_idx].buffer_desc = NULL; + } else { + dma_free_coherent(&rtlpci->pdev->dev, + sizeof(*rtlpci->rx_ring[rxring_idx].desc) * + rtlpci->rxringcount, + rtlpci->rx_ring[rxring_idx].desc, + rtlpci->rx_ring[rxring_idx].dma); + rtlpci->rx_ring[rxring_idx].desc = NULL; + } +} + +static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + int ret; + int i, rxring_idx; + + /* rxring_idx 0:RX_MPDU_QUEUE + * rxring_idx 1:RX_CMD_QUEUE + */ + for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) { + ret = _rtl_pci_init_rx_ring(hw, rxring_idx); + if (ret) + return ret; + } + + for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) { + ret = _rtl_pci_init_tx_ring(hw, i, rtlpci->txringcount[i]); + if (ret) + goto err_free_rings; + } + + return 0; + +err_free_rings: + for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) + _rtl_pci_free_rx_ring(hw, rxring_idx); + + for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) + if (rtlpci->tx_ring[i].desc || + rtlpci->tx_ring[i].buffer_desc) + _rtl_pci_free_tx_ring(hw, i); + + return 1; +} + +static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw) +{ + u32 i, rxring_idx; + + /*free rx rings */ + for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) + _rtl_pci_free_rx_ring(hw, rxring_idx); + + /*free tx rings */ + for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) + _rtl_pci_free_tx_ring(hw, i); + + return 0; +} + +int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + int i, rxring_idx; + unsigned long flags; + u8 tmp_one = 1; + u32 bufferaddress; + /* rxring_idx 0:RX_MPDU_QUEUE */ + /* rxring_idx 1:RX_CMD_QUEUE */ + for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) { + /* force the rx_ring[RX_MPDU_QUEUE/ + * RX_CMD_QUEUE].idx to the first one + *new trx flow, do nothing + */ + if (!rtlpriv->use_new_trx_flow && + rtlpci->rx_ring[rxring_idx].desc) { + struct rtl_rx_desc *entry = NULL; + + rtlpci->rx_ring[rxring_idx].idx = 0; + for (i = 0; i < rtlpci->rxringcount; i++) { + entry = &rtlpci->rx_ring[rxring_idx].desc[i]; + bufferaddress = + rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, + false, HW_DESC_RXBUFF_ADDR); + memset((u8 *)entry, 0, + sizeof(*rtlpci->rx_ring + [rxring_idx].desc));/*clear one entry*/ + if (rtlpriv->use_new_trx_flow) { + rtlpriv->cfg->ops->set_desc(hw, + (u8 *)entry, false, + HW_DESC_RX_PREPARE, + (u8 *)&bufferaddress); + } else { + rtlpriv->cfg->ops->set_desc(hw, + (u8 *)entry, false, + HW_DESC_RXBUFF_ADDR, + (u8 *)&bufferaddress); + rtlpriv->cfg->ops->set_desc(hw, + (u8 *)entry, false, + HW_DESC_RXPKT_LEN, + (u8 *)&rtlpci->rxbuffersize); + rtlpriv->cfg->ops->set_desc(hw, + (u8 *)entry, false, + HW_DESC_RXOWN, + (u8 *)&tmp_one); + } + } + rtlpriv->cfg->ops->set_desc(hw, (u8 *)entry, false, + HW_DESC_RXERO, (u8 *)&tmp_one); + } + rtlpci->rx_ring[rxring_idx].idx = 0; + } + + /*after reset, release previous pending packet, + *and force the tx idx to the first one + */ + spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); + for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) { + if (rtlpci->tx_ring[i].desc || + rtlpci->tx_ring[i].buffer_desc) { + struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i]; + + while (skb_queue_len(&ring->queue)) { + u8 *entry; + struct sk_buff *skb = + __skb_dequeue(&ring->queue); + if (rtlpriv->use_new_trx_flow) + entry = (u8 *)(&ring->buffer_desc + [ring->idx]); + else + entry = (u8 *)(&ring->desc[ring->idx]); + + dma_unmap_single(&rtlpci->pdev->dev, + rtlpriv->cfg->ops->get_desc(hw, (u8 *)entry, + true, HW_DESC_TXBUFF_ADDR), + skb->len, DMA_TO_DEVICE); + dev_kfree_skb_irq(skb); + ring->idx = (ring->idx + 1) % ring->entries; + } + + if (rtlpriv->use_new_trx_flow) { + rtlpci->tx_ring[i].cur_tx_rp = 0; + rtlpci->tx_ring[i].cur_tx_wp = 0; + } + + ring->idx = 0; + ring->entries = rtlpci->txringcount[i]; + } + } + spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); + + return 0; +} + +static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + struct sk_buff *skb) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_sta_info *sta_entry = NULL; + u8 tid = rtl_get_tid(skb); + __le16 fc = rtl_get_fc(skb); + + if (!sta) + return false; + sta_entry = (struct rtl_sta_info *)sta->drv_priv; + + if (!rtlpriv->rtlhal.earlymode_enable) + return false; + if (ieee80211_is_nullfunc(fc)) + return false; + if (ieee80211_is_qos_nullfunc(fc)) + return false; + if (ieee80211_is_pspoll(fc)) + return false; + if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL) + return false; + if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE) + return false; + if (tid > 7) + return false; + + /* maybe every tid should be checked */ + if (!rtlpriv->link_info.higher_busytxtraffic[tid]) + return false; + + spin_lock_bh(&rtlpriv->locks.waitq_lock); + skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb); + spin_unlock_bh(&rtlpriv->locks.waitq_lock); + + return true; +} + +static int rtl_pci_tx(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + struct sk_buff *skb, + struct rtl_tcb_desc *ptcb_desc) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct rtl8192_tx_ring *ring; + struct rtl_tx_desc *pdesc; + struct rtl_tx_buffer_desc *ptx_bd_desc = NULL; + u16 idx; + u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb); + unsigned long flags; + struct ieee80211_hdr *hdr = rtl_get_hdr(skb); + __le16 fc = rtl_get_fc(skb); + u8 *pda_addr = hdr->addr1; + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + u8 own; + u8 temp_one = 1; + + if (ieee80211_is_mgmt(fc)) + rtl_tx_mgmt_proc(hw, skb); + + if (rtlpriv->psc.sw_ps_enabled) { + if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) && + !ieee80211_has_pm(fc)) + hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); + } + + rtl_action_proc(hw, skb, true); + + if (is_multicast_ether_addr(pda_addr)) + rtlpriv->stats.txbytesmulticast += skb->len; + else if (is_broadcast_ether_addr(pda_addr)) + rtlpriv->stats.txbytesbroadcast += skb->len; + else + rtlpriv->stats.txbytesunicast += skb->len; + + spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags); + ring = &rtlpci->tx_ring[hw_queue]; + if (hw_queue != BEACON_QUEUE) { + if (rtlpriv->use_new_trx_flow) + idx = ring->cur_tx_wp; + else + idx = (ring->idx + skb_queue_len(&ring->queue)) % + ring->entries; + } else { + idx = 0; + } + + pdesc = &ring->desc[idx]; + if (rtlpriv->use_new_trx_flow) { + ptx_bd_desc = &ring->buffer_desc[idx]; + } else { + own = (u8)rtlpriv->cfg->ops->get_desc(hw, (u8 *)pdesc, + true, HW_DESC_OWN); + + if (own == 1 && hw_queue != BEACON_QUEUE) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "No more TX desc@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n", + hw_queue, ring->idx, idx, + skb_queue_len(&ring->queue)); + + spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, + flags); + return skb->len; + } + } + + if (rtlpriv->cfg->ops->get_available_desc && + rtlpriv->cfg->ops->get_available_desc(hw, hw_queue) == 0) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "get_available_desc fail\n"); + spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); + return skb->len; + } + + if (ieee80211_is_data(fc)) + rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX); + + rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, + (u8 *)ptx_bd_desc, info, sta, skb, hw_queue, ptcb_desc); + + __skb_queue_tail(&ring->queue, skb); + + if (rtlpriv->use_new_trx_flow) { + rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, + HW_DESC_OWN, &hw_queue); + } else { + rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, true, + HW_DESC_OWN, &temp_one); + } + + if ((ring->entries - skb_queue_len(&ring->queue)) < 2 && + hw_queue != BEACON_QUEUE) { + rtl_dbg(rtlpriv, COMP_ERR, DBG_LOUD, + "less desc left, stop skb_queue@%d, ring->idx = %d, idx = %d, skb_queue_len = 0x%x\n", + hw_queue, ring->idx, idx, + skb_queue_len(&ring->queue)); + + ieee80211_stop_queue(hw, skb_get_queue_mapping(skb)); + } + + spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags); + + rtlpriv->cfg->ops->tx_polling(hw, hw_queue); + + return 0; +} + +static void rtl_pci_flush(struct ieee80211_hw *hw, u32 queues, bool drop) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + u16 i = 0; + int queue_id; + struct rtl8192_tx_ring *ring; + + if (mac->skip_scan) + return; + + for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) { + u32 queue_len; + + if (((queues >> queue_id) & 0x1) == 0) { + queue_id--; + continue; + } + ring = &pcipriv->dev.tx_ring[queue_id]; + queue_len = skb_queue_len(&ring->queue); + if (queue_len == 0 || queue_id == BEACON_QUEUE || + queue_id == TXCMD_QUEUE) { + queue_id--; + continue; + } else { + msleep(20); + i++; + } + + /* we just wait 1s for all queues */ + if (rtlpriv->psc.rfpwr_state == ERFOFF || + is_hal_stop(rtlhal) || i >= 200) + return; + } +} + +static void rtl_pci_deinit(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + + _rtl_pci_deinit_trx_ring(hw); + + synchronize_irq(rtlpci->pdev->irq); + tasklet_kill(&rtlpriv->works.irq_tasklet); + cancel_work_sync(&rtlpriv->works.lps_change_work); + + destroy_workqueue(rtlpriv->works.rtl_wq); +} + +static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev) +{ + int err; + + _rtl_pci_init_struct(hw, pdev); + + err = _rtl_pci_init_trx_ring(hw); + if (err) { + pr_err("tx ring initialization failed\n"); + return err; + } + + return 0; +} + +static int rtl_pci_start(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); + struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops; + + int err; + + rtl_pci_reset_trx_ring(hw); + + rtlpci->driver_is_goingto_unload = false; + if (rtlpriv->cfg->ops->get_btc_status && + rtlpriv->cfg->ops->get_btc_status()) { + rtlpriv->btcoexist.btc_info.ap_num = 36; + btc_ops->btc_init_variables(rtlpriv); + btc_ops->btc_init_hal_vars(rtlpriv); + } else if (btc_ops) { + btc_ops->btc_init_variables_wifi_only(rtlpriv); + } + + err = rtlpriv->cfg->ops->hw_init(hw); + if (err) { + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "Failed to config hardware!\n"); + kfree(rtlpriv->btcoexist.btc_context); + kfree(rtlpriv->btcoexist.wifi_only_context); + return err; + } + rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT, + &rtlmac->retry_long); + + rtlpriv->cfg->ops->enable_interrupt(hw); + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "enable_interrupt OK\n"); + + rtl_init_rx_config(hw); + + /*should be after adapter start and interrupt enable. */ + set_hal_start(rtlhal); + + RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); + + rtlpci->up_first_time = false; + + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, "%s OK\n", __func__); + return 0; +} + +static void rtl_pci_stop(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + unsigned long flags; + u8 rf_timeout = 0; + + if (rtlpriv->cfg->ops->get_btc_status()) + rtlpriv->btcoexist.btc_ops->btc_halt_notify(rtlpriv); + + if (rtlpriv->btcoexist.btc_ops) + rtlpriv->btcoexist.btc_ops->btc_deinit_variables(rtlpriv); + + /*should be before disable interrupt&adapter + *and will do it immediately. + */ + set_hal_stop(rtlhal); + + rtlpci->driver_is_goingto_unload = true; + rtlpriv->cfg->ops->disable_interrupt(hw); + cancel_work_sync(&rtlpriv->works.lps_change_work); + + spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); + while (ppsc->rfchange_inprogress) { + spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); + if (rf_timeout > 100) { + spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); + break; + } + mdelay(1); + rf_timeout++; + spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); + } + ppsc->rfchange_inprogress = true; + spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); + + rtlpriv->cfg->ops->hw_disable(hw); + /* some things are not needed if firmware not available */ + if (!rtlpriv->max_fw_size) + return; + rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF); + + spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags); + ppsc->rfchange_inprogress = false; + spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags); + + rtl_pci_enable_aspm(hw); +} + +static bool _rtl_pci_find_adapter(struct pci_dev *pdev, + struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); + struct pci_dev *bridge_pdev = pdev->bus->self; + u16 venderid; + u16 deviceid; + u8 revisionid; + u16 irqline; + u8 tmp; + + pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN; + venderid = pdev->vendor; + deviceid = pdev->device; + pci_read_config_byte(pdev, 0x8, &revisionid); + pci_read_config_word(pdev, 0x3C, &irqline); + + /* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses + * r8192e_pci, and RTL8192SE, which uses this driver. If the + * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then + * the correct driver is r8192e_pci, thus this routine should + * return false. + */ + if (deviceid == RTL_PCI_8192SE_DID && + revisionid == RTL_PCI_REVISION_ID_8192PCIE) + return false; + + if (deviceid == RTL_PCI_8192_DID || + deviceid == RTL_PCI_0044_DID || + deviceid == RTL_PCI_0047_DID || + deviceid == RTL_PCI_8192SE_DID || + deviceid == RTL_PCI_8174_DID || + deviceid == RTL_PCI_8173_DID || + deviceid == RTL_PCI_8172_DID || + deviceid == RTL_PCI_8171_DID) { + switch (revisionid) { + case RTL_PCI_REVISION_ID_8192PCIE: + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "8192 PCI-E is found - vid/did=%x/%x\n", + venderid, deviceid); + rtlhal->hw_type = HARDWARE_TYPE_RTL8192E; + return false; + case RTL_PCI_REVISION_ID_8192SE: + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "8192SE is found - vid/did=%x/%x\n", + venderid, deviceid); + rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE; + break; + default: + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "Err: Unknown device - vid/did=%x/%x\n", + venderid, deviceid); + rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE; + break; + } + } else if (deviceid == RTL_PCI_8723AE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "8723AE PCI-E is found - vid/did=%x/%x\n", + venderid, deviceid); + } else if (deviceid == RTL_PCI_8192CET_DID || + deviceid == RTL_PCI_8192CE_DID || + deviceid == RTL_PCI_8191CE_DID || + deviceid == RTL_PCI_8188CE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "8192C PCI-E is found - vid/did=%x/%x\n", + venderid, deviceid); + } else if (deviceid == RTL_PCI_8192DE_DID || + deviceid == RTL_PCI_8192DE_DID2) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "8192D PCI-E is found - vid/did=%x/%x\n", + venderid, deviceid); + } else if (deviceid == RTL_PCI_8188EE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8188EE\n"); + } else if (deviceid == RTL_PCI_8723BE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8723BE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8723BE\n"); + } else if (deviceid == RTL_PCI_8192EE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8192EE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8192EE\n"); + } else if (deviceid == RTL_PCI_8821AE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8821AE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8821AE\n"); + } else if (deviceid == RTL_PCI_8812AE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8812AE; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8812AE\n"); + } else if (deviceid == RTL_PCI_8822BE_DID) { + rtlhal->hw_type = HARDWARE_TYPE_RTL8822BE; + rtlhal->bandset = BAND_ON_BOTH; + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find adapter, Hardware type is 8822BE\n"); + } else { + rtl_dbg(rtlpriv, COMP_ERR, DBG_WARNING, + "Err: Unknown device - vid/did=%x/%x\n", + venderid, deviceid); + + rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE; + } + + if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) { + if (revisionid == 0 || revisionid == 1) { + if (revisionid == 0) { + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find 92DE MAC0\n"); + rtlhal->interfaceindex = 0; + } else if (revisionid == 1) { + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Find 92DE MAC1\n"); + rtlhal->interfaceindex = 1; + } + } else { + rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, + "Unknown device - VendorID/DeviceID=%x/%x, Revision=%x\n", + venderid, deviceid, revisionid); + rtlhal->interfaceindex = 0; + } + } + + switch (rtlhal->hw_type) { + case HARDWARE_TYPE_RTL8192EE: + case HARDWARE_TYPE_RTL8822BE: + /* use new trx flow */ + rtlpriv->use_new_trx_flow = true; + break; + + default: + rtlpriv->use_new_trx_flow = false; + break; + } + + /*find bus info */ + pcipriv->ndis_adapter.busnumber = pdev->bus->number; + pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn); + pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn); + + /*find bridge info */ + pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN; + /* some ARM have no bridge_pdev and will crash here + * so we should check if bridge_pdev is NULL + */ + if (bridge_pdev) { + /*find bridge info if available */ + pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor; + for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) { + if (bridge_pdev->vendor == pcibridge_vendors[tmp]) { + pcipriv->ndis_adapter.pcibridge_vendor = tmp; + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "Pci Bridge Vendor is found index: %d\n", + tmp); + break; + } + } + } + + if (pcipriv->ndis_adapter.pcibridge_vendor != + PCI_BRIDGE_VENDOR_UNKNOWN) { + pcipriv->ndis_adapter.pcibridge_busnum = + bridge_pdev->bus->number; + pcipriv->ndis_adapter.pcibridge_devnum = + PCI_SLOT(bridge_pdev->devfn); + pcipriv->ndis_adapter.pcibridge_funcnum = + PCI_FUNC(bridge_pdev->devfn); + + if (pcipriv->ndis_adapter.pcibridge_vendor == + PCI_BRIDGE_VENDOR_AMD) { + pcipriv->ndis_adapter.amd_l1_patch = + rtl_pci_get_amd_l1_patch(hw); + } + } + + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "pcidev busnumber:devnumber:funcnumber:vendor:link_ctl %d:%d:%d:%x:%x\n", + pcipriv->ndis_adapter.busnumber, + pcipriv->ndis_adapter.devnumber, + pcipriv->ndis_adapter.funcnumber, + pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg); + + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "pci_bridge busnumber:devnumber:funcnumber:vendor:amd %d:%d:%d:%x:%x\n", + pcipriv->ndis_adapter.pcibridge_busnum, + pcipriv->ndis_adapter.pcibridge_devnum, + pcipriv->ndis_adapter.pcibridge_funcnum, + pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor], + pcipriv->ndis_adapter.amd_l1_patch); + + rtl_pci_parse_configuration(pdev, hw); + list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list); + + return true; +} + +static int rtl_pci_intr_mode_msi(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); + int ret; + + ret = pci_enable_msi(rtlpci->pdev); + if (ret < 0) + return ret; + + ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt, + IRQF_SHARED, KBUILD_MODNAME, hw); + if (ret < 0) { + pci_disable_msi(rtlpci->pdev); + return ret; + } + + rtlpci->using_msi = true; + + rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG, + "MSI Interrupt Mode!\n"); + return 0; +} + +static int rtl_pci_intr_mode_legacy(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); + int ret; + + ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt, + IRQF_SHARED, KBUILD_MODNAME, hw); + if (ret < 0) + return ret; + + rtlpci->using_msi = false; + rtl_dbg(rtlpriv, COMP_INIT | COMP_INTR, DBG_DMESG, + "Pin-based Interrupt Mode!\n"); + return 0; +} + +static int rtl_pci_intr_mode_decide(struct ieee80211_hw *hw) +{ + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); + int ret; + + if (rtlpci->msi_support) { + ret = rtl_pci_intr_mode_msi(hw); + if (ret < 0) + ret = rtl_pci_intr_mode_legacy(hw); + } else { + ret = rtl_pci_intr_mode_legacy(hw); + } + return ret; +} + +static void platform_enable_dma64(struct pci_dev *pdev, bool dma64) +{ + u8 value; + + pci_read_config_byte(pdev, 0x719, &value); + + /* 0x719 Bit5 is DMA64 bit fetch. */ + if (dma64) + value |= BIT(5); + else + value &= ~BIT(5); + + pci_write_config_byte(pdev, 0x719, value); +} + +int rtl_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct ieee80211_hw *hw = NULL; + + struct rtl_priv *rtlpriv = NULL; + struct rtl_pci_priv *pcipriv = NULL; + struct rtl_pci *rtlpci; + unsigned long pmem_start, pmem_len, pmem_flags; + int err; + + err = pci_enable_device(pdev); + if (err) { + WARN_ONCE(true, "%s : Cannot enable new PCI device\n", + pci_name(pdev)); + return err; + } + + if (((struct rtl_hal_cfg *)id->driver_data)->mod_params->dma64 && + !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { + if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { + WARN_ONCE(true, + "Unable to obtain 64bit DMA for consistent allocations\n"); + err = -ENOMEM; + goto fail1; + } + + platform_enable_dma64(pdev, true); + } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { + if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) { + WARN_ONCE(true, + "rtlwifi: Unable to obtain 32bit DMA for consistent allocations\n"); + err = -ENOMEM; + goto fail1; + } + + platform_enable_dma64(pdev, false); + } + + pci_set_master(pdev); + + hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) + + sizeof(struct rtl_priv), &rtl_ops); + if (!hw) { + WARN_ONCE(true, + "%s : ieee80211 alloc failed\n", pci_name(pdev)); + err = -ENOMEM; + goto fail1; + } + + SET_IEEE80211_DEV(hw, &pdev->dev); + pci_set_drvdata(pdev, hw); + + rtlpriv = hw->priv; + rtlpriv->hw = hw; + pcipriv = (void *)rtlpriv->priv; + pcipriv->dev.pdev = pdev; + init_completion(&rtlpriv->firmware_loading_complete); + /*proximity init here*/ + rtlpriv->proximity.proxim_on = false; + + pcipriv = (void *)rtlpriv->priv; + pcipriv->dev.pdev = pdev; + + /* init cfg & intf_ops */ + rtlpriv->rtlhal.interface = INTF_PCI; + rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data); + rtlpriv->intf_ops = &rtl_pci_ops; + rtlpriv->glb_var = &rtl_global_var; + rtl_efuse_ops_init(hw); + + /* MEM map */ + err = pci_request_regions(pdev, KBUILD_MODNAME); + if (err) { + WARN_ONCE(true, "rtlwifi: Can't obtain PCI resources\n"); + goto fail1; + } + + pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id); + pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id); + pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id); + + /*shared mem start */ + rtlpriv->io.pci_mem_start = + (unsigned long)pci_iomap(pdev, + rtlpriv->cfg->bar_id, pmem_len); + if (rtlpriv->io.pci_mem_start == 0) { + WARN_ONCE(true, "rtlwifi: Can't map PCI mem\n"); + err = -ENOMEM; + goto fail2; + } + + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "mem mapped space: start: 0x%08lx len:%08lx flags:%08lx, after map:0x%08lx\n", + pmem_start, pmem_len, pmem_flags, + rtlpriv->io.pci_mem_start); + + /* Disable Clk Request */ + pci_write_config_byte(pdev, 0x81, 0); + /* leave D3 mode */ + pci_write_config_byte(pdev, 0x44, 0); + pci_write_config_byte(pdev, 0x04, 0x06); + pci_write_config_byte(pdev, 0x04, 0x07); + + /* find adapter */ + if (!_rtl_pci_find_adapter(pdev, hw)) { + err = -ENODEV; + goto fail2; + } + + /* Init IO handler */ + _rtl_pci_io_handler_init(&pdev->dev, hw); + + /*like read eeprom and so on */ + rtlpriv->cfg->ops->read_eeprom_info(hw); + + if (rtlpriv->cfg->ops->init_sw_vars(hw)) { + pr_err("Can't init_sw_vars\n"); + err = -ENODEV; + goto fail3; + } + rtlpriv->cfg->ops->init_sw_leds(hw); + + /*aspm */ + rtl_pci_init_aspm(hw); + + /* Init mac80211 sw */ + err = rtl_init_core(hw); + if (err) { + pr_err("Can't allocate sw for mac80211\n"); + goto fail3; + } + + /* Init PCI sw */ + err = rtl_pci_init(hw, pdev); + if (err) { + pr_err("Failed to init PCI\n"); + goto fail3; + } + + err = ieee80211_register_hw(hw); + if (err) { + pr_err("Can't register mac80211 hw.\n"); + err = -ENODEV; + goto fail3; + } + rtlpriv->mac80211.mac80211_registered = 1; + + /* add for debug */ + rtl_debug_add_one(hw); + + /*init rfkill */ + rtl_init_rfkill(hw); /* Init PCI sw */ + + rtlpci = rtl_pcidev(pcipriv); + err = rtl_pci_intr_mode_decide(hw); + if (err) { + rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG, + "%s: failed to register IRQ handler\n", + wiphy_name(hw->wiphy)); + goto fail3; + } + rtlpci->irq_alloc = 1; + + set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status); + return 0; + +fail3: + pci_set_drvdata(pdev, NULL); + rtl_deinit_core(hw); + +fail2: + if (rtlpriv->io.pci_mem_start != 0) + pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start); + + pci_release_regions(pdev); + complete(&rtlpriv->firmware_loading_complete); + +fail1: + if (hw) + ieee80211_free_hw(hw); + pci_disable_device(pdev); + + return err; +} +EXPORT_SYMBOL(rtl_pci_probe); + +void rtl_pci_disconnect(struct pci_dev *pdev) +{ + struct ieee80211_hw *hw = pci_get_drvdata(pdev); + struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw); + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_pci *rtlpci = rtl_pcidev(pcipriv); + struct rtl_mac *rtlmac = rtl_mac(rtlpriv); + + /* just in case driver is removed before firmware callback */ + wait_for_completion(&rtlpriv->firmware_loading_complete); + clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status); + + /* remove form debug */ + rtl_debug_remove_one(hw); + + /*ieee80211_unregister_hw will call ops_stop */ + if (rtlmac->mac80211_registered == 1) { + ieee80211_unregister_hw(hw); + rtlmac->mac80211_registered = 0; + } else { + rtl_deinit_deferred_work(hw, false); + rtlpriv->intf_ops->adapter_stop(hw); + } + rtlpriv->cfg->ops->disable_interrupt(hw); + + /*deinit rfkill */ + rtl_deinit_rfkill(hw); + + rtl_pci_deinit(hw); + rtl_deinit_core(hw); + rtlpriv->cfg->ops->deinit_sw_vars(hw); + + if (rtlpci->irq_alloc) { + free_irq(rtlpci->pdev->irq, hw); + rtlpci->irq_alloc = 0; + } + + if (rtlpci->using_msi) + pci_disable_msi(rtlpci->pdev); + + list_del(&rtlpriv->list); + if (rtlpriv->io.pci_mem_start != 0) { + pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start); + pci_release_regions(pdev); + } + + pci_disable_device(pdev); + + rtl_pci_disable_aspm(hw); + + pci_set_drvdata(pdev, NULL); + + ieee80211_free_hw(hw); +} +EXPORT_SYMBOL(rtl_pci_disconnect); + +#ifdef CONFIG_PM_SLEEP +/*************************************** + * kernel pci power state define: + * PCI_D0 ((pci_power_t __force) 0) + * PCI_D1 ((pci_power_t __force) 1) + * PCI_D2 ((pci_power_t __force) 2) + * PCI_D3hot ((pci_power_t __force) 3) + * PCI_D3cold ((pci_power_t __force) 4) + * PCI_UNKNOWN ((pci_power_t __force) 5) + + * This function is called when system + * goes into suspend state mac80211 will + * call rtl_mac_stop() from the mac80211 + * suspend function first, So there is + * no need to call hw_disable here. + ****************************************/ +int rtl_pci_suspend(struct device *dev) +{ + struct ieee80211_hw *hw = dev_get_drvdata(dev); + struct rtl_priv *rtlpriv = rtl_priv(hw); + + rtlpriv->cfg->ops->hw_suspend(hw); + rtl_deinit_rfkill(hw); + + return 0; +} +EXPORT_SYMBOL(rtl_pci_suspend); + +int rtl_pci_resume(struct device *dev) +{ + struct ieee80211_hw *hw = dev_get_drvdata(dev); + struct rtl_priv *rtlpriv = rtl_priv(hw); + + rtlpriv->cfg->ops->hw_resume(hw); + rtl_init_rfkill(hw); + return 0; +} +EXPORT_SYMBOL(rtl_pci_resume); +#endif /* CONFIG_PM_SLEEP */ + +const struct rtl_intf_ops rtl_pci_ops = { + .read_efuse_byte = read_efuse_byte, + .adapter_start = rtl_pci_start, + .adapter_stop = rtl_pci_stop, + .check_buddy_priv = rtl_pci_check_buddy_priv, + .adapter_tx = rtl_pci_tx, + .flush = rtl_pci_flush, + .reset_trx_ring = rtl_pci_reset_trx_ring, + .waitq_insert = rtl_pci_tx_chk_waitq_insert, + + .disable_aspm = rtl_pci_disable_aspm, + .enable_aspm = rtl_pci_enable_aspm, +}; |