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-rw-r--r--package/mac80211/patches/540-b43-Add-fw-capabilities.patch198
1 files changed, 198 insertions, 0 deletions
diff --git a/package/mac80211/patches/540-b43-Add-fw-capabilities.patch b/package/mac80211/patches/540-b43-Add-fw-capabilities.patch
new file mode 100644
index 0000000000..c2320c6977
--- /dev/null
+++ b/package/mac80211/patches/540-b43-Add-fw-capabilities.patch
@@ -0,0 +1,198 @@
+Completely untested patch to implement firmware capabilities
+and automagic QoS-disabling.
+
+
+--- a/drivers/net/wireless/b43/b43.h
++++ b/drivers/net/wireless/b43/b43.h
+@@ -163,6 +163,7 @@ enum {
+ #define B43_SHM_SH_WLCOREREV 0x0016 /* 802.11 core revision */
+ #define B43_SHM_SH_PCTLWDPOS 0x0008
+ #define B43_SHM_SH_RXPADOFF 0x0034 /* RX Padding data offset (PIO only) */
++#define B43_SHM_SH_FWCAPA 0x0042 /* Firmware capabilities (Opensource firmware only) */
+ #define B43_SHM_SH_PHYVER 0x0050 /* PHY version */
+ #define B43_SHM_SH_PHYTYPE 0x0052 /* PHY type */
+ #define B43_SHM_SH_ANTSWAP 0x005C /* Antenna swap threshold */
+@@ -297,6 +298,10 @@ enum {
+ #define B43_HF_MLADVW 0x001000000000ULL /* N PHY ML ADV workaround (rev >= 13 only) */
+ #define B43_HF_PR45960W 0x080000000000ULL /* PR 45960 workaround (rev >= 13 only) */
+
++/* Firmware capabilities field in SHM (Opensource firmware only) */
++#define B43_FWCAPA_HWCRYPTO 0x0001
++#define B43_FWCAPA_QOS 0x0002
++
+ /* MacFilter offsets. */
+ #define B43_MACFILTER_SELF 0x0000
+ #define B43_MACFILTER_BSSID 0x0003
+@@ -596,6 +601,13 @@ struct b43_wl {
+ /* Pointer to the ieee80211 hardware data structure */
+ struct ieee80211_hw *hw;
+
++ /* The number of queues that were registered with the mac80211 subsystem
++ * initially. This is a backup copy of hw->queues in case hw->queues has
++ * to be dynamically lowered at runtime (Firmware does not support QoS).
++ * hw->queues has to be restored to the original value before unregistering
++ * from the mac80211 subsystem. */
++ u16 mac80211_initially_registered_queues;
++
+ struct mutex mutex;
+ spinlock_t irq_lock;
+ /* R/W lock for data transmission.
+@@ -752,6 +764,8 @@ struct b43_wldev {
+ bool dfq_valid; /* Directed frame queue valid (IBSS PS mode, ATIM) */
+ bool radio_hw_enable; /* saved state of radio hardware enabled state */
+ bool suspend_in_progress; /* TRUE, if we are in a suspend/resume cycle */
++ bool qos_enabled; /* TRUE, if QoS is used. */
++ bool hwcrypto_enabled; /* TRUE, if HW crypto acceleration is enabled. */
+
+ /* PHY/Radio device. */
+ struct b43_phy phy;
+--- a/drivers/net/wireless/b43/dma.c
++++ b/drivers/net/wireless/b43/dma.c
+@@ -1285,7 +1285,7 @@ static struct b43_dmaring *select_ring_b
+ {
+ struct b43_dmaring *ring;
+
+- if (b43_modparam_qos) {
++ if (dev->qos_enabled) {
+ /* 0 = highest priority */
+ switch (queue_prio) {
+ default:
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -80,8 +80,8 @@ static int modparam_nohwcrypt;
+ module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
+ MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
+
+-int b43_modparam_qos = 1;
+-module_param_named(qos, b43_modparam_qos, int, 0444);
++static int modparam_qos = 1;
++module_param_named(qos, modparam_qos, int, 0444);
+ MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
+
+ static int modparam_btcoex = 1;
+@@ -538,6 +538,13 @@ void b43_hf_write(struct b43_wldev *dev,
+ b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
+ }
+
++/* Read the firmware capabilities bitmask (Opensource firmware only) */
++static u16 b43_fwcapa_read(struct b43_wldev *dev)
++{
++ B43_WARN_ON(!dev->fw.opensource);
++ return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
++}
++
+ void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
+ {
+ u32 low, high;
+@@ -2307,12 +2314,34 @@ static int b43_upload_microcode(struct b
+ dev->fw.patch = fwpatch;
+ dev->fw.opensource = (fwdate == 0xFFFF);
+
++ /* Default to use-all-queues. */
++ dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
++ dev->qos_enabled = !!modparam_qos;
++ /* Default to firmware/hardware crypto acceleration. */
++ dev->hwcrypto_enabled = 1;
++
+ if (dev->fw.opensource) {
++ u16 fwcapa;
++
+ /* Patchlevel info is encoded in the "time" field. */
+ dev->fw.patch = fwtime;
+- b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
+- dev->fw.rev, dev->fw.patch,
+- dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
++ b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
++ dev->fw.rev, dev->fw.patch);
++
++ fwcapa = b43_fwcapa_read(dev);
++ if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
++ b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
++ /* Disable hardware crypto and fall back to software crypto. */
++ dev->hwcrypto_enabled = 0;
++ }
++ if (!(fwcapa & B43_FWCAPA_QOS)) {
++ b43info(dev->wl, "QoS not supported by firmware\n");
++ /* Disable QoS. Tweak hw->queues to 1. It will be restored before
++ * ieee80211_unregister to make sure the networking core can
++ * properly free possible resources. */
++ dev->wl->hw->queues = 1;
++ dev->qos_enabled = 0;
++ }
+ } else {
+ b43info(dev->wl, "Loading firmware version %u.%u "
+ "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
+@@ -3629,7 +3658,7 @@ static int b43_op_set_key(struct ieee802
+ if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
+ goto out_unlock;
+
+- if (dev->fw.pcm_request_failed) {
++ if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
+ /* We don't have firmware for the crypto engine.
+ * Must use software-crypto. */
+ err = -EOPNOTSUPP;
+@@ -4737,6 +4766,7 @@ static int b43_wireless_init(struct ssb_
+ b43err(NULL, "Could not allocate ieee80211 device\n");
+ goto out;
+ }
++ wl = hw_to_b43_wl(hw);
+
+ /* fill hw info */
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+@@ -4750,7 +4780,8 @@ static int b43_wireless_init(struct ssb_
+ BIT(NL80211_IFTYPE_WDS) |
+ BIT(NL80211_IFTYPE_ADHOC);
+
+- hw->queues = b43_modparam_qos ? 4 : 1;
++ hw->queues = modparam_qos ? 4 : 1;
++ wl->mac80211_initially_registered_queues = hw->queues;
+ hw->max_rates = 2;
+ SET_IEEE80211_DEV(hw, dev->dev);
+ if (is_valid_ether_addr(sprom->et1mac))
+@@ -4758,9 +4789,7 @@ static int b43_wireless_init(struct ssb_
+ else
+ SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
+
+- /* Get and initialize struct b43_wl */
+- wl = hw_to_b43_wl(hw);
+- memset(wl, 0, sizeof(*wl));
++ /* Initialize struct b43_wl */
+ wl->hw = hw;
+ spin_lock_init(&wl->irq_lock);
+ rwlock_init(&wl->tx_lock);
+@@ -4826,8 +4855,13 @@ static void b43_remove(struct ssb_device
+ cancel_work_sync(&wldev->restart_work);
+
+ B43_WARN_ON(!wl);
+- if (wl->current_dev == wldev)
++ if (wl->current_dev == wldev) {
++ /* Restore the queues count before unregistering, because firmware detect
++ * might have modified it. Restoring is important, so the networking
++ * stack can properly free resources. */
++ wl->hw->queues = wl->mac80211_initially_registered_queues;
+ ieee80211_unregister_hw(wl->hw);
++ }
+
+ b43_one_core_detach(dev);
+
+--- a/drivers/net/wireless/b43/main.h
++++ b/drivers/net/wireless/b43/main.h
+@@ -39,7 +39,6 @@
+ #define PAD_BYTES(nr_bytes) P4D_BYTES( __LINE__ , (nr_bytes))
+
+
+-extern int b43_modparam_qos;
+ extern int b43_modparam_verbose;
+
+ /* Logmessage verbosity levels. Update the b43_modparam_verbose helptext, if
+--- a/drivers/net/wireless/b43/pio.c
++++ b/drivers/net/wireless/b43/pio.c
+@@ -313,7 +313,7 @@ static struct b43_pio_txqueue *select_qu
+ {
+ struct b43_pio_txqueue *q;
+
+- if (b43_modparam_qos) {
++ if (dev->qos_enabled) {
+ /* 0 = highest priority */
+ switch (queue_prio) {
+ default: