Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/linville/wireless-next-2.6 into for-davem

Documentation/networking/nfc.txt

@@ -0,0 +1,128 @@
+Linux NFC subsystem
+===================
+
+The Near Field Communication (NFC) subsystem is required to standardize the
+NFC device drivers development and to create an unified userspace interface.
+
+This document covers the architecture overview, the device driver interface
+description and the userspace interface description.
+
+Architecture overview
+---------------------
+
+The NFC subsystem is responsible for:
+      - NFC adapters management;
+      - Polling for targets;
+      - Low-level data exchange;
+
+The subsystem is divided in some parts. The 'core' is responsible for
+providing the device driver interface. On the other side, it is also
+responsible for providing an interface to control operations and low-level
+data exchange.
+
+The control operations are available to userspace via generic netlink.
+
+The low-level data exchange interface is provided by the new socket family
+PF_NFC. The NFC_SOCKPROTO_RAW performs raw communication with NFC targets.
+
+
+             +--------------------------------------+
+             |              USER SPACE              |
+             +--------------------------------------+
+                 ^                       ^
+                 | low-level             | control
+                 | data exchange         | operations
+                 |                       |
+                 |                       v
+                 |                  +-----------+
+                 | AF_NFC           |  netlink  |
+                 | socket           +-----------+
+                 | raw                   ^
+                 |                       |
+                 v                       v
+             +---------+            +-----------+
+             | rawsock | <--------> |   core    |
+             +---------+            +-----------+
+                                         ^
+                                         |
+                                         v
+                                    +-----------+
+                                    |  driver   |
+                                    +-----------+
+
+Device Driver Interface
+-----------------------
+
+When registering on the NFC subsystem, the device driver must inform the core
+of the set of supported NFC protocols and the set of ops callbacks. The ops
+callbacks that must be implemented are the following:
+
+* start_poll - setup the device to poll for targets
+* stop_poll - stop on progress polling operation
+* activate_target - select and initialize one of the targets found
+* deactivate_target - deselect and deinitialize the selected target
+* data_exchange - send data and receive the response (transceive operation)
+
+Userspace interface
+--------------------
+
+The userspace interface is divided in control operations and low-level data
+exchange operation.
+
+CONTROL OPERATIONS:
+
+Generic netlink is used to implement the interface to the control operations.
+The operations are composed by commands and events, all listed below:
+
+* NFC_CMD_GET_DEVICE - get specific device info or dump the device list
+* NFC_CMD_START_POLL - setup a specific device to polling for targets
+* NFC_CMD_STOP_POLL - stop the polling operation in a specific device
+* NFC_CMD_GET_TARGET - dump the list of targets found by a specific device
+
+* NFC_EVENT_DEVICE_ADDED - reports an NFC device addition
+* NFC_EVENT_DEVICE_REMOVED - reports an NFC device removal
+* NFC_EVENT_TARGETS_FOUND - reports START_POLL results when 1 or more targets
+are found
+
+The user must call START_POLL to poll for NFC targets, passing the desired NFC
+protocols through NFC_ATTR_PROTOCOLS attribute. The device remains in polling
+state until it finds any target. However, the user can stop the polling
+operation by calling STOP_POLL command. In this case, it will be checked if
+the requester of STOP_POLL is the same of START_POLL.
+
+If the polling operation finds one or more targets, the event TARGETS_FOUND is
+sent (including the device id). The user must call GET_TARGET to get the list of
+all targets found by such device. Each reply message has target attributes with
+relevant information such as the supported NFC protocols.
+
+All polling operations requested through one netlink socket are stopped when
+it's closed.
+
+LOW-LEVEL DATA EXCHANGE:
+
+The userspace must use PF_NFC sockets to perform any data communication with
+targets. All NFC sockets use AF_NFC:
+
+struct sockaddr_nfc {
+       sa_family_t sa_family;
+       __u32 dev_idx;
+       __u32 target_idx;
+       __u32 nfc_protocol;
+};
+
+To establish a connection with one target, the user must create an
+NFC_SOCKPROTO_RAW socket and call the 'connect' syscall with the sockaddr_nfc
+struct correctly filled. All information comes from NFC_EVENT_TARGETS_FOUND
+netlink event. As a target can support more than one NFC protocol, the user
+must inform which protocol it wants to use.
+
+Internally, 'connect' will result in an activate_target call to the driver.
+When the socket is closed, the target is deactivated.
+
+The data format exchanged through the sockets is NFC protocol dependent. For
+instance, when communicating with MIFARE tags, the data exchanged are MIFARE
+commands and their responses.
+
+The first received package is the response to the first sent package and so
+on. In order to allow valid "empty" responses, every data received has a NULL
+header of 1 byte.

drivers/Kconfig

@@ -94,8 +94,6 @@ source "drivers/memstick/Kconfig"
 
 source "drivers/leds/Kconfig"
 
-source "drivers/nfc/Kconfig"
-
 source "drivers/accessibility/Kconfig"
 
 source "drivers/infiniband/Kconfig"

drivers/Makefile

@@ -122,3 +122,4 @@ obj-y				+= ieee802154/
 obj-y				+= clk/
 
 obj-$(CONFIG_HWSPINLOCK)	+= hwspinlock/
+obj-$(CONFIG_NFC)		+= nfc/

drivers/bcma/Kconfig

@@ -27,6 +27,12 @@ config BCMA_HOST_PCI
 	bool "Support for BCMA on PCI-host bus"
 	depends on BCMA_HOST_PCI_POSSIBLE
 
+config BCMA_DRIVER_PCI_HOSTMODE
+	bool "Driver for PCI core working in hostmode"
+	depends on BCMA && MIPS
+	help
+	  PCI core hostmode operation (external PCI bus).
+
 config BCMA_DEBUG
 	bool "BCMA debugging"
 	depends on BCMA

drivers/bcma/Makefile

@@ -1,6 +1,7 @@
 bcma-y					+= main.o scan.o core.o sprom.o
 bcma-y					+= driver_chipcommon.o driver_chipcommon_pmu.o
 bcma-y					+= driver_pci.o
+bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE)	+= driver_pci_host.o
 bcma-$(CONFIG_BCMA_HOST_PCI)		+= host_pci.o
 obj-$(CONFIG_BCMA)			+= bcma.o
 

drivers/bcma/bcma_private.h

@@ -28,4 +28,8 @@ extern int __init bcma_host_pci_init(void);
 extern void __exit bcma_host_pci_exit(void);
 #endif /* CONFIG_BCMA_HOST_PCI */
 
+#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
+void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc);
+#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */
+
 #endif

drivers/bcma/driver_pci.c

@@ -157,11 +157,47 @@ static void bcma_pcicore_serdes_workaround(struct bcma_drv_pci *pc)
  * Init.
  **************************************************/
 
-void bcma_core_pci_init(struct bcma_drv_pci *pc)
+static void bcma_core_pci_clientmode_init(struct bcma_drv_pci *pc)
 {
 	bcma_pcicore_serdes_workaround(pc);
 }
 
+static bool bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc)
+{
+	struct bcma_bus *bus = pc->core->bus;
+	u16 chipid_top;
+
+	chipid_top = (bus->chipinfo.id & 0xFF00);
+	if (chipid_top != 0x4700 &&
+	    chipid_top != 0x5300)
+		return false;
+
+	if (bus->sprom.boardflags_lo & SSB_PCICORE_BFL_NOPCI)
+		return false;
+
+#if 0
+	/* TODO: on BCMA we use address from EROM instead of magic formula */
+	u32 tmp;
+	return !mips_busprobe32(tmp, (bus->mmio +
+		(pc->core->core_index * BCMA_CORE_SIZE)));
+#endif
+
+	return true;
+}
+
+void bcma_core_pci_init(struct bcma_drv_pci *pc)
+{
+	if (bcma_core_pci_is_in_hostmode(pc)) {
+#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
+		bcma_core_pci_hostmode_init(pc);
+#else
+		pr_err("Driver compiled without support for hostmode PCI\n");
+#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */
+	} else {
+		bcma_core_pci_clientmode_init(pc);
+	}
+}
+
 int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core,
 			  bool enable)
 {

drivers/bcma/driver_pci_host.c

@@ -0,0 +1,14 @@
+/*
+ * Broadcom specific AMBA
+ * PCI Core in hostmode
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "bcma_private.h"
+#include <linux/bcma/bcma.h>
+
+void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc)
+{
+	pr_err("No support for PCI core in hostmode yet\n");
+}

drivers/net/wireless/ath/carl9170/carl9170.h

@@ -67,6 +67,8 @@
 
 #define PAYLOAD_MAX	(CARL9170_MAX_CMD_LEN / 4 - 1)
 
+static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 };
+
 enum carl9170_rf_init_mode {
 	CARL9170_RFI_NONE,
 	CARL9170_RFI_WARM,
@@ -440,7 +442,6 @@ struct ar9170 {
 enum carl9170_ps_off_override_reasons {
 	PS_OFF_VIF	= BIT(0),
 	PS_OFF_BCN	= BIT(1),
-	PS_OFF_5GHZ	= BIT(2),
 };
 
 struct carl9170_ba_stats {

drivers/net/wireless/ath/carl9170/fw.c

@@ -237,7 +237,7 @@ static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len)
 		ar->disable_offload = true;
 	}
 
-	if (SUPP(CARL9170FW_PSM))
+	if (SUPP(CARL9170FW_PSM) && SUPP(CARL9170FW_FIXED_5GHZ_PSM))
 		ar->hw->flags |= IEEE80211_HW_SUPPORTS_PS;
 
 	if (!SUPP(CARL9170FW_USB_INIT_FIRMWARE)) {

drivers/net/wireless/ath/carl9170/fwcmd.h

@@ -4,7 +4,7 @@
  * Firmware command interface definitions
  *
  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -54,6 +54,7 @@ enum carl9170_cmd_oids {
 	CARL9170_CMD_BCN_CTRL		= 0x05,
 	CARL9170_CMD_READ_TSF		= 0x06,
 	CARL9170_CMD_RX_FILTER		= 0x07,
+	CARL9170_CMD_WOL		= 0x08,
 
 	/* CAM */
 	CARL9170_CMD_EKEY		= 0x10,
@@ -180,6 +181,21 @@ struct carl9170_bcn_ctrl_cmd {
 #define CARL9170_BCN_CTRL_DRAIN	0
 #define CARL9170_BCN_CTRL_CAB_TRIGGER	1
 
+struct carl9170_wol_cmd {
+	__le32		flags;
+	u8		mac[6];
+	u8		bssid[6];
+	__le32		null_interval;
+	__le32		free_for_use2;
+	__le32		mask;
+	u8		pattern[32];
+} __packed;
+
+#define CARL9170_WOL_CMD_SIZE		60
+
+#define CARL9170_WOL_DISCONNECT		1
+#define CARL9170_WOL_MAGIC_PKT		2
+
 struct carl9170_cmd_head {
 	union {
 		struct {
@@ -203,6 +219,7 @@ struct carl9170_cmd {
 		struct carl9170_write_reg	wreg;
 		struct carl9170_rf_init		rf_init;
 		struct carl9170_psm		psm;
+		struct carl9170_wol_cmd		wol;
 		struct carl9170_bcn_ctrl_cmd	bcn_ctrl;
 		struct carl9170_rx_filter_cmd	rx_filter;
 		u8 data[CARL9170_MAX_CMD_PAYLOAD_LEN];

drivers/net/wireless/ath/carl9170/fwdesc.h

@@ -3,7 +3,7 @@
  *
  * Firmware descriptor format
  *
- * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -72,6 +72,9 @@ enum carl9170fw_feature_list {
 	/* Wake up on WLAN */
 	CARL9170FW_WOL,
 
+	/* Firmware supports PSM in the 5GHZ Band */
+	CARL9170FW_FIXED_5GHZ_PSM,
+
 	/* KEEP LAST */
 	__CARL9170FW_FEATURE_NUM
 };
@@ -82,6 +85,7 @@ enum carl9170fw_feature_list {
 #define DBG_MAGIC	"DBG\0"
 #define CHK_MAGIC	"CHK\0"
 #define TXSQ_MAGIC	"TXSQ"
+#define WOL_MAGIC	"WOL\0"
 #define LAST_MAGIC	"LAST"
 
 #define CARL9170FW_SET_DAY(d) (((d) - 1) % 31)
@@ -104,7 +108,7 @@ struct carl9170fw_desc_head {
 	(sizeof(struct carl9170fw_desc_head))
 
 #define CARL9170FW_OTUS_DESC_MIN_VER		6
-#define CARL9170FW_OTUS_DESC_CUR_VER		6
+#define CARL9170FW_OTUS_DESC_CUR_VER		7
 struct carl9170fw_otus_desc {
 	struct carl9170fw_desc_head head;
 	__le32 feature_set;
@@ -186,6 +190,16 @@ struct carl9170fw_txsq_desc {
 #define CARL9170FW_TXSQ_DESC_SIZE			\
 	(sizeof(struct carl9170fw_txsq_desc))
 
+#define CARL9170FW_WOL_DESC_MIN_VER			1
+#define CARL9170FW_WOL_DESC_CUR_VER			1
+struct carl9170fw_wol_desc {
+	struct carl9170fw_desc_head head;
+
+	__le32 supported_triggers;	/* CARL9170_WOL_ */
+} __packed;
+#define CARL9170FW_WOL_DESC_SIZE			\
+	(sizeof(struct carl9170fw_wol_desc))
+
 #define CARL9170FW_LAST_DESC_MIN_VER			1
 #define CARL9170FW_LAST_DESC_CUR_VER			2
 struct carl9170fw_last_desc {

drivers/net/wireless/ath/carl9170/hw.h

@@ -4,7 +4,7 @@
  * Register map, hardware-specific definitions
  *
  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -357,7 +357,18 @@
 
 #define AR9170_MAC_REG_DMA_WLAN_STATUS		(AR9170_MAC_REG_BASE + 0xd38)
 #define	AR9170_MAC_REG_DMA_STATUS		(AR9170_MAC_REG_BASE + 0xd3c)
-
+#define AR9170_MAC_REG_DMA_TXQ_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd40)
+#define	AR9170_MAC_REG_DMA_TXQ0_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd40)
+#define	AR9170_MAC_REG_DMA_TXQ1_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd44)
+#define	AR9170_MAC_REG_DMA_TXQ2_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd48)
+#define	AR9170_MAC_REG_DMA_TXQ3_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd4c)
+#define	AR9170_MAC_REG_DMA_TXQ4_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd50)
+#define	AR9170_MAC_REG_DMA_TXQ0Q1_LEN		(AR9170_MAC_REG_BASE + 0xd54)
+#define	AR9170_MAC_REG_DMA_TXQ2Q3_LEN		(AR9170_MAC_REG_BASE + 0xd58)
+#define	AR9170_MAC_REG_DMA_TXQ4_LEN		(AR9170_MAC_REG_BASE + 0xd5c)
+
+#define AR9170_MAC_REG_DMA_TXQX_LAST_ADDR	(AR9170_MAC_REG_BASE + 0xd74)
+#define AR9170_MAC_REG_DMA_TXQX_FAIL_ADDR	(AR9170_MAC_REG_BASE + 0xd78)
 #define	AR9170_MAC_REG_TXRX_MPI			(AR9170_MAC_REG_BASE + 0xd7c)
 #define		AR9170_MAC_TXRX_MPI_TX_MPI_MASK		0x0000000f
 #define		AR9170_MAC_TXRX_MPI_TX_TO_MASK		0x0000fff0