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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/crypto/ccree/cc_driver.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/crypto/ccree/cc_driver.c')
-rw-r--r-- | drivers/crypto/ccree/cc_driver.c | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c new file mode 100644 index 000000000..d489c6f80 --- /dev/null +++ b/drivers/crypto/ccree/cc_driver.c @@ -0,0 +1,679 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2012-2019 ARM Limited or its affiliates. */ + +#include <linux/kernel.h> +#include <linux/module.h> + +#include <linux/crypto.h> +#include <linux/moduleparam.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/of.h> +#include <linux/clk.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> + +#include "cc_driver.h" +#include "cc_request_mgr.h" +#include "cc_buffer_mgr.h" +#include "cc_debugfs.h" +#include "cc_cipher.h" +#include "cc_aead.h" +#include "cc_hash.h" +#include "cc_sram_mgr.h" +#include "cc_pm.h" +#include "cc_fips.h" + +bool cc_dump_desc; +module_param_named(dump_desc, cc_dump_desc, bool, 0600); +MODULE_PARM_DESC(cc_dump_desc, "Dump descriptors to kernel log as debugging aid"); +bool cc_dump_bytes; +module_param_named(dump_bytes, cc_dump_bytes, bool, 0600); +MODULE_PARM_DESC(cc_dump_bytes, "Dump buffers to kernel log as debugging aid"); + +static bool cc_sec_disable; +module_param_named(sec_disable, cc_sec_disable, bool, 0600); +MODULE_PARM_DESC(cc_sec_disable, "Disable security functions"); + +struct cc_hw_data { + char *name; + enum cc_hw_rev rev; + u32 sig; + u32 cidr_0123; + u32 pidr_0124; + int std_bodies; +}; + +#define CC_NUM_IDRS 4 +#define CC_HW_RESET_LOOP_COUNT 10 + +/* Note: PIDR3 holds CMOD/Rev so ignored for HW identification purposes */ +static const u32 pidr_0124_offsets[CC_NUM_IDRS] = { + CC_REG(PERIPHERAL_ID_0), CC_REG(PERIPHERAL_ID_1), + CC_REG(PERIPHERAL_ID_2), CC_REG(PERIPHERAL_ID_4) +}; + +static const u32 cidr_0123_offsets[CC_NUM_IDRS] = { + CC_REG(COMPONENT_ID_0), CC_REG(COMPONENT_ID_1), + CC_REG(COMPONENT_ID_2), CC_REG(COMPONENT_ID_3) +}; + +/* Hardware revisions defs. */ + +/* The 703 is a OSCCA only variant of the 713 */ +static const struct cc_hw_data cc703_hw = { + .name = "703", .rev = CC_HW_REV_713, .cidr_0123 = 0xB105F00DU, + .pidr_0124 = 0x040BB0D0U, .std_bodies = CC_STD_OSCCA +}; + +static const struct cc_hw_data cc713_hw = { + .name = "713", .rev = CC_HW_REV_713, .cidr_0123 = 0xB105F00DU, + .pidr_0124 = 0x040BB0D0U, .std_bodies = CC_STD_ALL +}; + +static const struct cc_hw_data cc712_hw = { + .name = "712", .rev = CC_HW_REV_712, .sig = 0xDCC71200U, + .std_bodies = CC_STD_ALL +}; + +static const struct cc_hw_data cc710_hw = { + .name = "710", .rev = CC_HW_REV_710, .sig = 0xDCC63200U, + .std_bodies = CC_STD_ALL +}; + +static const struct cc_hw_data cc630p_hw = { + .name = "630P", .rev = CC_HW_REV_630, .sig = 0xDCC63000U, + .std_bodies = CC_STD_ALL +}; + +static const struct of_device_id arm_ccree_dev_of_match[] = { + { .compatible = "arm,cryptocell-703-ree", .data = &cc703_hw }, + { .compatible = "arm,cryptocell-713-ree", .data = &cc713_hw }, + { .compatible = "arm,cryptocell-712-ree", .data = &cc712_hw }, + { .compatible = "arm,cryptocell-710-ree", .data = &cc710_hw }, + { .compatible = "arm,cryptocell-630p-ree", .data = &cc630p_hw }, + {} +}; +MODULE_DEVICE_TABLE(of, arm_ccree_dev_of_match); + +static void init_cc_cache_params(struct cc_drvdata *drvdata) +{ + struct device *dev = drvdata_to_dev(drvdata); + u32 cache_params, ace_const, val; + u64 mask; + + /* compute CC_AXIM_CACHE_PARAMS */ + cache_params = cc_ioread(drvdata, CC_REG(AXIM_CACHE_PARAMS)); + dev_dbg(dev, "Cache params previous: 0x%08X\n", cache_params); + + /* non cached or write-back, write allocate */ + val = drvdata->coherent ? 0xb : 0x2; + + mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE); + cache_params &= ~mask; + cache_params |= FIELD_PREP(mask, val); + + mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE_LAST); + cache_params &= ~mask; + cache_params |= FIELD_PREP(mask, val); + + mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_ARCACHE); + cache_params &= ~mask; + cache_params |= FIELD_PREP(mask, val); + + drvdata->cache_params = cache_params; + + dev_dbg(dev, "Cache params current: 0x%08X\n", cache_params); + + if (drvdata->hw_rev <= CC_HW_REV_710) + return; + + /* compute CC_AXIM_ACE_CONST */ + ace_const = cc_ioread(drvdata, CC_REG(AXIM_ACE_CONST)); + dev_dbg(dev, "ACE-const previous: 0x%08X\n", ace_const); + + /* system or outer-sharable */ + val = drvdata->coherent ? 0x2 : 0x3; + + mask = CC_GENMASK(CC_AXIM_ACE_CONST_ARDOMAIN); + ace_const &= ~mask; + ace_const |= FIELD_PREP(mask, val); + + mask = CC_GENMASK(CC_AXIM_ACE_CONST_AWDOMAIN); + ace_const &= ~mask; + ace_const |= FIELD_PREP(mask, val); + + dev_dbg(dev, "ACE-const current: 0x%08X\n", ace_const); + + drvdata->ace_const = ace_const; +} + +static u32 cc_read_idr(struct cc_drvdata *drvdata, const u32 *idr_offsets) +{ + int i; + union { + u8 regs[CC_NUM_IDRS]; + __le32 val; + } idr; + + for (i = 0; i < CC_NUM_IDRS; ++i) + idr.regs[i] = cc_ioread(drvdata, idr_offsets[i]); + + return le32_to_cpu(idr.val); +} + +void __dump_byte_array(const char *name, const u8 *buf, size_t len) +{ + char prefix[64]; + + if (!buf) + return; + + snprintf(prefix, sizeof(prefix), "%s[%zu]: ", name, len); + + print_hex_dump(KERN_DEBUG, prefix, DUMP_PREFIX_ADDRESS, 16, 1, buf, + len, false); +} + +static irqreturn_t cc_isr(int irq, void *dev_id) +{ + struct cc_drvdata *drvdata = (struct cc_drvdata *)dev_id; + struct device *dev = drvdata_to_dev(drvdata); + u32 irr; + u32 imr; + + /* STAT_OP_TYPE_GENERIC STAT_PHASE_0: Interrupt */ + /* if driver suspended return, probably shared interrupt */ + if (pm_runtime_suspended(dev)) + return IRQ_NONE; + + /* read the interrupt status */ + irr = cc_ioread(drvdata, CC_REG(HOST_IRR)); + dev_dbg(dev, "Got IRR=0x%08X\n", irr); + + if (irr == 0) /* Probably shared interrupt line */ + return IRQ_NONE; + + imr = cc_ioread(drvdata, CC_REG(HOST_IMR)); + + /* clear interrupt - must be before processing events */ + cc_iowrite(drvdata, CC_REG(HOST_ICR), irr); + + drvdata->irq = irr; + /* Completion interrupt - most probable */ + if (irr & drvdata->comp_mask) { + /* Mask all completion interrupts - will be unmasked in + * deferred service handler + */ + cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | drvdata->comp_mask); + irr &= ~drvdata->comp_mask; + complete_request(drvdata); + } +#ifdef CONFIG_CRYPTO_FIPS + /* TEE FIPS interrupt */ + if (irr & CC_GPR0_IRQ_MASK) { + /* Mask interrupt - will be unmasked in Deferred service + * handler + */ + cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | CC_GPR0_IRQ_MASK); + irr &= ~CC_GPR0_IRQ_MASK; + fips_handler(drvdata); + } +#endif + /* AXI error interrupt */ + if (irr & CC_AXI_ERR_IRQ_MASK) { + u32 axi_err; + + /* Read the AXI error ID */ + axi_err = cc_ioread(drvdata, CC_REG(AXIM_MON_ERR)); + dev_dbg(dev, "AXI completion error: axim_mon_err=0x%08X\n", + axi_err); + + irr &= ~CC_AXI_ERR_IRQ_MASK; + } + + if (irr) { + dev_dbg_ratelimited(dev, "IRR includes unknown cause bits (0x%08X)\n", + irr); + /* Just warning */ + } + + return IRQ_HANDLED; +} + +bool cc_wait_for_reset_completion(struct cc_drvdata *drvdata) +{ + unsigned int val; + unsigned int i; + + /* 712/710/63 has no reset completion indication, always return true */ + if (drvdata->hw_rev <= CC_HW_REV_712) + return true; + + for (i = 0; i < CC_HW_RESET_LOOP_COUNT; i++) { + /* in cc7x3 NVM_IS_IDLE indicates that CC reset is + * completed and device is fully functional + */ + val = cc_ioread(drvdata, CC_REG(NVM_IS_IDLE)); + if (val & CC_NVM_IS_IDLE_MASK) { + /* hw indicate reset completed */ + return true; + } + /* allow scheduling other process on the processor */ + schedule(); + } + /* reset not completed */ + return false; +} + +int init_cc_regs(struct cc_drvdata *drvdata) +{ + unsigned int val; + struct device *dev = drvdata_to_dev(drvdata); + + /* Unmask all AXI interrupt sources AXI_CFG1 register */ + /* AXI interrupt config are obsoleted startign at cc7x3 */ + if (drvdata->hw_rev <= CC_HW_REV_712) { + val = cc_ioread(drvdata, CC_REG(AXIM_CFG)); + cc_iowrite(drvdata, CC_REG(AXIM_CFG), val & ~CC_AXI_IRQ_MASK); + dev_dbg(dev, "AXIM_CFG=0x%08X\n", + cc_ioread(drvdata, CC_REG(AXIM_CFG))); + } + + /* Clear all pending interrupts */ + val = cc_ioread(drvdata, CC_REG(HOST_IRR)); + dev_dbg(dev, "IRR=0x%08X\n", val); + cc_iowrite(drvdata, CC_REG(HOST_ICR), val); + + /* Unmask relevant interrupt cause */ + val = drvdata->comp_mask | CC_AXI_ERR_IRQ_MASK; + + if (drvdata->hw_rev >= CC_HW_REV_712) + val |= CC_GPR0_IRQ_MASK; + + cc_iowrite(drvdata, CC_REG(HOST_IMR), ~val); + + cc_iowrite(drvdata, CC_REG(AXIM_CACHE_PARAMS), drvdata->cache_params); + if (drvdata->hw_rev >= CC_HW_REV_712) + cc_iowrite(drvdata, CC_REG(AXIM_ACE_CONST), drvdata->ace_const); + + return 0; +} + +static int init_cc_resources(struct platform_device *plat_dev) +{ + struct resource *req_mem_cc_regs = NULL; + struct cc_drvdata *new_drvdata; + struct device *dev = &plat_dev->dev; + struct device_node *np = dev->of_node; + u32 val, hw_rev_pidr, sig_cidr; + u64 dma_mask; + const struct cc_hw_data *hw_rev; + struct clk *clk; + int irq; + int rc = 0; + + new_drvdata = devm_kzalloc(dev, sizeof(*new_drvdata), GFP_KERNEL); + if (!new_drvdata) + return -ENOMEM; + + hw_rev = of_device_get_match_data(dev); + new_drvdata->hw_rev_name = hw_rev->name; + new_drvdata->hw_rev = hw_rev->rev; + new_drvdata->std_bodies = hw_rev->std_bodies; + + if (hw_rev->rev >= CC_HW_REV_712) { + new_drvdata->axim_mon_offset = CC_REG(AXIM_MON_COMP); + new_drvdata->sig_offset = CC_REG(HOST_SIGNATURE_712); + new_drvdata->ver_offset = CC_REG(HOST_VERSION_712); + } else { + new_drvdata->axim_mon_offset = CC_REG(AXIM_MON_COMP8); + new_drvdata->sig_offset = CC_REG(HOST_SIGNATURE_630); + new_drvdata->ver_offset = CC_REG(HOST_VERSION_630); + } + + new_drvdata->comp_mask = CC_COMP_IRQ_MASK; + + platform_set_drvdata(plat_dev, new_drvdata); + new_drvdata->plat_dev = plat_dev; + + clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "Error getting clock\n"); + new_drvdata->clk = clk; + + new_drvdata->coherent = of_dma_is_coherent(np); + + /* Get device resources */ + /* First CC registers space */ + req_mem_cc_regs = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); + /* Map registers space */ + new_drvdata->cc_base = devm_ioremap_resource(dev, req_mem_cc_regs); + if (IS_ERR(new_drvdata->cc_base)) + return PTR_ERR(new_drvdata->cc_base); + + dev_dbg(dev, "Got MEM resource (%s): %pR\n", req_mem_cc_regs->name, + req_mem_cc_regs); + dev_dbg(dev, "CC registers mapped from %pa to 0x%p\n", + &req_mem_cc_regs->start, new_drvdata->cc_base); + + /* Then IRQ */ + irq = platform_get_irq(plat_dev, 0); + if (irq < 0) + return irq; + + init_completion(&new_drvdata->hw_queue_avail); + + if (!dev->dma_mask) + dev->dma_mask = &dev->coherent_dma_mask; + + dma_mask = DMA_BIT_MASK(DMA_BIT_MASK_LEN); + rc = dma_set_coherent_mask(dev, dma_mask); + if (rc) { + dev_err(dev, "Failed in dma_set_coherent_mask, mask=%llx\n", + dma_mask); + return rc; + } + + rc = clk_prepare_enable(new_drvdata->clk); + if (rc) { + dev_err(dev, "Failed to enable clock"); + return rc; + } + + new_drvdata->sec_disabled = cc_sec_disable; + + pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + rc = pm_runtime_get_sync(dev); + if (rc < 0) { + dev_err(dev, "pm_runtime_get_sync() failed: %d\n", rc); + goto post_pm_err; + } + + /* Wait for Cryptocell reset completion */ + if (!cc_wait_for_reset_completion(new_drvdata)) { + dev_err(dev, "Cryptocell reset not completed"); + } + + if (hw_rev->rev <= CC_HW_REV_712) { + /* Verify correct mapping */ + val = cc_ioread(new_drvdata, new_drvdata->sig_offset); + if (val != hw_rev->sig) { + dev_err(dev, "Invalid CC signature: SIGNATURE=0x%08X != expected=0x%08X\n", + val, hw_rev->sig); + rc = -EINVAL; + goto post_pm_err; + } + sig_cidr = val; + hw_rev_pidr = cc_ioread(new_drvdata, new_drvdata->ver_offset); + } else { + /* Verify correct mapping */ + val = cc_read_idr(new_drvdata, pidr_0124_offsets); + if (val != hw_rev->pidr_0124) { + dev_err(dev, "Invalid CC PIDR: PIDR0124=0x%08X != expected=0x%08X\n", + val, hw_rev->pidr_0124); + rc = -EINVAL; + goto post_pm_err; + } + hw_rev_pidr = val; + + val = cc_read_idr(new_drvdata, cidr_0123_offsets); + if (val != hw_rev->cidr_0123) { + dev_err(dev, "Invalid CC CIDR: CIDR0123=0x%08X != expected=0x%08X\n", + val, hw_rev->cidr_0123); + rc = -EINVAL; + goto post_pm_err; + } + sig_cidr = val; + + /* Check HW engine configuration */ + val = cc_ioread(new_drvdata, CC_REG(HOST_REMOVE_INPUT_PINS)); + switch (val) { + case CC_PINS_FULL: + /* This is fine */ + break; + case CC_PINS_SLIM: + if (new_drvdata->std_bodies & CC_STD_NIST) { + dev_warn(dev, "703 mode forced due to HW configuration.\n"); + new_drvdata->std_bodies = CC_STD_OSCCA; + } + break; + default: + dev_err(dev, "Unsupported engines configuration.\n"); + rc = -EINVAL; + goto post_pm_err; + } + + /* Check security disable state */ + val = cc_ioread(new_drvdata, CC_REG(SECURITY_DISABLED)); + val &= CC_SECURITY_DISABLED_MASK; + new_drvdata->sec_disabled |= !!val; + + if (!new_drvdata->sec_disabled) { + new_drvdata->comp_mask |= CC_CPP_SM4_ABORT_MASK; + if (new_drvdata->std_bodies & CC_STD_NIST) + new_drvdata->comp_mask |= CC_CPP_AES_ABORT_MASK; + } + } + + if (new_drvdata->sec_disabled) + dev_info(dev, "Security Disabled mode is in effect. Security functions disabled.\n"); + + /* Display HW versions */ + dev_info(dev, "ARM CryptoCell %s Driver: HW version 0x%08X/0x%8X, Driver version %s\n", + hw_rev->name, hw_rev_pidr, sig_cidr, DRV_MODULE_VERSION); + /* register the driver isr function */ + rc = devm_request_irq(dev, irq, cc_isr, IRQF_SHARED, "ccree", + new_drvdata); + if (rc) { + dev_err(dev, "Could not register to interrupt %d\n", irq); + goto post_pm_err; + } + dev_dbg(dev, "Registered to IRQ: %d\n", irq); + + init_cc_cache_params(new_drvdata); + + rc = init_cc_regs(new_drvdata); + if (rc) { + dev_err(dev, "init_cc_regs failed\n"); + goto post_pm_err; + } + + rc = cc_debugfs_init(new_drvdata); + if (rc) { + dev_err(dev, "Failed registering debugfs interface\n"); + goto post_regs_err; + } + + rc = cc_fips_init(new_drvdata); + if (rc) { + dev_err(dev, "cc_fips_init failed 0x%x\n", rc); + goto post_debugfs_err; + } + rc = cc_sram_mgr_init(new_drvdata); + if (rc) { + dev_err(dev, "cc_sram_mgr_init failed\n"); + goto post_fips_init_err; + } + + new_drvdata->mlli_sram_addr = + cc_sram_alloc(new_drvdata, MAX_MLLI_BUFF_SIZE); + if (new_drvdata->mlli_sram_addr == NULL_SRAM_ADDR) { + rc = -ENOMEM; + goto post_fips_init_err; + } + + rc = cc_req_mgr_init(new_drvdata); + if (rc) { + dev_err(dev, "cc_req_mgr_init failed\n"); + goto post_fips_init_err; + } + + rc = cc_buffer_mgr_init(new_drvdata); + if (rc) { + dev_err(dev, "cc_buffer_mgr_init failed\n"); + goto post_req_mgr_err; + } + + /* hash must be allocated first due to use of send_request_init() + * and dependency of AEAD on it + */ + rc = cc_hash_alloc(new_drvdata); + if (rc) { + dev_err(dev, "cc_hash_alloc failed\n"); + goto post_buf_mgr_err; + } + + /* Allocate crypto algs */ + rc = cc_cipher_alloc(new_drvdata); + if (rc) { + dev_err(dev, "cc_cipher_alloc failed\n"); + goto post_hash_err; + } + + rc = cc_aead_alloc(new_drvdata); + if (rc) { + dev_err(dev, "cc_aead_alloc failed\n"); + goto post_cipher_err; + } + + /* If we got here and FIPS mode is enabled + * it means all FIPS test passed, so let TEE + * know we're good. + */ + cc_set_ree_fips_status(new_drvdata, true); + + pm_runtime_put(dev); + return 0; + +post_cipher_err: + cc_cipher_free(new_drvdata); +post_hash_err: + cc_hash_free(new_drvdata); +post_buf_mgr_err: + cc_buffer_mgr_fini(new_drvdata); +post_req_mgr_err: + cc_req_mgr_fini(new_drvdata); +post_fips_init_err: + cc_fips_fini(new_drvdata); +post_debugfs_err: + cc_debugfs_fini(new_drvdata); +post_regs_err: + fini_cc_regs(new_drvdata); +post_pm_err: + pm_runtime_put_noidle(dev); + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + clk_disable_unprepare(new_drvdata->clk); + return rc; +} + +void fini_cc_regs(struct cc_drvdata *drvdata) +{ + /* Mask all interrupts */ + cc_iowrite(drvdata, CC_REG(HOST_IMR), 0xFFFFFFFF); +} + +static void cleanup_cc_resources(struct platform_device *plat_dev) +{ + struct device *dev = &plat_dev->dev; + struct cc_drvdata *drvdata = + (struct cc_drvdata *)platform_get_drvdata(plat_dev); + + cc_aead_free(drvdata); + cc_cipher_free(drvdata); + cc_hash_free(drvdata); + cc_buffer_mgr_fini(drvdata); + cc_req_mgr_fini(drvdata); + cc_fips_fini(drvdata); + cc_debugfs_fini(drvdata); + fini_cc_regs(drvdata); + pm_runtime_put_noidle(dev); + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + clk_disable_unprepare(drvdata->clk); +} + +unsigned int cc_get_default_hash_len(struct cc_drvdata *drvdata) +{ + if (drvdata->hw_rev >= CC_HW_REV_712) + return HASH_LEN_SIZE_712; + else + return HASH_LEN_SIZE_630; +} + +static int ccree_probe(struct platform_device *plat_dev) +{ + int rc; + struct device *dev = &plat_dev->dev; + + /* Map registers space */ + rc = init_cc_resources(plat_dev); + if (rc) + return rc; + + dev_info(dev, "ARM ccree device initialized\n"); + + return 0; +} + +static int ccree_remove(struct platform_device *plat_dev) +{ + struct device *dev = &plat_dev->dev; + + dev_dbg(dev, "Releasing ccree resources...\n"); + + cleanup_cc_resources(plat_dev); + + dev_info(dev, "ARM ccree device terminated\n"); + + return 0; +} + +static struct platform_driver ccree_driver = { + .driver = { + .name = "ccree", + .of_match_table = arm_ccree_dev_of_match, +#ifdef CONFIG_PM + .pm = &ccree_pm, +#endif + }, + .probe = ccree_probe, + .remove = ccree_remove, +}; + +static int __init ccree_init(void) +{ + int rc; + + cc_debugfs_global_init(); + + rc = platform_driver_register(&ccree_driver); + if (rc) { + cc_debugfs_global_fini(); + return rc; + } + + return 0; +} +module_init(ccree_init); + +static void __exit ccree_exit(void) +{ + platform_driver_unregister(&ccree_driver); + cc_debugfs_global_fini(); +} +module_exit(ccree_exit); + +/* Module description */ +MODULE_DESCRIPTION("ARM TrustZone CryptoCell REE Driver"); +MODULE_VERSION(DRV_MODULE_VERSION); +MODULE_AUTHOR("ARM"); +MODULE_LICENSE("GPL v2"); |