Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 167 insertions, 0 deletions

diff --git a/drivers/net/ipa/ipa_reg.c b/drivers/net/ipa/ipa_reg.c
new file mode 100644
index 000000000..818a84f7c
--- /dev/null
+++ b/drivers/net/ipa/ipa_reg.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2019-2023 Linaro Ltd.
+ */
+
+#include <linux/io.h>
+
+#include "ipa.h"
+#include "ipa_reg.h"
+
+/* Is this register ID valid for the current IPA version? */
+static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
+{
+	enum ipa_version version = ipa->version;
+
+	switch (reg_id) {
+	case FILT_ROUT_HASH_EN:
+		return version == IPA_VERSION_4_2;
+
+	case FILT_ROUT_HASH_FLUSH:
+		return version < IPA_VERSION_5_0 && version != IPA_VERSION_4_2;
+
+	case FILT_ROUT_CACHE_FLUSH:
+	case ENDP_FILTER_CACHE_CFG:
+	case ENDP_ROUTER_CACHE_CFG:
+		return version >= IPA_VERSION_5_0;
+
+	case IPA_BCR:
+	case COUNTER_CFG:
+		return version < IPA_VERSION_4_5;
+
+	case IPA_TX_CFG:
+	case FLAVOR_0:
+	case IDLE_INDICATION_CFG:
+		return version >= IPA_VERSION_3_5;
+
+	case QTIME_TIMESTAMP_CFG:
+	case TIMERS_XO_CLK_DIV_CFG:
+	case TIMERS_PULSE_GRAN_CFG:
+		return version >= IPA_VERSION_4_5;
+
+	case SRC_RSRC_GRP_45_RSRC_TYPE:
+	case DST_RSRC_GRP_45_RSRC_TYPE:
+		return version <= IPA_VERSION_3_1 ||
+		       version == IPA_VERSION_4_5 ||
+		       version == IPA_VERSION_5_0;
+
+	case SRC_RSRC_GRP_67_RSRC_TYPE:
+	case DST_RSRC_GRP_67_RSRC_TYPE:
+		return version <= IPA_VERSION_3_1 ||
+		       version == IPA_VERSION_5_0;
+
+	case ENDP_FILTER_ROUTER_HSH_CFG:
+		return version < IPA_VERSION_5_0 &&
+			version != IPA_VERSION_4_2;
+
+	case IRQ_SUSPEND_EN:
+	case IRQ_SUSPEND_CLR:
+		return version >= IPA_VERSION_3_1;
+
+	case COMP_CFG:
+	case CLKON_CFG:
+	case ROUTE:
+	case SHARED_MEM_SIZE:
+	case QSB_MAX_WRITES:
+	case QSB_MAX_READS:
+	case STATE_AGGR_ACTIVE:
+	case LOCAL_PKT_PROC_CNTXT:
+	case AGGR_FORCE_CLOSE:
+	case SRC_RSRC_GRP_01_RSRC_TYPE:
+	case SRC_RSRC_GRP_23_RSRC_TYPE:
+	case DST_RSRC_GRP_01_RSRC_TYPE:
+	case DST_RSRC_GRP_23_RSRC_TYPE:
+	case ENDP_INIT_CTRL:
+	case ENDP_INIT_CFG:
+	case ENDP_INIT_NAT:
+	case ENDP_INIT_HDR:
+	case ENDP_INIT_HDR_EXT:
+	case ENDP_INIT_HDR_METADATA_MASK:
+	case ENDP_INIT_MODE:
+	case ENDP_INIT_AGGR:
+	case ENDP_INIT_HOL_BLOCK_EN:
+	case ENDP_INIT_HOL_BLOCK_TIMER:
+	case ENDP_INIT_DEAGGR:
+	case ENDP_INIT_RSRC_GRP:
+	case ENDP_INIT_SEQ:
+	case ENDP_STATUS:
+	case IPA_IRQ_STTS:
+	case IPA_IRQ_EN:
+	case IPA_IRQ_CLR:
+	case IPA_IRQ_UC:
+	case IRQ_SUSPEND_INFO:
+		return true;	/* These should be defined for all versions */
+
+	default:
+		return false;
+	}
+}
+
+const struct reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id)
+{
+	if (WARN(!ipa_reg_id_valid(ipa, reg_id), "invalid reg %u\n", reg_id))
+		return NULL;
+
+	return reg(ipa->regs, reg_id);
+}
+
+static const struct regs *ipa_regs(enum ipa_version version)
+{
+	switch (version) {
+	case IPA_VERSION_3_1:
+		return &ipa_regs_v3_1;
+	case IPA_VERSION_3_5_1:
+		return &ipa_regs_v3_5_1;
+	case IPA_VERSION_4_2:
+		return &ipa_regs_v4_2;
+	case IPA_VERSION_4_5:
+		return &ipa_regs_v4_5;
+	case IPA_VERSION_4_7:
+		return &ipa_regs_v4_7;
+	case IPA_VERSION_4_9:
+		return &ipa_regs_v4_9;
+	case IPA_VERSION_4_11:
+		return &ipa_regs_v4_11;
+	case IPA_VERSION_5_0:
+		return &ipa_regs_v5_0;
+	default:
+		return NULL;
+	}
+}
+
+int ipa_reg_init(struct ipa *ipa)
+{
+	struct device *dev = &ipa->pdev->dev;
+	const struct regs *regs;
+	struct resource *res;
+
+	regs = ipa_regs(ipa->version);
+	if (!regs)
+		return -EINVAL;
+
+	if (WARN_ON(regs->reg_count > IPA_REG_ID_COUNT))
+		return -EINVAL;
+
+	/* Setup IPA register memory  */
+	res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
+					   "ipa-reg");
+	if (!res) {
+		dev_err(dev, "DT error getting \"ipa-reg\" memory property\n");
+		return -ENODEV;
+	}
+
+	ipa->reg_virt = ioremap(res->start, resource_size(res));
+	if (!ipa->reg_virt) {
+		dev_err(dev, "unable to remap \"ipa-reg\" memory\n");
+		return -ENOMEM;
+	}
+	ipa->regs = regs;
+
+	return 0;
+}
+
+void ipa_reg_exit(struct ipa *ipa)
+{
+	iounmap(ipa->reg_virt);
+}