Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 811 insertions, 0 deletions

diff --git a/drivers/net/wireless/intersil/hostap/hostap_download.c b/drivers/net/wireless/intersil/hostap/hostap_download.c
new file mode 100644
index 000000000..3672291ce
--- /dev/null
+++ b/drivers/net/wireless/intersil/hostap/hostap_download.c
@@ -0,0 +1,811 @@
+// SPDX-License-Identifier: GPL-2.0
+static int prism2_enable_aux_port(struct net_device *dev, int enable)
+{
+	u16 val, reg;
+	int i, tries;
+	unsigned long flags;
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->no_pri) {
+		if (enable) {
+			PDEBUG(DEBUG_EXTRA2, "%s: no PRI f/w - assuming Aux "
+			       "port is already enabled\n", dev->name);
+		}
+		return 0;
+	}
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+
+	/* wait until busy bit is clear */
+	tries = HFA384X_CMD_BUSY_TIMEOUT;
+	while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
+		tries--;
+		udelay(1);
+	}
+	if (tries == 0) {
+		reg = HFA384X_INW(HFA384X_CMD_OFF);
+		spin_unlock_irqrestore(&local->cmdlock, flags);
+		printk("%s: prism2_enable_aux_port - timeout - reg=0x%04x\n",
+		       dev->name, reg);
+		return -ETIMEDOUT;
+	}
+
+	val = HFA384X_INW(HFA384X_CONTROL_OFF);
+
+	if (enable) {
+		HFA384X_OUTW(HFA384X_AUX_MAGIC0, HFA384X_PARAM0_OFF);
+		HFA384X_OUTW(HFA384X_AUX_MAGIC1, HFA384X_PARAM1_OFF);
+		HFA384X_OUTW(HFA384X_AUX_MAGIC2, HFA384X_PARAM2_OFF);
+
+		if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_DISABLED)
+			printk("prism2_enable_aux_port: was not disabled!?\n");
+		val &= ~HFA384X_AUX_PORT_MASK;
+		val |= HFA384X_AUX_PORT_ENABLE;
+	} else {
+		HFA384X_OUTW(0, HFA384X_PARAM0_OFF);
+		HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
+		HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
+
+		if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_ENABLED)
+			printk("prism2_enable_aux_port: was not enabled!?\n");
+		val &= ~HFA384X_AUX_PORT_MASK;
+		val |= HFA384X_AUX_PORT_DISABLE;
+	}
+	HFA384X_OUTW(val, HFA384X_CONTROL_OFF);
+
+	udelay(5);
+
+	i = 10000;
+	while (i > 0) {
+		val = HFA384X_INW(HFA384X_CONTROL_OFF);
+		val &= HFA384X_AUX_PORT_MASK;
+
+		if ((enable && val == HFA384X_AUX_PORT_ENABLED) ||
+		    (!enable && val == HFA384X_AUX_PORT_DISABLED))
+			break;
+
+		udelay(10);
+		i--;
+	}
+
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+
+	if (i == 0) {
+		printk("prism2_enable_aux_port(%d) timed out\n",
+		       enable);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+
+static int hfa384x_from_aux(struct net_device *dev, unsigned int addr, int len,
+			    void *buf)
+{
+	u16 page, offset;
+	if (addr & 1 || len & 1)
+		return -1;
+
+	page = addr >> 7;
+	offset = addr & 0x7f;
+
+	HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
+	HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);
+
+	udelay(5);
+
+#ifdef PRISM2_PCI
+	{
+		__le16 *pos = (__le16 *) buf;
+		while (len > 0) {
+			*pos++ = HFA384X_INW_DATA(HFA384X_AUXDATA_OFF);
+			len -= 2;
+		}
+	}
+#else /* PRISM2_PCI */
+	HFA384X_INSW(HFA384X_AUXDATA_OFF, buf, len / 2);
+#endif /* PRISM2_PCI */
+
+	return 0;
+}
+
+
+static int hfa384x_to_aux(struct net_device *dev, unsigned int addr, int len,
+			  void *buf)
+{
+	u16 page, offset;
+	if (addr & 1 || len & 1)
+		return -1;
+
+	page = addr >> 7;
+	offset = addr & 0x7f;
+
+	HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
+	HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);
+
+	udelay(5);
+
+#ifdef PRISM2_PCI
+	{
+		__le16 *pos = (__le16 *) buf;
+		while (len > 0) {
+			HFA384X_OUTW_DATA(*pos++, HFA384X_AUXDATA_OFF);
+			len -= 2;
+		}
+	}
+#else /* PRISM2_PCI */
+	HFA384X_OUTSW(HFA384X_AUXDATA_OFF, buf, len / 2);
+#endif /* PRISM2_PCI */
+
+	return 0;
+}
+
+
+static int prism2_pda_ok(u8 *buf)
+{
+	__le16 *pda = (__le16 *) buf;
+	int pos;
+	u16 len, pdr;
+
+	if (buf[0] == 0xff && buf[1] == 0x00 && buf[2] == 0xff &&
+	    buf[3] == 0x00)
+		return 0;
+
+	pos = 0;
+	while (pos + 1 < PRISM2_PDA_SIZE / 2) {
+		len = le16_to_cpu(pda[pos]);
+		pdr = le16_to_cpu(pda[pos + 1]);
+		if (len == 0 || pos + len > PRISM2_PDA_SIZE / 2)
+			return 0;
+
+		if (pdr == 0x0000 && len == 2) {
+			/* PDA end found */
+			return 1;
+		}
+
+		pos += len + 1;
+	}
+
+	return 0;
+}
+
+
+#define prism2_download_aux_dump_npages 65536
+
+struct prism2_download_aux_dump {
+	local_info_t *local;
+	u16 page[0x80];
+};
+
+static int prism2_download_aux_dump_proc_show(struct seq_file *m, void *v)
+{
+	struct prism2_download_aux_dump *ctx = m->private;
+
+	hfa384x_from_aux(ctx->local->dev, (unsigned long)v - 1, 0x80, ctx->page);
+	seq_write(m, ctx->page, 0x80);
+	return 0;
+}
+
+static void *prism2_download_aux_dump_proc_start(struct seq_file *m, loff_t *_pos)
+{
+	struct prism2_download_aux_dump *ctx = m->private;
+	prism2_enable_aux_port(ctx->local->dev, 1);
+	if (*_pos >= prism2_download_aux_dump_npages)
+		return NULL;
+	return (void *)((unsigned long)*_pos + 1);
+}
+
+static void *prism2_download_aux_dump_proc_next(struct seq_file *m, void *v, loff_t *_pos)
+{
+	++*_pos;
+	if (*_pos >= prism2_download_aux_dump_npages)
+		return NULL;
+	return (void *)((unsigned long)*_pos + 1);
+}
+
+static void prism2_download_aux_dump_proc_stop(struct seq_file *m, void *v)
+{
+	struct prism2_download_aux_dump *ctx = m->private;
+	prism2_enable_aux_port(ctx->local->dev, 0);
+}
+
+static const struct seq_operations prism2_download_aux_dump_proc_seqops = {
+	.start	= prism2_download_aux_dump_proc_start,
+	.next	= prism2_download_aux_dump_proc_next,
+	.stop	= prism2_download_aux_dump_proc_stop,
+	.show	= prism2_download_aux_dump_proc_show,
+};
+
+static int prism2_download_aux_dump_proc_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open_private(file, &prism2_download_aux_dump_proc_seqops,
+				   sizeof(struct prism2_download_aux_dump));
+	if (ret == 0) {
+		struct seq_file *m = file->private_data;
+		m->private = pde_data(inode);
+	}
+	return ret;
+}
+
+static const struct proc_ops prism2_download_aux_dump_proc_ops = {
+	.proc_open		= prism2_download_aux_dump_proc_open,
+	.proc_read		= seq_read,
+	.proc_lseek		= seq_lseek,
+	.proc_release		= seq_release_private,
+};
+
+
+static u8 * prism2_read_pda(struct net_device *dev)
+{
+	u8 *buf;
+	int res, i, found = 0;
+#define NUM_PDA_ADDRS 4
+	unsigned int pda_addr[NUM_PDA_ADDRS] = {
+		0x7f0000 /* others than HFA3841 */,
+		0x3f0000 /* HFA3841 */,
+		0x390000 /* apparently used in older cards */,
+		0x7f0002 /* Intel PRO/Wireless 2011B (PCI) */,
+	};
+
+	buf = kmalloc(PRISM2_PDA_SIZE, GFP_KERNEL);
+	if (buf == NULL)
+		return NULL;
+
+	/* Note: wlan card should be in initial state (just after init cmd)
+	 * and no other operations should be performed concurrently. */
+
+	prism2_enable_aux_port(dev, 1);
+
+	for (i = 0; i < NUM_PDA_ADDRS; i++) {
+		PDEBUG(DEBUG_EXTRA2, "%s: trying to read PDA from 0x%08x",
+		       dev->name, pda_addr[i]);
+		res = hfa384x_from_aux(dev, pda_addr[i], PRISM2_PDA_SIZE, buf);
+		if (res)
+			continue;
+		if (res == 0 && prism2_pda_ok(buf)) {
+			PDEBUG2(DEBUG_EXTRA2, ": OK\n");
+			found = 1;
+			break;
+		} else {
+			PDEBUG2(DEBUG_EXTRA2, ": failed\n");
+		}
+	}
+
+	prism2_enable_aux_port(dev, 0);
+
+	if (!found) {
+		printk(KERN_DEBUG "%s: valid PDA not found\n", dev->name);
+		kfree(buf);
+		buf = NULL;
+	}
+
+	return buf;
+}
+
+
+static int prism2_download_volatile(local_info_t *local,
+				    struct prism2_download_data *param)
+{
+	struct net_device *dev = local->dev;
+	int ret = 0, i;
+	u16 param0, param1;
+
+	if (local->hw_downloading) {
+		printk(KERN_WARNING "%s: Already downloading - aborting new "
+		       "request\n", dev->name);
+		return -1;
+	}
+
+	local->hw_downloading = 1;
+	if (local->pri_only) {
+		hfa384x_disable_interrupts(dev);
+	} else {
+		prism2_hw_shutdown(dev, 0);
+
+		if (prism2_hw_init(dev, 0)) {
+			printk(KERN_WARNING "%s: Could not initialize card for"
+			       " download\n", dev->name);
+			ret = -1;
+			goto out;
+		}
+	}
+
+	if (prism2_enable_aux_port(dev, 1)) {
+		printk(KERN_WARNING "%s: Could not enable AUX port\n",
+		       dev->name);
+		ret = -1;
+		goto out;
+	}
+
+	param0 = param->start_addr & 0xffff;
+	param1 = param->start_addr >> 16;
+
+	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
+	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
+	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
+			     (HFA384X_PROGMODE_ENABLE_VOLATILE << 8),
+			     param0)) {
+		printk(KERN_WARNING "%s: Download command execution failed\n",
+		       dev->name);
+		ret = -1;
+		goto out;
+	}
+
+	for (i = 0; i < param->num_areas; i++) {
+		PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
+		       dev->name, param->data[i].len, param->data[i].addr);
+		if (hfa384x_to_aux(dev, param->data[i].addr,
+				   param->data[i].len, param->data[i].data)) {
+			printk(KERN_WARNING "%s: RAM download at 0x%08x "
+			       "(len=%d) failed\n", dev->name,
+			       param->data[i].addr, param->data[i].len);
+			ret = -1;
+			goto out;
+		}
+	}
+
+	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
+	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
+	if (hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
+				(HFA384X_PROGMODE_DISABLE << 8), param0)) {
+		printk(KERN_WARNING "%s: Download command execution failed\n",
+		       dev->name);
+		ret = -1;
+		goto out;
+	}
+	/* ProgMode disable causes the hardware to restart itself from the
+	 * given starting address. Give hw some time and ACK command just in
+	 * case restart did not happen. */
+	mdelay(5);
+	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+
+	if (prism2_enable_aux_port(dev, 0)) {
+		printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
+		       dev->name);
+		/* continue anyway.. restart should have taken care of this */
+	}
+
+	mdelay(5);
+	local->hw_downloading = 0;
+	if (prism2_hw_config(dev, 2)) {
+		printk(KERN_WARNING "%s: Card configuration after RAM "
+		       "download failed\n", dev->name);
+		ret = -1;
+		goto out;
+	}
+
+ out:
+	local->hw_downloading = 0;
+	return ret;
+}
+
+
+static int prism2_enable_genesis(local_info_t *local, int hcr)
+{
+	struct net_device *dev = local->dev;
+	u8 initseq[4] = { 0x00, 0xe1, 0xa1, 0xff };
+	u8 readbuf[4];
+
+	printk(KERN_DEBUG "%s: test Genesis mode with HCR 0x%02x\n",
+	       dev->name, hcr);
+	local->func->cor_sreset(local);
+	hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
+	local->func->genesis_reset(local, hcr);
+
+	/* Readback test */
+	hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);
+	hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
+	hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);
+
+	if (memcmp(initseq, readbuf, sizeof(initseq)) == 0) {
+		printk(KERN_DEBUG "Readback test succeeded, HCR 0x%02x\n",
+		       hcr);
+		return 0;
+	} else {
+		printk(KERN_DEBUG "Readback test failed, HCR 0x%02x write %4ph read %4ph\n",
+		       hcr, initseq, readbuf);
+		return 1;
+	}
+}
+
+
+static int prism2_get_ram_size(local_info_t *local)
+{
+	int ret;
+
+	/* Try to enable genesis mode; 0x1F for x8 SRAM or 0x0F for x16 SRAM */
+	if (prism2_enable_genesis(local, 0x1f) == 0)
+		ret = 8;
+	else if (prism2_enable_genesis(local, 0x0f) == 0)
+		ret = 16;
+	else
+		ret = -1;
+
+	/* Disable genesis mode */
+	local->func->genesis_reset(local, ret == 16 ? 0x07 : 0x17);
+
+	return ret;
+}
+
+
+static int prism2_download_genesis(local_info_t *local,
+				   struct prism2_download_data *param)
+{
+	struct net_device *dev = local->dev;
+	int ram16 = 0, i;
+	int ret = 0;
+
+	if (local->hw_downloading) {
+		printk(KERN_WARNING "%s: Already downloading - aborting new "
+		       "request\n", dev->name);
+		return -EBUSY;
+	}
+
+	if (!local->func->genesis_reset || !local->func->cor_sreset) {
+		printk(KERN_INFO "%s: Genesis mode downloading not supported "
+		       "with this hwmodel\n", dev->name);
+		return -EOPNOTSUPP;
+	}
+
+	local->hw_downloading = 1;
+
+	if (prism2_enable_aux_port(dev, 1)) {
+		printk(KERN_DEBUG "%s: failed to enable AUX port\n",
+		       dev->name);
+		ret = -EIO;
+		goto out;
+	}
+
+	if (local->sram_type == -1) {
+		/* 0x1F for x8 SRAM or 0x0F for x16 SRAM */
+		if (prism2_enable_genesis(local, 0x1f) == 0) {
+			ram16 = 0;
+			PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x8 "
+			       "SRAM\n", dev->name);
+		} else if (prism2_enable_genesis(local, 0x0f) == 0) {
+			ram16 = 1;
+			PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x16 "
+			       "SRAM\n", dev->name);
+		} else {
+			printk(KERN_DEBUG "%s: Could not initiate genesis "
+			       "mode\n", dev->name);
+			ret = -EIO;
+			goto out;
+		}
+	} else {
+		if (prism2_enable_genesis(local, local->sram_type == 8 ?
+					  0x1f : 0x0f)) {
+			printk(KERN_DEBUG "%s: Failed to set Genesis "
+			       "mode (sram_type=%d)\n", dev->name,
+			       local->sram_type);
+			ret = -EIO;
+			goto out;
+		}
+		ram16 = local->sram_type != 8;
+	}
+
+	for (i = 0; i < param->num_areas; i++) {
+		PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
+		       dev->name, param->data[i].len, param->data[i].addr);
+		if (hfa384x_to_aux(dev, param->data[i].addr,
+				   param->data[i].len, param->data[i].data)) {
+			printk(KERN_WARNING "%s: RAM download at 0x%08x "
+			       "(len=%d) failed\n", dev->name,
+			       param->data[i].addr, param->data[i].len);
+			ret = -EIO;
+			goto out;
+		}
+	}
+
+	PDEBUG(DEBUG_EXTRA2, "Disable genesis mode\n");
+	local->func->genesis_reset(local, ram16 ? 0x07 : 0x17);
+	if (prism2_enable_aux_port(dev, 0)) {
+		printk(KERN_DEBUG "%s: Failed to disable AUX port\n",
+		       dev->name);
+	}
+
+	mdelay(5);
+	local->hw_downloading = 0;
+
+	PDEBUG(DEBUG_EXTRA2, "Trying to initialize card\n");
+	/*
+	 * Make sure the INIT command does not generate a command completion
+	 * event by disabling interrupts.
+	 */
+	hfa384x_disable_interrupts(dev);
+	if (prism2_hw_init(dev, 1)) {
+		printk(KERN_DEBUG "%s: Initialization after genesis mode "
+		       "download failed\n", dev->name);
+		ret = -EIO;
+		goto out;
+	}
+
+	PDEBUG(DEBUG_EXTRA2, "Card initialized - running PRI only\n");
+	if (prism2_hw_init2(dev, 1)) {
+		printk(KERN_DEBUG "%s: Initialization(2) after genesis mode "
+		       "download failed\n", dev->name);
+		ret = -EIO;
+		goto out;
+	}
+
+ out:
+	local->hw_downloading = 0;
+	return ret;
+}
+
+
+#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
+/* Note! Non-volatile downloading functionality has not yet been tested
+ * thoroughly and it may corrupt flash image and effectively kill the card that
+ * is being updated. You have been warned. */
+
+static inline int prism2_download_block(struct net_device *dev,
+					u32 addr, u8 *data,
+					u32 bufaddr, int rest_len)
+{
+	u16 param0, param1;
+	int block_len;
+
+	block_len = rest_len < 4096 ? rest_len : 4096;
+
+	param0 = addr & 0xffff;
+	param1 = addr >> 16;
+
+	HFA384X_OUTW(block_len, HFA384X_PARAM2_OFF);
+	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
+
+	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
+			     (HFA384X_PROGMODE_ENABLE_NON_VOLATILE << 8),
+			     param0)) {
+		printk(KERN_WARNING "%s: Flash download command execution "
+		       "failed\n", dev->name);
+		return -1;
+	}
+
+	if (hfa384x_to_aux(dev, bufaddr, block_len, data)) {
+		printk(KERN_WARNING "%s: flash download at 0x%08x "
+		       "(len=%d) failed\n", dev->name, addr, block_len);
+		return -1;
+	}
+
+	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
+	HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
+	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
+			     (HFA384X_PROGMODE_PROGRAM_NON_VOLATILE << 8),
+			     0)) {
+		printk(KERN_WARNING "%s: Flash write command execution "
+		       "failed\n", dev->name);
+		return -1;
+	}
+
+	return block_len;
+}
+
+
+static int prism2_download_nonvolatile(local_info_t *local,
+				       struct prism2_download_data *dl)
+{
+	struct net_device *dev = local->dev;
+	int ret = 0, i;
+	struct {
+		__le16 page;
+		__le16 offset;
+		__le16 len;
+	} dlbuffer;
+	u32 bufaddr;
+
+	if (local->hw_downloading) {
+		printk(KERN_WARNING "%s: Already downloading - aborting new "
+		       "request\n", dev->name);
+		return -1;
+	}
+
+	ret = local->func->get_rid(dev, HFA384X_RID_DOWNLOADBUFFER,
+				   &dlbuffer, 6, 0);
+
+	if (ret < 0) {
+		printk(KERN_WARNING "%s: Could not read download buffer "
+		       "parameters\n", dev->name);
+		goto out;
+	}
+
+	printk(KERN_DEBUG "Download buffer: %d bytes at 0x%04x:0x%04x\n",
+	       le16_to_cpu(dlbuffer.len),
+	       le16_to_cpu(dlbuffer.page),
+	       le16_to_cpu(dlbuffer.offset));
+
+	bufaddr = (le16_to_cpu(dlbuffer.page) << 7) + le16_to_cpu(dlbuffer.offset);
+
+	local->hw_downloading = 1;
+
+	if (!local->pri_only) {
+		prism2_hw_shutdown(dev, 0);
+
+		if (prism2_hw_init(dev, 0)) {
+			printk(KERN_WARNING "%s: Could not initialize card for"
+			       " download\n", dev->name);
+			ret = -1;
+			goto out;
+		}
+	}
+
+	hfa384x_disable_interrupts(dev);
+
+	if (prism2_enable_aux_port(dev, 1)) {
+		printk(KERN_WARNING "%s: Could not enable AUX port\n",
+		       dev->name);
+		ret = -1;
+		goto out;
+	}
+
+	printk(KERN_DEBUG "%s: starting flash download\n", dev->name);
+	for (i = 0; i < dl->num_areas; i++) {
+		int rest_len = dl->data[i].len;
+		int data_off = 0;
+
+		while (rest_len > 0) {
+			int block_len;
+
+			block_len = prism2_download_block(
+				dev, dl->data[i].addr + data_off,
+				dl->data[i].data + data_off, bufaddr,
+				rest_len);
+
+			if (block_len < 0) {
+				ret = -1;
+				goto out;
+			}
+
+			rest_len -= block_len;
+			data_off += block_len;
+		}
+	}
+
+	HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
+	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
+	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
+				(HFA384X_PROGMODE_DISABLE << 8), 0)) {
+		printk(KERN_WARNING "%s: Download command execution failed\n",
+		       dev->name);
+		ret = -1;
+		goto out;
+	}
+
+	if (prism2_enable_aux_port(dev, 0)) {
+		printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
+		       dev->name);
+		/* continue anyway.. restart should have taken care of this */
+	}
+
+	mdelay(5);
+
+	local->func->hw_reset(dev);
+	local->hw_downloading = 0;
+	if (prism2_hw_config(dev, 2)) {
+		printk(KERN_WARNING "%s: Card configuration after flash "
+		       "download failed\n", dev->name);
+		ret = -1;
+	} else {
+		printk(KERN_INFO "%s: Card initialized successfully after "
+		       "flash download\n", dev->name);
+	}
+
+ out:
+	local->hw_downloading = 0;
+	return ret;
+}
+#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */
+
+
+static void prism2_download_free_data(struct prism2_download_data *dl)
+{
+	int i;
+
+	if (dl == NULL)
+		return;
+
+	for (i = 0; i < dl->num_areas; i++)
+		kfree(dl->data[i].data);
+	kfree(dl);
+}
+
+
+static int prism2_download(local_info_t *local,
+			   struct prism2_download_param *param)
+{
+	int ret = 0;
+	int i;
+	u32 total_len = 0;
+	struct prism2_download_data *dl = NULL;
+
+	printk(KERN_DEBUG "prism2_download: dl_cmd=%d start_addr=0x%08x "
+	       "num_areas=%d\n",
+	       param->dl_cmd, param->start_addr, param->num_areas);
+
+	if (param->num_areas > 100) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	dl = kzalloc(sizeof(*dl) + param->num_areas *
+		     sizeof(struct prism2_download_data_area), GFP_KERNEL);
+	if (dl == NULL) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	dl->dl_cmd = param->dl_cmd;
+	dl->start_addr = param->start_addr;
+	dl->num_areas = param->num_areas;
+	for (i = 0; i < param->num_areas; i++) {
+		PDEBUG(DEBUG_EXTRA2,
+		       "  area %d: addr=0x%08x len=%d ptr=0x%p\n",
+		       i, param->data[i].addr, param->data[i].len,
+		       param->data[i].ptr);
+
+		dl->data[i].addr = param->data[i].addr;
+		dl->data[i].len = param->data[i].len;
+
+		total_len += param->data[i].len;
+		if (param->data[i].len > PRISM2_MAX_DOWNLOAD_AREA_LEN ||
+		    total_len > PRISM2_MAX_DOWNLOAD_LEN) {
+			ret = -E2BIG;
+			goto out;
+		}
+
+		dl->data[i].data = kmalloc(dl->data[i].len, GFP_KERNEL);
+		if (dl->data[i].data == NULL) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		if (copy_from_user(dl->data[i].data, param->data[i].ptr,
+				   param->data[i].len)) {
+			ret = -EFAULT;
+			goto out;
+		}
+	}
+
+	switch (param->dl_cmd) {
+	case PRISM2_DOWNLOAD_VOLATILE:
+	case PRISM2_DOWNLOAD_VOLATILE_PERSISTENT:
+		ret = prism2_download_volatile(local, dl);
+		break;
+	case PRISM2_DOWNLOAD_VOLATILE_GENESIS:
+	case PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT:
+		ret = prism2_download_genesis(local, dl);
+		break;
+	case PRISM2_DOWNLOAD_NON_VOLATILE:
+#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
+		ret = prism2_download_nonvolatile(local, dl);
+#else /* PRISM2_NON_VOLATILE_DOWNLOAD */
+		printk(KERN_INFO "%s: non-volatile downloading not enabled\n",
+		       local->dev->name);
+		ret = -EOPNOTSUPP;
+#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */
+		break;
+	default:
+		printk(KERN_DEBUG "%s: unsupported download command %d\n",
+		       local->dev->name, param->dl_cmd);
+		ret = -EINVAL;
+		break;
+	}
+
+ out:
+	if (ret == 0 && dl &&
+	    param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT) {
+		prism2_download_free_data(local->dl_pri);
+		local->dl_pri = dl;
+	} else if (ret == 0 && dl &&
+		   param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_PERSISTENT) {
+		prism2_download_free_data(local->dl_sec);
+		local->dl_sec = dl;
+	} else
+		prism2_download_free_data(dl);
+
+	return ret;
+}