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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/crypto/ccree/cc_driver.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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.c679
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");