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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/nfc/fdp/fdp.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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().
...
Diffstat (limited to 'drivers/nfc/fdp/fdp.c')
-rw-r--r-- | drivers/nfc/fdp/fdp.c | 764 |
1 files changed, 764 insertions, 0 deletions
diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c new file mode 100644 index 000000000..f12f903a9 --- /dev/null +++ b/drivers/nfc/fdp/fdp.c @@ -0,0 +1,764 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * ------------------------------------------------------------------------- + */ + +#include <linux/module.h> +#include <linux/nfc.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/firmware.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define FDP_OTP_PATCH_NAME "otp.bin" +#define FDP_RAM_PATCH_NAME "ram.bin" +#define FDP_FW_HEADER_SIZE 576 +#define FDP_FW_UPDATE_SLEEP 1000 + +#define NCI_GET_VERSION_TIMEOUT 8000 +#define NCI_PATCH_REQUEST_TIMEOUT 8000 +#define FDP_PATCH_CONN_DEST 0xC2 +#define FDP_PATCH_CONN_PARAM_TYPE 0xA0 + +#define NCI_PATCH_TYPE_RAM 0x00 +#define NCI_PATCH_TYPE_OTP 0x01 +#define NCI_PATCH_TYPE_EOT 0xFF + +#define NCI_PARAM_ID_FW_RAM_VERSION 0xA0 +#define NCI_PARAM_ID_FW_OTP_VERSION 0xA1 +#define NCI_PARAM_ID_OTP_LIMITED_VERSION 0xC5 +#define NCI_PARAM_ID_KEY_INDEX_ID 0xC6 + +#define NCI_GID_PROP 0x0F +#define NCI_OP_PROP_PATCH_OID 0x08 +#define NCI_OP_PROP_SET_PDATA_OID 0x23 + +struct fdp_nci_info { + const struct nfc_phy_ops *phy_ops; + struct fdp_i2c_phy *phy; + struct nci_dev *ndev; + + const struct firmware *otp_patch; + const struct firmware *ram_patch; + u32 otp_patch_version; + u32 ram_patch_version; + + u32 otp_version; + u32 ram_version; + u32 limited_otp_version; + u8 key_index; + + const u8 *fw_vsc_cfg; + u8 clock_type; + u32 clock_freq; + + atomic_t data_pkt_counter; + void (*data_pkt_counter_cb)(struct nci_dev *ndev); + u8 setup_patch_sent; + u8 setup_patch_ntf; + u8 setup_patch_status; + u8 setup_reset_ntf; + wait_queue_head_t setup_wq; +}; + +static const u8 nci_core_get_config_otp_ram_version[5] = { + 0x04, + NCI_PARAM_ID_FW_RAM_VERSION, + NCI_PARAM_ID_FW_OTP_VERSION, + NCI_PARAM_ID_OTP_LIMITED_VERSION, + NCI_PARAM_ID_KEY_INDEX_ID +}; + +struct nci_core_get_config_rsp { + u8 status; + u8 count; + u8 data[]; +}; + +static int fdp_nci_create_conn(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct core_conn_create_dest_spec_params param; + int r; + + /* proprietary destination specific paramerer without value */ + param.type = FDP_PATCH_CONN_PARAM_TYPE; + param.length = 0x00; + + r = nci_core_conn_create(info->ndev, FDP_PATCH_CONN_DEST, 1, + sizeof(param), ¶m); + if (r) + return r; + + return nci_get_conn_info_by_dest_type_params(ndev, + FDP_PATCH_CONN_DEST, NULL); +} + +static inline int fdp_nci_get_versions(struct nci_dev *ndev) +{ + return nci_core_cmd(ndev, NCI_OP_CORE_GET_CONFIG_CMD, + sizeof(nci_core_get_config_otp_ram_version), + (__u8 *) &nci_core_get_config_otp_ram_version); +} + +static inline int fdp_nci_patch_cmd(struct nci_dev *ndev, u8 type) +{ + return nci_prop_cmd(ndev, NCI_OP_PROP_PATCH_OID, sizeof(type), &type); +} + +static inline int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, + const char *data) +{ + return nci_prop_cmd(ndev, NCI_OP_PROP_SET_PDATA_OID, len, data); +} + +static int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, + u32 clock_freq) +{ + u32 fc = 13560; + u32 nd, num, delta; + char data[9]; + + nd = (24 * fc) / clock_freq; + delta = 24 * fc - nd * clock_freq; + num = (32768 * delta) / clock_freq; + + data[0] = 0x00; + data[1] = 0x00; + data[2] = 0x00; + + data[3] = 0x10; + data[4] = 0x04; + data[5] = num & 0xFF; + data[6] = (num >> 8) & 0xff; + data[7] = nd; + data[8] = clock_type; + + return fdp_nci_set_production_data(ndev, 9, data); +} + +static void fdp_nci_send_patch_cb(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_patch_sent = 1; + wake_up(&info->setup_wq); +} + +/* + * Register a packet sent counter and a callback + * + * We have no other way of knowing when all firmware packets were sent out + * on the i2c bus. We need to know that in order to close the connection and + * send the patch end message. + */ +static void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev, + void (*cb)(struct nci_dev *ndev), int count) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + + dev_dbg(dev, "NCI data pkt counter %d\n", count); + atomic_set(&info->data_pkt_counter, count); + info->data_pkt_counter_cb = cb; +} + +/* + * The device is expecting a stream of packets. All packets need to + * have the PBF flag set to 0x0 (last packet) even if the firmware + * file is segmented and there are multiple packets. If we give the + * whole firmware to nci_send_data it will segment it and it will set + * the PBF flag to 0x01 so we need to do the segmentation here. + * + * The firmware will be analyzed and applied when we send NCI_OP_PROP_PATCH_CMD + * command with NCI_PATCH_TYPE_EOT parameter. The device will send a + * NFCC_PATCH_NTF packet and a NCI_OP_CORE_RESET_NTF packet. + */ +static int fdp_nci_send_patch(struct nci_dev *ndev, u8 conn_id, u8 type) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + const struct firmware *fw; + struct sk_buff *skb; + unsigned long len; + int max_size, payload_size; + int rc = 0; + + if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || + (type == NCI_PATCH_TYPE_RAM && !info->ram_patch)) + return -EINVAL; + + if (type == NCI_PATCH_TYPE_OTP) + fw = info->otp_patch; + else + fw = info->ram_patch; + + max_size = nci_conn_max_data_pkt_payload_size(ndev, conn_id); + if (max_size <= 0) + return -EINVAL; + + len = fw->size; + + fdp_nci_set_data_pkt_counter(ndev, fdp_nci_send_patch_cb, + DIV_ROUND_UP(fw->size, max_size)); + + while (len) { + + payload_size = min_t(unsigned long, max_size, len); + + skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), + GFP_KERNEL); + if (!skb) { + fdp_nci_set_data_pkt_counter(ndev, NULL, 0); + return -ENOMEM; + } + + + skb_reserve(skb, NCI_CTRL_HDR_SIZE); + + skb_put_data(skb, fw->data + (fw->size - len), payload_size); + + rc = nci_send_data(ndev, conn_id, skb); + + if (rc) { + fdp_nci_set_data_pkt_counter(ndev, NULL, 0); + return rc; + } + + len -= payload_size; + } + + return rc; +} + +static int fdp_nci_open(struct nci_dev *ndev) +{ + const struct fdp_nci_info *info = nci_get_drvdata(ndev); + + return info->phy_ops->enable(info->phy); +} + +static int fdp_nci_close(struct nci_dev *ndev) +{ + return 0; +} + +static int fdp_nci_send(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + int ret; + + if (atomic_dec_and_test(&info->data_pkt_counter)) + info->data_pkt_counter_cb(ndev); + + ret = info->phy_ops->write(info->phy, skb); + if (ret < 0) { + kfree_skb(skb); + return ret; + } + + consume_skb(skb); + return 0; +} + +static int fdp_nci_request_firmware(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + const u8 *data; + int r; + + r = request_firmware(&info->ram_patch, FDP_RAM_PATCH_NAME, dev); + if (r < 0) { + nfc_err(dev, "RAM patch request error\n"); + return r; + } + + data = info->ram_patch->data; + info->ram_patch_version = + data[FDP_FW_HEADER_SIZE] | + (data[FDP_FW_HEADER_SIZE + 1] << 8) | + (data[FDP_FW_HEADER_SIZE + 2] << 16) | + (data[FDP_FW_HEADER_SIZE + 3] << 24); + + dev_dbg(dev, "RAM patch version: %d, size: %zu\n", + info->ram_patch_version, info->ram_patch->size); + + + r = request_firmware(&info->otp_patch, FDP_OTP_PATCH_NAME, dev); + if (r < 0) { + nfc_err(dev, "OTP patch request error\n"); + return 0; + } + + data = (u8 *) info->otp_patch->data; + info->otp_patch_version = + data[FDP_FW_HEADER_SIZE] | + (data[FDP_FW_HEADER_SIZE + 1] << 8) | + (data[FDP_FW_HEADER_SIZE+2] << 16) | + (data[FDP_FW_HEADER_SIZE+3] << 24); + + dev_dbg(dev, "OTP patch version: %d, size: %zu\n", + info->otp_patch_version, info->otp_patch->size); + return 0; +} + +static void fdp_nci_release_firmware(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + if (info->otp_patch) { + release_firmware(info->otp_patch); + info->otp_patch = NULL; + } + + if (info->ram_patch) { + release_firmware(info->ram_patch); + info->ram_patch = NULL; + } +} + +static int fdp_nci_patch_otp(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + int conn_id; + int r = 0; + + if (info->otp_version >= info->otp_patch_version) + return r; + + info->setup_patch_sent = 0; + info->setup_reset_ntf = 0; + info->setup_patch_ntf = 0; + + /* Patch init request */ + r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_OTP); + if (r) + return r; + + /* Patch data connection creation */ + conn_id = fdp_nci_create_conn(ndev); + if (conn_id < 0) + return conn_id; + + /* Send the patch over the data connection */ + r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_OTP); + if (r) + return r; + + /* Wait for all the packets to be send over i2c */ + wait_event_interruptible(info->setup_wq, + info->setup_patch_sent == 1); + + /* make sure that the NFCC processed the last data packet */ + msleep(FDP_FW_UPDATE_SLEEP); + + /* Close the data connection */ + r = nci_core_conn_close(info->ndev, conn_id); + if (r) + return r; + + /* Patch finish message */ + if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { + nfc_err(dev, "OTP patch error 0x%x\n", r); + return -EINVAL; + } + + /* If the patch notification didn't arrive yet, wait for it */ + wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); + + /* Check if the patching was successful */ + r = info->setup_patch_status; + if (r) { + nfc_err(dev, "OTP patch error 0x%x\n", r); + return -EINVAL; + } + + /* + * We need to wait for the reset notification before we + * can continue + */ + wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); + + return r; +} + +static int fdp_nci_patch_ram(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + int conn_id; + int r = 0; + + if (info->ram_version >= info->ram_patch_version) + return r; + + info->setup_patch_sent = 0; + info->setup_reset_ntf = 0; + info->setup_patch_ntf = 0; + + /* Patch init request */ + r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_RAM); + if (r) + return r; + + /* Patch data connection creation */ + conn_id = fdp_nci_create_conn(ndev); + if (conn_id < 0) + return conn_id; + + /* Send the patch over the data connection */ + r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_RAM); + if (r) + return r; + + /* Wait for all the packets to be send over i2c */ + wait_event_interruptible(info->setup_wq, + info->setup_patch_sent == 1); + + /* make sure that the NFCC processed the last data packet */ + msleep(FDP_FW_UPDATE_SLEEP); + + /* Close the data connection */ + r = nci_core_conn_close(info->ndev, conn_id); + if (r) + return r; + + /* Patch finish message */ + if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { + nfc_err(dev, "RAM patch error 0x%x\n", r); + return -EINVAL; + } + + /* If the patch notification didn't arrive yet, wait for it */ + wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); + + /* Check if the patching was successful */ + r = info->setup_patch_status; + if (r) { + nfc_err(dev, "RAM patch error 0x%x\n", r); + return -EINVAL; + } + + /* + * We need to wait for the reset notification before we + * can continue + */ + wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); + + return r; +} + +static int fdp_nci_setup(struct nci_dev *ndev) +{ + /* Format: total length followed by an NCI packet */ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + int r; + u8 patched = 0; + + r = nci_core_init(ndev); + if (r) + goto error; + + /* Get RAM and OTP version */ + r = fdp_nci_get_versions(ndev); + if (r) + goto error; + + /* Load firmware from disk */ + r = fdp_nci_request_firmware(ndev); + if (r) + goto error; + + /* Update OTP */ + if (info->otp_version < info->otp_patch_version) { + r = fdp_nci_patch_otp(ndev); + if (r) + goto error; + patched = 1; + } + + /* Update RAM */ + if (info->ram_version < info->ram_patch_version) { + r = fdp_nci_patch_ram(ndev); + if (r) + goto error; + patched = 1; + } + + /* Release the firmware buffers */ + fdp_nci_release_firmware(ndev); + + /* If a patch was applied the new version is checked */ + if (patched) { + r = nci_core_init(ndev); + if (r) + goto error; + + r = fdp_nci_get_versions(ndev); + if (r) + goto error; + + if (info->otp_version != info->otp_patch_version || + info->ram_version != info->ram_patch_version) { + nfc_err(dev, "Firmware update failed"); + r = -EINVAL; + goto error; + } + } + + /* + * We initialized the devices but the NFC subsystem expects + * it to not be initialized. + */ + return nci_core_reset(ndev); + +error: + fdp_nci_release_firmware(ndev); + nfc_err(dev, "Setup error %d\n", r); + return r; +} + +static int fdp_nci_post_setup(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + int r; + + /* Check if the device has VSC */ + if (info->fw_vsc_cfg && info->fw_vsc_cfg[0]) { + + /* Set the vendor specific configuration */ + r = fdp_nci_set_production_data(ndev, info->fw_vsc_cfg[3], + &info->fw_vsc_cfg[4]); + if (r) { + nfc_err(dev, "Vendor specific config set error %d\n", + r); + return r; + } + } + + /* Set clock type and frequency */ + r = fdp_nci_set_clock(ndev, info->clock_type, info->clock_freq); + if (r) { + nfc_err(dev, "Clock set error %d\n", r); + return r; + } + + /* + * In order to apply the VSC FDP needs a reset + */ + r = nci_core_reset(ndev); + if (r) + return r; + + /** + * The nci core was initialized when post setup was called + * so we leave it like that + */ + return nci_core_init(ndev); +} + +static int fdp_nci_core_reset_ntf_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_reset_ntf = 1; + wake_up(&info->setup_wq); + + return 0; +} + +static int fdp_nci_prop_patch_ntf_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_patch_ntf = 1; + info->setup_patch_status = skb->data[0]; + wake_up(&info->setup_wq); + + return 0; +} + +static int fdp_nci_prop_patch_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + u8 status = skb->data[0]; + + dev_dbg(dev, "%s: status 0x%x\n", __func__, status); + nci_req_complete(ndev, status); + + return 0; +} + +static int fdp_nci_prop_set_production_data_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + u8 status = skb->data[0]; + + dev_dbg(dev, "%s: status 0x%x\n", __func__, status); + nci_req_complete(ndev, status); + + return 0; +} + +static int fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + const struct nci_core_get_config_rsp *rsp = (void *) skb->data; + unsigned int i; + const u8 *p; + + if (rsp->status == NCI_STATUS_OK) { + + p = rsp->data; + for (i = 0; i < 4; i++) { + + switch (*p++) { + case NCI_PARAM_ID_FW_RAM_VERSION: + p++; + info->ram_version = le32_to_cpup((__le32 *) p); + p += 4; + break; + case NCI_PARAM_ID_FW_OTP_VERSION: + p++; + info->otp_version = le32_to_cpup((__le32 *) p); + p += 4; + break; + case NCI_PARAM_ID_OTP_LIMITED_VERSION: + p++; + info->otp_version = le32_to_cpup((__le32 *) p); + p += 4; + break; + case NCI_PARAM_ID_KEY_INDEX_ID: + p++; + info->key_index = *p++; + } + } + } + + dev_dbg(dev, "OTP version %d\n", info->otp_version); + dev_dbg(dev, "RAM version %d\n", info->ram_version); + dev_dbg(dev, "key index %d\n", info->key_index); + dev_dbg(dev, "%s: status 0x%x\n", __func__, rsp->status); + + nci_req_complete(ndev, rsp->status); + + return 0; +} + +static const struct nci_driver_ops fdp_core_ops[] = { + { + .opcode = NCI_OP_CORE_GET_CONFIG_RSP, + .rsp = fdp_nci_core_get_config_rsp_packet, + }, + { + .opcode = NCI_OP_CORE_RESET_NTF, + .ntf = fdp_nci_core_reset_ntf_packet, + }, +}; + +static const struct nci_driver_ops fdp_prop_ops[] = { + { + .opcode = nci_opcode_pack(NCI_GID_PROP, NCI_OP_PROP_PATCH_OID), + .rsp = fdp_nci_prop_patch_rsp_packet, + .ntf = fdp_nci_prop_patch_ntf_packet, + }, + { + .opcode = nci_opcode_pack(NCI_GID_PROP, + NCI_OP_PROP_SET_PDATA_OID), + .rsp = fdp_nci_prop_set_production_data_rsp_packet, + }, +}; + +static const struct nci_ops nci_ops = { + .open = fdp_nci_open, + .close = fdp_nci_close, + .send = fdp_nci_send, + .setup = fdp_nci_setup, + .post_setup = fdp_nci_post_setup, + .prop_ops = fdp_prop_ops, + .n_prop_ops = ARRAY_SIZE(fdp_prop_ops), + .core_ops = fdp_core_ops, + .n_core_ops = ARRAY_SIZE(fdp_core_ops), +}; + +int fdp_nci_probe(struct fdp_i2c_phy *phy, const struct nfc_phy_ops *phy_ops, + struct nci_dev **ndevp, int tx_headroom, + int tx_tailroom, u8 clock_type, u32 clock_freq, + const u8 *fw_vsc_cfg) +{ + struct device *dev = &phy->i2c_dev->dev; + struct fdp_nci_info *info; + struct nci_dev *ndev; + u32 protocols; + int r; + + info = devm_kzalloc(dev, sizeof(struct fdp_nci_info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->phy = phy; + info->phy_ops = phy_ops; + info->clock_type = clock_type; + info->clock_freq = clock_freq; + info->fw_vsc_cfg = fw_vsc_cfg; + + init_waitqueue_head(&info->setup_wq); + + protocols = NFC_PROTO_JEWEL_MASK | + NFC_PROTO_MIFARE_MASK | + NFC_PROTO_FELICA_MASK | + NFC_PROTO_ISO14443_MASK | + NFC_PROTO_ISO14443_B_MASK | + NFC_PROTO_NFC_DEP_MASK | + NFC_PROTO_ISO15693_MASK; + + BUILD_BUG_ON(ARRAY_SIZE(fdp_prop_ops) > NCI_MAX_PROPRIETARY_CMD); + ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom, + tx_tailroom); + if (!ndev) { + nfc_err(dev, "Cannot allocate nfc ndev\n"); + return -ENOMEM; + } + + r = nci_register_device(ndev); + if (r) + goto err_regdev; + + *ndevp = ndev; + info->ndev = ndev; + + nci_set_drvdata(ndev, info); + + return 0; + +err_regdev: + nci_free_device(ndev); + return r; +} +EXPORT_SYMBOL(fdp_nci_probe); + +void fdp_nci_remove(struct nci_dev *ndev) +{ + nci_unregister_device(ndev); + nci_free_device(ndev); +} +EXPORT_SYMBOL(fdp_nci_remove); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("NFC NCI driver for Intel Fields Peak NFC controller"); +MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>"); |