Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Don't destroy user event fields when removal fails

   User event fields are destroyed before the event is removed from
   visibility. But that can fail leaving the still visible event with no
   fields. Move the destroying of the fields to after the event is
   successfully removed from visibility.

 - Initialize function graph state is fork before calling
   copy_exec_state()

   For non-CLONE_VM forks, copy_exec_state() allocates a new
   task_exec_state. If that allocation fails, ftrace_graph_exit_task()
   will free the tasks ret_stack pointer. Since that pointer is still
   using the parent's ret_stack, it mistakenly frees the parent's
   pointer too.

   Call ftrace_graph_init() on the task first which will NULL out the
   new tasks's ret_stack and if the copy fails, it will not free
   anything.

 - Remove FGRAPH_MAX_INDEX

   The macro FGRAPH_MAX_INDEX was added but never used. Remove it.

 - Save ent_size in function graph printing of nested functions

   The function graph tracer needs to look at the next event to see if
   the next event is the return of the current function entry. If it is,
   it prints a single line:

	ktime_get();

   Otherwise it prints it like a nested function:

	tick_nohz_irq_exit() {
	    ktime_get();
	    kcpustat_irq_exit();
	}

   In order to look at the next event, it must save the current event so
   that it has the information to print from it. It saves the event in
   the iterator descriptor called "ent". What it doesn't save is the
   ent_size of the event which is now used to know if the function graph
   arguments are to be printed. The peek doesn't save the size so the
   size used happens to be that of the size of the last event that was
   seen.

   Save the entry event size in the iterator descriptor so that the
   correct size is used.

 - Fix several errors with freeing data in the histogram code

   The histogram code had a lot of leaked or or incorrect accounting
   when failures happen. Correct them.

 - Fix histogram regression of .percent and .graph modifiers

   Up until 6.3 histogram values could have "percent" or "graph"
   modifiers that changed how they were printed. But a change that added
   restricting histograms values from being strings, stack traces and
   other modifiers inadvertently prevented them from using the percent
   and graph modifiers, which were legal use cases for values.

   Put back the percent and graph modifiers.

 - Fix various typos in the comments

 - Set the trace_clock before initializing a histogram with clock
   argument

   The histogram API allows the user to specific which trace clock to
   use via a "clock=" string. The histogram is set up first before the
   clock is checked. If the passed in clock is not valid, it exits
   without fully fixing up the histogram leaving it on the list and a
   use-after-free can trigger.

   Update the clock argument first and if it fails then exit gracefully
   before the histogram trigger is placed on any lists.

 - Restore :mod: trailer after parsing in ftrace_set_clr_event

   The function ftrace_set_clr_event() modifies the parse string and
   needs to put it back to what was passed in. It searches for ":mod:"
   via a strsep() but fails to put back the first ':' in the string.

   Add back the ':' in the passed in string.

 - Take trace_array reference when opening a tracer options file

   The options files are dynamically created and some tracers add their
   own options. When a tracer adds their own list of options, the
   trace_array holding them has an array to hold the list of options for
   each tracer. This array increases in size via a krealloc(), and the
   new entry gets a newly allocated array to hold the options of the new
   tracer being added.

   The element in each entry of the tracer's option array holds a
   pointer back to the trace_array, a pointer to the tracer it is
   associated to, a pointer to the flags of the option.

   The issue is that these arrays are freed when the trace_array is
   freed when its instance it represents is removed from the instances
   directory. There's a race that an open of one of these options files
   can happen when the instance is being removed.

   Add a new helper function to be called by the open function of the
   options file to iterate all existing trace_arrays under a lock and
   find the one that has the given option element in one of it's tracer
   arrays. If found, then update the associated trace_array's reference
   counter to keep it from being freed. If not found, have the open call
   return -ENODEV.

 - Disable interrupts when acquiring the lock in rb_wake_up_waiters()

   The function rb_wake_up_waiters() assumes it will be called in
   interrupt context and does not disable irqs when taking
   cpu_buffer->reader_lock, which can be called in hard interrupt
   context. The issue is in PREEMPT_RT, this function is called in
   thread context leaving this lock open to a deadlock.

   Take the lock with interrupts disabled.

 - Use rcu_assign_pointer() for tmp_ops filter hash

   The tmp_ops used in update_ftrace_direct_mod() assigns its
   filter_hash field directly, but that field is annotated as __rcu and
   sparse complains. Assign it with rcu_assign_pointer()

 - Fix use-after-free in enable_trigger_private_data_free()

   The trace_event_call is accessed through the event_trigger_data's
   trace_event_file pointer to put the trace_event_call on freeing. The
   issue is that the trace_event_file data may have been freed already
   causing a use-after-free. Add a field to the event_trigger_data that
   points directly to the trace_event_call so that it can decrement its
   reference directly without needing to go through the
   trace_event_file.

 - Fix accounting of buffer data remote headers

   trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount
   the number of pages is needed for the asked for size as it doesn't
   take into account the meta data on each page. Add a helper function
   to do the calculation properly and use that in these functions.

 - Catch nr_page_va overflow in ring_buffer_desc sizing

   The number of pages per remote ring buffer is capped by
   ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to
   overflow that field would silently allocate a descriptor smaller than
   what was asked for.

 - Do not resize the subbuf order if any per_cpu buffer is disabled

   The mmapping of ring buffers disables resizing the subbuffers, but it
   is done per-cpu whereas the subbuf size change is done for all the
   per_cpu buffers under the buffer->mutex. It could change the size of
   some while the mapping is happening on others. Have the resize of the
   subbuf order check all the per_cpu buffers under the lock to see if
   any of them is disabled before starting and causing an inconsistency
   between buffers that are being mapped.

* tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits)
  ring-buffer: Check resize_disabled before publishing the new subbuf order
  tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  tracing/remotes: Account for ring buffer page header in size calculation
  tracing: Don't dereference trace_event_file in deferred trigger free
  ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  tracing: Take trace_array reference when opening a tracer options file
  tracing: Fix ring_buffer_read_page_size() kernel-doc
  tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event()
  tracing: Fix memory corruption from a "STACKTRACE" histogram key
  tracing: Fix memory corruption from the histogram stacktrace modifier
  tracing: Undo the registration when enabling the histogram trigger fails
  tracing: Take the reference before publishing the named histogram trigger
  tracing: Set the trace clock before registering the histogram trigger
  tracing: Fix typo "preceeded" in comment
  tracing: Fix typo "availabe" in comment
  tracing: Let histogram values keep the percent and graph modifiers
  tracing: Keep the entry count when the histogram stats allocation fails
  tracing: Free histogram the field rejected for a bad modifier
  tracing: Free histogram the var ref when its initialization fails
  ...

1 files changed, 1172 insertions, 0 deletions

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
new file mode 100644
index 000000000..320be5d77
--- /dev/null
+++ b/drivers/crypto/caam/ctrl.c
@@ -0,0 +1,1172 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* * CAAM control-plane driver backend
+ * Controller-level driver, kernel property detection, initialization
+ *
+ * Copyright 2008-2012 Freescale Semiconductor, Inc.
+ * Copyright 2018-2019, 2023 NXP
+ */
+
+#include <linux/device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/sys_soc.h>
+#include <linux/fsl/mc.h>
+
+#include "compat.h"
+#include "debugfs.h"
+#include "regs.h"
+#include "intern.h"
+#include "jr.h"
+#include "desc_constr.h"
+#include "ctrl.h"
+
+bool caam_dpaa2;
+EXPORT_SYMBOL(caam_dpaa2);
+
+#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI
+#include "qi.h"
+#endif
+
+/*
+ * Descriptor to instantiate RNG State Handle 0 in normal mode and
+ * load the JDKEK, TDKEK and TDSK registers
+ */
+static void build_instantiation_desc(u32 *desc, int handle, int do_sk)
+{
+	u32 *jump_cmd, op_flags;
+
+	init_job_desc(desc, 0);
+
+	op_flags = OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG |
+			(handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INIT |
+			OP_ALG_PR_ON;
+
+	/* INIT RNG in non-test mode */
+	append_operation(desc, op_flags);
+
+	if (!handle && do_sk) {
+		/*
+		 * For SH0, Secure Keys must be generated as well
+		 */
+
+		/* wait for done */
+		jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1);
+		set_jump_tgt_here(desc, jump_cmd);
+
+		/*
+		 * load 1 to clear written reg:
+		 * resets the done interrupt and returns the RNG to idle.
+		 */
+		append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW);
+
+		/* Initialize State Handle  */
+		append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG |
+				 OP_ALG_AAI_RNG4_SK);
+	}
+
+	append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT);
+}
+
+/* Descriptor for deinstantiation of State Handle 0 of the RNG block. */
+static void build_deinstantiation_desc(u32 *desc, int handle)
+{
+	init_job_desc(desc, 0);
+
+	/* Uninstantiate State Handle 0 */
+	append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG |
+			 (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INITFINAL);
+
+	append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id imx8m_machine_match[] = {
+	{ .compatible = "fsl,imx8mm", },
+	{ .compatible = "fsl,imx8mn", },
+	{ .compatible = "fsl,imx8mp", },
+	{ .compatible = "fsl,imx8mq", },
+	{ .compatible = "fsl,imx8ulp", },
+	{ }
+};
+#endif
+
+/*
+ * run_descriptor_deco0 - runs a descriptor on DECO0, under direct control of
+ *			  the software (no JR/QI used).
+ * @ctrldev - pointer to device
+ * @status - descriptor status, after being run
+ *
+ * Return: - 0 if no error occurred
+ *	   - -ENODEV if the DECO couldn't be acquired
+ *	   - -EAGAIN if an error occurred while executing the descriptor
+ */
+static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc,
+					u32 *status)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev);
+	struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl;
+	struct caam_deco __iomem *deco = ctrlpriv->deco;
+	unsigned int timeout = 100000;
+	u32 deco_dbg_reg, deco_state, flags;
+	int i;
+
+
+	if (ctrlpriv->virt_en == 1 ||
+	    /*
+	     * Apparently on i.MX8M{Q,M,N,P} it doesn't matter if virt_en == 1
+	     * and the following steps should be performed regardless
+	     */
+	    of_match_node(imx8m_machine_match, of_root)) {
+		clrsetbits_32(&ctrl->deco_rsr, 0, DECORSR_JR0);
+
+		while (!(rd_reg32(&ctrl->deco_rsr) & DECORSR_VALID) &&
+		       --timeout)
+			cpu_relax();
+
+		timeout = 100000;
+	}
+
+	clrsetbits_32(&ctrl->deco_rq, 0, DECORR_RQD0ENABLE);
+
+	while (!(rd_reg32(&ctrl->deco_rq) & DECORR_DEN0) &&
+								 --timeout)
+		cpu_relax();
+
+	if (!timeout) {
+		dev_err(ctrldev, "failed to acquire DECO 0\n");
+		clrsetbits_32(&ctrl->deco_rq, DECORR_RQD0ENABLE, 0);
+		return -ENODEV;
+	}
+
+	for (i = 0; i < desc_len(desc); i++)
+		wr_reg32(&deco->descbuf[i], caam32_to_cpu(*(desc + i)));
+
+	flags = DECO_JQCR_WHL;
+	/*
+	 * If the descriptor length is longer than 4 words, then the
+	 * FOUR bit in JRCTRL register must be set.
+	 */
+	if (desc_len(desc) >= 4)
+		flags |= DECO_JQCR_FOUR;
+
+	/* Instruct the DECO to execute it */
+	clrsetbits_32(&deco->jr_ctl_hi, 0, flags);
+
+	timeout = 10000000;
+	do {
+		deco_dbg_reg = rd_reg32(&deco->desc_dbg);
+
+		if (ctrlpriv->era < 10)
+			deco_state = (deco_dbg_reg & DESC_DBG_DECO_STAT_MASK) >>
+				     DESC_DBG_DECO_STAT_SHIFT;
+		else
+			deco_state = (rd_reg32(&deco->dbg_exec) &
+				      DESC_DER_DECO_STAT_MASK) >>
+				     DESC_DER_DECO_STAT_SHIFT;
+
+		/*
+		 * If an error occurred in the descriptor, then
+		 * the DECO status field will be set to 0x0D
+		 */
+		if (deco_state == DECO_STAT_HOST_ERR)
+			break;
+
+		cpu_relax();
+	} while ((deco_dbg_reg & DESC_DBG_DECO_STAT_VALID) && --timeout);
+
+	*status = rd_reg32(&deco->op_status_hi) &
+		  DECO_OP_STATUS_HI_ERR_MASK;
+
+	if (ctrlpriv->virt_en == 1)
+		clrsetbits_32(&ctrl->deco_rsr, DECORSR_JR0, 0);
+
+	/* Mark the DECO as free */
+	clrsetbits_32(&ctrl->deco_rq, DECORR_RQD0ENABLE, 0);
+
+	if (!timeout)
+		return -EAGAIN;
+
+	return 0;
+}
+
+/*
+ * deinstantiate_rng - builds and executes a descriptor on DECO0,
+ *		       which deinitializes the RNG block.
+ * @ctrldev - pointer to device
+ * @state_handle_mask - bitmask containing the instantiation status
+ *			for the RNG4 state handles which exist in
+ *			the RNG4 block: 1 if it's been instantiated
+ *
+ * Return: - 0 if no error occurred
+ *	   - -ENOMEM if there isn't enough memory to allocate the descriptor
+ *	   - -ENODEV if DECO0 couldn't be acquired
+ *	   - -EAGAIN if an error occurred when executing the descriptor
+ */
+static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask)
+{
+	u32 *desc, status;
+	int sh_idx, ret = 0;
+
+	desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL);
+	if (!desc)
+		return -ENOMEM;
+
+	for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) {
+		/*
+		 * If the corresponding bit is set, then it means the state
+		 * handle was initialized by us, and thus it needs to be
+		 * deinitialized as well
+		 */
+		if ((1 << sh_idx) & state_handle_mask) {
+			/*
+			 * Create the descriptor for deinstantating this state
+			 * handle
+			 */
+			build_deinstantiation_desc(desc, sh_idx);
+
+			/* Try to run it through DECO0 */
+			ret = run_descriptor_deco0(ctrldev, desc, &status);
+
+			if (ret ||
+			    (status && status != JRSTA_SSRC_JUMP_HALT_CC)) {
+				dev_err(ctrldev,
+					"Failed to deinstantiate RNG4 SH%d\n",
+					sh_idx);
+				break;
+			}
+			dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx);
+		}
+	}
+
+	kfree(desc);
+
+	return ret;
+}
+
+static void devm_deinstantiate_rng(void *data)
+{
+	struct device *ctrldev = data;
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev);
+
+	/*
+	 * De-initialize RNG state handles initialized by this driver.
+	 * In case of SoCs with Management Complex, RNG is managed by MC f/w.
+	 */
+	if (ctrlpriv->rng4_sh_init)
+		deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init);
+}
+
+/*
+ * instantiate_rng - builds and executes a descriptor on DECO0,
+ *		     which initializes the RNG block.
+ * @ctrldev - pointer to device
+ * @state_handle_mask - bitmask containing the instantiation status
+ *			for the RNG4 state handles which exist in
+ *			the RNG4 block: 1 if it's been instantiated
+ *			by an external entry, 0 otherwise.
+ * @gen_sk  - generate data to be loaded into the JDKEK, TDKEK and TDSK;
+ *	      Caution: this can be done only once; if the keys need to be
+ *	      regenerated, a POR is required
+ *
+ * Return: - 0 if no error occurred
+ *	   - -ENOMEM if there isn't enough memory to allocate the descriptor
+ *	   - -ENODEV if DECO0 couldn't be acquired
+ *	   - -EAGAIN if an error occurred when executing the descriptor
+ *	      f.i. there was a RNG hardware error due to not "good enough"
+ *	      entropy being acquired.
+ */
+static int instantiate_rng(struct device *ctrldev, int state_handle_mask,
+			   int gen_sk)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev);
+	struct caam_ctrl __iomem *ctrl;
+	u32 *desc, status = 0, rdsta_val;
+	int ret = 0, sh_idx;
+
+	ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
+	desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL);
+	if (!desc)
+		return -ENOMEM;
+
+	for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) {
+		const u32 rdsta_if = RDSTA_IF0 << sh_idx;
+		const u32 rdsta_pr = RDSTA_PR0 << sh_idx;
+		const u32 rdsta_mask = rdsta_if | rdsta_pr;
+
+		/* Clear the contents before using the descriptor */
+		memset(desc, 0x00, CAAM_CMD_SZ * 7);
+
+		/*
+		 * If the corresponding bit is set, this state handle
+		 * was initialized by somebody else, so it's left alone.
+		 */
+		if (rdsta_if & state_handle_mask) {
+			if (rdsta_pr & state_handle_mask)
+				continue;
+
+			dev_info(ctrldev,
+				 "RNG4 SH%d was previously instantiated without prediction resistance. Tearing it down\n",
+				 sh_idx);
+
+			ret = deinstantiate_rng(ctrldev, rdsta_if);
+			if (ret)
+				break;
+		}
+
+		/* Create the descriptor for instantiating RNG State Handle */
+		build_instantiation_desc(desc, sh_idx, gen_sk);
+
+		/* Try to run it through DECO0 */
+		ret = run_descriptor_deco0(ctrldev, desc, &status);
+
+		/*
+		 * If ret is not 0, or descriptor status is not 0, then
+		 * something went wrong. No need to try the next state
+		 * handle (if available), bail out here.
+		 * Also, if for some reason, the State Handle didn't get
+		 * instantiated although the descriptor has finished
+		 * without any error (HW optimizations for later
+		 * CAAM eras), then try again.
+		 */
+		if (ret)
+			break;
+
+		rdsta_val = rd_reg32(&ctrl->r4tst[0].rdsta) & RDSTA_MASK;
+		if ((status && status != JRSTA_SSRC_JUMP_HALT_CC) ||
+		    (rdsta_val & rdsta_mask) != rdsta_mask) {
+			ret = -EAGAIN;
+			break;
+		}
+
+		dev_info(ctrldev, "Instantiated RNG4 SH%d\n", sh_idx);
+	}
+
+	kfree(desc);
+
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(ctrldev, devm_deinstantiate_rng, ctrldev);
+}
+
+/*
+ * kick_trng - sets the various parameters for enabling the initialization
+ *	       of the RNG4 block in CAAM
+ * @dev - pointer to the controller device
+ * @ent_delay - Defines the length (in system clocks) of each entropy sample.
+ */
+static void kick_trng(struct device *dev, int ent_delay)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	struct caam_ctrl __iomem *ctrl;
+	struct rng4tst __iomem *r4tst;
+	u32 val, rtsdctl;
+
+	ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
+	r4tst = &ctrl->r4tst[0];
+
+	/*
+	 * Setting both RTMCTL:PRGM and RTMCTL:TRNG_ACC causes TRNG to
+	 * properly invalidate the entropy in the entropy register and
+	 * force re-generation.
+	 */
+	clrsetbits_32(&r4tst->rtmctl, 0, RTMCTL_PRGM | RTMCTL_ACC);
+
+	/*
+	 * Performance-wise, it does not make sense to
+	 * set the delay to a value that is lower
+	 * than the last one that worked (i.e. the state handles
+	 * were instantiated properly).
+	 */
+	rtsdctl = rd_reg32(&r4tst->rtsdctl);
+	val = (rtsdctl & RTSDCTL_ENT_DLY_MASK) >> RTSDCTL_ENT_DLY_SHIFT;
+	if (ent_delay > val) {
+		val = ent_delay;
+		/* min. freq. count, equal to 1/4 of the entropy sample length */
+		wr_reg32(&r4tst->rtfrqmin, val >> 2);
+		/* disable maximum frequency count */
+		wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
+	}
+
+	wr_reg32(&r4tst->rtsdctl, (val << RTSDCTL_ENT_DLY_SHIFT) |
+		 RTSDCTL_SAMP_SIZE_VAL);
+
+	/*
+	 * To avoid reprogramming the self-test parameters over and over again,
+	 * use RTSDCTL[SAMP_SIZE] as an indicator.
+	 */
+	if ((rtsdctl & RTSDCTL_SAMP_SIZE_MASK) != RTSDCTL_SAMP_SIZE_VAL) {
+		wr_reg32(&r4tst->rtscmisc, (2 << 16) | 32);
+		wr_reg32(&r4tst->rtpkrrng, 570);
+		wr_reg32(&r4tst->rtpkrmax, 1600);
+		wr_reg32(&r4tst->rtscml, (122 << 16) | 317);
+		wr_reg32(&r4tst->rtscrl[0], (80 << 16) | 107);
+		wr_reg32(&r4tst->rtscrl[1], (57 << 16) | 62);
+		wr_reg32(&r4tst->rtscrl[2], (39 << 16) | 39);
+		wr_reg32(&r4tst->rtscrl[3], (27 << 16) | 26);
+		wr_reg32(&r4tst->rtscrl[4], (19 << 16) | 18);
+		wr_reg32(&r4tst->rtscrl[5], (18 << 16) | 17);
+	}
+
+	/*
+	 * select raw sampling in both entropy shifter
+	 * and statistical checker; ; put RNG4 into run mode
+	 */
+	clrsetbits_32(&r4tst->rtmctl, RTMCTL_PRGM | RTMCTL_ACC,
+		      RTMCTL_SAMP_MODE_RAW_ES_SC);
+}
+
+static int caam_get_era_from_hw(struct caam_perfmon __iomem *perfmon)
+{
+	static const struct {
+		u16 ip_id;
+		u8 maj_rev;
+		u8 era;
+	} id[] = {
+		{0x0A10, 1, 1},
+		{0x0A10, 2, 2},
+		{0x0A12, 1, 3},
+		{0x0A14, 1, 3},
+		{0x0A14, 2, 4},
+		{0x0A16, 1, 4},
+		{0x0A10, 3, 4},
+		{0x0A11, 1, 4},
+		{0x0A18, 1, 4},
+		{0x0A11, 2, 5},
+		{0x0A12, 2, 5},
+		{0x0A13, 1, 5},
+		{0x0A1C, 1, 5}
+	};
+	u32 ccbvid, id_ms;
+	u8 maj_rev, era;
+	u16 ip_id;
+	int i;
+
+	ccbvid = rd_reg32(&perfmon->ccb_id);
+	era = (ccbvid & CCBVID_ERA_MASK) >> CCBVID_ERA_SHIFT;
+	if (era)	/* This is '0' prior to CAAM ERA-6 */
+		return era;
+
+	id_ms = rd_reg32(&perfmon->caam_id_ms);
+	ip_id = (id_ms & SECVID_MS_IPID_MASK) >> SECVID_MS_IPID_SHIFT;
+	maj_rev = (id_ms & SECVID_MS_MAJ_REV_MASK) >> SECVID_MS_MAJ_REV_SHIFT;
+
+	for (i = 0; i < ARRAY_SIZE(id); i++)
+		if (id[i].ip_id == ip_id && id[i].maj_rev == maj_rev)
+			return id[i].era;
+
+	return -ENOTSUPP;
+}
+
+/**
+ * caam_get_era() - Return the ERA of the SEC on SoC, based
+ * on "sec-era" optional property in the DTS. This property is updated
+ * by u-boot.
+ * In case this property is not passed an attempt to retrieve the CAAM
+ * era via register reads will be made.
+ *
+ * @perfmon:	Performance Monitor Registers
+ */
+static int caam_get_era(struct caam_perfmon __iomem *perfmon)
+{
+	struct device_node *caam_node;
+	int ret;
+	u32 prop;
+
+	caam_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
+	ret = of_property_read_u32(caam_node, "fsl,sec-era", &prop);
+	of_node_put(caam_node);
+
+	if (!ret)
+		return prop;
+	else
+		return caam_get_era_from_hw(perfmon);
+}
+
+/*
+ * ERRATA: imx6 devices (imx6D, imx6Q, imx6DL, imx6S, imx6DP and imx6QP)
+ * have an issue wherein AXI bus transactions may not occur in the correct
+ * order. This isn't a problem running single descriptors, but can be if
+ * running multiple concurrent descriptors. Reworking the driver to throttle
+ * to single requests is impractical, thus the workaround is to limit the AXI
+ * pipeline to a depth of 1 (from it's default of 4) to preclude this situation
+ * from occurring.
+ */
+static void handle_imx6_err005766(u32 __iomem *mcr)
+{
+	if (of_machine_is_compatible("fsl,imx6q") ||
+	    of_machine_is_compatible("fsl,imx6dl") ||
+	    of_machine_is_compatible("fsl,imx6qp"))
+		clrsetbits_32(mcr, MCFGR_AXIPIPE_MASK,
+			      1 << MCFGR_AXIPIPE_SHIFT);
+}
+
+static const struct of_device_id caam_match[] = {
+	{
+		.compatible = "fsl,sec-v4.0",
+	},
+	{
+		.compatible = "fsl,sec4.0",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, caam_match);
+
+struct caam_imx_data {
+	bool page0_access;
+	const struct clk_bulk_data *clks;
+	int num_clks;
+};
+
+static const struct clk_bulk_data caam_imx6_clks[] = {
+	{ .id = "ipg" },
+	{ .id = "mem" },
+	{ .id = "aclk" },
+	{ .id = "emi_slow" },
+};
+
+static const struct caam_imx_data caam_imx6_data = {
+	.page0_access = true,
+	.clks = caam_imx6_clks,
+	.num_clks = ARRAY_SIZE(caam_imx6_clks),
+};
+
+static const struct clk_bulk_data caam_imx7_clks[] = {
+	{ .id = "ipg" },
+	{ .id = "aclk" },
+};
+
+static const struct caam_imx_data caam_imx7_data = {
+	.page0_access = true,
+	.clks = caam_imx7_clks,
+	.num_clks = ARRAY_SIZE(caam_imx7_clks),
+};
+
+static const struct clk_bulk_data caam_imx6ul_clks[] = {
+	{ .id = "ipg" },
+	{ .id = "mem" },
+	{ .id = "aclk" },
+};
+
+static const struct caam_imx_data caam_imx6ul_data = {
+	.page0_access = true,
+	.clks = caam_imx6ul_clks,
+	.num_clks = ARRAY_SIZE(caam_imx6ul_clks),
+};
+
+static const struct clk_bulk_data caam_vf610_clks[] = {
+	{ .id = "ipg" },
+};
+
+static const struct caam_imx_data caam_vf610_data = {
+	.page0_access = true,
+	.clks = caam_vf610_clks,
+	.num_clks = ARRAY_SIZE(caam_vf610_clks),
+};
+
+static const struct caam_imx_data caam_imx8ulp_data;
+
+static const struct soc_device_attribute caam_imx_soc_table[] = {
+	{ .soc_id = "i.MX6UL", .data = &caam_imx6ul_data },
+	{ .soc_id = "i.MX6*",  .data = &caam_imx6_data },
+	{ .soc_id = "i.MX7*",  .data = &caam_imx7_data },
+	{ .soc_id = "i.MX8M*", .data = &caam_imx7_data },
+	{ .soc_id = "i.MX8ULP", .data = &caam_imx8ulp_data },
+	{ .soc_id = "i.MX8Q*", .data = &caam_imx8ulp_data },
+	{ .soc_id = "VF*",     .data = &caam_vf610_data },
+	{ .family = "Freescale i.MX" },
+	{ /* sentinel */ }
+};
+
+static void disable_clocks(void *data)
+{
+	struct caam_drv_private *ctrlpriv = data;
+
+	clk_bulk_disable_unprepare(ctrlpriv->num_clks, ctrlpriv->clks);
+}
+
+static int init_clocks(struct device *dev, const struct caam_imx_data *data)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	int ret;
+
+	ctrlpriv->num_clks = data->num_clks;
+	ctrlpriv->clks = devm_kmemdup_array(dev, data->clks,
+					    data->num_clks, sizeof(*data->clks),
+					    GFP_KERNEL);
+	if (!ctrlpriv->clks)
+		return -ENOMEM;
+
+	ret = devm_clk_bulk_get(dev, ctrlpriv->num_clks, ctrlpriv->clks);
+	if (ret) {
+		dev_err(dev,
+			"Failed to request all necessary clocks\n");
+		return ret;
+	}
+
+	ret = clk_bulk_prepare_enable(ctrlpriv->num_clks, ctrlpriv->clks);
+	if (ret) {
+		dev_err(dev,
+			"Failed to prepare/enable all necessary clocks\n");
+		return ret;
+	}
+
+	return devm_add_action_or_reset(dev, disable_clocks, ctrlpriv);
+}
+
+static void caam_remove_debugfs(void *root)
+{
+	debugfs_remove_recursive(root);
+}
+
+#ifdef CONFIG_FSL_MC_BUS
+static bool check_version(struct fsl_mc_version *mc_version, u32 major,
+			  u32 minor, u32 revision)
+{
+	if (mc_version->major > major)
+		return true;
+
+	if (mc_version->major == major) {
+		if (mc_version->minor > minor)
+			return true;
+
+		if (mc_version->minor == minor &&
+		    mc_version->revision > revision)
+			return true;
+	}
+
+	return false;
+}
+#endif
+
+static bool needs_entropy_delay_adjustment(void)
+{
+	if (of_machine_is_compatible("fsl,imx6sx"))
+		return true;
+	return false;
+}
+
+static int caam_ctrl_rng_init(struct device *dev)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl;
+	int ret, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN;
+	u8 rng_vid;
+
+	if (ctrlpriv->era < 10) {
+		struct caam_perfmon __iomem *perfmon;
+
+		perfmon = ctrlpriv->total_jobrs ?
+			  (struct caam_perfmon __iomem *)&ctrlpriv->jr[0]->perfmon :
+			  (struct caam_perfmon __iomem *)&ctrl->perfmon;
+
+		rng_vid = (rd_reg32(&perfmon->cha_id_ls) &
+			   CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT;
+	} else {
+		struct version_regs __iomem *vreg;
+
+		vreg = ctrlpriv->total_jobrs ?
+			(struct version_regs __iomem *)&ctrlpriv->jr[0]->vreg :
+			(struct version_regs __iomem *)&ctrl->vreg;
+
+		rng_vid = (rd_reg32(&vreg->rng) & CHA_VER_VID_MASK) >>
+			  CHA_VER_VID_SHIFT;
+	}
+
+	/*
+	 * If SEC has RNG version >= 4 and RNG state handle has not been
+	 * already instantiated, do RNG instantiation
+	 * In case of SoCs with Management Complex, RNG is managed by MC f/w.
+	 */
+	if (!(ctrlpriv->mc_en && ctrlpriv->pr_support) && rng_vid >= 4) {
+		ctrlpriv->rng4_sh_init =
+			rd_reg32(&ctrl->r4tst[0].rdsta);
+		/*
+		 * If the secure keys (TDKEK, JDKEK, TDSK), were already
+		 * generated, signal this to the function that is instantiating
+		 * the state handles. An error would occur if RNG4 attempts
+		 * to regenerate these keys before the next POR.
+		 */
+		gen_sk = ctrlpriv->rng4_sh_init & RDSTA_SKVN ? 0 : 1;
+		ctrlpriv->rng4_sh_init &= RDSTA_MASK;
+		do {
+			int inst_handles =
+				rd_reg32(&ctrl->r4tst[0].rdsta) & RDSTA_MASK;
+			/*
+			 * If either SH were instantiated by somebody else
+			 * (e.g. u-boot) then it is assumed that the entropy
+			 * parameters are properly set and thus the function
+			 * setting these (kick_trng(...)) is skipped.
+			 * Also, if a handle was instantiated, do not change
+			 * the TRNG parameters.
+			 */
+			if (needs_entropy_delay_adjustment())
+				ent_delay = 12000;
+			if (!inst_handles) {
+				dev_info(dev,
+					 "Entropy delay = %u\n",
+					 ent_delay);
+				kick_trng(dev, ent_delay);
+				ent_delay = ent_delay * 2;
+			}
+			/*
+			 * if instantiate_rng(...) fails, the loop will rerun
+			 * and the kick_trng(...) function will modify the
+			 * upper and lower limits of the entropy sampling
+			 * interval, leading to a successful initialization of
+			 * the RNG.
+			 */
+			ret = instantiate_rng(dev, inst_handles,
+					      gen_sk);
+			/*
+			 * Entropy delay is determined via TRNG characterization.
+			 * TRNG characterization is run across different voltages
+			 * and temperatures.
+			 * If worst case value for ent_dly is identified,
+			 * the loop can be skipped for that platform.
+			 */
+			if (needs_entropy_delay_adjustment())
+				break;
+			if (ret == -EAGAIN)
+				/*
+				 * if here, the loop will rerun,
+				 * so don't hog the CPU
+				 */
+				cpu_relax();
+		} while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX));
+		if (ret) {
+			dev_err(dev, "failed to instantiate RNG");
+			return ret;
+		}
+		/*
+		 * Set handles initialized by this module as the complement of
+		 * the already initialized ones
+		 */
+		ctrlpriv->rng4_sh_init = ~ctrlpriv->rng4_sh_init & RDSTA_MASK;
+
+		/* Enable RDB bit so that RNG works faster */
+		clrsetbits_32(&ctrl->scfgr, 0, SCFGR_RDBENABLE);
+	}
+
+	return 0;
+}
+
+/* Indicate if the internal state of the CAAM is lost during PM */
+static int caam_off_during_pm(void)
+{
+	bool not_off_during_pm = of_machine_is_compatible("fsl,imx6q") ||
+				 of_machine_is_compatible("fsl,imx6qp") ||
+				 of_machine_is_compatible("fsl,imx6dl");
+
+	return not_off_during_pm ? 0 : 1;
+}
+
+static void caam_state_save(struct device *dev)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	struct caam_ctl_state *state = &ctrlpriv->state;
+	struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl;
+	u32 deco_inst, jr_inst;
+	int i;
+
+	state->mcr = rd_reg32(&ctrl->mcr);
+	state->scfgr = rd_reg32(&ctrl->scfgr);
+
+	deco_inst = (rd_reg32(&ctrl->perfmon.cha_num_ms) &
+		     CHA_ID_MS_DECO_MASK) >> CHA_ID_MS_DECO_SHIFT;
+	for (i = 0; i < deco_inst; i++) {
+		state->deco_mid[i].liodn_ms =
+			rd_reg32(&ctrl->deco_mid[i].liodn_ms);
+		state->deco_mid[i].liodn_ls =
+			rd_reg32(&ctrl->deco_mid[i].liodn_ls);
+	}
+
+	jr_inst = (rd_reg32(&ctrl->perfmon.cha_num_ms) &
+		   CHA_ID_MS_JR_MASK) >> CHA_ID_MS_JR_SHIFT;
+	for (i = 0; i < jr_inst; i++) {
+		state->jr_mid[i].liodn_ms =
+			rd_reg32(&ctrl->jr_mid[i].liodn_ms);
+		state->jr_mid[i].liodn_ls =
+			rd_reg32(&ctrl->jr_mid[i].liodn_ls);
+	}
+}
+
+static void caam_state_restore(const struct device *dev)
+{
+	const struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	const struct caam_ctl_state *state = &ctrlpriv->state;
+	struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl;
+	u32 deco_inst, jr_inst;
+	int i;
+
+	wr_reg32(&ctrl->mcr, state->mcr);
+	wr_reg32(&ctrl->scfgr, state->scfgr);
+
+	deco_inst = (rd_reg32(&ctrl->perfmon.cha_num_ms) &
+		     CHA_ID_MS_DECO_MASK) >> CHA_ID_MS_DECO_SHIFT;
+	for (i = 0; i < deco_inst; i++) {
+		wr_reg32(&ctrl->deco_mid[i].liodn_ms,
+			 state->deco_mid[i].liodn_ms);
+		wr_reg32(&ctrl->deco_mid[i].liodn_ls,
+			 state->deco_mid[i].liodn_ls);
+	}
+
+	jr_inst = (rd_reg32(&ctrl->perfmon.cha_num_ms) &
+		   CHA_ID_MS_JR_MASK) >> CHA_ID_MS_JR_SHIFT;
+	for (i = 0; i < jr_inst; i++) {
+		wr_reg32(&ctrl->jr_mid[i].liodn_ms,
+			 state->jr_mid[i].liodn_ms);
+		wr_reg32(&ctrl->jr_mid[i].liodn_ls,
+			 state->jr_mid[i].liodn_ls);
+	}
+
+	if (ctrlpriv->virt_en == 1)
+		clrsetbits_32(&ctrl->jrstart, 0, JRSTART_JR0_START |
+			      JRSTART_JR1_START | JRSTART_JR2_START |
+			      JRSTART_JR3_START);
+}
+
+static int caam_ctrl_suspend(struct device *dev)
+{
+	const struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+
+	if (ctrlpriv->caam_off_during_pm && !ctrlpriv->no_page0)
+		caam_state_save(dev);
+
+	return 0;
+}
+
+static int caam_ctrl_resume(struct device *dev)
+{
+	struct caam_drv_private *ctrlpriv = dev_get_drvdata(dev);
+	int ret = 0;
+
+	if (ctrlpriv->caam_off_during_pm && !ctrlpriv->no_page0) {
+		caam_state_restore(dev);
+
+		/* HW and rng will be reset so deinstantiation can be removed */
+		devm_remove_action(dev, devm_deinstantiate_rng, dev);
+		ret = caam_ctrl_rng_init(dev);
+	}
+
+	return ret;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(caam_ctrl_pm_ops, caam_ctrl_suspend, caam_ctrl_resume);
+
+/* Probe routine for CAAM top (controller) level */
+static int caam_probe(struct platform_device *pdev)
+{
+	int ret, ring;
+	u64 caam_id;
+	const struct soc_device_attribute *imx_soc_match;
+	struct device *dev;
+	struct device_node *nprop, *np;
+	struct caam_ctrl __iomem *ctrl;
+	struct caam_drv_private *ctrlpriv;
+	struct caam_perfmon __iomem *perfmon;
+	struct dentry *dfs_root;
+	u32 scfgr, comp_params;
+	int pg_size;
+	int BLOCK_OFFSET = 0;
+	bool reg_access = true;
+	const struct caam_imx_data *imx_soc_data;
+
+	ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(*ctrlpriv), GFP_KERNEL);
+	if (!ctrlpriv)
+		return -ENOMEM;
+
+	dev = &pdev->dev;
+	dev_set_drvdata(dev, ctrlpriv);
+	nprop = pdev->dev.of_node;
+
+	imx_soc_match = soc_device_match(caam_imx_soc_table);
+	if (!imx_soc_match && of_match_node(imx8m_machine_match, of_root))
+		return -EPROBE_DEFER;
+
+	caam_imx = (bool)imx_soc_match;
+
+	ctrlpriv->caam_off_during_pm = caam_imx && caam_off_during_pm();
+
+	if (imx_soc_match) {
+		/*
+		 * Until Layerscape and i.MX OP-TEE get in sync,
+		 * only i.MX OP-TEE use cases disallow access to
+		 * caam page 0 (controller) registers.
+		 */
+		np = of_find_compatible_node(NULL, NULL, "linaro,optee-tz");
+		ctrlpriv->optee_en = !!np;
+		of_node_put(np);
+
+		reg_access = !ctrlpriv->optee_en;
+
+		if (!imx_soc_match->data) {
+			dev_err(dev, "No clock data provided for i.MX SoC");
+			return -EINVAL;
+		}
+
+		imx_soc_data = imx_soc_match->data;
+		reg_access = reg_access && imx_soc_data->page0_access;
+		ctrlpriv->no_page0 = !reg_access;
+		/*
+		 * CAAM clocks cannot be controlled from kernel.
+		 */
+		if (!imx_soc_data->num_clks)
+			goto iomap_ctrl;
+
+		ret = init_clocks(dev, imx_soc_match->data);
+		if (ret)
+			return ret;
+	}
+
+iomap_ctrl:
+	/* Get configuration properties from device tree */
+	/* First, get register page */
+	ctrl = devm_of_iomap(dev, nprop, 0, NULL);
+	ret = PTR_ERR_OR_ZERO(ctrl);
+	if (ret) {
+		dev_err(dev, "caam: of_iomap() failed\n");
+		return ret;
+	}
+
+	ring = 0;
+	for_each_available_child_of_node(nprop, np)
+		if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
+		    of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
+			u32 reg;
+
+			if (of_property_read_u32_index(np, "reg", 0, &reg)) {
+				dev_err(dev, "%s read reg property error\n",
+					np->full_name);
+				continue;
+			}
+
+			ctrlpriv->jr[ring] = (struct caam_job_ring __iomem __force *)
+					     ((__force uint8_t *)ctrl + reg);
+
+			ctrlpriv->total_jobrs++;
+			ring++;
+		}
+
+	/*
+	 * Wherever possible, instead of accessing registers from the global page,
+	 * use the alias registers in the first (cf. DT nodes order)
+	 * job ring's page.
+	 */
+	perfmon = ring ? (struct caam_perfmon __iomem *)&ctrlpriv->jr[0]->perfmon :
+			 (struct caam_perfmon __iomem *)&ctrl->perfmon;
+
+	caam_little_end = !(bool)(rd_reg32(&perfmon->status) &
+				  (CSTA_PLEND | CSTA_ALT_PLEND));
+	comp_params = rd_reg32(&perfmon->comp_parms_ms);
+	if (reg_access && comp_params & CTPR_MS_PS &&
+	    rd_reg32(&ctrl->mcr) & MCFGR_LONG_PTR)
+		caam_ptr_sz = sizeof(u64);
+	else
+		caam_ptr_sz = sizeof(u32);
+	caam_dpaa2 = !!(comp_params & CTPR_MS_DPAA2);
+	ctrlpriv->qi_present = !!(comp_params & CTPR_MS_QI_MASK);
+
+#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI
+	/* If (DPAA 1.x) QI present, check whether dependencies are available */
+	if (ctrlpriv->qi_present && !caam_dpaa2) {
+		ret = qman_is_probed();
+		if (!ret) {
+			return -EPROBE_DEFER;
+		} else if (ret < 0) {
+			dev_err(dev, "failing probe due to qman probe error\n");
+			return -ENODEV;
+		}
+
+		ret = qman_portals_probed();
+		if (!ret) {
+			return -EPROBE_DEFER;
+		} else if (ret < 0) {
+			dev_err(dev, "failing probe due to qman portals probe error\n");
+			return -ENODEV;
+		}
+	}
+#endif
+
+	/* Allocating the BLOCK_OFFSET based on the supported page size on
+	 * the platform
+	 */
+	pg_size = (comp_params & CTPR_MS_PG_SZ_MASK) >> CTPR_MS_PG_SZ_SHIFT;
+	if (pg_size == 0)
+		BLOCK_OFFSET = PG_SIZE_4K;
+	else
+		BLOCK_OFFSET = PG_SIZE_64K;
+
+	ctrlpriv->ctrl = (struct caam_ctrl __iomem __force *)ctrl;
+	ctrlpriv->assure = (struct caam_assurance __iomem __force *)
+			   ((__force uint8_t *)ctrl +
+			    BLOCK_OFFSET * ASSURE_BLOCK_NUMBER
+			   );
+	ctrlpriv->deco = (struct caam_deco __iomem __force *)
+			 ((__force uint8_t *)ctrl +
+			 BLOCK_OFFSET * DECO_BLOCK_NUMBER
+			 );
+
+	/* Get the IRQ of the controller (for security violations only) */
+	ctrlpriv->secvio_irq = irq_of_parse_and_map(nprop, 0);
+	np = of_find_compatible_node(NULL, NULL, "fsl,qoriq-mc");
+	ctrlpriv->mc_en = !!np;
+	of_node_put(np);
+
+#ifdef CONFIG_FSL_MC_BUS
+	if (ctrlpriv->mc_en) {
+		struct fsl_mc_version *mc_version;
+
+		mc_version = fsl_mc_get_version();
+		if (mc_version)
+			ctrlpriv->pr_support = check_version(mc_version, 10, 20,
+							     0);
+		else
+			return -EPROBE_DEFER;
+	}
+#endif
+
+	if (!reg_access)
+		goto set_dma_mask;
+
+	/*
+	 * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel,
+	 * long pointers in master configuration register.
+	 * In case of SoCs with Management Complex, MC f/w performs
+	 * the configuration.
+	 */
+	if (!ctrlpriv->mc_en)
+		clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK,
+			      MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF |
+			      MCFGR_WDENABLE | MCFGR_LARGE_BURST);
+
+	handle_imx6_err005766(&ctrl->mcr);
+
+	/*
+	 *  Read the Compile Time parameters and SCFGR to determine
+	 * if virtualization is enabled for this platform
+	 */
+	scfgr = rd_reg32(&ctrl->scfgr);
+
+	ctrlpriv->virt_en = 0;
+	if (comp_params & CTPR_MS_VIRT_EN_INCL) {
+		/* VIRT_EN_INCL = 1 & VIRT_EN_POR = 1 or
+		 * VIRT_EN_INCL = 1 & VIRT_EN_POR = 0 & SCFGR_VIRT_EN = 1
+		 */
+		if ((comp_params & CTPR_MS_VIRT_EN_POR) ||
+		    (!(comp_params & CTPR_MS_VIRT_EN_POR) &&
+		       (scfgr & SCFGR_VIRT_EN)))
+				ctrlpriv->virt_en = 1;
+	} else {
+		/* VIRT_EN_INCL = 0 && VIRT_EN_POR_VALUE = 1 */
+		if (comp_params & CTPR_MS_VIRT_EN_POR)
+				ctrlpriv->virt_en = 1;
+	}
+
+	if (ctrlpriv->virt_en == 1)
+		clrsetbits_32(&ctrl->jrstart, 0, JRSTART_JR0_START |
+			      JRSTART_JR1_START | JRSTART_JR2_START |
+			      JRSTART_JR3_START);
+
+set_dma_mask:
+	ret = dma_set_mask_and_coherent(dev, caam_get_dma_mask(dev));
+	if (ret) {
+		dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret);
+		return ret;
+	}
+
+	ctrlpriv->era = caam_get_era(perfmon);
+	ctrlpriv->domain = iommu_get_domain_for_dev(dev);
+
+	dfs_root = debugfs_create_dir(dev_name(dev), NULL);
+	if (IS_ENABLED(CONFIG_DEBUG_FS)) {
+		ret = devm_add_action_or_reset(dev, caam_remove_debugfs,
+					       dfs_root);
+		if (ret)
+			return ret;
+	}
+
+	caam_debugfs_init(ctrlpriv, perfmon, dfs_root);
+
+	/* Check to see if (DPAA 1.x) QI present. If so, enable */
+	if (ctrlpriv->qi_present && !caam_dpaa2) {
+		ctrlpriv->qi = (struct caam_queue_if __iomem __force *)
+			       ((__force uint8_t *)ctrl +
+				 BLOCK_OFFSET * QI_BLOCK_NUMBER
+			       );
+		/* This is all that's required to physically enable QI */
+		wr_reg32(&ctrlpriv->qi->qi_control_lo, QICTL_DQEN);
+
+		/* If QMAN driver is present, init CAAM-QI backend */
+#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI
+		ret = caam_qi_init(pdev);
+		if (ret)
+			dev_err(dev, "caam qi i/f init failed: %d\n", ret);
+#endif
+	}
+
+	/* If no QI and no rings specified, quit and go home */
+	if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
+		dev_err(dev, "no queues configured, terminating\n");
+		return -ENOMEM;
+	}
+
+	comp_params = rd_reg32(&perfmon->comp_parms_ls);
+	ctrlpriv->blob_present = !!(comp_params & CTPR_LS_BLOB);
+
+	/*
+	 * Some SoCs like the LS1028A (non-E) indicate CTPR_LS_BLOB support,
+	 * but fail when actually using it due to missing AES support, so
+	 * check both here.
+	 */
+	if (ctrlpriv->era < 10) {
+		ctrlpriv->blob_present = ctrlpriv->blob_present &&
+			(rd_reg32(&perfmon->cha_num_ls) & CHA_ID_LS_AES_MASK);
+	} else {
+		struct version_regs __iomem *vreg;
+
+		vreg =  ctrlpriv->total_jobrs ?
+			(struct version_regs __iomem *)&ctrlpriv->jr[0]->vreg :
+			(struct version_regs __iomem *)&ctrl->vreg;
+
+		ctrlpriv->blob_present = ctrlpriv->blob_present &&
+			(rd_reg32(&vreg->aesa) & CHA_VER_MISC_AES_NUM_MASK);
+	}
+
+	if (reg_access) {
+		ret = caam_ctrl_rng_init(dev);
+		if (ret)
+			return ret;
+	}
+
+	caam_id = (u64)rd_reg32(&perfmon->caam_id_ms) << 32 |
+		  (u64)rd_reg32(&perfmon->caam_id_ls);
+
+	/* Report "alive" for developer to see */
+	dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id,
+		 ctrlpriv->era);
+	dev_info(dev, "job rings = %d, qi = %d\n",
+		 ctrlpriv->total_jobrs, ctrlpriv->qi_present);
+
+	ret = devm_of_platform_populate(dev);
+	if (ret)
+		dev_err(dev, "JR platform devices creation error\n");
+
+	return ret;
+}
+
+static struct platform_driver caam_driver = {
+	.driver = {
+		.name = "caam",
+		.of_match_table = caam_match,
+		.pm = pm_ptr(&caam_ctrl_pm_ops),
+	},
+	.probe       = caam_probe,
+};
+
+module_platform_driver(caam_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("FSL CAAM request backend");
+MODULE_AUTHOR("Freescale Semiconductor - NMG/STC");