diff options
author | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2011-05-30 17:29:37 (GMT) |
---|---|---|
committer | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2011-06-11 14:08:12 (GMT) |
commit | 49b72100165e3b2046be15a8e4f766f5169e708d (patch) | |
tree | c609da8bdee7460fc2001654f9e3a93259b94a9e /drivers/net/wireless/iwlwifi | |
parent | 7101f4043cdaa5dc2bf8974313744246f3955de7 (diff) | |
download | linux-fsl-qoriq-49b72100165e3b2046be15a8e4f766f5169e708d.tar.xz |
iwlagn: usersapce application decide the size of trace buffer
For testmode trace function, allow userspace application to request the
size of trace buffer.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 2 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sv-open.c | 28 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-testmode.h | 7 |
3 files changed, 29 insertions, 8 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index c8de236..a7d2159 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1170,6 +1170,8 @@ enum iwl_scan_type { #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL struct iwl_testmode_trace { + u32 buff_size; + u32 total_size; u8 *cpu_addr; u8 *trace_addr; dma_addr_t dma_addr; diff --git a/drivers/net/wireless/iwlwifi/iwl-sv-open.c b/drivers/net/wireless/iwlwifi/iwl-sv-open.c index 69b7e6b..135c1b5 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sv-open.c +++ b/drivers/net/wireless/iwlwifi/iwl-sv-open.c @@ -69,7 +69,6 @@ #include <net/mac80211.h> #include <net/netlink.h> - #include "iwl-dev.h" #include "iwl-core.h" #include "iwl-debug.h" @@ -102,8 +101,10 @@ struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, }, [IWL_TM_ATTR_TRACE_DATA] = { .type = NLA_UNSPEC, }, + [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, }, [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, + }; /* @@ -185,13 +186,15 @@ static void iwl_trace_cleanup(struct iwl_priv *priv) if (priv->testmode_trace.cpu_addr && priv->testmode_trace.dma_addr) dma_free_coherent(dev, - TRACE_TOTAL_SIZE, + priv->testmode_trace.total_size, priv->testmode_trace.cpu_addr, priv->testmode_trace.dma_addr); priv->testmode_trace.trace_enabled = false; priv->testmode_trace.cpu_addr = NULL; priv->testmode_trace.trace_addr = NULL; priv->testmode_trace.dma_addr = 0; + priv->testmode_trace.buff_size = 0; + priv->testmode_trace.total_size = 0; } } @@ -489,9 +492,22 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) if (priv->testmode_trace.trace_enabled) return -EBUSY; + if (!tb[IWL_TM_ATTR_TRACE_SIZE]) + priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF; + else + priv->testmode_trace.buff_size = + nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); + if (!priv->testmode_trace.buff_size) + return -EINVAL; + if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN || + priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX) + return -EINVAL; + + priv->testmode_trace.total_size = + priv->testmode_trace.buff_size + TRACE_BUFF_PADD; priv->testmode_trace.cpu_addr = dma_alloc_coherent(dev, - TRACE_TOTAL_SIZE, + priv->testmode_trace.total_size, &priv->testmode_trace.dma_addr, GFP_KERNEL); if (!priv->testmode_trace.cpu_addr) @@ -500,7 +516,7 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN( priv->testmode_trace.cpu_addr, 0x100); memset(priv->testmode_trace.trace_addr, 0x03B, - TRACE_BUFF_SIZE); + priv->testmode_trace.buff_size); skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, sizeof(priv->testmode_trace.dma_addr) + 20); if (!skb) { @@ -528,14 +544,14 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) if (priv->testmode_trace.trace_enabled && priv->testmode_trace.trace_addr) { skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, - 20 + TRACE_BUFF_SIZE); + 20 + priv->testmode_trace.buff_size); if (skb == NULL) { IWL_DEBUG_INFO(priv, "Error allocating memory\n"); return -ENOMEM; } NLA_PUT(skb, IWL_TM_ATTR_TRACE_DATA, - TRACE_BUFF_SIZE, + priv->testmode_trace.buff_size, priv->testmode_trace.trace_addr); status = cfg80211_testmode_reply(skb); if (status < 0) { diff --git a/drivers/net/wireless/iwlwifi/iwl-testmode.h b/drivers/net/wireless/iwlwifi/iwl-testmode.h index a88085e..f3f406e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-testmode.h +++ b/drivers/net/wireless/iwlwifi/iwl-testmode.h @@ -167,6 +167,7 @@ enum iwl_tm_attr_t { */ IWL_TM_ATTR_TRACE_ADDR, IWL_TM_ATTR_TRACE_DATA, + IWL_TM_ATTR_TRACE_SIZE, /* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_FIXRATE_REQ, * The mandatory fields are: @@ -178,8 +179,10 @@ enum iwl_tm_attr_t { }; /* uCode trace buffer */ -#define TRACE_BUFF_SIZE 0x20000 +#define TRACE_BUFF_SIZE_MAX 0x200000 +#define TRACE_BUFF_SIZE_MIN 0x20000 +#define TRACE_BUFF_SIZE_DEF TRACE_BUFF_SIZE_MIN + #define TRACE_BUFF_PADD 0x2000 -#define TRACE_TOTAL_SIZE (TRACE_BUFF_SIZE + TRACE_BUFF_PADD) #endif |