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path: root/drivers/net/ipa/ipa_reg.c
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Diffstat (limited to 'drivers/net/ipa/ipa_reg.c')
-rw-r--r--drivers/net/ipa/ipa_reg.c167
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 0000000000..818a84f7c4
--- /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);
+}