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mwl8k: Stop bsses before hw specific commands

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For the commands, that might change the hw characteristics
of the PHY device, stop the running bsses and resume them
once command is complete.

Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Yogesh Ashok Powar 2013-01-25 16:17:32 +05:30 committed by John W. Linville
parent 73e4dbe4ca
commit e882efc96d
1 changed files with 70 additions and 8 deletions
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78
drivers/net/wireless/mwl8k.c
View file

@ -285,6 +285,9 @@ struct mwl8k_priv {
char *fw_pref;
char *fw_alt;
struct completion firmware_loading_complete;
/* bitmap of running BSSes */
u32 running_bsses;
};
#define MAX_WEP_KEY_LEN 13
@ -2156,6 +2159,8 @@ static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
}
}
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
u32 bitmap);
/*
* Command processing.
@ -2174,6 +2179,34 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
int rc;
unsigned long timeout = 0;
u8 buf[32];
u32 bitmap = 0;
wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
/* Before posting firmware commands that could change the hardware
* characteristics, make sure that all BSSes are stopped temporary.
* Enable these stopped BSSes after completion of the commands
*/
rc = mwl8k_fw_lock(hw);
if (rc)
return rc;
if (priv->ap_fw && priv->running_bsses) {
switch (le16_to_cpu(cmd->code)) {
case MWL8K_CMD_SET_RF_CHANNEL:
case MWL8K_CMD_RADIO_CONTROL:
case MWL8K_CMD_RF_TX_POWER:
case MWL8K_CMD_TX_POWER:
case MWL8K_CMD_RF_ANTENNA:
case MWL8K_CMD_RTS_THRESHOLD:
case MWL8K_CMD_MIMO_CONFIG:
bitmap = priv->running_bsses;
mwl8k_enable_bsses(hw, false, bitmap);
break;
}
}
cmd->result = (__force __le16) 0xffff;
dma_size = le16_to_cpu(cmd->length);
@ -2182,13 +2215,6 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
if (pci_dma_mapping_error(priv->pdev, dma_addr))
return -ENOMEM;
rc = mwl8k_fw_lock(hw);
if (rc) {
pci_unmap_single(priv->pdev, dma_addr, dma_size,
PCI_DMA_BIDIRECTIONAL);
return rc;
}
priv->hostcmd_wait = &cmd_wait;
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
iowrite32(MWL8K_H2A_INT_DOORBELL,
@ -2201,7 +2227,6 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
priv->hostcmd_wait = NULL;
mwl8k_fw_unlock(hw);
pci_unmap_single(priv->pdev, dma_addr, dma_size,
PCI_DMA_BIDIRECTIONAL);
@ -2228,6 +2253,11 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
ms);
}
if (bitmap)
mwl8k_enable_bsses(hw, true, bitmap);
mwl8k_fw_unlock(hw);
return rc;
}
@ -3680,8 +3710,16 @@ static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int enable)
{
struct mwl8k_cmd_bss_start *cmd;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct mwl8k_priv *priv = hw->priv;
int rc;
if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
return 0;
if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
return 0;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
@ -3693,9 +3731,31 @@ static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
if (!rc) {
if (enable)
priv->running_bsses |= (1 << mwl8k_vif->macid);
else
priv->running_bsses &= ~(1 << mwl8k_vif->macid);
}
return rc;
}
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif, *tmp_vif;
struct ieee80211_vif *vif;
list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
vif = mwl8k_vif->vif;
if (!(bitmap & (1 << mwl8k_vif->macid)))
continue;
if (vif->type == NL80211_IFTYPE_AP)
mwl8k_cmd_bss_start(hw, vif, enable);
}
}
/*
* CMD_BASTREAM.
*/
@ -5948,6 +6008,8 @@ static int mwl8k_probe(struct pci_dev *pdev,
priv->hw_restart_in_progress = false;
priv->running_bsses = 0;
return rc;
err_stop_firmware: