# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_CRYPTO_DEV_OCTEONTX_CPT) += octeontx-cpt.o
+obj-$(CONFIG_CRYPTO_DEV_OCTEONTX_CPT) += octeontx-cpt.o octeontx-cptvf.o
octeontx-cpt-objs := otx_cptpf_main.o otx_cptpf_mbox.o otx_cptpf_ucode.o
+octeontx-cptvf-objs := otx_cptvf_main.o otx_cptvf_mbox.o otx_cptvf_reqmgr.o \
+ otx_cptvf_algs.o
/* Device IDs */
#define OTX_CPT_PCI_PF_DEVICE_ID 0xa040
+#define OTX_CPT_PCI_VF_DEVICE_ID 0xa041
#define OTX_CPT_PCI_PF_SUBSYS_ID 0xa340
+#define OTX_CPT_PCI_VF_SUBSYS_ID 0xa341
/* Configuration and status registers are in BAR0 on OcteonTX platform */
#define OTX_CPT_PF_PCI_CFG_BAR 0
+#define OTX_CPT_VF_PCI_CFG_BAR 0
+
+#define OTX_CPT_BAR_E_CPTX_VFX_BAR0_OFFSET(a, b) \
+ (0x000020000000ll + 0x1000000000ll * (a) + 0x100000ll * (b))
+#define OTX_CPT_BAR_E_CPTX_VFX_BAR0_SIZE 0x400000
+
/* Mailbox interrupts offset */
#define OTX_CPT_PF_MBOX_INT 3
#define OTX_CPT_PF_INT_VEC_E_MBOXX(x, a) ((x) + (a))
/* Maximum supported microcode groups */
#define OTX_CPT_MAX_ENGINE_GROUPS 8
+/* CPT instruction size in bytes */
+#define OTX_CPT_INST_SIZE 64
+/* CPT queue next chunk pointer size in bytes */
+#define OTX_CPT_NEXT_CHUNK_PTR_SIZE 8
+
+/* OcteonTX CPT VF MSIX vectors and their offsets */
+#define OTX_CPT_VF_MSIX_VECTORS 2
+#define OTX_CPT_VF_INTR_MBOX_MASK BIT(0)
+#define OTX_CPT_VF_INTR_DOVF_MASK BIT(1)
+#define OTX_CPT_VF_INTR_IRDE_MASK BIT(2)
+#define OTX_CPT_VF_INTR_NWRP_MASK BIT(3)
+#define OTX_CPT_VF_INTR_SERR_MASK BIT(4)
+
/* OcteonTX CPT PF registers */
#define OTX_CPT_PF_CONSTANTS (0x0ll)
#define OTX_CPT_PF_RESET (0x100ll)
#define OTX_CPT_PF_VFX_MBOXX(b, c) (0x8001000ll | (u64)(b) << 20 | \
(u64)(c) << 8)
+/* OcteonTX CPT VF registers */
+#define OTX_CPT_VQX_CTL(b) (0x100ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_SADDR(b) (0x200ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_WAIT(b) (0x400ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_INPROG(b) (0x410ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE(b) (0x420ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_ACK(b) (0x440ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_INT_W1S(b) (0x460ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_INT_W1C(b) (0x468ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_ENA_W1S(b) (0x470ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DONE_ENA_W1C(b) (0x478ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_MISC_INT(b) (0x500ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_MISC_INT_W1S(b) (0x508ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_MISC_ENA_W1S(b) (0x510ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_MISC_ENA_W1C(b) (0x518ll | (u64)(b) << 20)
+#define OTX_CPT_VQX_DOORBELL(b) (0x600ll | (u64)(b) << 20)
+#define OTX_CPT_VFX_PF_MBOXX(b, c) (0x1000ll | ((b) << 20) | ((c) << 3))
+
+/*
+ * Enumeration otx_cpt_ucode_error_code_e
+ *
+ * Enumerates ucode errors
+ */
+enum otx_cpt_ucode_error_code_e {
+ CPT_NO_UCODE_ERROR = 0x00,
+ ERR_OPCODE_UNSUPPORTED = 0x01,
+
+ /* Scatter gather */
+ ERR_SCATTER_GATHER_WRITE_LENGTH = 0x02,
+ ERR_SCATTER_GATHER_LIST = 0x03,
+ ERR_SCATTER_GATHER_NOT_SUPPORTED = 0x04,
+
+};
+
+/*
+ * Enumeration otx_cpt_comp_e
+ *
+ * CPT OcteonTX Completion Enumeration
+ * Enumerates the values of CPT_RES_S[COMPCODE].
+ */
+enum otx_cpt_comp_e {
+ CPT_COMP_E_NOTDONE = 0x00,
+ CPT_COMP_E_GOOD = 0x01,
+ CPT_COMP_E_FAULT = 0x02,
+ CPT_COMP_E_SWERR = 0x03,
+ CPT_COMP_E_HWERR = 0x04,
+ CPT_COMP_E_LAST_ENTRY = 0x05
+};
+
+/*
+ * Enumeration otx_cpt_vf_int_vec_e
+ *
+ * CPT OcteonTX VF MSI-X Vector Enumeration
+ * Enumerates the MSI-X interrupt vectors.
+ */
+enum otx_cpt_vf_int_vec_e {
+ CPT_VF_INT_VEC_E_MISC = 0x00,
+ CPT_VF_INT_VEC_E_DONE = 0x01
+};
+
+/*
+ * Structure cpt_inst_s
+ *
+ * CPT Instruction Structure
+ * This structure specifies the instruction layout. Instructions are
+ * stored in memory as little-endian unless CPT()_PF_Q()_CTL[INST_BE] is set.
+ * cpt_inst_s_s
+ * Word 0
+ * doneint:1 Done interrupt.
+ * 0 = No interrupts related to this instruction.
+ * 1 = When the instruction completes, CPT()_VQ()_DONE[DONE] will be
+ * incremented,and based on the rules described there an interrupt may
+ * occur.
+ * Word 1
+ * res_addr [127: 64] Result IOVA.
+ * If nonzero, specifies where to write CPT_RES_S.
+ * If zero, no result structure will be written.
+ * Address must be 16-byte aligned.
+ * Bits <63:49> are ignored by hardware; software should use a
+ * sign-extended bit <48> for forward compatibility.
+ * Word 2
+ * grp:10 [171:162] If [WQ_PTR] is nonzero, the SSO guest-group to use when
+ * CPT submits work SSO.
+ * For the SSO to not discard the add-work request, FPA_PF_MAP() must map
+ * [GRP] and CPT()_PF_Q()_GMCTL[GMID] as valid.
+ * tt:2 [161:160] If [WQ_PTR] is nonzero, the SSO tag type to use when CPT
+ * submits work to SSO
+ * tag:32 [159:128] If [WQ_PTR] is nonzero, the SSO tag to use when CPT
+ * submits work to SSO.
+ * Word 3
+ * wq_ptr [255:192] If [WQ_PTR] is nonzero, it is a pointer to a
+ * work-queue entry that CPT submits work to SSO after all context,
+ * output data, and result write operations are visible to other
+ * CNXXXX units and the cores. Bits <2:0> must be zero.
+ * Bits <63:49> are ignored by hardware; software should
+ * use a sign-extended bit <48> for forward compatibility.
+ * Internal:
+ * Bits <63:49>, <2:0> are ignored by hardware, treated as always 0x0.
+ * Word 4
+ * ei0; [319:256] Engine instruction word 0. Passed to the AE/SE.
+ * Word 5
+ * ei1; [383:320] Engine instruction word 1. Passed to the AE/SE.
+ * Word 6
+ * ei2; [447:384] Engine instruction word 1. Passed to the AE/SE.
+ * Word 7
+ * ei3; [511:448] Engine instruction word 1. Passed to the AE/SE.
+ *
+ */
+union otx_cpt_inst_s {
+ u64 u[8];
+
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_17_63:47;
+ u64 doneint:1;
+ u64 reserved_0_15:16;
+#else /* Word 0 - Little Endian */
+ u64 reserved_0_15:16;
+ u64 doneint:1;
+ u64 reserved_17_63:47;
+#endif /* Word 0 - End */
+ u64 res_addr;
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 2 - Big Endian */
+ u64 reserved_172_191:20;
+ u64 grp:10;
+ u64 tt:2;
+ u64 tag:32;
+#else /* Word 2 - Little Endian */
+ u64 tag:32;
+ u64 tt:2;
+ u64 grp:10;
+ u64 reserved_172_191:20;
+#endif /* Word 2 - End */
+ u64 wq_ptr;
+ u64 ei0;
+ u64 ei1;
+ u64 ei2;
+ u64 ei3;
+ } s;
+};
+
+/*
+ * Structure cpt_res_s
+ *
+ * CPT Result Structure
+ * The CPT coprocessor writes the result structure after it completes a
+ * CPT_INST_S instruction. The result structure is exactly 16 bytes, and
+ * each instruction completion produces exactly one result structure.
+ *
+ * This structure is stored in memory as little-endian unless
+ * CPT()_PF_Q()_CTL[INST_BE] is set.
+ * cpt_res_s_s
+ * Word 0
+ * doneint:1 [16:16] Done interrupt. This bit is copied from the
+ * corresponding instruction's CPT_INST_S[DONEINT].
+ * compcode:8 [7:0] Indicates completion/error status of the CPT coprocessor
+ * for the associated instruction, as enumerated by CPT_COMP_E.
+ * Core software may write the memory location containing [COMPCODE] to
+ * 0x0 before ringing the doorbell, and then poll for completion by
+ * checking for a nonzero value.
+ * Once the core observes a nonzero [COMPCODE] value in this case,the CPT
+ * coprocessor will have also completed L2/DRAM write operations.
+ * Word 1
+ * reserved
+ *
+ */
+union otx_cpt_res_s {
+ u64 u[2];
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_17_63:47;
+ u64 doneint:1;
+ u64 reserved_8_15:8;
+ u64 compcode:8;
+#else /* Word 0 - Little Endian */
+ u64 compcode:8;
+ u64 reserved_8_15:8;
+ u64 doneint:1;
+ u64 reserved_17_63:47;
+#endif /* Word 0 - End */
+ u64 reserved_64_127;
+ } s;
+};
+
/*
* Register (NCB) otx_cpt#_pf_bist_status
*
#endif /* Word 0 - End */
} s;
};
-#endif /* __OTX_CPT_HW_TYPES_H */
+
+/*
+ * Register (NCB) otx_cpt#_vq#_saddr
+ *
+ * CPT Queue Starting Buffer Address Registers
+ * These registers set the instruction buffer starting address.
+ * otx_cptx_vqx_saddr_s
+ * Word0
+ * reserved_49_63:15 [63:49] Reserved.
+ * ptr:43 [48:6](R/W/H) Instruction buffer IOVA <48:6> (64-byte aligned).
+ * When written, it is the initial buffer starting address; when read,
+ * it is the next read pointer to be requested from L2C. The PTR field
+ * is overwritten with the next pointer each time that the command buffer
+ * segment is exhausted. New commands will then be read from the newly
+ * specified command buffer pointer.
+ * reserved_0_5:6 [5:0] Reserved.
+ *
+ */
+union otx_cptx_vqx_saddr {
+ u64 u;
+ struct otx_cptx_vqx_saddr_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_49_63:15;
+ u64 ptr:43;
+ u64 reserved_0_5:6;
+#else /* Word 0 - Little Endian */
+ u64 reserved_0_5:6;
+ u64 ptr:43;
+ u64 reserved_49_63:15;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_misc_ena_w1s
+ *
+ * CPT Queue Misc Interrupt Enable Set Register
+ * This register sets interrupt enable bits.
+ * otx_cptx_vqx_misc_ena_w1s_s
+ * Word0
+ * reserved_5_63:59 [63:5] Reserved.
+ * swerr:1 [4:4](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[SWERR].
+ * nwrp:1 [3:3](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[NWRP].
+ * irde:1 [2:2](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[IRDE].
+ * dovf:1 [1:1](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[DOVF].
+ * mbox:1 [0:0](R/W1S/H) Reads or sets enable for
+ * CPT(0..1)_VQ(0..63)_MISC_INT[MBOX].
+ *
+ */
+union otx_cptx_vqx_misc_ena_w1s {
+ u64 u;
+ struct otx_cptx_vqx_misc_ena_w1s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_5_63:59;
+ u64 swerr:1;
+ u64 nwrp:1;
+ u64 irde:1;
+ u64 dovf:1;
+ u64 mbox:1;
+#else /* Word 0 - Little Endian */
+ u64 mbox:1;
+ u64 dovf:1;
+ u64 irde:1;
+ u64 nwrp:1;
+ u64 swerr:1;
+ u64 reserved_5_63:59;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_doorbell
+ *
+ * CPT Queue Doorbell Registers
+ * Doorbells for the CPT instruction queues.
+ * otx_cptx_vqx_doorbell_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * dbell_cnt:20 [19:0](R/W/H) Number of instruction queue 64-bit words to add
+ * to the CPT instruction doorbell count. Readback value is the the
+ * current number of pending doorbell requests. If counter overflows
+ * CPT()_VQ()_MISC_INT[DBELL_DOVF] is set. To reset the count back to
+ * zero, write one to clear CPT()_VQ()_MISC_INT_ENA_W1C[DBELL_DOVF],
+ * then write a value of 2^20 minus the read [DBELL_CNT], then write one
+ * to CPT()_VQ()_MISC_INT_W1C[DBELL_DOVF] and
+ * CPT()_VQ()_MISC_INT_ENA_W1S[DBELL_DOVF]. Must be a multiple of 8.
+ * All CPT instructions are 8 words and require a doorbell count of
+ * multiple of 8.
+ */
+union otx_cptx_vqx_doorbell {
+ u64 u;
+ struct otx_cptx_vqx_doorbell_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 dbell_cnt:20;
+#else /* Word 0 - Little Endian */
+ u64 dbell_cnt:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_inprog
+ *
+ * CPT Queue In Progress Count Registers
+ * These registers contain the per-queue instruction in flight registers.
+ * otx_cptx_vqx_inprog_s
+ * Word0
+ * reserved_8_63:56 [63:8] Reserved.
+ * inflight:8 [7:0](RO/H) Inflight count. Counts the number of instructions
+ * for the VF for which CPT is fetching, executing or responding to
+ * instructions. However this does not include any interrupts that are
+ * awaiting software handling (CPT()_VQ()_DONE[DONE] != 0x0).
+ * A queue may not be reconfigured until:
+ * 1. CPT()_VQ()_CTL[ENA] is cleared by software.
+ * 2. [INFLIGHT] is polled until equals to zero.
+ */
+union otx_cptx_vqx_inprog {
+ u64 u;
+ struct otx_cptx_vqx_inprog_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_8_63:56;
+ u64 inflight:8;
+#else /* Word 0 - Little Endian */
+ u64 inflight:8;
+ u64 reserved_8_63:56;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_misc_int
+ *
+ * CPT Queue Misc Interrupt Register
+ * These registers contain the per-queue miscellaneous interrupts.
+ * otx_cptx_vqx_misc_int_s
+ * Word 0
+ * reserved_5_63:59 [63:5] Reserved.
+ * swerr:1 [4:4](R/W1C/H) Software error from engines.
+ * nwrp:1 [3:3](R/W1C/H) NCB result write response error.
+ * irde:1 [2:2](R/W1C/H) Instruction NCB read response error.
+ * dovf:1 [1:1](R/W1C/H) Doorbell overflow.
+ * mbox:1 [0:0](R/W1C/H) PF to VF mailbox interrupt. Set when
+ * CPT()_VF()_PF_MBOX(0) is written.
+ *
+ */
+union otx_cptx_vqx_misc_int {
+ u64 u;
+ struct otx_cptx_vqx_misc_int_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_5_63:59;
+ u64 swerr:1;
+ u64 nwrp:1;
+ u64 irde:1;
+ u64 dovf:1;
+ u64 mbox:1;
+#else /* Word 0 - Little Endian */
+ u64 mbox:1;
+ u64 dovf:1;
+ u64 irde:1;
+ u64 nwrp:1;
+ u64 swerr:1;
+ u64 reserved_5_63:59;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_done_ack
+ *
+ * CPT Queue Done Count Ack Registers
+ * This register is written by software to acknowledge interrupts.
+ * otx_cptx_vqx_done_ack_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * done_ack:20 [19:0](R/W/H) Number of decrements to CPT()_VQ()_DONE[DONE].
+ * Reads CPT()_VQ()_DONE[DONE]. Written by software to acknowledge
+ * interrupts. If CPT()_VQ()_DONE[DONE] is still nonzero the interrupt
+ * will be re-sent if the conditions described in CPT()_VQ()_DONE[DONE]
+ * are satisfied.
+ *
+ */
+union otx_cptx_vqx_done_ack {
+ u64 u;
+ struct otx_cptx_vqx_done_ack_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 done_ack:20;
+#else /* Word 0 - Little Endian */
+ u64 done_ack:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_done
+ *
+ * CPT Queue Done Count Registers
+ * These registers contain the per-queue instruction done count.
+ * cptx_vqx_done_s
+ * Word0
+ * reserved_20_63:44 [63:20] Reserved.
+ * done:20 [19:0](R/W/H) Done count. When CPT_INST_S[DONEINT] set and that
+ * instruction completes, CPT()_VQ()_DONE[DONE] is incremented when the
+ * instruction finishes. Write to this field are for diagnostic use only;
+ * instead software writes CPT()_VQ()_DONE_ACK with the number of
+ * decrements for this field.
+ * Interrupts are sent as follows:
+ * * When CPT()_VQ()_DONE[DONE] = 0, then no results are pending, the
+ * interrupt coalescing timer is held to zero, and an interrupt is not
+ * sent.
+ * * When CPT()_VQ()_DONE[DONE] != 0, then the interrupt coalescing timer
+ * counts. If the counter is >= CPT()_VQ()_DONE_WAIT[TIME_WAIT]*1024, or
+ * CPT()_VQ()_DONE[DONE] >= CPT()_VQ()_DONE_WAIT[NUM_WAIT], i.e. enough
+ * time has passed or enough results have arrived, then the interrupt is
+ * sent.
+ * * When CPT()_VQ()_DONE_ACK is written (or CPT()_VQ()_DONE is written
+ * but this is not typical), the interrupt coalescing timer restarts.
+ * Note after decrementing this interrupt equation is recomputed,
+ * for example if CPT()_VQ()_DONE[DONE] >= CPT()_VQ()_DONE_WAIT[NUM_WAIT]
+ * and because the timer is zero, the interrupt will be resent immediately.
+ * (This covers the race case between software acknowledging an interrupt
+ * and a result returning.)
+ * * When CPT()_VQ()_DONE_ENA_W1S[DONE] = 0, interrupts are not sent,
+ * but the counting described above still occurs.
+ * Since CPT instructions complete out-of-order, if software is using
+ * completion interrupts the suggested scheme is to request a DONEINT on
+ * each request, and when an interrupt arrives perform a "greedy" scan for
+ * completions; even if a later command is acknowledged first this will
+ * not result in missing a completion.
+ * Software is responsible for making sure [DONE] does not overflow;
+ * for example by insuring there are not more than 2^20-1 instructions in
+ * flight that may request interrupts.
+ *
+ */
+union otx_cptx_vqx_done {
+ u64 u;
+ struct otx_cptx_vqx_done_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_20_63:44;
+ u64 done:20;
+#else /* Word 0 - Little Endian */
+ u64 done:20;
+ u64 reserved_20_63:44;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_done_wait
+ *
+ * CPT Queue Done Interrupt Coalescing Wait Registers
+ * Specifies the per queue interrupt coalescing settings.
+ * cptx_vqx_done_wait_s
+ * Word0
+ * reserved_48_63:16 [63:48] Reserved.
+ * time_wait:16; [47:32](R/W) Time hold-off. When CPT()_VQ()_DONE[DONE] = 0
+ * or CPT()_VQ()_DONE_ACK is written a timer is cleared. When the timer
+ * reaches [TIME_WAIT]*1024 then interrupt coalescing ends.
+ * see CPT()_VQ()_DONE[DONE]. If 0x0, time coalescing is disabled.
+ * reserved_20_31:12 [31:20] Reserved.
+ * num_wait:20 [19:0](R/W) Number of messages hold-off.
+ * When CPT()_VQ()_DONE[DONE] >= [NUM_WAIT] then interrupt coalescing ends
+ * see CPT()_VQ()_DONE[DONE]. If 0x0, same behavior as 0x1.
+ *
+ */
+union otx_cptx_vqx_done_wait {
+ u64 u;
+ struct otx_cptx_vqx_done_wait_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_48_63:16;
+ u64 time_wait:16;
+ u64 reserved_20_31:12;
+ u64 num_wait:20;
+#else /* Word 0 - Little Endian */
+ u64 num_wait:20;
+ u64 reserved_20_31:12;
+ u64 time_wait:16;
+ u64 reserved_48_63:16;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_done_ena_w1s
+ *
+ * CPT Queue Done Interrupt Enable Set Registers
+ * Write 1 to these registers will enable the DONEINT interrupt for the queue.
+ * cptx_vqx_done_ena_w1s_s
+ * Word0
+ * reserved_1_63:63 [63:1] Reserved.
+ * done:1 [0:0](R/W1S/H) Write 1 will enable DONEINT for this queue.
+ * Write 0 has no effect. Read will return the enable bit.
+ */
+union otx_cptx_vqx_done_ena_w1s {
+ u64 u;
+ struct otx_cptx_vqx_done_ena_w1s_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_1_63:63;
+ u64 done:1;
+#else /* Word 0 - Little Endian */
+ u64 done:1;
+ u64 reserved_1_63:63;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Register (NCB) otx_cpt#_vq#_ctl
+ *
+ * CPT VF Queue Control Registers
+ * This register configures queues. This register should be changed (other than
+ * clearing [ENA]) only when quiescent (see CPT()_VQ()_INPROG[INFLIGHT]).
+ * cptx_vqx_ctl_s
+ * Word0
+ * reserved_1_63:63 [63:1] Reserved.
+ * ena:1 [0:0](R/W/H) Enables the logical instruction queue.
+ * See also CPT()_PF_Q()_CTL[CONT_ERR] and CPT()_VQ()_INPROG[INFLIGHT].
+ * 1 = Queue is enabled.
+ * 0 = Queue is disabled.
+ */
+union otx_cptx_vqx_ctl {
+ u64 u;
+ struct otx_cptx_vqx_ctl_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ u64 reserved_1_63:63;
+ u64 ena:1;
+#else /* Word 0 - Little Endian */
+ u64 ena:1;
+ u64 reserved_1_63:63;
+#endif /* Word 0 - End */
+ } s;
+};
+
+/*
+ * Error Address/Error Codes
+ *
+ * In the event of a severe error, microcode writes an 8-byte Error Code
+ * value (ECODE) to host memory at the Rptr address specified by the host
+ * system (in the 64-byte request).
+ *
+ * Word0
+ * [63:56](R) 8-bit completion code
+ * [55:48](R) Number of the core that reported the severe error
+ * [47:0] Lower 6 bytes of M-Inst word2. Used to assist in uniquely
+ * identifying which specific instruction caused the error. This assumes
+ * that each instruction has a unique result location (RPTR), at least
+ * for a given period of time.
+ */
+union otx_cpt_error_code {
+ u64 u;
+ struct otx_cpt_error_code_s {
+#if defined(__BIG_ENDIAN_BITFIELD) /* Word 0 - Big Endian */
+ uint64_t ccode:8;
+ uint64_t coreid:8;
+ uint64_t rptr6:48;
+#else /* Word 0 - Little Endian */
+ uint64_t rptr6:48;
+ uint64_t coreid:8;
+ uint64_t ccode:8;
+#endif /* Word 0 - End */
+ } s;
+};
+
+#endif /*__OTX_CPT_HW_TYPES_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0
+ * Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __OTX_CPTVF_H
+#define __OTX_CPTVF_H
+
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include "otx_cpt_common.h"
+#include "otx_cptvf_reqmgr.h"
+
+/* Flags to indicate the features supported */
+#define OTX_CPT_FLAG_DEVICE_READY BIT(1)
+#define otx_cpt_device_ready(cpt) ((cpt)->flags & OTX_CPT_FLAG_DEVICE_READY)
+/* Default command queue length */
+#define OTX_CPT_CMD_QLEN (4*2046)
+#define OTX_CPT_CMD_QCHUNK_SIZE 1023
+#define OTX_CPT_NUM_QS_PER_VF 1
+
+struct otx_cpt_cmd_chunk {
+ u8 *head;
+ dma_addr_t dma_addr;
+ u32 size; /* Chunk size, max OTX_CPT_INST_CHUNK_MAX_SIZE */
+ struct list_head nextchunk;
+};
+
+struct otx_cpt_cmd_queue {
+ u32 idx; /* Command queue host write idx */
+ u32 num_chunks; /* Number of command chunks */
+ struct otx_cpt_cmd_chunk *qhead;/*
+ * Command queue head, instructions
+ * are inserted here
+ */
+ struct otx_cpt_cmd_chunk *base;
+ struct list_head chead;
+};
+
+struct otx_cpt_cmd_qinfo {
+ u32 qchunksize; /* Command queue chunk size */
+ struct otx_cpt_cmd_queue queue[OTX_CPT_NUM_QS_PER_VF];
+};
+
+struct otx_cpt_pending_qinfo {
+ u32 num_queues; /* Number of queues supported */
+ struct otx_cpt_pending_queue queue[OTX_CPT_NUM_QS_PER_VF];
+};
+
+#define for_each_pending_queue(qinfo, q, i) \
+ for (i = 0, q = &qinfo->queue[i]; i < qinfo->num_queues; i++, \
+ q = &qinfo->queue[i])
+
+struct otx_cptvf_wqe {
+ struct tasklet_struct twork;
+ struct otx_cptvf *cptvf;
+};
+
+struct otx_cptvf_wqe_info {
+ struct otx_cptvf_wqe vq_wqe[OTX_CPT_NUM_QS_PER_VF];
+};
+
+struct otx_cptvf {
+ u16 flags; /* Flags to hold device status bits */
+ u8 vfid; /* Device Index 0...OTX_CPT_MAX_VF_NUM */
+ u8 num_vfs; /* Number of enabled VFs */
+ u8 vftype; /* VF type of SE_TYPE(2) or AE_TYPE(1) */
+ u8 vfgrp; /* VF group (0 - 8) */
+ u8 node; /* Operating node: Bits (46:44) in BAR0 address */
+ u8 priority; /*
+ * VF priority ring: 1-High proirity round
+ * robin ring;0-Low priority round robin ring;
+ */
+ struct pci_dev *pdev; /* Pci device handle */
+ void __iomem *reg_base; /* Register start address */
+ void *wqe_info; /* BH worker info */
+ /* MSI-X */
+ cpumask_var_t affinity_mask[OTX_CPT_VF_MSIX_VECTORS];
+ /* Command and Pending queues */
+ u32 qsize;
+ u32 num_queues;
+ struct otx_cpt_cmd_qinfo cqinfo; /* Command queue information */
+ struct otx_cpt_pending_qinfo pqinfo; /* Pending queue information */
+ /* VF-PF mailbox communication */
+ bool pf_acked;
+ bool pf_nacked;
+};
+
+int otx_cptvf_send_vf_up(struct otx_cptvf *cptvf);
+int otx_cptvf_send_vf_down(struct otx_cptvf *cptvf);
+int otx_cptvf_send_vf_to_grp_msg(struct otx_cptvf *cptvf, int group);
+int otx_cptvf_send_vf_priority_msg(struct otx_cptvf *cptvf);
+int otx_cptvf_send_vq_size_msg(struct otx_cptvf *cptvf);
+int otx_cptvf_check_pf_ready(struct otx_cptvf *cptvf);
+void otx_cptvf_handle_mbox_intr(struct otx_cptvf *cptvf);
+void otx_cptvf_write_vq_doorbell(struct otx_cptvf *cptvf, u32 val);
+
+#endif /* __OTX_CPTVF_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <crypto/aes.h>
+#include <crypto/authenc.h>
+#include <crypto/cryptd.h>
+#include <crypto/des.h>
+#include <crypto/internal/aead.h>
+#include <crypto/sha.h>
+#include <crypto/xts.h>
+#include <crypto/scatterwalk.h>
+#include <linux/rtnetlink.h>
+#include <linux/sort.h>
+#include <linux/module.h>
+#include "otx_cptvf.h"
+#include "otx_cptvf_algs.h"
+#include "otx_cptvf_reqmgr.h"
+
+#define CPT_MAX_VF_NUM 64
+/* Size of salt in AES GCM mode */
+#define AES_GCM_SALT_SIZE 4
+/* Size of IV in AES GCM mode */
+#define AES_GCM_IV_SIZE 8
+/* Size of ICV (Integrity Check Value) in AES GCM mode */
+#define AES_GCM_ICV_SIZE 16
+/* Offset of IV in AES GCM mode */
+#define AES_GCM_IV_OFFSET 8
+#define CONTROL_WORD_LEN 8
+#define KEY2_OFFSET 48
+#define DMA_MODE_FLAG(dma_mode) \
+ (((dma_mode) == OTX_CPT_DMA_GATHER_SCATTER) ? (1 << 7) : 0)
+
+/* Truncated SHA digest size */
+#define SHA1_TRUNC_DIGEST_SIZE 12
+#define SHA256_TRUNC_DIGEST_SIZE 16
+#define SHA384_TRUNC_DIGEST_SIZE 24
+#define SHA512_TRUNC_DIGEST_SIZE 32
+
+static DEFINE_MUTEX(mutex);
+static int is_crypto_registered;
+
+struct cpt_device_desc {
+ enum otx_cptpf_type pf_type;
+ struct pci_dev *dev;
+ int num_queues;
+};
+
+struct cpt_device_table {
+ atomic_t count;
+ struct cpt_device_desc desc[CPT_MAX_VF_NUM];
+};
+
+static struct cpt_device_table se_devices = {
+ .count = ATOMIC_INIT(0)
+};
+
+static struct cpt_device_table ae_devices = {
+ .count = ATOMIC_INIT(0)
+};
+
+static inline int get_se_device(struct pci_dev **pdev, int *cpu_num)
+{
+ int count, ret = 0;
+
+ count = atomic_read(&se_devices.count);
+ if (count < 1)
+ return -ENODEV;
+
+ *cpu_num = get_cpu();
+
+ if (se_devices.desc[0].pf_type == OTX_CPT_SE) {
+ /*
+ * On OcteonTX platform there is one CPT instruction queue bound
+ * to each VF. We get maximum performance if one CPT queue
+ * is available for each cpu otherwise CPT queues need to be
+ * shared between cpus.
+ */
+ if (*cpu_num >= count)
+ *cpu_num %= count;
+ *pdev = se_devices.desc[*cpu_num].dev;
+ } else {
+ pr_err("Unknown PF type %d\n", se_devices.desc[0].pf_type);
+ ret = -EINVAL;
+ }
+ put_cpu();
+
+ return ret;
+}
+
+static inline int validate_hmac_cipher_null(struct otx_cpt_req_info *cpt_req)
+{
+ struct otx_cpt_req_ctx *rctx;
+ struct aead_request *req;
+ struct crypto_aead *tfm;
+
+ req = container_of(cpt_req->areq, struct aead_request, base);
+ tfm = crypto_aead_reqtfm(req);
+ rctx = aead_request_ctx(req);
+ if (memcmp(rctx->fctx.hmac.s.hmac_calc,
+ rctx->fctx.hmac.s.hmac_recv,
+ crypto_aead_authsize(tfm)) != 0)
+ return -EBADMSG;
+
+ return 0;
+}
+
+static void otx_cpt_aead_callback(int status, void *arg1, void *arg2)
+{
+ struct otx_cpt_info_buffer *cpt_info = arg2;
+ struct crypto_async_request *areq = arg1;
+ struct otx_cpt_req_info *cpt_req;
+ struct pci_dev *pdev;
+
+ cpt_req = cpt_info->req;
+ if (!status) {
+ /*
+ * When selected cipher is NULL we need to manually
+ * verify whether calculated hmac value matches
+ * received hmac value
+ */
+ if (cpt_req->req_type == OTX_CPT_AEAD_ENC_DEC_NULL_REQ &&
+ !cpt_req->is_enc)
+ status = validate_hmac_cipher_null(cpt_req);
+ }
+ if (cpt_info) {
+ pdev = cpt_info->pdev;
+ do_request_cleanup(pdev, cpt_info);
+ }
+ if (areq)
+ areq->complete(areq, status);
+}
+
+static void output_iv_copyback(struct crypto_async_request *areq)
+{
+ struct otx_cpt_req_info *req_info;
+ struct skcipher_request *sreq;
+ struct crypto_skcipher *stfm;
+ struct otx_cpt_req_ctx *rctx;
+ struct otx_cpt_enc_ctx *ctx;
+ u32 start, ivsize;
+
+ sreq = container_of(areq, struct skcipher_request, base);
+ stfm = crypto_skcipher_reqtfm(sreq);
+ ctx = crypto_skcipher_ctx(stfm);
+ if (ctx->cipher_type == OTX_CPT_AES_CBC ||
+ ctx->cipher_type == OTX_CPT_DES3_CBC) {
+ rctx = skcipher_request_ctx(sreq);
+ req_info = &rctx->cpt_req;
+ ivsize = crypto_skcipher_ivsize(stfm);
+ start = sreq->cryptlen - ivsize;
+
+ if (req_info->is_enc) {
+ scatterwalk_map_and_copy(sreq->iv, sreq->dst, start,
+ ivsize, 0);
+ } else {
+ if (sreq->src != sreq->dst) {
+ scatterwalk_map_and_copy(sreq->iv, sreq->src,
+ start, ivsize, 0);
+ } else {
+ memcpy(sreq->iv, req_info->iv_out, ivsize);
+ kfree(req_info->iv_out);
+ }
+ }
+ }
+}
+
+static void otx_cpt_skcipher_callback(int status, void *arg1, void *arg2)
+{
+ struct otx_cpt_info_buffer *cpt_info = arg2;
+ struct crypto_async_request *areq = arg1;
+ struct pci_dev *pdev;
+
+ if (areq) {
+ if (!status)
+ output_iv_copyback(areq);
+ if (cpt_info) {
+ pdev = cpt_info->pdev;
+ do_request_cleanup(pdev, cpt_info);
+ }
+ areq->complete(areq, status);
+ }
+}
+
+static inline void update_input_data(struct otx_cpt_req_info *req_info,
+ struct scatterlist *inp_sg,
+ u32 nbytes, u32 *argcnt)
+{
+ req_info->req.dlen += nbytes;
+
+ while (nbytes) {
+ u32 len = min(nbytes, inp_sg->length);
+ u8 *ptr = sg_virt(inp_sg);
+
+ req_info->in[*argcnt].vptr = (void *)ptr;
+ req_info->in[*argcnt].size = len;
+ nbytes -= len;
+ ++(*argcnt);
+ inp_sg = sg_next(inp_sg);
+ }
+}
+
+static inline void update_output_data(struct otx_cpt_req_info *req_info,
+ struct scatterlist *outp_sg,
+ u32 offset, u32 nbytes, u32 *argcnt)
+{
+ req_info->rlen += nbytes;
+
+ while (nbytes) {
+ u32 len = min(nbytes, outp_sg->length - offset);
+ u8 *ptr = sg_virt(outp_sg);
+
+ req_info->out[*argcnt].vptr = (void *) (ptr + offset);
+ req_info->out[*argcnt].size = len;
+ nbytes -= len;
+ ++(*argcnt);
+ offset = 0;
+ outp_sg = sg_next(outp_sg);
+ }
+}
+
+static inline u32 create_ctx_hdr(struct skcipher_request *req, u32 enc,
+ u32 *argcnt)
+{
+ struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req);
+ struct otx_cpt_req_ctx *rctx = skcipher_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(stfm);
+ struct otx_cpt_enc_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct otx_cpt_fc_ctx *fctx = &rctx->fctx;
+ int ivsize = crypto_skcipher_ivsize(stfm);
+ u32 start = req->cryptlen - ivsize;
+ u64 *ctrl_flags = NULL;
+ gfp_t flags;
+
+ flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
+ req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
+
+ req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_FC |
+ DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
+ if (enc) {
+ req_info->req.opcode.s.minor = 2;
+ } else {
+ req_info->req.opcode.s.minor = 3;
+ if ((ctx->cipher_type == OTX_CPT_AES_CBC ||
+ ctx->cipher_type == OTX_CPT_DES3_CBC) &&
+ req->src == req->dst) {
+ req_info->iv_out = kmalloc(ivsize, flags);
+ if (!req_info->iv_out)
+ return -ENOMEM;
+
+ scatterwalk_map_and_copy(req_info->iv_out, req->src,
+ start, ivsize, 0);
+ }
+ }
+ /* Encryption data length */
+ req_info->req.param1 = req->cryptlen;
+ /* Authentication data length */
+ req_info->req.param2 = 0;
+
+ fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type;
+ fctx->enc.enc_ctrl.e.aes_key = ctx->key_type;
+ fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_CPTR;
+
+ if (ctx->cipher_type == OTX_CPT_AES_XTS)
+ memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len * 2);
+ else
+ memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len);
+
+ memcpy(fctx->enc.encr_iv, req->iv, crypto_skcipher_ivsize(stfm));
+
+ ctrl_flags = (u64 *)&fctx->enc.enc_ctrl.flags;
+ *ctrl_flags = cpu_to_be64(*ctrl_flags);
+
+ /*
+ * Storing Packet Data Information in offset
+ * Control Word First 8 bytes
+ */
+ req_info->in[*argcnt].vptr = (u8 *)&rctx->ctrl_word;
+ req_info->in[*argcnt].size = CONTROL_WORD_LEN;
+ req_info->req.dlen += CONTROL_WORD_LEN;
+ ++(*argcnt);
+
+ req_info->in[*argcnt].vptr = (u8 *)fctx;
+ req_info->in[*argcnt].size = sizeof(struct otx_cpt_fc_ctx);
+ req_info->req.dlen += sizeof(struct otx_cpt_fc_ctx);
+
+ ++(*argcnt);
+
+ return 0;
+}
+
+static inline u32 create_input_list(struct skcipher_request *req, u32 enc,
+ u32 enc_iv_len)
+{
+ struct otx_cpt_req_ctx *rctx = skcipher_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 argcnt = 0;
+ int ret;
+
+ ret = create_ctx_hdr(req, enc, &argcnt);
+ if (ret)
+ return ret;
+
+ update_input_data(req_info, req->src, req->cryptlen, &argcnt);
+ req_info->incnt = argcnt;
+
+ return 0;
+}
+
+static inline void create_output_list(struct skcipher_request *req,
+ u32 enc_iv_len)
+{
+ struct otx_cpt_req_ctx *rctx = skcipher_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 argcnt = 0;
+
+ /*
+ * OUTPUT Buffer Processing
+ * AES encryption/decryption output would be
+ * received in the following format
+ *
+ * ------IV--------|------ENCRYPTED/DECRYPTED DATA-----|
+ * [ 16 Bytes/ [ Request Enc/Dec/ DATA Len AES CBC ]
+ */
+ update_output_data(req_info, req->dst, 0, req->cryptlen, &argcnt);
+ req_info->outcnt = argcnt;
+}
+
+static inline int cpt_enc_dec(struct skcipher_request *req, u32 enc)
+{
+ struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req);
+ struct otx_cpt_req_ctx *rctx = skcipher_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 enc_iv_len = crypto_skcipher_ivsize(stfm);
+ struct pci_dev *pdev;
+ int status, cpu_num;
+
+ /* Validate that request doesn't exceed maximum CPT supported size */
+ if (req->cryptlen > OTX_CPT_MAX_REQ_SIZE)
+ return -E2BIG;
+
+ /* Clear control words */
+ rctx->ctrl_word.flags = 0;
+ rctx->fctx.enc.enc_ctrl.flags = 0;
+
+ status = create_input_list(req, enc, enc_iv_len);
+ if (status)
+ return status;
+ create_output_list(req, enc_iv_len);
+
+ status = get_se_device(&pdev, &cpu_num);
+ if (status)
+ return status;
+
+ req_info->callback = (void *)otx_cpt_skcipher_callback;
+ req_info->areq = &req->base;
+ req_info->req_type = OTX_CPT_ENC_DEC_REQ;
+ req_info->is_enc = enc;
+ req_info->is_trunc_hmac = false;
+ req_info->ctrl.s.grp = 0;
+
+ /*
+ * We perform an asynchronous send and once
+ * the request is completed the driver would
+ * intimate through registered call back functions
+ */
+ status = otx_cpt_do_request(pdev, req_info, cpu_num);
+
+ return status;
+}
+
+static int otx_cpt_skcipher_encrypt(struct skcipher_request *req)
+{
+ return cpt_enc_dec(req, true);
+}
+
+static int otx_cpt_skcipher_decrypt(struct skcipher_request *req)
+{
+ return cpt_enc_dec(req, false);
+}
+
+static int otx_cpt_skcipher_xts_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
+ const u8 *key2 = key + (keylen / 2);
+ const u8 *key1 = key;
+ int ret;
+
+ ret = xts_check_key(crypto_skcipher_tfm(tfm), key, keylen);
+ if (ret)
+ return ret;
+ ctx->key_len = keylen;
+ memcpy(ctx->enc_key, key1, keylen / 2);
+ memcpy(ctx->enc_key + KEY2_OFFSET, key2, keylen / 2);
+ ctx->cipher_type = OTX_CPT_AES_XTS;
+ switch (ctx->key_len) {
+ case 2 * AES_KEYSIZE_128:
+ ctx->key_type = OTX_CPT_AES_128_BIT;
+ break;
+ case 2 * AES_KEYSIZE_256:
+ ctx->key_type = OTX_CPT_AES_256_BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int cpt_des_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ u32 keylen, u8 cipher_type)
+{
+ struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ if (keylen != DES3_EDE_KEY_SIZE)
+ return -EINVAL;
+
+ ctx->key_len = keylen;
+ ctx->cipher_type = cipher_type;
+
+ memcpy(ctx->enc_key, key, keylen);
+
+ return 0;
+}
+
+static int cpt_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ u32 keylen, u8 cipher_type)
+{
+ struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ ctx->key_type = OTX_CPT_AES_128_BIT;
+ break;
+ case AES_KEYSIZE_192:
+ ctx->key_type = OTX_CPT_AES_192_BIT;
+ break;
+ case AES_KEYSIZE_256:
+ ctx->key_type = OTX_CPT_AES_256_BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ctx->key_len = keylen;
+ ctx->cipher_type = cipher_type;
+
+ memcpy(ctx->enc_key, key, keylen);
+
+ return 0;
+}
+
+static int otx_cpt_skcipher_cbc_aes_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_CBC);
+}
+
+static int otx_cpt_skcipher_ecb_aes_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_ECB);
+}
+
+static int otx_cpt_skcipher_cfb_aes_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_CFB);
+}
+
+static int otx_cpt_skcipher_cbc_des3_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ return cpt_des_setkey(tfm, key, keylen, OTX_CPT_DES3_CBC);
+}
+
+static int otx_cpt_skcipher_ecb_des3_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, u32 keylen)
+{
+ return cpt_des_setkey(tfm, key, keylen, OTX_CPT_DES3_ECB);
+}
+
+static int otx_cpt_enc_dec_init(struct crypto_skcipher *tfm)
+{
+ struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ memset(ctx, 0, sizeof(*ctx));
+ /*
+ * Additional memory for skcipher_request is
+ * allocated since the cryptd daemon uses
+ * this memory for request_ctx information
+ */
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct otx_cpt_req_ctx) +
+ sizeof(struct skcipher_request));
+
+ return 0;
+}
+
+static int cpt_aead_init(struct crypto_aead *tfm, u8 cipher_type, u8 mac_type)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(tfm);
+
+ ctx->cipher_type = cipher_type;
+ ctx->mac_type = mac_type;
+
+ /*
+ * When selected cipher is NULL we use HMAC opcode instead of
+ * FLEXICRYPTO opcode therefore we don't need to use HASH algorithms
+ * for calculating ipad and opad
+ */
+ if (ctx->cipher_type != OTX_CPT_CIPHER_NULL) {
+ switch (ctx->mac_type) {
+ case OTX_CPT_SHA1:
+ ctx->hashalg = crypto_alloc_shash("sha1", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(ctx->hashalg))
+ return PTR_ERR(ctx->hashalg);
+ break;
+
+ case OTX_CPT_SHA256:
+ ctx->hashalg = crypto_alloc_shash("sha256", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(ctx->hashalg))
+ return PTR_ERR(ctx->hashalg);
+ break;
+
+ case OTX_CPT_SHA384:
+ ctx->hashalg = crypto_alloc_shash("sha384", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(ctx->hashalg))
+ return PTR_ERR(ctx->hashalg);
+ break;
+
+ case OTX_CPT_SHA512:
+ ctx->hashalg = crypto_alloc_shash("sha512", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(ctx->hashalg))
+ return PTR_ERR(ctx->hashalg);
+ break;
+ }
+ }
+
+ crypto_aead_set_reqsize(tfm, sizeof(struct otx_cpt_req_ctx));
+
+ return 0;
+}
+
+static int otx_cpt_aead_cbc_aes_sha1_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA1);
+}
+
+static int otx_cpt_aead_cbc_aes_sha256_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA256);
+}
+
+static int otx_cpt_aead_cbc_aes_sha384_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA384);
+}
+
+static int otx_cpt_aead_cbc_aes_sha512_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA512);
+}
+
+static int otx_cpt_aead_ecb_null_sha1_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA1);
+}
+
+static int otx_cpt_aead_ecb_null_sha256_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA256);
+}
+
+static int otx_cpt_aead_ecb_null_sha384_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA384);
+}
+
+static int otx_cpt_aead_ecb_null_sha512_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA512);
+}
+
+static int otx_cpt_aead_gcm_aes_init(struct crypto_aead *tfm)
+{
+ return cpt_aead_init(tfm, OTX_CPT_AES_GCM, OTX_CPT_MAC_NULL);
+}
+
+static void otx_cpt_aead_exit(struct crypto_aead *tfm)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(tfm);
+
+ kfree(ctx->ipad);
+ kfree(ctx->opad);
+ if (ctx->hashalg)
+ crypto_free_shash(ctx->hashalg);
+ kfree(ctx->sdesc);
+}
+
+/*
+ * This is the Integrity Check Value validation (aka the authentication tag
+ * length)
+ */
+static int otx_cpt_aead_set_authsize(struct crypto_aead *tfm,
+ unsigned int authsize)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(tfm);
+
+ switch (ctx->mac_type) {
+ case OTX_CPT_SHA1:
+ if (authsize != SHA1_DIGEST_SIZE &&
+ authsize != SHA1_TRUNC_DIGEST_SIZE)
+ return -EINVAL;
+
+ if (authsize == SHA1_TRUNC_DIGEST_SIZE)
+ ctx->is_trunc_hmac = true;
+ break;
+
+ case OTX_CPT_SHA256:
+ if (authsize != SHA256_DIGEST_SIZE &&
+ authsize != SHA256_TRUNC_DIGEST_SIZE)
+ return -EINVAL;
+
+ if (authsize == SHA256_TRUNC_DIGEST_SIZE)
+ ctx->is_trunc_hmac = true;
+ break;
+
+ case OTX_CPT_SHA384:
+ if (authsize != SHA384_DIGEST_SIZE &&
+ authsize != SHA384_TRUNC_DIGEST_SIZE)
+ return -EINVAL;
+
+ if (authsize == SHA384_TRUNC_DIGEST_SIZE)
+ ctx->is_trunc_hmac = true;
+ break;
+
+ case OTX_CPT_SHA512:
+ if (authsize != SHA512_DIGEST_SIZE &&
+ authsize != SHA512_TRUNC_DIGEST_SIZE)
+ return -EINVAL;
+
+ if (authsize == SHA512_TRUNC_DIGEST_SIZE)
+ ctx->is_trunc_hmac = true;
+ break;
+
+ case OTX_CPT_MAC_NULL:
+ if (ctx->cipher_type == OTX_CPT_AES_GCM) {
+ if (authsize != AES_GCM_ICV_SIZE)
+ return -EINVAL;
+ } else
+ return -EINVAL;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ tfm->authsize = authsize;
+ return 0;
+}
+
+static struct otx_cpt_sdesc *alloc_sdesc(struct crypto_shash *alg)
+{
+ struct otx_cpt_sdesc *sdesc;
+ int size;
+
+ size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
+ sdesc = kmalloc(size, GFP_KERNEL);
+ if (!sdesc)
+ return NULL;
+
+ sdesc->shash.tfm = alg;
+
+ return sdesc;
+}
+
+static inline void swap_data32(void *buf, u32 len)
+{
+ u32 *store = (u32 *) buf;
+ int i = 0;
+
+ for (i = 0 ; i < len/sizeof(u32); i++, store++)
+ *store = cpu_to_be32(*store);
+}
+
+static inline void swap_data64(void *buf, u32 len)
+{
+ u64 *store = (u64 *) buf;
+ int i = 0;
+
+ for (i = 0 ; i < len/sizeof(u64); i++, store++)
+ *store = cpu_to_be64(*store);
+}
+
+static int copy_pad(u8 mac_type, u8 *out_pad, u8 *in_pad)
+{
+ struct sha512_state *sha512;
+ struct sha256_state *sha256;
+ struct sha1_state *sha1;
+
+ switch (mac_type) {
+ case OTX_CPT_SHA1:
+ sha1 = (struct sha1_state *) in_pad;
+ swap_data32(sha1->state, SHA1_DIGEST_SIZE);
+ memcpy(out_pad, &sha1->state, SHA1_DIGEST_SIZE);
+ break;
+
+ case OTX_CPT_SHA256:
+ sha256 = (struct sha256_state *) in_pad;
+ swap_data32(sha256->state, SHA256_DIGEST_SIZE);
+ memcpy(out_pad, &sha256->state, SHA256_DIGEST_SIZE);
+ break;
+
+ case OTX_CPT_SHA384:
+ case OTX_CPT_SHA512:
+ sha512 = (struct sha512_state *) in_pad;
+ swap_data64(sha512->state, SHA512_DIGEST_SIZE);
+ memcpy(out_pad, &sha512->state, SHA512_DIGEST_SIZE);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int aead_hmac_init(struct crypto_aead *cipher)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(cipher);
+ int state_size = crypto_shash_statesize(ctx->hashalg);
+ int ds = crypto_shash_digestsize(ctx->hashalg);
+ int bs = crypto_shash_blocksize(ctx->hashalg);
+ int authkeylen = ctx->auth_key_len;
+ u8 *ipad = NULL, *opad = NULL;
+ int ret = 0, icount = 0;
+
+ ctx->sdesc = alloc_sdesc(ctx->hashalg);
+ if (!ctx->sdesc)
+ return -ENOMEM;
+
+ ctx->ipad = kzalloc(bs, GFP_KERNEL);
+ if (!ctx->ipad) {
+ ret = -ENOMEM;
+ goto calc_fail;
+ }
+
+ ctx->opad = kzalloc(bs, GFP_KERNEL);
+ if (!ctx->opad) {
+ ret = -ENOMEM;
+ goto calc_fail;
+ }
+
+ ipad = kzalloc(state_size, GFP_KERNEL);
+ if (!ipad) {
+ ret = -ENOMEM;
+ goto calc_fail;
+ }
+
+ opad = kzalloc(state_size, GFP_KERNEL);
+ if (!opad) {
+ ret = -ENOMEM;
+ goto calc_fail;
+ }
+
+ if (authkeylen > bs) {
+ ret = crypto_shash_digest(&ctx->sdesc->shash, ctx->key,
+ authkeylen, ipad);
+ if (ret)
+ goto calc_fail;
+
+ authkeylen = ds;
+ } else {
+ memcpy(ipad, ctx->key, authkeylen);
+ }
+
+ memset(ipad + authkeylen, 0, bs - authkeylen);
+ memcpy(opad, ipad, bs);
+
+ for (icount = 0; icount < bs; icount++) {
+ ipad[icount] ^= 0x36;
+ opad[icount] ^= 0x5c;
+ }
+
+ /*
+ * Partial Hash calculated from the software
+ * algorithm is retrieved for IPAD & OPAD
+ */
+
+ /* IPAD Calculation */
+ crypto_shash_init(&ctx->sdesc->shash);
+ crypto_shash_update(&ctx->sdesc->shash, ipad, bs);
+ crypto_shash_export(&ctx->sdesc->shash, ipad);
+ ret = copy_pad(ctx->mac_type, ctx->ipad, ipad);
+ if (ret)
+ goto calc_fail;
+
+ /* OPAD Calculation */
+ crypto_shash_init(&ctx->sdesc->shash);
+ crypto_shash_update(&ctx->sdesc->shash, opad, bs);
+ crypto_shash_export(&ctx->sdesc->shash, opad);
+ ret = copy_pad(ctx->mac_type, ctx->opad, opad);
+ if (ret)
+ goto calc_fail;
+
+ kfree(ipad);
+ kfree(opad);
+
+ return 0;
+
+calc_fail:
+ kfree(ctx->ipad);
+ ctx->ipad = NULL;
+ kfree(ctx->opad);
+ ctx->opad = NULL;
+ kfree(ipad);
+ kfree(opad);
+ kfree(ctx->sdesc);
+ ctx->sdesc = NULL;
+
+ return ret;
+}
+
+static int otx_cpt_aead_cbc_aes_sha_setkey(struct crypto_aead *cipher,
+ const unsigned char *key,
+ unsigned int keylen)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(cipher);
+ struct crypto_authenc_key_param *param;
+ int enckeylen = 0, authkeylen = 0;
+ struct rtattr *rta = (void *)key;
+ int status = -EINVAL;
+
+ if (!RTA_OK(rta, keylen))
+ goto badkey;
+
+ if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
+ goto badkey;
+
+ if (RTA_PAYLOAD(rta) < sizeof(*param))
+ goto badkey;
+
+ param = RTA_DATA(rta);
+ enckeylen = be32_to_cpu(param->enckeylen);
+ key += RTA_ALIGN(rta->rta_len);
+ keylen -= RTA_ALIGN(rta->rta_len);
+ if (keylen < enckeylen)
+ goto badkey;
+
+ if (keylen > OTX_CPT_MAX_KEY_SIZE)
+ goto badkey;
+
+ authkeylen = keylen - enckeylen;
+ memcpy(ctx->key, key, keylen);
+
+ switch (enckeylen) {
+ case AES_KEYSIZE_128:
+ ctx->key_type = OTX_CPT_AES_128_BIT;
+ break;
+ case AES_KEYSIZE_192:
+ ctx->key_type = OTX_CPT_AES_192_BIT;
+ break;
+ case AES_KEYSIZE_256:
+ ctx->key_type = OTX_CPT_AES_256_BIT;
+ break;
+ default:
+ /* Invalid key length */
+ goto badkey;
+ }
+
+ ctx->enc_key_len = enckeylen;
+ ctx->auth_key_len = authkeylen;
+
+ status = aead_hmac_init(cipher);
+ if (status)
+ goto badkey;
+
+ return 0;
+badkey:
+ return status;
+}
+
+static int otx_cpt_aead_ecb_null_sha_setkey(struct crypto_aead *cipher,
+ const unsigned char *key,
+ unsigned int keylen)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(cipher);
+ struct crypto_authenc_key_param *param;
+ struct rtattr *rta = (void *)key;
+ int enckeylen = 0;
+
+ if (!RTA_OK(rta, keylen))
+ goto badkey;
+
+ if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
+ goto badkey;
+
+ if (RTA_PAYLOAD(rta) < sizeof(*param))
+ goto badkey;
+
+ param = RTA_DATA(rta);
+ enckeylen = be32_to_cpu(param->enckeylen);
+ key += RTA_ALIGN(rta->rta_len);
+ keylen -= RTA_ALIGN(rta->rta_len);
+ if (enckeylen != 0)
+ goto badkey;
+
+ if (keylen > OTX_CPT_MAX_KEY_SIZE)
+ goto badkey;
+
+ memcpy(ctx->key, key, keylen);
+ ctx->enc_key_len = enckeylen;
+ ctx->auth_key_len = keylen;
+ return 0;
+badkey:
+ return -EINVAL;
+}
+
+static int otx_cpt_aead_gcm_aes_setkey(struct crypto_aead *cipher,
+ const unsigned char *key,
+ unsigned int keylen)
+{
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(cipher);
+
+ /*
+ * For aes gcm we expect to get encryption key (16, 24, 32 bytes)
+ * and salt (4 bytes)
+ */
+ switch (keylen) {
+ case AES_KEYSIZE_128 + AES_GCM_SALT_SIZE:
+ ctx->key_type = OTX_CPT_AES_128_BIT;
+ ctx->enc_key_len = AES_KEYSIZE_128;
+ break;
+ case AES_KEYSIZE_192 + AES_GCM_SALT_SIZE:
+ ctx->key_type = OTX_CPT_AES_192_BIT;
+ ctx->enc_key_len = AES_KEYSIZE_192;
+ break;
+ case AES_KEYSIZE_256 + AES_GCM_SALT_SIZE:
+ ctx->key_type = OTX_CPT_AES_256_BIT;
+ ctx->enc_key_len = AES_KEYSIZE_256;
+ break;
+ default:
+ /* Invalid key and salt length */
+ return -EINVAL;
+ }
+
+ /* Store encryption key and salt */
+ memcpy(ctx->key, key, keylen);
+
+ return 0;
+}
+
+static inline u32 create_aead_ctx_hdr(struct aead_request *req, u32 enc,
+ u32 *argcnt)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ struct otx_cpt_fc_ctx *fctx = &rctx->fctx;
+ int mac_len = crypto_aead_authsize(tfm);
+ int ds;
+
+ rctx->ctrl_word.e.enc_data_offset = req->assoclen;
+
+ switch (ctx->cipher_type) {
+ case OTX_CPT_AES_CBC:
+ fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_CPTR;
+ /* Copy encryption key to context */
+ memcpy(fctx->enc.encr_key, ctx->key + ctx->auth_key_len,
+ ctx->enc_key_len);
+ /* Copy IV to context */
+ memcpy(fctx->enc.encr_iv, req->iv, crypto_aead_ivsize(tfm));
+
+ ds = crypto_shash_digestsize(ctx->hashalg);
+ if (ctx->mac_type == OTX_CPT_SHA384)
+ ds = SHA512_DIGEST_SIZE;
+ if (ctx->ipad)
+ memcpy(fctx->hmac.e.ipad, ctx->ipad, ds);
+ if (ctx->opad)
+ memcpy(fctx->hmac.e.opad, ctx->opad, ds);
+ break;
+
+ case OTX_CPT_AES_GCM:
+ fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_DPTR;
+ /* Copy encryption key to context */
+ memcpy(fctx->enc.encr_key, ctx->key, ctx->enc_key_len);
+ /* Copy salt to context */
+ memcpy(fctx->enc.encr_iv, ctx->key + ctx->enc_key_len,
+ AES_GCM_SALT_SIZE);
+
+ rctx->ctrl_word.e.iv_offset = req->assoclen - AES_GCM_IV_OFFSET;
+ break;
+
+ default:
+ /* Unknown cipher type */
+ return -EINVAL;
+ }
+ rctx->ctrl_word.flags = cpu_to_be64(rctx->ctrl_word.flags);
+
+ req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
+ req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
+ req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_FC |
+ DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
+ if (enc) {
+ req_info->req.opcode.s.minor = 2;
+ req_info->req.param1 = req->cryptlen;
+ req_info->req.param2 = req->cryptlen + req->assoclen;
+ } else {
+ req_info->req.opcode.s.minor = 3;
+ req_info->req.param1 = req->cryptlen - mac_len;
+ req_info->req.param2 = req->cryptlen + req->assoclen - mac_len;
+ }
+
+ fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type;
+ fctx->enc.enc_ctrl.e.aes_key = ctx->key_type;
+ fctx->enc.enc_ctrl.e.mac_type = ctx->mac_type;
+ fctx->enc.enc_ctrl.e.mac_len = mac_len;
+ fctx->enc.enc_ctrl.flags = cpu_to_be64(fctx->enc.enc_ctrl.flags);
+
+ /*
+ * Storing Packet Data Information in offset
+ * Control Word First 8 bytes
+ */
+ req_info->in[*argcnt].vptr = (u8 *)&rctx->ctrl_word;
+ req_info->in[*argcnt].size = CONTROL_WORD_LEN;
+ req_info->req.dlen += CONTROL_WORD_LEN;
+ ++(*argcnt);
+
+ req_info->in[*argcnt].vptr = (u8 *)fctx;
+ req_info->in[*argcnt].size = sizeof(struct otx_cpt_fc_ctx);
+ req_info->req.dlen += sizeof(struct otx_cpt_fc_ctx);
+ ++(*argcnt);
+
+ return 0;
+}
+
+static inline u32 create_hmac_ctx_hdr(struct aead_request *req, u32 *argcnt,
+ u32 enc)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+
+ req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
+ req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
+ req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_HMAC |
+ DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
+ req_info->is_trunc_hmac = ctx->is_trunc_hmac;
+
+ req_info->req.opcode.s.minor = 0;
+ req_info->req.param1 = ctx->auth_key_len;
+ req_info->req.param2 = ctx->mac_type << 8;
+
+ /* Add authentication key */
+ req_info->in[*argcnt].vptr = ctx->key;
+ req_info->in[*argcnt].size = round_up(ctx->auth_key_len, 8);
+ req_info->req.dlen += round_up(ctx->auth_key_len, 8);
+ ++(*argcnt);
+
+ return 0;
+}
+
+static inline u32 create_aead_input_list(struct aead_request *req, u32 enc)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 inputlen = req->cryptlen + req->assoclen;
+ u32 status, argcnt = 0;
+
+ status = create_aead_ctx_hdr(req, enc, &argcnt);
+ if (status)
+ return status;
+ update_input_data(req_info, req->src, inputlen, &argcnt);
+ req_info->incnt = argcnt;
+
+ return 0;
+}
+
+static inline u32 create_aead_output_list(struct aead_request *req, u32 enc,
+ u32 mac_len)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 argcnt = 0, outputlen = 0;
+
+ if (enc)
+ outputlen = req->cryptlen + req->assoclen + mac_len;
+ else
+ outputlen = req->cryptlen + req->assoclen - mac_len;
+
+ update_output_data(req_info, req->dst, 0, outputlen, &argcnt);
+ req_info->outcnt = argcnt;
+
+ return 0;
+}
+
+static inline u32 create_aead_null_input_list(struct aead_request *req,
+ u32 enc, u32 mac_len)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ u32 inputlen, argcnt = 0;
+
+ if (enc)
+ inputlen = req->cryptlen + req->assoclen;
+ else
+ inputlen = req->cryptlen + req->assoclen - mac_len;
+
+ create_hmac_ctx_hdr(req, &argcnt, enc);
+ update_input_data(req_info, req->src, inputlen, &argcnt);
+ req_info->incnt = argcnt;
+
+ return 0;
+}
+
+static inline u32 create_aead_null_output_list(struct aead_request *req,
+ u32 enc, u32 mac_len)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ struct scatterlist *dst;
+ u8 *ptr = NULL;
+ int argcnt = 0, status, offset;
+ u32 inputlen;
+
+ if (enc)
+ inputlen = req->cryptlen + req->assoclen;
+ else
+ inputlen = req->cryptlen + req->assoclen - mac_len;
+
+ /*
+ * If source and destination are different
+ * then copy payload to destination
+ */
+ if (req->src != req->dst) {
+
+ ptr = kmalloc(inputlen, (req_info->areq->flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC);
+ if (!ptr) {
+ status = -ENOMEM;
+ goto error;
+ }
+
+ status = sg_copy_to_buffer(req->src, sg_nents(req->src), ptr,
+ inputlen);
+ if (status != inputlen) {
+ status = -EINVAL;
+ goto error;
+ }
+ status = sg_copy_from_buffer(req->dst, sg_nents(req->dst), ptr,
+ inputlen);
+ if (status != inputlen) {
+ status = -EINVAL;
+ goto error;
+ }
+ kfree(ptr);
+ }
+
+ if (enc) {
+ /*
+ * In an encryption scenario hmac needs
+ * to be appended after payload
+ */
+ dst = req->dst;
+ offset = inputlen;
+ while (offset >= dst->length) {
+ offset -= dst->length;
+ dst = sg_next(dst);
+ if (!dst) {
+ status = -ENOENT;
+ goto error;
+ }
+ }
+
+ update_output_data(req_info, dst, offset, mac_len, &argcnt);
+ } else {
+ /*
+ * In a decryption scenario calculated hmac for received
+ * payload needs to be compare with hmac received
+ */
+ status = sg_copy_buffer(req->src, sg_nents(req->src),
+ rctx->fctx.hmac.s.hmac_recv, mac_len,
+ inputlen, true);
+ if (status != mac_len) {
+ status = -EINVAL;
+ goto error;
+ }
+
+ req_info->out[argcnt].vptr = rctx->fctx.hmac.s.hmac_calc;
+ req_info->out[argcnt].size = mac_len;
+ argcnt++;
+ }
+
+ req_info->outcnt = argcnt;
+ return 0;
+error:
+ kfree(ptr);
+ return status;
+}
+
+static u32 cpt_aead_enc_dec(struct aead_request *req, u8 reg_type, u8 enc)
+{
+ struct otx_cpt_req_ctx *rctx = aead_request_ctx(req);
+ struct otx_cpt_req_info *req_info = &rctx->cpt_req;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct pci_dev *pdev;
+ u32 status, cpu_num;
+
+ /* Clear control words */
+ rctx->ctrl_word.flags = 0;
+ rctx->fctx.enc.enc_ctrl.flags = 0;
+
+ req_info->callback = otx_cpt_aead_callback;
+ req_info->areq = &req->base;
+ req_info->req_type = reg_type;
+ req_info->is_enc = enc;
+ req_info->is_trunc_hmac = false;
+
+ switch (reg_type) {
+ case OTX_CPT_AEAD_ENC_DEC_REQ:
+ status = create_aead_input_list(req, enc);
+ if (status)
+ return status;
+ status = create_aead_output_list(req, enc,
+ crypto_aead_authsize(tfm));
+ if (status)
+ return status;
+ break;
+
+ case OTX_CPT_AEAD_ENC_DEC_NULL_REQ:
+ status = create_aead_null_input_list(req, enc,
+ crypto_aead_authsize(tfm));
+ if (status)
+ return status;
+ status = create_aead_null_output_list(req, enc,
+ crypto_aead_authsize(tfm));
+ if (status)
+ return status;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Validate that request doesn't exceed maximum CPT supported size */
+ if (req_info->req.param1 > OTX_CPT_MAX_REQ_SIZE ||
+ req_info->req.param2 > OTX_CPT_MAX_REQ_SIZE)
+ return -E2BIG;
+
+ status = get_se_device(&pdev, &cpu_num);
+ if (status)
+ return status;
+
+ req_info->ctrl.s.grp = 0;
+
+ status = otx_cpt_do_request(pdev, req_info, cpu_num);
+ /*
+ * We perform an asynchronous send and once
+ * the request is completed the driver would
+ * intimate through registered call back functions
+ */
+ return status;
+}
+
+static int otx_cpt_aead_encrypt(struct aead_request *req)
+{
+ return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_REQ, true);
+}
+
+static int otx_cpt_aead_decrypt(struct aead_request *req)
+{
+ return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_REQ, false);
+}
+
+static int otx_cpt_aead_null_encrypt(struct aead_request *req)
+{
+ return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_NULL_REQ, true);
+}
+
+static int otx_cpt_aead_null_decrypt(struct aead_request *req)
+{
+ return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_NULL_REQ, false);
+}
+
+static struct skcipher_alg otx_cpt_skciphers[] = { {
+ .base.cra_name = "xts(aes)",
+ .base.cra_driver_name = "cpt_xts_aes",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = 2 * AES_MIN_KEY_SIZE,
+ .max_keysize = 2 * AES_MAX_KEY_SIZE,
+ .setkey = otx_cpt_skcipher_xts_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+}, {
+ .base.cra_name = "cbc(aes)",
+ .base.cra_driver_name = "cpt_cbc_aes",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = otx_cpt_skcipher_cbc_aes_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+}, {
+ .base.cra_name = "ecb(aes)",
+ .base.cra_driver_name = "cpt_ecb_aes",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .ivsize = 0,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = otx_cpt_skcipher_ecb_aes_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+}, {
+ .base.cra_name = "cfb(aes)",
+ .base.cra_driver_name = "cpt_cfb_aes",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = otx_cpt_skcipher_cfb_aes_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+}, {
+ .base.cra_name = "cbc(des3_ede)",
+ .base.cra_driver_name = "cpt_cbc_des3_ede",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_des3_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ .setkey = otx_cpt_skcipher_cbc_des3_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+}, {
+ .base.cra_name = "ecb(des3_ede)",
+ .base.cra_driver_name = "cpt_ecb_des3_ede",
+ .base.cra_flags = CRYPTO_ALG_ASYNC,
+ .base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct otx_cpt_des3_ctx),
+ .base.cra_alignmask = 7,
+ .base.cra_priority = 4001,
+ .base.cra_module = THIS_MODULE,
+
+ .init = otx_cpt_enc_dec_init,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = 0,
+ .setkey = otx_cpt_skcipher_ecb_des3_setkey,
+ .encrypt = otx_cpt_skcipher_encrypt,
+ .decrypt = otx_cpt_skcipher_decrypt,
+} };
+
+static struct aead_alg otx_cpt_aeads[] = { {
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(aes))",
+ .cra_driver_name = "cpt_hmac_sha1_cbc_aes",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_cbc_aes_sha1_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_cbc_aes_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_encrypt,
+ .decrypt = otx_cpt_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(aes))",
+ .cra_driver_name = "cpt_hmac_sha256_cbc_aes",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_cbc_aes_sha256_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_cbc_aes_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_encrypt,
+ .decrypt = otx_cpt_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha384),cbc(aes))",
+ .cra_driver_name = "cpt_hmac_sha384_cbc_aes",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_cbc_aes_sha384_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_cbc_aes_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_encrypt,
+ .decrypt = otx_cpt_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA384_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha512),cbc(aes))",
+ .cra_driver_name = "cpt_hmac_sha512_cbc_aes",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_cbc_aes_sha512_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_cbc_aes_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_encrypt,
+ .decrypt = otx_cpt_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA512_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha1),ecb(cipher_null))",
+ .cra_driver_name = "cpt_hmac_sha1_ecb_null",
+ .cra_blocksize = 1,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_ecb_null_sha1_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_ecb_null_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_null_encrypt,
+ .decrypt = otx_cpt_aead_null_decrypt,
+ .ivsize = 0,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha256),ecb(cipher_null))",
+ .cra_driver_name = "cpt_hmac_sha256_ecb_null",
+ .cra_blocksize = 1,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_ecb_null_sha256_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_ecb_null_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_null_encrypt,
+ .decrypt = otx_cpt_aead_null_decrypt,
+ .ivsize = 0,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha384),ecb(cipher_null))",
+ .cra_driver_name = "cpt_hmac_sha384_ecb_null",
+ .cra_blocksize = 1,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_ecb_null_sha384_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_ecb_null_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_null_encrypt,
+ .decrypt = otx_cpt_aead_null_decrypt,
+ .ivsize = 0,
+ .maxauthsize = SHA384_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "authenc(hmac(sha512),ecb(cipher_null))",
+ .cra_driver_name = "cpt_hmac_sha512_ecb_null",
+ .cra_blocksize = 1,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_ecb_null_sha512_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_ecb_null_sha_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_null_encrypt,
+ .decrypt = otx_cpt_aead_null_decrypt,
+ .ivsize = 0,
+ .maxauthsize = SHA512_DIGEST_SIZE,
+}, {
+ .base = {
+ .cra_name = "rfc4106(gcm(aes))",
+ .cra_driver_name = "cpt_rfc4106_gcm_aes",
+ .cra_blocksize = 1,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_ctxsize = sizeof(struct otx_cpt_aead_ctx),
+ .cra_priority = 4001,
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = otx_cpt_aead_gcm_aes_init,
+ .exit = otx_cpt_aead_exit,
+ .setkey = otx_cpt_aead_gcm_aes_setkey,
+ .setauthsize = otx_cpt_aead_set_authsize,
+ .encrypt = otx_cpt_aead_encrypt,
+ .decrypt = otx_cpt_aead_decrypt,
+ .ivsize = AES_GCM_IV_SIZE,
+ .maxauthsize = AES_GCM_ICV_SIZE,
+} };
+
+static inline int is_any_alg_used(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(otx_cpt_skciphers); i++)
+ if (refcount_read(&otx_cpt_skciphers[i].base.cra_refcnt) != 1)
+ return true;
+ for (i = 0; i < ARRAY_SIZE(otx_cpt_aeads); i++)
+ if (refcount_read(&otx_cpt_aeads[i].base.cra_refcnt) != 1)
+ return true;
+ return false;
+}
+
+static inline int cpt_register_algs(void)
+{
+ int i, err = 0;
+
+ if (!IS_ENABLED(CONFIG_DM_CRYPT)) {
+ for (i = 0; i < ARRAY_SIZE(otx_cpt_skciphers); i++)
+ otx_cpt_skciphers[i].base.cra_flags &= ~CRYPTO_ALG_DEAD;
+
+ err = crypto_register_skciphers(otx_cpt_skciphers,
+ ARRAY_SIZE(otx_cpt_skciphers));
+ if (err)
+ return err;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(otx_cpt_aeads); i++)
+ otx_cpt_aeads[i].base.cra_flags &= ~CRYPTO_ALG_DEAD;
+
+ err = crypto_register_aeads(otx_cpt_aeads, ARRAY_SIZE(otx_cpt_aeads));
+ if (err) {
+ crypto_unregister_skciphers(otx_cpt_skciphers,
+ ARRAY_SIZE(otx_cpt_skciphers));
+ return err;
+ }
+
+ return 0;
+}
+
+static inline void cpt_unregister_algs(void)
+{
+ crypto_unregister_skciphers(otx_cpt_skciphers,
+ ARRAY_SIZE(otx_cpt_skciphers));
+ crypto_unregister_aeads(otx_cpt_aeads, ARRAY_SIZE(otx_cpt_aeads));
+}
+
+static int compare_func(const void *lptr, const void *rptr)
+{
+ struct cpt_device_desc *ldesc = (struct cpt_device_desc *) lptr;
+ struct cpt_device_desc *rdesc = (struct cpt_device_desc *) rptr;
+
+ if (ldesc->dev->devfn < rdesc->dev->devfn)
+ return -1;
+ if (ldesc->dev->devfn > rdesc->dev->devfn)
+ return 1;
+ return 0;
+}
+
+static void swap_func(void *lptr, void *rptr, int size)
+{
+ struct cpt_device_desc *ldesc = (struct cpt_device_desc *) lptr;
+ struct cpt_device_desc *rdesc = (struct cpt_device_desc *) rptr;
+ struct cpt_device_desc desc;
+
+ desc = *ldesc;
+ *ldesc = *rdesc;
+ *rdesc = desc;
+}
+
+int otx_cpt_crypto_init(struct pci_dev *pdev, struct module *mod,
+ enum otx_cptpf_type pf_type,
+ enum otx_cptvf_type engine_type,
+ int num_queues, int num_devices)
+{
+ int ret = 0;
+ int count;
+
+ mutex_lock(&mutex);
+ switch (engine_type) {
+ case OTX_CPT_SE_TYPES:
+ count = atomic_read(&se_devices.count);
+ if (count >= CPT_MAX_VF_NUM) {
+ dev_err(&pdev->dev, "No space to add a new device");
+ ret = -ENOSPC;
+ goto err;
+ }
+ se_devices.desc[count].pf_type = pf_type;
+ se_devices.desc[count].num_queues = num_queues;
+ se_devices.desc[count++].dev = pdev;
+ atomic_inc(&se_devices.count);
+
+ if (atomic_read(&se_devices.count) == num_devices &&
+ is_crypto_registered == false) {
+ if (cpt_register_algs()) {
+ dev_err(&pdev->dev,
+ "Error in registering crypto algorithms\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ try_module_get(mod);
+ is_crypto_registered = true;
+ }
+ sort(se_devices.desc, count, sizeof(struct cpt_device_desc),
+ compare_func, swap_func);
+ break;
+
+ case OTX_CPT_AE_TYPES:
+ count = atomic_read(&ae_devices.count);
+ if (count >= CPT_MAX_VF_NUM) {
+ dev_err(&pdev->dev, "No space to a add new device");
+ ret = -ENOSPC;
+ goto err;
+ }
+ ae_devices.desc[count].pf_type = pf_type;
+ ae_devices.desc[count].num_queues = num_queues;
+ ae_devices.desc[count++].dev = pdev;
+ atomic_inc(&ae_devices.count);
+ sort(ae_devices.desc, count, sizeof(struct cpt_device_desc),
+ compare_func, swap_func);
+ break;
+
+ default:
+ dev_err(&pdev->dev, "Unknown VF type %d\n", engine_type);
+ ret = BAD_OTX_CPTVF_TYPE;
+ }
+err:
+ mutex_unlock(&mutex);
+ return ret;
+}
+
+void otx_cpt_crypto_exit(struct pci_dev *pdev, struct module *mod,
+ enum otx_cptvf_type engine_type)
+{
+ struct cpt_device_table *dev_tbl;
+ bool dev_found = false;
+ int i, j, count;
+
+ mutex_lock(&mutex);
+
+ dev_tbl = (engine_type == OTX_CPT_AE_TYPES) ? &ae_devices : &se_devices;
+ count = atomic_read(&dev_tbl->count);
+ for (i = 0; i < count; i++)
+ if (pdev == dev_tbl->desc[i].dev) {
+ for (j = i; j < count-1; j++)
+ dev_tbl->desc[j] = dev_tbl->desc[j+1];
+ dev_found = true;
+ break;
+ }
+
+ if (!dev_found) {
+ dev_err(&pdev->dev, "%s device not found", __func__);
+ goto exit;
+ }
+
+ if (engine_type != OTX_CPT_AE_TYPES) {
+ if (atomic_dec_and_test(&se_devices.count) &&
+ !is_any_alg_used()) {
+ cpt_unregister_algs();
+ module_put(mod);
+ is_crypto_registered = false;
+ }
+ } else
+ atomic_dec(&ae_devices.count);
+exit:
+ mutex_unlock(&mutex);
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0
+ * Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __OTX_CPT_ALGS_H
+#define __OTX_CPT_ALGS_H
+
+#include <crypto/hash.h>
+#include "otx_cpt_common.h"
+
+#define OTX_CPT_MAX_ENC_KEY_SIZE 32
+#define OTX_CPT_MAX_HASH_KEY_SIZE 64
+#define OTX_CPT_MAX_KEY_SIZE (OTX_CPT_MAX_ENC_KEY_SIZE + \
+ OTX_CPT_MAX_HASH_KEY_SIZE)
+enum otx_cpt_request_type {
+ OTX_CPT_ENC_DEC_REQ = 0x1,
+ OTX_CPT_AEAD_ENC_DEC_REQ = 0x2,
+ OTX_CPT_AEAD_ENC_DEC_NULL_REQ = 0x3,
+ OTX_CPT_PASSTHROUGH_REQ = 0x4
+};
+
+enum otx_cpt_major_opcodes {
+ OTX_CPT_MAJOR_OP_MISC = 0x01,
+ OTX_CPT_MAJOR_OP_FC = 0x33,
+ OTX_CPT_MAJOR_OP_HMAC = 0x35,
+};
+
+enum otx_cpt_req_type {
+ OTX_CPT_AE_CORE_REQ,
+ OTX_CPT_SE_CORE_REQ
+};
+
+enum otx_cpt_cipher_type {
+ OTX_CPT_CIPHER_NULL = 0x0,
+ OTX_CPT_DES3_CBC = 0x1,
+ OTX_CPT_DES3_ECB = 0x2,
+ OTX_CPT_AES_CBC = 0x3,
+ OTX_CPT_AES_ECB = 0x4,
+ OTX_CPT_AES_CFB = 0x5,
+ OTX_CPT_AES_CTR = 0x6,
+ OTX_CPT_AES_GCM = 0x7,
+ OTX_CPT_AES_XTS = 0x8
+};
+
+enum otx_cpt_mac_type {
+ OTX_CPT_MAC_NULL = 0x0,
+ OTX_CPT_MD5 = 0x1,
+ OTX_CPT_SHA1 = 0x2,
+ OTX_CPT_SHA224 = 0x3,
+ OTX_CPT_SHA256 = 0x4,
+ OTX_CPT_SHA384 = 0x5,
+ OTX_CPT_SHA512 = 0x6,
+ OTX_CPT_GMAC = 0x7
+};
+
+enum otx_cpt_aes_key_len {
+ OTX_CPT_AES_128_BIT = 0x1,
+ OTX_CPT_AES_192_BIT = 0x2,
+ OTX_CPT_AES_256_BIT = 0x3
+};
+
+union otx_cpt_encr_ctrl {
+ u64 flags;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u64 enc_cipher:4;
+ u64 reserved1:1;
+ u64 aes_key:2;
+ u64 iv_source:1;
+ u64 mac_type:4;
+ u64 reserved2:3;
+ u64 auth_input_type:1;
+ u64 mac_len:8;
+ u64 reserved3:8;
+ u64 encr_offset:16;
+ u64 iv_offset:8;
+ u64 auth_offset:8;
+#else
+ u64 auth_offset:8;
+ u64 iv_offset:8;
+ u64 encr_offset:16;
+ u64 reserved3:8;
+ u64 mac_len:8;
+ u64 auth_input_type:1;
+ u64 reserved2:3;
+ u64 mac_type:4;
+ u64 iv_source:1;
+ u64 aes_key:2;
+ u64 reserved1:1;
+ u64 enc_cipher:4;
+#endif
+ } e;
+};
+
+struct otx_cpt_cipher {
+ const char *name;
+ u8 value;
+};
+
+struct otx_cpt_enc_context {
+ union otx_cpt_encr_ctrl enc_ctrl;
+ u8 encr_key[32];
+ u8 encr_iv[16];
+};
+
+union otx_cpt_fchmac_ctx {
+ struct {
+ u8 ipad[64];
+ u8 opad[64];
+ } e;
+ struct {
+ u8 hmac_calc[64]; /* HMAC calculated */
+ u8 hmac_recv[64]; /* HMAC received */
+ } s;
+};
+
+struct otx_cpt_fc_ctx {
+ struct otx_cpt_enc_context enc;
+ union otx_cpt_fchmac_ctx hmac;
+};
+
+struct otx_cpt_enc_ctx {
+ u32 key_len;
+ u8 enc_key[OTX_CPT_MAX_KEY_SIZE];
+ u8 cipher_type;
+ u8 key_type;
+};
+
+struct otx_cpt_des3_ctx {
+ u32 key_len;
+ u8 des3_key[OTX_CPT_MAX_KEY_SIZE];
+};
+
+union otx_cpt_offset_ctrl_word {
+ u64 flags;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u64 reserved:32;
+ u64 enc_data_offset:16;
+ u64 iv_offset:8;
+ u64 auth_offset:8;
+#else
+ u64 auth_offset:8;
+ u64 iv_offset:8;
+ u64 enc_data_offset:16;
+ u64 reserved:32;
+#endif
+ } e;
+};
+
+struct otx_cpt_req_ctx {
+ struct otx_cpt_req_info cpt_req;
+ union otx_cpt_offset_ctrl_word ctrl_word;
+ struct otx_cpt_fc_ctx fctx;
+};
+
+struct otx_cpt_sdesc {
+ struct shash_desc shash;
+};
+
+struct otx_cpt_aead_ctx {
+ u8 key[OTX_CPT_MAX_KEY_SIZE];
+ struct crypto_shash *hashalg;
+ struct otx_cpt_sdesc *sdesc;
+ u8 *ipad;
+ u8 *opad;
+ u32 enc_key_len;
+ u32 auth_key_len;
+ u8 cipher_type;
+ u8 mac_type;
+ u8 key_type;
+ u8 is_trunc_hmac;
+};
+int otx_cpt_crypto_init(struct pci_dev *pdev, struct module *mod,
+ enum otx_cptpf_type pf_type,
+ enum otx_cptvf_type engine_type,
+ int num_queues, int num_devices);
+void otx_cpt_crypto_exit(struct pci_dev *pdev, struct module *mod,
+ enum otx_cptvf_type engine_type);
+void otx_cpt_callback(int status, void *arg, void *req);
+
+#endif /* __OTX_CPT_ALGS_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include "otx_cptvf.h"
+#include "otx_cptvf_algs.h"
+#include "otx_cptvf_reqmgr.h"
+
+#define DRV_NAME "octeontx-cptvf"
+#define DRV_VERSION "1.0"
+
+static void vq_work_handler(unsigned long data)
+{
+ struct otx_cptvf_wqe_info *cwqe_info =
+ (struct otx_cptvf_wqe_info *) data;
+
+ otx_cpt_post_process(&cwqe_info->vq_wqe[0]);
+}
+
+static int init_worker_threads(struct otx_cptvf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ struct otx_cptvf_wqe_info *cwqe_info;
+ int i;
+
+ cwqe_info = kzalloc(sizeof(*cwqe_info), GFP_KERNEL);
+ if (!cwqe_info)
+ return -ENOMEM;
+
+ if (cptvf->num_queues) {
+ dev_dbg(&pdev->dev, "Creating VQ worker threads (%d)\n",
+ cptvf->num_queues);
+ }
+
+ for (i = 0; i < cptvf->num_queues; i++) {
+ tasklet_init(&cwqe_info->vq_wqe[i].twork, vq_work_handler,
+ (u64)cwqe_info);
+ cwqe_info->vq_wqe[i].cptvf = cptvf;
+ }
+ cptvf->wqe_info = cwqe_info;
+
+ return 0;
+}
+
+static void cleanup_worker_threads(struct otx_cptvf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ struct otx_cptvf_wqe_info *cwqe_info;
+ int i;
+
+ cwqe_info = (struct otx_cptvf_wqe_info *)cptvf->wqe_info;
+ if (!cwqe_info)
+ return;
+
+ if (cptvf->num_queues) {
+ dev_dbg(&pdev->dev, "Cleaning VQ worker threads (%u)\n",
+ cptvf->num_queues);
+ }
+
+ for (i = 0; i < cptvf->num_queues; i++)
+ tasklet_kill(&cwqe_info->vq_wqe[i].twork);
+
+ kzfree(cwqe_info);
+ cptvf->wqe_info = NULL;
+}
+
+static void free_pending_queues(struct otx_cpt_pending_qinfo *pqinfo)
+{
+ struct otx_cpt_pending_queue *queue;
+ int i;
+
+ for_each_pending_queue(pqinfo, queue, i) {
+ if (!queue->head)
+ continue;
+
+ /* free single queue */
+ kzfree((queue->head));
+ queue->front = 0;
+ queue->rear = 0;
+ queue->qlen = 0;
+ }
+ pqinfo->num_queues = 0;
+}
+
+static int alloc_pending_queues(struct otx_cpt_pending_qinfo *pqinfo, u32 qlen,
+ u32 num_queues)
+{
+ struct otx_cpt_pending_queue *queue = NULL;
+ size_t size;
+ int ret;
+ u32 i;
+
+ pqinfo->num_queues = num_queues;
+ size = (qlen * sizeof(struct otx_cpt_pending_entry));
+
+ for_each_pending_queue(pqinfo, queue, i) {
+ queue->head = kzalloc((size), GFP_KERNEL);
+ if (!queue->head) {
+ ret = -ENOMEM;
+ goto pending_qfail;
+ }
+
+ queue->pending_count = 0;
+ queue->front = 0;
+ queue->rear = 0;
+ queue->qlen = qlen;
+
+ /* init queue spin lock */
+ spin_lock_init(&queue->lock);
+ }
+ return 0;
+
+pending_qfail:
+ free_pending_queues(pqinfo);
+
+ return ret;
+}
+
+static int init_pending_queues(struct otx_cptvf *cptvf, u32 qlen,
+ u32 num_queues)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ int ret;
+
+ if (!num_queues)
+ return 0;
+
+ ret = alloc_pending_queues(&cptvf->pqinfo, qlen, num_queues);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to setup pending queues (%u)\n",
+ num_queues);
+ return ret;
+ }
+ return 0;
+}
+
+static void cleanup_pending_queues(struct otx_cptvf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (!cptvf->num_queues)
+ return;
+
+ dev_dbg(&pdev->dev, "Cleaning VQ pending queue (%u)\n",
+ cptvf->num_queues);
+ free_pending_queues(&cptvf->pqinfo);
+}
+
+static void free_command_queues(struct otx_cptvf *cptvf,
+ struct otx_cpt_cmd_qinfo *cqinfo)
+{
+ struct otx_cpt_cmd_queue *queue = NULL;
+ struct otx_cpt_cmd_chunk *chunk = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+ int i;
+
+ /* clean up for each queue */
+ for (i = 0; i < cptvf->num_queues; i++) {
+ queue = &cqinfo->queue[i];
+
+ while (!list_empty(&cqinfo->queue[i].chead)) {
+ chunk = list_first_entry(&cqinfo->queue[i].chead,
+ struct otx_cpt_cmd_chunk, nextchunk);
+
+ dma_free_coherent(&pdev->dev, chunk->size,
+ chunk->head,
+ chunk->dma_addr);
+ chunk->head = NULL;
+ chunk->dma_addr = 0;
+ list_del(&chunk->nextchunk);
+ kzfree(chunk);
+ }
+ queue->num_chunks = 0;
+ queue->idx = 0;
+
+ }
+}
+
+static int alloc_command_queues(struct otx_cptvf *cptvf,
+ struct otx_cpt_cmd_qinfo *cqinfo,
+ u32 qlen)
+{
+ struct otx_cpt_cmd_chunk *curr, *first, *last;
+ struct otx_cpt_cmd_queue *queue = NULL;
+ struct pci_dev *pdev = cptvf->pdev;
+ size_t q_size, c_size, rem_q_size;
+ u32 qcsize_bytes;
+ int i;
+
+
+ /* Qsize in dwords, needed for SADDR config, 1-next chunk pointer */
+ cptvf->qsize = min(qlen, cqinfo->qchunksize) *
+ OTX_CPT_NEXT_CHUNK_PTR_SIZE + 1;
+ /* Qsize in bytes to create space for alignment */
+ q_size = qlen * OTX_CPT_INST_SIZE;
+
+ qcsize_bytes = cqinfo->qchunksize * OTX_CPT_INST_SIZE;
+
+ /* per queue initialization */
+ for (i = 0; i < cptvf->num_queues; i++) {
+ c_size = 0;
+ rem_q_size = q_size;
+ first = NULL;
+ last = NULL;
+
+ queue = &cqinfo->queue[i];
+ INIT_LIST_HEAD(&queue->chead);
+ do {
+ curr = kzalloc(sizeof(*curr), GFP_KERNEL);
+ if (!curr)
+ goto cmd_qfail;
+
+ c_size = (rem_q_size > qcsize_bytes) ? qcsize_bytes :
+ rem_q_size;
+ curr->head = dma_alloc_coherent(&pdev->dev,
+ c_size + OTX_CPT_NEXT_CHUNK_PTR_SIZE,
+ &curr->dma_addr, GFP_KERNEL);
+ if (!curr->head) {
+ dev_err(&pdev->dev,
+ "Command Q (%d) chunk (%d) allocation failed\n",
+ i, queue->num_chunks);
+ goto free_curr;
+ }
+ curr->size = c_size;
+
+ if (queue->num_chunks == 0) {
+ first = curr;
+ queue->base = first;
+ }
+ list_add_tail(&curr->nextchunk,
+ &cqinfo->queue[i].chead);
+
+ queue->num_chunks++;
+ rem_q_size -= c_size;
+ if (last)
+ *((u64 *)(&last->head[last->size])) =
+ (u64)curr->dma_addr;
+
+ last = curr;
+ } while (rem_q_size);
+
+ /*
+ * Make the queue circular, tie back last chunk entry to head
+ */
+ curr = first;
+ *((u64 *)(&last->head[last->size])) = (u64)curr->dma_addr;
+ queue->qhead = curr;
+ }
+ return 0;
+free_curr:
+ kfree(curr);
+cmd_qfail:
+ free_command_queues(cptvf, cqinfo);
+ return -ENOMEM;
+}
+
+static int init_command_queues(struct otx_cptvf *cptvf, u32 qlen)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ int ret;
+
+ /* setup command queues */
+ ret = alloc_command_queues(cptvf, &cptvf->cqinfo, qlen);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to allocate command queues (%u)\n",
+ cptvf->num_queues);
+ return ret;
+ }
+ return ret;
+}
+
+static void cleanup_command_queues(struct otx_cptvf *cptvf)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+
+ if (!cptvf->num_queues)
+ return;
+
+ dev_dbg(&pdev->dev, "Cleaning VQ command queue (%u)\n",
+ cptvf->num_queues);
+ free_command_queues(cptvf, &cptvf->cqinfo);
+}
+
+static void cptvf_sw_cleanup(struct otx_cptvf *cptvf)
+{
+ cleanup_worker_threads(cptvf);
+ cleanup_pending_queues(cptvf);
+ cleanup_command_queues(cptvf);
+}
+
+static int cptvf_sw_init(struct otx_cptvf *cptvf, u32 qlen, u32 num_queues)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ u32 max_dev_queues = 0;
+ int ret;
+
+ max_dev_queues = OTX_CPT_NUM_QS_PER_VF;
+ /* possible cpus */
+ num_queues = min_t(u32, num_queues, max_dev_queues);
+ cptvf->num_queues = num_queues;
+
+ ret = init_command_queues(cptvf, qlen);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to setup command queues (%u)\n",
+ num_queues);
+ return ret;
+ }
+
+ ret = init_pending_queues(cptvf, qlen, num_queues);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to setup pending queues (%u)\n",
+ num_queues);
+ goto setup_pqfail;
+ }
+
+ /* Create worker threads for BH processing */
+ ret = init_worker_threads(cptvf);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to setup worker threads\n");
+ goto init_work_fail;
+ }
+ return 0;
+
+init_work_fail:
+ cleanup_worker_threads(cptvf);
+ cleanup_pending_queues(cptvf);
+
+setup_pqfail:
+ cleanup_command_queues(cptvf);
+
+ return ret;
+}
+
+static void cptvf_free_irq_affinity(struct otx_cptvf *cptvf, int vec)
+{
+ irq_set_affinity_hint(pci_irq_vector(cptvf->pdev, vec), NULL);
+ free_cpumask_var(cptvf->affinity_mask[vec]);
+}
+
+static void cptvf_write_vq_ctl(struct otx_cptvf *cptvf, bool val)
+{
+ union otx_cptx_vqx_ctl vqx_ctl;
+
+ vqx_ctl.u = readq(cptvf->reg_base + OTX_CPT_VQX_CTL(0));
+ vqx_ctl.s.ena = val;
+ writeq(vqx_ctl.u, cptvf->reg_base + OTX_CPT_VQX_CTL(0));
+}
+
+void otx_cptvf_write_vq_doorbell(struct otx_cptvf *cptvf, u32 val)
+{
+ union otx_cptx_vqx_doorbell vqx_dbell;
+
+ vqx_dbell.u = readq(cptvf->reg_base + OTX_CPT_VQX_DOORBELL(0));
+ vqx_dbell.s.dbell_cnt = val * 8; /* Num of Instructions * 8 words */
+ writeq(vqx_dbell.u, cptvf->reg_base + OTX_CPT_VQX_DOORBELL(0));
+}
+
+static void cptvf_write_vq_inprog(struct otx_cptvf *cptvf, u8 val)
+{
+ union otx_cptx_vqx_inprog vqx_inprg;
+
+ vqx_inprg.u = readq(cptvf->reg_base + OTX_CPT_VQX_INPROG(0));
+ vqx_inprg.s.inflight = val;
+ writeq(vqx_inprg.u, cptvf->reg_base + OTX_CPT_VQX_INPROG(0));
+}
+
+static void cptvf_write_vq_done_numwait(struct otx_cptvf *cptvf, u32 val)
+{
+ union otx_cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+ vqx_dwait.s.num_wait = val;
+ writeq(vqx_dwait.u, cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+}
+
+static u32 cptvf_read_vq_done_numwait(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+ return vqx_dwait.s.num_wait;
+}
+
+static void cptvf_write_vq_done_timewait(struct otx_cptvf *cptvf, u16 time)
+{
+ union otx_cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+ vqx_dwait.s.time_wait = time;
+ writeq(vqx_dwait.u, cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+}
+
+
+static u16 cptvf_read_vq_done_timewait(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_done_wait vqx_dwait;
+
+ vqx_dwait.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_WAIT(0));
+ return vqx_dwait.s.time_wait;
+}
+
+static void cptvf_enable_swerr_interrupts(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_ena_w1s vqx_misc_ena;
+
+ vqx_misc_ena.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_ENA_W1S(0));
+ /* Enable SWERR interrupts for the requested VF */
+ vqx_misc_ena.s.swerr = 1;
+ writeq(vqx_misc_ena.u, cptvf->reg_base + OTX_CPT_VQX_MISC_ENA_W1S(0));
+}
+
+static void cptvf_enable_mbox_interrupts(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_ena_w1s vqx_misc_ena;
+
+ vqx_misc_ena.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_ENA_W1S(0));
+ /* Enable MBOX interrupt for the requested VF */
+ vqx_misc_ena.s.mbox = 1;
+ writeq(vqx_misc_ena.u, cptvf->reg_base + OTX_CPT_VQX_MISC_ENA_W1S(0));
+}
+
+static void cptvf_enable_done_interrupts(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_done_ena_w1s vqx_done_ena;
+
+ vqx_done_ena.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_ENA_W1S(0));
+ /* Enable DONE interrupt for the requested VF */
+ vqx_done_ena.s.done = 1;
+ writeq(vqx_done_ena.u, cptvf->reg_base + OTX_CPT_VQX_DONE_ENA_W1S(0));
+}
+
+static void cptvf_clear_dovf_intr(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+ /* W1C for the VF */
+ vqx_misc_int.s.dovf = 1;
+ writeq(vqx_misc_int.u, cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static void cptvf_clear_irde_intr(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+ /* W1C for the VF */
+ vqx_misc_int.s.irde = 1;
+ writeq(vqx_misc_int.u, cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static void cptvf_clear_nwrp_intr(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+ /* W1C for the VF */
+ vqx_misc_int.s.nwrp = 1;
+ writeq(vqx_misc_int.u, cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static void cptvf_clear_mbox_intr(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+ /* W1C for the VF */
+ vqx_misc_int.s.mbox = 1;
+ writeq(vqx_misc_int.u, cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static void cptvf_clear_swerr_intr(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_misc_int vqx_misc_int;
+
+ vqx_misc_int.u = readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+ /* W1C for the VF */
+ vqx_misc_int.s.swerr = 1;
+ writeq(vqx_misc_int.u, cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static u64 cptvf_read_vf_misc_intr_status(struct otx_cptvf *cptvf)
+{
+ return readq(cptvf->reg_base + OTX_CPT_VQX_MISC_INT(0));
+}
+
+static irqreturn_t cptvf_misc_intr_handler(int __always_unused irq,
+ void *arg)
+{
+ struct otx_cptvf *cptvf = arg;
+ struct pci_dev *pdev = cptvf->pdev;
+ u64 intr;
+
+ intr = cptvf_read_vf_misc_intr_status(cptvf);
+ /* Check for MISC interrupt types */
+ if (likely(intr & OTX_CPT_VF_INTR_MBOX_MASK)) {
+ dev_dbg(&pdev->dev, "Mailbox interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ otx_cptvf_handle_mbox_intr(cptvf);
+ cptvf_clear_mbox_intr(cptvf);
+ } else if (unlikely(intr & OTX_CPT_VF_INTR_DOVF_MASK)) {
+ cptvf_clear_dovf_intr(cptvf);
+ /* Clear doorbell count */
+ otx_cptvf_write_vq_doorbell(cptvf, 0);
+ dev_err(&pdev->dev,
+ "Doorbell overflow error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & OTX_CPT_VF_INTR_IRDE_MASK)) {
+ cptvf_clear_irde_intr(cptvf);
+ dev_err(&pdev->dev,
+ "Instruction NCB read error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & OTX_CPT_VF_INTR_NWRP_MASK)) {
+ cptvf_clear_nwrp_intr(cptvf);
+ dev_err(&pdev->dev,
+ "NCB response write error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else if (unlikely(intr & OTX_CPT_VF_INTR_SERR_MASK)) {
+ cptvf_clear_swerr_intr(cptvf);
+ dev_err(&pdev->dev,
+ "Software error interrupt 0x%llx on CPT VF %d\n",
+ intr, cptvf->vfid);
+ } else {
+ dev_err(&pdev->dev, "Unhandled interrupt in OTX_CPT VF %d\n",
+ cptvf->vfid);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static inline struct otx_cptvf_wqe *get_cptvf_vq_wqe(struct otx_cptvf *cptvf,
+ int qno)
+{
+ struct otx_cptvf_wqe_info *nwqe_info;
+
+ if (unlikely(qno >= cptvf->num_queues))
+ return NULL;
+ nwqe_info = (struct otx_cptvf_wqe_info *)cptvf->wqe_info;
+
+ return &nwqe_info->vq_wqe[qno];
+}
+
+static inline u32 cptvf_read_vq_done_count(struct otx_cptvf *cptvf)
+{
+ union otx_cptx_vqx_done vqx_done;
+
+ vqx_done.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE(0));
+ return vqx_done.s.done;
+}
+
+static inline void cptvf_write_vq_done_ack(struct otx_cptvf *cptvf,
+ u32 ackcnt)
+{
+ union otx_cptx_vqx_done_ack vqx_dack_cnt;
+
+ vqx_dack_cnt.u = readq(cptvf->reg_base + OTX_CPT_VQX_DONE_ACK(0));
+ vqx_dack_cnt.s.done_ack = ackcnt;
+ writeq(vqx_dack_cnt.u, cptvf->reg_base + OTX_CPT_VQX_DONE_ACK(0));
+}
+
+static irqreturn_t cptvf_done_intr_handler(int __always_unused irq,
+ void *cptvf_dev)
+{
+ struct otx_cptvf *cptvf = (struct otx_cptvf *)cptvf_dev;
+ struct pci_dev *pdev = cptvf->pdev;
+ /* Read the number of completions */
+ u32 intr = cptvf_read_vq_done_count(cptvf);
+
+ if (intr) {
+ struct otx_cptvf_wqe *wqe;
+
+ /*
+ * Acknowledge the number of scheduled completions for
+ * processing
+ */
+ cptvf_write_vq_done_ack(cptvf, intr);
+ wqe = get_cptvf_vq_wqe(cptvf, 0);
+ if (unlikely(!wqe)) {
+ dev_err(&pdev->dev, "No work to schedule for VF (%d)",
+ cptvf->vfid);
+ return IRQ_NONE;
+ }
+ tasklet_hi_schedule(&wqe->twork);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void cptvf_set_irq_affinity(struct otx_cptvf *cptvf, int vec)
+{
+ struct pci_dev *pdev = cptvf->pdev;
+ int cpu;
+
+ if (!zalloc_cpumask_var(&cptvf->affinity_mask[vec],
+ GFP_KERNEL)) {
+ dev_err(&pdev->dev,
+ "Allocation failed for affinity_mask for VF %d",
+ cptvf->vfid);
+ return;
+ }
+
+ cpu = cptvf->vfid % num_online_cpus();
+ cpumask_set_cpu(cpumask_local_spread(cpu, cptvf->node),
+ cptvf->affinity_mask[vec]);
+ irq_set_affinity_hint(pci_irq_vector(pdev, vec),
+ cptvf->affinity_mask[vec]);
+}
+
+static void cptvf_write_vq_saddr(struct otx_cptvf *cptvf, u64 val)
+{
+ union otx_cptx_vqx_saddr vqx_saddr;
+
+ vqx_saddr.u = val;
+ writeq(vqx_saddr.u, cptvf->reg_base + OTX_CPT_VQX_SADDR(0));
+}
+
+static void cptvf_device_init(struct otx_cptvf *cptvf)
+{
+ u64 base_addr = 0;
+
+ /* Disable the VQ */
+ cptvf_write_vq_ctl(cptvf, 0);
+ /* Reset the doorbell */
+ otx_cptvf_write_vq_doorbell(cptvf, 0);
+ /* Clear inflight */
+ cptvf_write_vq_inprog(cptvf, 0);
+ /* Write VQ SADDR */
+ base_addr = (u64)(cptvf->cqinfo.queue[0].qhead->dma_addr);
+ cptvf_write_vq_saddr(cptvf, base_addr);
+ /* Configure timerhold / coalescence */
+ cptvf_write_vq_done_timewait(cptvf, OTX_CPT_TIMER_HOLD);
+ cptvf_write_vq_done_numwait(cptvf, OTX_CPT_COUNT_HOLD);
+ /* Enable the VQ */
+ cptvf_write_vq_ctl(cptvf, 1);
+ /* Flag the VF ready */
+ cptvf->flags |= OTX_CPT_FLAG_DEVICE_READY;
+}
+
+static ssize_t vf_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+ char *msg;
+
+ switch (cptvf->vftype) {
+ case OTX_CPT_AE_TYPES:
+ msg = "AE";
+ break;
+
+ case OTX_CPT_SE_TYPES:
+ msg = "SE";
+ break;
+
+ default:
+ msg = "Invalid";
+ }
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", msg);
+}
+
+static ssize_t vf_engine_group_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", cptvf->vfgrp);
+}
+
+static ssize_t vf_engine_group_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+ int val, ret;
+
+ ret = kstrtoint(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ if (val < 0)
+ return -EINVAL;
+
+ if (val >= OTX_CPT_MAX_ENGINE_GROUPS) {
+ dev_err(dev, "Engine group >= than max available groups %d",
+ OTX_CPT_MAX_ENGINE_GROUPS);
+ return -EINVAL;
+ }
+
+ ret = otx_cptvf_send_vf_to_grp_msg(cptvf, val);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t vf_coalesc_time_wait_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n",
+ cptvf_read_vq_done_timewait(cptvf));
+}
+
+static ssize_t vf_coalesc_num_wait_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n",
+ cptvf_read_vq_done_numwait(cptvf));
+}
+
+static ssize_t vf_coalesc_time_wait_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret != 0)
+ return ret;
+
+ if (val < OTX_CPT_COALESC_MIN_TIME_WAIT ||
+ val > OTX_CPT_COALESC_MAX_TIME_WAIT)
+ return -EINVAL;
+
+ cptvf_write_vq_done_timewait(cptvf, val);
+ return count;
+}
+
+static ssize_t vf_coalesc_num_wait_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct otx_cptvf *cptvf = dev_get_drvdata(dev);
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret != 0)
+ return ret;
+
+ if (val < OTX_CPT_COALESC_MIN_NUM_WAIT ||
+ val > OTX_CPT_COALESC_MAX_NUM_WAIT)
+ return -EINVAL;
+
+ cptvf_write_vq_done_numwait(cptvf, val);
+ return count;
+}
+
+static DEVICE_ATTR_RO(vf_type);
+static DEVICE_ATTR_RW(vf_engine_group);
+static DEVICE_ATTR_RW(vf_coalesc_time_wait);
+static DEVICE_ATTR_RW(vf_coalesc_num_wait);
+
+static struct attribute *otx_cptvf_attrs[] = {
+ &dev_attr_vf_type.attr,
+ &dev_attr_vf_engine_group.attr,
+ &dev_attr_vf_coalesc_time_wait.attr,
+ &dev_attr_vf_coalesc_num_wait.attr,
+ NULL
+};
+
+static const struct attribute_group otx_cptvf_sysfs_group = {
+ .attrs = otx_cptvf_attrs,
+};
+
+static int otx_cptvf_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct otx_cptvf *cptvf;
+ int err;
+
+ cptvf = devm_kzalloc(dev, sizeof(*cptvf), GFP_KERNEL);
+ if (!cptvf)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, cptvf);
+ cptvf->pdev = pdev;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ goto clear_drvdata;
+ }
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto disable_device;
+ }
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get usable DMA configuration\n");
+ goto release_regions;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get 48-bit DMA for consistent allocations\n");
+ goto release_regions;
+ }
+
+ /* MAP PF's configuration registers */
+ cptvf->reg_base = pci_iomap(pdev, OTX_CPT_VF_PCI_CFG_BAR, 0);
+ if (!cptvf->reg_base) {
+ dev_err(dev, "Cannot map config register space, aborting\n");
+ err = -ENOMEM;
+ goto release_regions;
+ }
+
+ cptvf->node = dev_to_node(&pdev->dev);
+ err = pci_alloc_irq_vectors(pdev, OTX_CPT_VF_MSIX_VECTORS,
+ OTX_CPT_VF_MSIX_VECTORS, PCI_IRQ_MSIX);
+ if (err < 0) {
+ dev_err(dev, "Request for #%d msix vectors failed\n",
+ OTX_CPT_VF_MSIX_VECTORS);
+ goto unmap_region;
+ }
+
+ err = request_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC),
+ cptvf_misc_intr_handler, 0, "CPT VF misc intr",
+ cptvf);
+ if (err) {
+ dev_err(dev, "Failed to request misc irq");
+ goto free_vectors;
+ }
+
+ /* Enable mailbox interrupt */
+ cptvf_enable_mbox_interrupts(cptvf);
+ cptvf_enable_swerr_interrupts(cptvf);
+
+ /* Check cpt pf status, gets chip ID / device Id from PF if ready */
+ err = otx_cptvf_check_pf_ready(cptvf);
+ if (err)
+ goto free_misc_irq;
+
+ /* CPT VF software resources initialization */
+ cptvf->cqinfo.qchunksize = OTX_CPT_CMD_QCHUNK_SIZE;
+ err = cptvf_sw_init(cptvf, OTX_CPT_CMD_QLEN, OTX_CPT_NUM_QS_PER_VF);
+ if (err) {
+ dev_err(dev, "cptvf_sw_init() failed");
+ goto free_misc_irq;
+ }
+ /* Convey VQ LEN to PF */
+ err = otx_cptvf_send_vq_size_msg(cptvf);
+ if (err)
+ goto sw_cleanup;
+
+ /* CPT VF device initialization */
+ cptvf_device_init(cptvf);
+ /* Send msg to PF to assign currnet Q to required group */
+ err = otx_cptvf_send_vf_to_grp_msg(cptvf, cptvf->vfgrp);
+ if (err)
+ goto sw_cleanup;
+
+ cptvf->priority = 1;
+ err = otx_cptvf_send_vf_priority_msg(cptvf);
+ if (err)
+ goto sw_cleanup;
+
+ err = request_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_DONE),
+ cptvf_done_intr_handler, 0, "CPT VF done intr",
+ cptvf);
+ if (err) {
+ dev_err(dev, "Failed to request done irq\n");
+ goto free_done_irq;
+ }
+
+ /* Enable done interrupt */
+ cptvf_enable_done_interrupts(cptvf);
+
+ /* Set irq affinity masks */
+ cptvf_set_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);
+ cptvf_set_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);
+
+ err = otx_cptvf_send_vf_up(cptvf);
+ if (err)
+ goto free_irq_affinity;
+
+ /* Initialize algorithms and set ops */
+ err = otx_cpt_crypto_init(pdev, THIS_MODULE,
+ cptvf->vftype == OTX_CPT_SE_TYPES ? OTX_CPT_SE : OTX_CPT_AE,
+ cptvf->vftype, 1, cptvf->num_vfs);
+ if (err) {
+ dev_err(dev, "Failed to register crypto algs\n");
+ goto free_irq_affinity;
+ }
+
+ err = sysfs_create_group(&dev->kobj, &otx_cptvf_sysfs_group);
+ if (err) {
+ dev_err(dev, "Creating sysfs entries failed\n");
+ goto crypto_exit;
+ }
+
+ return 0;
+
+crypto_exit:
+ otx_cpt_crypto_exit(pdev, THIS_MODULE, cptvf->vftype);
+free_irq_affinity:
+ cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);
+ cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);
+free_done_irq:
+ free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_DONE), cptvf);
+sw_cleanup:
+ cptvf_sw_cleanup(cptvf);
+free_misc_irq:
+ free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC), cptvf);
+free_vectors:
+ pci_free_irq_vectors(cptvf->pdev);
+unmap_region:
+ pci_iounmap(pdev, cptvf->reg_base);
+release_regions:
+ pci_release_regions(pdev);
+disable_device:
+ pci_disable_device(pdev);
+clear_drvdata:
+ pci_set_drvdata(pdev, NULL);
+
+ return err;
+}
+
+static void otx_cptvf_remove(struct pci_dev *pdev)
+{
+ struct otx_cptvf *cptvf = pci_get_drvdata(pdev);
+
+ if (!cptvf) {
+ dev_err(&pdev->dev, "Invalid CPT-VF device\n");
+ return;
+ }
+
+ /* Convey DOWN to PF */
+ if (otx_cptvf_send_vf_down(cptvf)) {
+ dev_err(&pdev->dev, "PF not responding to DOWN msg");
+ } else {
+ sysfs_remove_group(&pdev->dev.kobj, &otx_cptvf_sysfs_group);
+ otx_cpt_crypto_exit(pdev, THIS_MODULE, cptvf->vftype);
+ cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);
+ cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);
+ free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_DONE), cptvf);
+ free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC), cptvf);
+ cptvf_sw_cleanup(cptvf);
+ pci_free_irq_vectors(cptvf->pdev);
+ pci_iounmap(pdev, cptvf->reg_base);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ }
+}
+
+/* Supported devices */
+static const struct pci_device_id otx_cptvf_id_table[] = {
+ {PCI_VDEVICE(CAVIUM, OTX_CPT_PCI_VF_DEVICE_ID), 0},
+ { 0, } /* end of table */
+};
+
+static struct pci_driver otx_cptvf_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = otx_cptvf_id_table,
+ .probe = otx_cptvf_probe,
+ .remove = otx_cptvf_remove,
+};
+
+module_pci_driver(otx_cptvf_pci_driver);
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION("Marvell OcteonTX CPT Virtual Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, otx_cptvf_id_table);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include "otx_cptvf.h"
+
+#define CPT_MBOX_MSG_TIMEOUT 2000
+
+static char *get_mbox_opcode_str(int msg_opcode)
+{
+ char *str = "Unknown";
+
+ switch (msg_opcode) {
+ case OTX_CPT_MSG_VF_UP:
+ str = "UP";
+ break;
+
+ case OTX_CPT_MSG_VF_DOWN:
+ str = "DOWN";
+ break;
+
+ case OTX_CPT_MSG_READY:
+ str = "READY";
+ break;
+
+ case OTX_CPT_MSG_QLEN:
+ str = "QLEN";
+ break;
+
+ case OTX_CPT_MSG_QBIND_GRP:
+ str = "QBIND_GRP";
+ break;
+
+ case OTX_CPT_MSG_VQ_PRIORITY:
+ str = "VQ_PRIORITY";
+ break;
+
+ case OTX_CPT_MSG_PF_TYPE:
+ str = "PF_TYPE";
+ break;
+
+ case OTX_CPT_MSG_ACK:
+ str = "ACK";
+ break;
+
+ case OTX_CPT_MSG_NACK:
+ str = "NACK";
+ break;
+ }
+ return str;
+}
+
+static void dump_mbox_msg(struct otx_cpt_mbox *mbox_msg, int vf_id)
+{
+ char raw_data_str[OTX_CPT_MAX_MBOX_DATA_STR_SIZE];
+
+ hex_dump_to_buffer(mbox_msg, sizeof(struct otx_cpt_mbox), 16, 8,
+ raw_data_str, OTX_CPT_MAX_MBOX_DATA_STR_SIZE, false);
+ if (vf_id >= 0)
+ pr_debug("MBOX msg %s received from VF%d raw_data %s",
+ get_mbox_opcode_str(mbox_msg->msg), vf_id,
+ raw_data_str);
+ else
+ pr_debug("MBOX msg %s received from PF raw_data %s",
+ get_mbox_opcode_str(mbox_msg->msg), raw_data_str);
+}
+
+static void cptvf_send_msg_to_pf(struct otx_cptvf *cptvf,
+ struct otx_cpt_mbox *mbx)
+{
+ /* Writing mbox(1) causes interrupt */
+ writeq(mbx->msg, cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 0));
+ writeq(mbx->data, cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 1));
+}
+
+/* Interrupt handler to handle mailbox messages from VFs */
+void otx_cptvf_handle_mbox_intr(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+
+ /*
+ * MBOX[0] contains msg
+ * MBOX[1] contains data
+ */
+ mbx.msg = readq(cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 0));
+ mbx.data = readq(cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 1));
+
+ dump_mbox_msg(&mbx, -1);
+
+ switch (mbx.msg) {
+ case OTX_CPT_MSG_VF_UP:
+ cptvf->pf_acked = true;
+ cptvf->num_vfs = mbx.data;
+ break;
+ case OTX_CPT_MSG_READY:
+ cptvf->pf_acked = true;
+ cptvf->vfid = mbx.data;
+ dev_dbg(&cptvf->pdev->dev, "Received VFID %d\n", cptvf->vfid);
+ break;
+ case OTX_CPT_MSG_QBIND_GRP:
+ cptvf->pf_acked = true;
+ cptvf->vftype = mbx.data;
+ dev_dbg(&cptvf->pdev->dev, "VF %d type %s group %d\n",
+ cptvf->vfid,
+ ((mbx.data == OTX_CPT_SE_TYPES) ? "SE" : "AE"),
+ cptvf->vfgrp);
+ break;
+ case OTX_CPT_MSG_ACK:
+ cptvf->pf_acked = true;
+ break;
+ case OTX_CPT_MSG_NACK:
+ cptvf->pf_nacked = true;
+ break;
+ default:
+ dev_err(&cptvf->pdev->dev, "Invalid msg from PF, msg 0x%llx\n",
+ mbx.msg);
+ break;
+ }
+}
+
+static int cptvf_send_msg_to_pf_timeout(struct otx_cptvf *cptvf,
+ struct otx_cpt_mbox *mbx)
+{
+ int timeout = CPT_MBOX_MSG_TIMEOUT;
+ int sleep = 10;
+
+ cptvf->pf_acked = false;
+ cptvf->pf_nacked = false;
+ cptvf_send_msg_to_pf(cptvf, mbx);
+ /* Wait for previous message to be acked, timeout 2sec */
+ while (!cptvf->pf_acked) {
+ if (cptvf->pf_nacked)
+ return -EINVAL;
+ msleep(sleep);
+ if (cptvf->pf_acked)
+ break;
+ timeout -= sleep;
+ if (!timeout) {
+ dev_err(&cptvf->pdev->dev,
+ "PF didn't ack to mbox msg %llx from VF%u\n",
+ mbx->msg, cptvf->vfid);
+ return -EBUSY;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Checks if VF is able to comminicate with PF
+ * and also gets the CPT number this VF is associated to.
+ */
+int otx_cptvf_check_pf_ready(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_READY;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+
+ return ret;
+}
+
+/*
+ * Communicate VQs size to PF to program CPT(0)_PF_Q(0-15)_CTL of the VF.
+ * Must be ACKed.
+ */
+int otx_cptvf_send_vq_size_msg(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_QLEN;
+ mbx.data = cptvf->qsize;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+
+ return ret;
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+int otx_cptvf_send_vf_to_grp_msg(struct otx_cptvf *cptvf, int group)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_QBIND_GRP;
+ /* Convey group of the VF */
+ mbx.data = group;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+ if (ret)
+ return ret;
+ cptvf->vfgrp = group;
+
+ return 0;
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+int otx_cptvf_send_vf_priority_msg(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_VQ_PRIORITY;
+ /* Convey group of the VF */
+ mbx.data = cptvf->priority;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+
+ return ret;
+}
+
+/*
+ * Communicate to PF that VF is UP and running
+ */
+int otx_cptvf_send_vf_up(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_VF_UP;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+
+ return ret;
+}
+
+/*
+ * Communicate to PF that VF is DOWN and running
+ */
+int otx_cptvf_send_vf_down(struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_mbox mbx = {};
+ int ret;
+
+ mbx.msg = OTX_CPT_MSG_VF_DOWN;
+ ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+
+ return ret;
+}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "otx_cptvf.h"
+#include "otx_cptvf_algs.h"
+
+/* Completion code size and initial value */
+#define COMPLETION_CODE_SIZE 8
+#define COMPLETION_CODE_INIT 0
+
+/* SG list header size in bytes */
+#define SG_LIST_HDR_SIZE 8
+
+/* Default timeout when waiting for free pending entry in us */
+#define CPT_PENTRY_TIMEOUT 1000
+#define CPT_PENTRY_STEP 50
+
+/* Default threshold for stopping and resuming sender requests */
+#define CPT_IQ_STOP_MARGIN 128
+#define CPT_IQ_RESUME_MARGIN 512
+
+#define CPT_DMA_ALIGN 128
+
+void otx_cpt_dump_sg_list(struct pci_dev *pdev, struct otx_cpt_req_info *req)
+{
+ int i;
+
+ pr_debug("Gather list size %d\n", req->incnt);
+ for (i = 0; i < req->incnt; i++) {
+ pr_debug("Buffer %d size %d, vptr 0x%p, dmaptr 0x%p\n", i,
+ req->in[i].size, req->in[i].vptr,
+ (void *) req->in[i].dma_addr);
+ pr_debug("Buffer hexdump (%d bytes)\n",
+ req->in[i].size);
+ print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1,
+ req->in[i].vptr, req->in[i].size, false);
+ }
+
+ pr_debug("Scatter list size %d\n", req->outcnt);
+ for (i = 0; i < req->outcnt; i++) {
+ pr_debug("Buffer %d size %d, vptr 0x%p, dmaptr 0x%p\n", i,
+ req->out[i].size, req->out[i].vptr,
+ (void *) req->out[i].dma_addr);
+ pr_debug("Buffer hexdump (%d bytes)\n", req->out[i].size);
+ print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1,
+ req->out[i].vptr, req->out[i].size, false);
+ }
+}
+
+static inline struct otx_cpt_pending_entry *get_free_pending_entry(
+ struct otx_cpt_pending_queue *q,
+ int qlen)
+{
+ struct otx_cpt_pending_entry *ent = NULL;
+
+ ent = &q->head[q->rear];
+ if (unlikely(ent->busy))
+ return NULL;
+
+ q->rear++;
+ if (unlikely(q->rear == qlen))
+ q->rear = 0;
+
+ return ent;
+}
+
+static inline u32 modulo_inc(u32 index, u32 length, u32 inc)
+{
+ if (WARN_ON(inc > length))
+ inc = length;
+
+ index += inc;
+ if (unlikely(index >= length))
+ index -= length;
+
+ return index;
+}
+
+static inline void free_pentry(struct otx_cpt_pending_entry *pentry)
+{
+ pentry->completion_addr = NULL;
+ pentry->info = NULL;
+ pentry->callback = NULL;
+ pentry->areq = NULL;
+ pentry->resume_sender = false;
+ pentry->busy = false;
+}
+
+static inline int setup_sgio_components(struct pci_dev *pdev,
+ struct otx_cpt_buf_ptr *list,
+ int buf_count, u8 *buffer)
+{
+ struct otx_cpt_sglist_component *sg_ptr = NULL;
+ int ret = 0, i, j;
+ int components;
+
+ if (unlikely(!list)) {
+ dev_err(&pdev->dev, "Input list pointer is NULL\n");
+ return -EFAULT;
+ }
+
+ for (i = 0; i < buf_count; i++) {
+ if (likely(list[i].vptr)) {
+ list[i].dma_addr = dma_map_single(&pdev->dev,
+ list[i].vptr,
+ list[i].size,
+ DMA_BIDIRECTIONAL);
+ if (unlikely(dma_mapping_error(&pdev->dev,
+ list[i].dma_addr))) {
+ dev_err(&pdev->dev, "Dma mapping failed\n");
+ ret = -EIO;
+ goto sg_cleanup;
+ }
+ }
+ }
+
+ components = buf_count / 4;
+ sg_ptr = (struct otx_cpt_sglist_component *)buffer;
+ for (i = 0; i < components; i++) {
+ sg_ptr->u.s.len0 = cpu_to_be16(list[i * 4 + 0].size);
+ sg_ptr->u.s.len1 = cpu_to_be16(list[i * 4 + 1].size);
+ sg_ptr->u.s.len2 = cpu_to_be16(list[i * 4 + 2].size);
+ sg_ptr->u.s.len3 = cpu_to_be16(list[i * 4 + 3].size);
+ sg_ptr->ptr0 = cpu_to_be64(list[i * 4 + 0].dma_addr);
+ sg_ptr->ptr1 = cpu_to_be64(list[i * 4 + 1].dma_addr);
+ sg_ptr->ptr2 = cpu_to_be64(list[i * 4 + 2].dma_addr);
+ sg_ptr->ptr3 = cpu_to_be64(list[i * 4 + 3].dma_addr);
+ sg_ptr++;
+ }
+ components = buf_count % 4;
+
+ switch (components) {
+ case 3:
+ sg_ptr->u.s.len2 = cpu_to_be16(list[i * 4 + 2].size);
+ sg_ptr->ptr2 = cpu_to_be64(list[i * 4 + 2].dma_addr);
+ /* Fall through */
+ case 2:
+ sg_ptr->u.s.len1 = cpu_to_be16(list[i * 4 + 1].size);
+ sg_ptr->ptr1 = cpu_to_be64(list[i * 4 + 1].dma_addr);
+ /* Fall through */
+ case 1:
+ sg_ptr->u.s.len0 = cpu_to_be16(list[i * 4 + 0].size);
+ sg_ptr->ptr0 = cpu_to_be64(list[i * 4 + 0].dma_addr);
+ break;
+ default:
+ break;
+ }
+ return ret;
+
+sg_cleanup:
+ for (j = 0; j < i; j++) {
+ if (list[j].dma_addr) {
+ dma_unmap_single(&pdev->dev, list[i].dma_addr,
+ list[i].size, DMA_BIDIRECTIONAL);
+ }
+
+ list[j].dma_addr = 0;
+ }
+ return ret;
+}
+
+static inline int setup_sgio_list(struct pci_dev *pdev,
+ struct otx_cpt_info_buffer **pinfo,
+ struct otx_cpt_req_info *req, gfp_t gfp)
+{
+ u32 dlen, align_dlen, info_len, rlen;
+ struct otx_cpt_info_buffer *info;
+ u16 g_sz_bytes, s_sz_bytes;
+ int align = CPT_DMA_ALIGN;
+ u32 total_mem_len;
+
+ if (unlikely(req->incnt > OTX_CPT_MAX_SG_IN_CNT ||
+ req->outcnt > OTX_CPT_MAX_SG_OUT_CNT)) {
+ dev_err(&pdev->dev, "Error too many sg components\n");
+ return -EINVAL;
+ }
+
+ g_sz_bytes = ((req->incnt + 3) / 4) *
+ sizeof(struct otx_cpt_sglist_component);
+ s_sz_bytes = ((req->outcnt + 3) / 4) *
+ sizeof(struct otx_cpt_sglist_component);
+
+ dlen = g_sz_bytes + s_sz_bytes + SG_LIST_HDR_SIZE;
+ align_dlen = ALIGN(dlen, align);
+ info_len = ALIGN(sizeof(*info), align);
+ rlen = ALIGN(sizeof(union otx_cpt_res_s), align);
+ total_mem_len = align_dlen + info_len + rlen + COMPLETION_CODE_SIZE;
+
+ info = kzalloc(total_mem_len, gfp);
+ if (unlikely(!info)) {
+ dev_err(&pdev->dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+ *pinfo = info;
+ info->dlen = dlen;
+ info->in_buffer = (u8 *)info + info_len;
+
+ ((u16 *)info->in_buffer)[0] = req->outcnt;
+ ((u16 *)info->in_buffer)[1] = req->incnt;
+ ((u16 *)info->in_buffer)[2] = 0;
+ ((u16 *)info->in_buffer)[3] = 0;
+ *(u64 *)info->in_buffer = cpu_to_be64p((u64 *)info->in_buffer);
+
+ /* Setup gather (input) components */
+ if (setup_sgio_components(pdev, req->in, req->incnt,
+ &info->in_buffer[8])) {
+ dev_err(&pdev->dev, "Failed to setup gather list\n");
+ return -EFAULT;
+ }
+
+ if (setup_sgio_components(pdev, req->out, req->outcnt,
+ &info->in_buffer[8 + g_sz_bytes])) {
+ dev_err(&pdev->dev, "Failed to setup scatter list\n");
+ return -EFAULT;
+ }
+
+ info->dma_len = total_mem_len - info_len;
+ info->dptr_baddr = dma_map_single(&pdev->dev, (void *)info->in_buffer,
+ info->dma_len, DMA_BIDIRECTIONAL);
+ if (unlikely(dma_mapping_error(&pdev->dev, info->dptr_baddr))) {
+ dev_err(&pdev->dev, "DMA Mapping failed for cpt req\n");
+ return -EIO;
+ }
+ /*
+ * Get buffer for union otx_cpt_res_s response
+ * structure and its physical address
+ */
+ info->completion_addr = (u64 *)(info->in_buffer + align_dlen);
+ info->comp_baddr = info->dptr_baddr + align_dlen;
+
+ /* Create and initialize RPTR */
+ info->out_buffer = (u8 *)info->completion_addr + rlen;
+ info->rptr_baddr = info->comp_baddr + rlen;
+
+ *((u64 *) info->out_buffer) = ~((u64) COMPLETION_CODE_INIT);
+
+ return 0;
+}
+
+
+static void cpt_fill_inst(union otx_cpt_inst_s *inst,
+ struct otx_cpt_info_buffer *info,
+ struct otx_cpt_iq_cmd *cmd)
+{
+ inst->u[0] = 0x0;
+ inst->s.doneint = true;
+ inst->s.res_addr = (u64)info->comp_baddr;
+ inst->u[2] = 0x0;
+ inst->s.wq_ptr = 0;
+ inst->s.ei0 = cmd->cmd.u64;
+ inst->s.ei1 = cmd->dptr;
+ inst->s.ei2 = cmd->rptr;
+ inst->s.ei3 = cmd->cptr.u64;
+}
+
+/*
+ * On OcteonTX platform the parameter db_count is used as a count for ringing
+ * door bell. The valid values for db_count are:
+ * 0 - 1 CPT instruction will be enqueued however CPT will not be informed
+ * 1 - 1 CPT instruction will be enqueued and CPT will be informed
+ */
+static void cpt_send_cmd(union otx_cpt_inst_s *cptinst, struct otx_cptvf *cptvf)
+{
+ struct otx_cpt_cmd_qinfo *qinfo = &cptvf->cqinfo;
+ struct otx_cpt_cmd_queue *queue;
+ struct otx_cpt_cmd_chunk *curr;
+ u8 *ent;
+
+ queue = &qinfo->queue[0];
+ /*
+ * cpt_send_cmd is currently called only from critical section
+ * therefore no locking is required for accessing instruction queue
+ */
+ ent = &queue->qhead->head[queue->idx * OTX_CPT_INST_SIZE];
+ memcpy(ent, (void *) cptinst, OTX_CPT_INST_SIZE);
+
+ if (++queue->idx >= queue->qhead->size / 64) {
+ curr = queue->qhead;
+
+ if (list_is_last(&curr->nextchunk, &queue->chead))
+ queue->qhead = queue->base;
+ else
+ queue->qhead = list_next_entry(queue->qhead, nextchunk);
+ queue->idx = 0;
+ }
+ /* make sure all memory stores are done before ringing doorbell */
+ smp_wmb();
+ otx_cptvf_write_vq_doorbell(cptvf, 1);
+}
+
+static int process_request(struct pci_dev *pdev, struct otx_cpt_req_info *req,
+ struct otx_cpt_pending_queue *pqueue,
+ struct otx_cptvf *cptvf)
+{
+ struct otx_cptvf_request *cpt_req = &req->req;
+ struct otx_cpt_pending_entry *pentry = NULL;
+ union otx_cpt_ctrl_info *ctrl = &req->ctrl;
+ struct otx_cpt_info_buffer *info = NULL;
+ union otx_cpt_res_s *result = NULL;
+ struct otx_cpt_iq_cmd iq_cmd;
+ union otx_cpt_inst_s cptinst;
+ int retry, ret = 0;
+ u8 resume_sender;
+ gfp_t gfp;
+
+ gfp = (req->areq->flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? GFP_KERNEL :
+ GFP_ATOMIC;
+ ret = setup_sgio_list(pdev, &info, req, gfp);
+ if (unlikely(ret)) {
+ dev_err(&pdev->dev, "Setting up SG list failed");
+ goto request_cleanup;
+ }
+ cpt_req->dlen = info->dlen;
+
+ result = (union otx_cpt_res_s *) info->completion_addr;
+ result->s.compcode = COMPLETION_CODE_INIT;
+
+ spin_lock_bh(&pqueue->lock);
+ pentry = get_free_pending_entry(pqueue, pqueue->qlen);
+ retry = CPT_PENTRY_TIMEOUT / CPT_PENTRY_STEP;
+ while (unlikely(!pentry) && retry--) {
+ spin_unlock_bh(&pqueue->lock);
+ udelay(CPT_PENTRY_STEP);
+ spin_lock_bh(&pqueue->lock);
+ pentry = get_free_pending_entry(pqueue, pqueue->qlen);
+ }
+
+ if (unlikely(!pentry)) {
+ ret = -ENOSPC;
+ spin_unlock_bh(&pqueue->lock);
+ goto request_cleanup;
+ }
+
+ /*
+ * Check if we are close to filling in entire pending queue,
+ * if so then tell the sender to stop/sleep by returning -EBUSY
+ * We do it only for context which can sleep (GFP_KERNEL)
+ */
+ if (gfp == GFP_KERNEL &&
+ pqueue->pending_count > (pqueue->qlen - CPT_IQ_STOP_MARGIN)) {
+ pentry->resume_sender = true;
+ } else
+ pentry->resume_sender = false;
+ resume_sender = pentry->resume_sender;
+ pqueue->pending_count++;
+
+ pentry->completion_addr = info->completion_addr;
+ pentry->info = info;
+ pentry->callback = req->callback;
+ pentry->areq = req->areq;
+ pentry->busy = true;
+ info->pentry = pentry;
+ info->time_in = jiffies;
+ info->req = req;
+
+ /* Fill in the command */
+ iq_cmd.cmd.u64 = 0;
+ iq_cmd.cmd.s.opcode = cpu_to_be16(cpt_req->opcode.flags);
+ iq_cmd.cmd.s.param1 = cpu_to_be16(cpt_req->param1);
+ iq_cmd.cmd.s.param2 = cpu_to_be16(cpt_req->param2);
+ iq_cmd.cmd.s.dlen = cpu_to_be16(cpt_req->dlen);
+
+ /* 64-bit swap for microcode data reads, not needed for addresses*/
+ iq_cmd.cmd.u64 = cpu_to_be64(iq_cmd.cmd.u64);
+ iq_cmd.dptr = info->dptr_baddr;
+ iq_cmd.rptr = info->rptr_baddr;
+ iq_cmd.cptr.u64 = 0;
+ iq_cmd.cptr.s.grp = ctrl->s.grp;
+
+ /* Fill in the CPT_INST_S type command for HW interpretation */
+ cpt_fill_inst(&cptinst, info, &iq_cmd);
+
+ /* Print debug info if enabled */
+ otx_cpt_dump_sg_list(pdev, req);
+ pr_debug("Cpt_inst_s hexdump (%d bytes)\n", OTX_CPT_INST_SIZE);
+ print_hex_dump_debug("", 0, 16, 1, &cptinst, OTX_CPT_INST_SIZE, false);
+ pr_debug("Dptr hexdump (%d bytes)\n", cpt_req->dlen);
+ print_hex_dump_debug("", 0, 16, 1, info->in_buffer,
+ cpt_req->dlen, false);
+
+ /* Send CPT command */
+ cpt_send_cmd(&cptinst, cptvf);
+
+ /*
+ * We allocate and prepare pending queue entry in critical section
+ * together with submitting CPT instruction to CPT instruction queue
+ * to make sure that order of CPT requests is the same in both
+ * pending and instruction queues
+ */
+ spin_unlock_bh(&pqueue->lock);
+
+ ret = resume_sender ? -EBUSY : -EINPROGRESS;
+ return ret;
+
+request_cleanup:
+ do_request_cleanup(pdev, info);
+ return ret;
+}
+
+int otx_cpt_do_request(struct pci_dev *pdev, struct otx_cpt_req_info *req,
+ int cpu_num)
+{
+ struct otx_cptvf *cptvf = pci_get_drvdata(pdev);
+
+ if (!otx_cpt_device_ready(cptvf)) {
+ dev_err(&pdev->dev, "CPT Device is not ready");
+ return -ENODEV;
+ }
+
+ if ((cptvf->vftype == OTX_CPT_SE_TYPES) && (!req->ctrl.s.se_req)) {
+ dev_err(&pdev->dev, "CPTVF-%d of SE TYPE got AE request",
+ cptvf->vfid);
+ return -EINVAL;
+ } else if ((cptvf->vftype == OTX_CPT_AE_TYPES) &&
+ (req->ctrl.s.se_req)) {
+ dev_err(&pdev->dev, "CPTVF-%d of AE TYPE got SE request",
+ cptvf->vfid);
+ return -EINVAL;
+ }
+
+ return process_request(pdev, req, &cptvf->pqinfo.queue[0], cptvf);
+}
+
+static int cpt_process_ccode(struct pci_dev *pdev,
+ union otx_cpt_res_s *cpt_status,
+ struct otx_cpt_info_buffer *cpt_info,
+ struct otx_cpt_req_info *req, u32 *res_code)
+{
+ u8 ccode = cpt_status->s.compcode;
+ union otx_cpt_error_code ecode;
+
+ ecode.u = be64_to_cpu(*((u64 *) cpt_info->out_buffer));
+ switch (ccode) {
+ case CPT_COMP_E_FAULT:
+ dev_err(&pdev->dev,
+ "Request failed with DMA fault\n");
+ otx_cpt_dump_sg_list(pdev, req);
+ break;
+
+ case CPT_COMP_E_SWERR:
+ dev_err(&pdev->dev,
+ "Request failed with software error code %d\n",
+ ecode.s.ccode);
+ otx_cpt_dump_sg_list(pdev, req);
+ break;
+
+ case CPT_COMP_E_HWERR:
+ dev_err(&pdev->dev,
+ "Request failed with hardware error\n");
+ otx_cpt_dump_sg_list(pdev, req);
+ break;
+
+ case COMPLETION_CODE_INIT:
+ /* check for timeout */
+ if (time_after_eq(jiffies, cpt_info->time_in +
+ OTX_CPT_COMMAND_TIMEOUT * HZ))
+ dev_warn(&pdev->dev, "Request timed out 0x%p", req);
+ else if (cpt_info->extra_time < OTX_CPT_TIME_IN_RESET_COUNT) {
+ cpt_info->time_in = jiffies;
+ cpt_info->extra_time++;
+ }
+ return 1;
+
+ case CPT_COMP_E_GOOD:
+ /* Check microcode completion code */
+ if (ecode.s.ccode) {
+ /*
+ * If requested hmac is truncated and ucode returns
+ * s/g write length error then we report success
+ * because ucode writes as many bytes of calculated
+ * hmac as available in gather buffer and reports
+ * s/g write length error if number of bytes in gather
+ * buffer is less than full hmac size.
+ */
+ if (req->is_trunc_hmac &&
+ ecode.s.ccode == ERR_SCATTER_GATHER_WRITE_LENGTH) {
+ *res_code = 0;
+ break;
+ }
+
+ dev_err(&pdev->dev,
+ "Request failed with software error code 0x%x\n",
+ ecode.s.ccode);
+ otx_cpt_dump_sg_list(pdev, req);
+ break;
+ }
+
+ /* Request has been processed with success */
+ *res_code = 0;
+ break;
+
+ default:
+ dev_err(&pdev->dev, "Request returned invalid status\n");
+ break;
+ }
+
+ return 0;
+}
+
+static inline void process_pending_queue(struct pci_dev *pdev,
+ struct otx_cpt_pending_queue *pqueue)
+{
+ void (*callback)(int status, void *arg1, void *arg2);
+ struct otx_cpt_pending_entry *resume_pentry = NULL;
+ struct otx_cpt_pending_entry *pentry = NULL;
+ struct otx_cpt_info_buffer *cpt_info = NULL;
+ union otx_cpt_res_s *cpt_status = NULL;
+ struct otx_cpt_req_info *req = NULL;
+ struct crypto_async_request *areq;
+ u32 res_code, resume_index;
+
+ while (1) {
+ spin_lock_bh(&pqueue->lock);
+ pentry = &pqueue->head[pqueue->front];
+
+ if (WARN_ON(!pentry)) {
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ }
+
+ res_code = -EINVAL;
+ if (unlikely(!pentry->busy)) {
+ spin_unlock_bh(&pqueue->lock);
+ break;
+ }
+
+ if (unlikely(!pentry->callback)) {
+ dev_err(&pdev->dev, "Callback NULL\n");
+ goto process_pentry;
+ }
+
+ cpt_info = pentry->info;
+ if (unlikely(!cpt_info)) {
+ dev_err(&pdev->dev, "Pending entry post arg NULL\n");
+ goto process_pentry;
+ }
+
+ req = cpt_info->req;
+ if (unlikely(!req)) {
+ dev_err(&pdev->dev, "Request NULL\n");
+ goto process_pentry;
+ }
+
+ cpt_status = (union otx_cpt_res_s *) pentry->completion_addr;
+ if (unlikely(!cpt_status)) {
+ dev_err(&pdev->dev, "Completion address NULL\n");
+ goto process_pentry;
+ }
+
+ if (cpt_process_ccode(pdev, cpt_status, cpt_info, req,
+ &res_code)) {
+ spin_unlock_bh(&pqueue->lock);
+ return;
+ }
+ cpt_info->pdev = pdev;
+
+process_pentry:
+ /*
+ * Check if we should inform sending side to resume
+ * We do it CPT_IQ_RESUME_MARGIN elements in advance before
+ * pending queue becomes empty
+ */
+ resume_index = modulo_inc(pqueue->front, pqueue->qlen,
+ CPT_IQ_RESUME_MARGIN);
+ resume_pentry = &pqueue->head[resume_index];
+ if (resume_pentry &&
+ resume_pentry->resume_sender) {
+ resume_pentry->resume_sender = false;
+ callback = resume_pentry->callback;
+ areq = resume_pentry->areq;
+
+ if (callback) {
+ spin_unlock_bh(&pqueue->lock);
+
+ /*
+ * EINPROGRESS is an indication for sending
+ * side that it can resume sending requests
+ */
+ callback(-EINPROGRESS, areq, cpt_info);
+ spin_lock_bh(&pqueue->lock);
+ }
+ }
+
+ callback = pentry->callback;
+ areq = pentry->areq;
+ free_pentry(pentry);
+
+ pqueue->pending_count--;
+ pqueue->front = modulo_inc(pqueue->front, pqueue->qlen, 1);
+ spin_unlock_bh(&pqueue->lock);
+
+ /*
+ * Call callback after current pending entry has been
+ * processed, we don't do it if the callback pointer is
+ * invalid.
+ */
+ if (callback)
+ callback(res_code, areq, cpt_info);
+ }
+}
+
+void otx_cpt_post_process(struct otx_cptvf_wqe *wqe)
+{
+ process_pending_queue(wqe->cptvf->pdev, &wqe->cptvf->pqinfo.queue[0]);
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0
+ * Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __OTX_CPTVF_REQUEST_MANAGER_H
+#define __OTX_CPTVF_REQUEST_MANAGER_H
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <linux/pci.h>
+#include "otx_cpt_hw_types.h"
+
+/*
+ * Maximum total number of SG buffers is 100, we divide it equally
+ * between input and output
+ */
+#define OTX_CPT_MAX_SG_IN_CNT 50
+#define OTX_CPT_MAX_SG_OUT_CNT 50
+
+/* DMA mode direct or SG */
+#define OTX_CPT_DMA_DIRECT_DIRECT 0
+#define OTX_CPT_DMA_GATHER_SCATTER 1
+
+/* Context source CPTR or DPTR */
+#define OTX_CPT_FROM_CPTR 0
+#define OTX_CPT_FROM_DPTR 1
+
+/* CPT instruction queue alignment */
+#define OTX_CPT_INST_Q_ALIGNMENT 128
+#define OTX_CPT_MAX_REQ_SIZE 65535
+
+/* Default command timeout in seconds */
+#define OTX_CPT_COMMAND_TIMEOUT 4
+#define OTX_CPT_TIMER_HOLD 0x03F
+#define OTX_CPT_COUNT_HOLD 32
+#define OTX_CPT_TIME_IN_RESET_COUNT 5
+
+/* Minimum and maximum values for interrupt coalescing */
+#define OTX_CPT_COALESC_MIN_TIME_WAIT 0x0
+#define OTX_CPT_COALESC_MAX_TIME_WAIT ((1<<16)-1)
+#define OTX_CPT_COALESC_MIN_NUM_WAIT 0x0
+#define OTX_CPT_COALESC_MAX_NUM_WAIT ((1<<20)-1)
+
+union otx_cpt_opcode_info {
+ u16 flags;
+ struct {
+ u8 major;
+ u8 minor;
+ } s;
+};
+
+struct otx_cptvf_request {
+ u32 param1;
+ u32 param2;
+ u16 dlen;
+ union otx_cpt_opcode_info opcode;
+};
+
+struct otx_cpt_buf_ptr {
+ u8 *vptr;
+ dma_addr_t dma_addr;
+ u16 size;
+};
+
+union otx_cpt_ctrl_info {
+ u32 flags;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u32 reserved0:26;
+ u32 grp:3; /* Group bits */
+ u32 dma_mode:2; /* DMA mode */
+ u32 se_req:1; /* To SE core */
+#else
+ u32 se_req:1; /* To SE core */
+ u32 dma_mode:2; /* DMA mode */
+ u32 grp:3; /* Group bits */
+ u32 reserved0:26;
+#endif
+ } s;
+};
+
+/*
+ * CPT_INST_S software command definitions
+ * Words EI (0-3)
+ */
+union otx_cpt_iq_cmd_word0 {
+ u64 u64;
+ struct {
+ u16 opcode;
+ u16 param1;
+ u16 param2;
+ u16 dlen;
+ } s;
+};
+
+union otx_cpt_iq_cmd_word3 {
+ u64 u64;
+ struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u64 grp:3;
+ u64 cptr:61;
+#else
+ u64 cptr:61;
+ u64 grp:3;
+#endif
+ } s;
+};
+
+struct otx_cpt_iq_cmd {
+ union otx_cpt_iq_cmd_word0 cmd;
+ u64 dptr;
+ u64 rptr;
+ union otx_cpt_iq_cmd_word3 cptr;
+};
+
+struct otx_cpt_sglist_component {
+ union {
+ u64 len;
+ struct {
+ u16 len0;
+ u16 len1;
+ u16 len2;
+ u16 len3;
+ } s;
+ } u;
+ u64 ptr0;
+ u64 ptr1;
+ u64 ptr2;
+ u64 ptr3;
+};
+
+struct otx_cpt_pending_entry {
+ u64 *completion_addr; /* Completion address */
+ struct otx_cpt_info_buffer *info;
+ /* Kernel async request callback */
+ void (*callback)(int status, void *arg1, void *arg2);
+ struct crypto_async_request *areq; /* Async request callback arg */
+ u8 resume_sender; /* Notify sender to resume sending requests */
+ u8 busy; /* Entry status (free/busy) */
+};
+
+struct otx_cpt_pending_queue {
+ struct otx_cpt_pending_entry *head; /* Head of the queue */
+ u32 front; /* Process work from here */
+ u32 rear; /* Append new work here */
+ u32 pending_count; /* Pending requests count */
+ u32 qlen; /* Queue length */
+ spinlock_t lock; /* Queue lock */
+};
+
+struct otx_cpt_req_info {
+ /* Kernel async request callback */
+ void (*callback)(int status, void *arg1, void *arg2);
+ struct crypto_async_request *areq; /* Async request callback arg */
+ struct otx_cptvf_request req;/* Request information (core specific) */
+ union otx_cpt_ctrl_info ctrl;/* User control information */
+ struct otx_cpt_buf_ptr in[OTX_CPT_MAX_SG_IN_CNT];
+ struct otx_cpt_buf_ptr out[OTX_CPT_MAX_SG_OUT_CNT];
+ u8 *iv_out; /* IV to send back */
+ u16 rlen; /* Output length */
+ u8 incnt; /* Number of input buffers */
+ u8 outcnt; /* Number of output buffers */
+ u8 req_type; /* Type of request */
+ u8 is_enc; /* Is a request an encryption request */
+ u8 is_trunc_hmac;/* Is truncated hmac used */
+};
+
+struct otx_cpt_info_buffer {
+ struct otx_cpt_pending_entry *pentry;
+ struct otx_cpt_req_info *req;
+ struct pci_dev *pdev;
+ u64 *completion_addr;
+ u8 *out_buffer;
+ u8 *in_buffer;
+ dma_addr_t dptr_baddr;
+ dma_addr_t rptr_baddr;
+ dma_addr_t comp_baddr;
+ unsigned long time_in;
+ u32 dlen;
+ u32 dma_len;
+ u8 extra_time;
+};
+
+static inline void do_request_cleanup(struct pci_dev *pdev,
+ struct otx_cpt_info_buffer *info)
+{
+ struct otx_cpt_req_info *req;
+ int i;
+
+ if (info->dptr_baddr)
+ dma_unmap_single(&pdev->dev, info->dptr_baddr,
+ info->dma_len, DMA_BIDIRECTIONAL);
+
+ if (info->req) {
+ req = info->req;
+ for (i = 0; i < req->outcnt; i++) {
+ if (req->out[i].dma_addr)
+ dma_unmap_single(&pdev->dev,
+ req->out[i].dma_addr,
+ req->out[i].size,
+ DMA_BIDIRECTIONAL);
+ }
+
+ for (i = 0; i < req->incnt; i++) {
+ if (req->in[i].dma_addr)
+ dma_unmap_single(&pdev->dev,
+ req->in[i].dma_addr,
+ req->in[i].size,
+ DMA_BIDIRECTIONAL);
+ }
+ }
+ kzfree(info);
+}
+
+struct otx_cptvf_wqe;
+void otx_cpt_dump_sg_list(struct pci_dev *pdev, struct otx_cpt_req_info *req);
+void otx_cpt_post_process(struct otx_cptvf_wqe *wqe);
+int otx_cpt_do_request(struct pci_dev *pdev, struct otx_cpt_req_info *req,
+ int cpu_num);
+
+#endif /* __OTX_CPTVF_REQUEST_MANAGER_H */
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