Enable QoS for the master ports with predefined values
for priority and urgency.
Change-Id: I1c4515402bcd6df8eed814be096aa5e1fc16cef6
Signed-off-by: Odelu Kukatla <[email protected]>
---
drivers/interconnect/qcom/sc7280.c | 250 +++++++++++++++++++++++++++++
1 file changed, 250 insertions(+)
diff --git a/drivers/interconnect/qcom/sc7280.c b/drivers/interconnect/qcom/sc7280.c
index 7d33694368e8..719844c34894 100644
--- a/drivers/interconnect/qcom/sc7280.c
+++ b/drivers/interconnect/qcom/sc7280.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
*
*/
@@ -16,29 +17,59 @@
#include "icc-rpmh.h"
#include "sc7280.h"
+static const struct regmap_config icc_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+};
+
+static struct qcom_icc_qosbox qhm_qspi_qos = {
+ .num_ports = 1,
+ .offsets = { 0x7000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qhm_qspi = {
.name = "qhm_qspi",
.id = SC7280_MASTER_QSPI_0,
.channels = 1,
.buswidth = 4,
+ .qosbox = &qhm_qspi_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox qhm_qup0_qos = {
+ .num_ports = 1,
+ .offsets = { 0x11000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qhm_qup0 = {
.name = "qhm_qup0",
.id = SC7280_MASTER_QUP_0,
.channels = 1,
.buswidth = 4,
+ .qosbox = &qhm_qup0_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox qhm_qup1_qos = {
+ .num_ports = 1,
+ .offsets = { 0x8000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qhm_qup1 = {
.name = "qhm_qup1",
.id = SC7280_MASTER_QUP_1,
.channels = 1,
.buswidth = 4,
+ .qosbox = &qhm_qup1_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
@@ -52,38 +83,70 @@ static struct qcom_icc_node qnm_a1noc_cfg = {
.links = { SC7280_SLAVE_SERVICE_A1NOC },
};
+static struct qcom_icc_qosbox xm_sdc1_qos = {
+ .num_ports = 1,
+ .offsets = { 0xc000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_sdc1 = {
.name = "xm_sdc1",
.id = SC7280_MASTER_SDCC_1,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_sdc1_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox xm_sdc2_qos = {
+ .num_ports = 1,
+ .offsets = { 0xe000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_sdc2 = {
.name = "xm_sdc2",
.id = SC7280_MASTER_SDCC_2,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_sdc2_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox xm_sdc4_qos = {
+ .num_ports = 1,
+ .offsets = { 0x9000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_sdc4 = {
.name = "xm_sdc4",
.id = SC7280_MASTER_SDCC_4,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_sdc4_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox xm_ufs_mem_qos = {
+ .num_ports = 1,
+ .offsets = { 0xa000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_ufs_mem = {
.name = "xm_ufs_mem",
.id = SC7280_MASTER_UFS_MEM,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_ufs_mem_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
@@ -97,20 +160,36 @@ static struct qcom_icc_node xm_usb2 = {
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox xm_usb3_0_qos = {
+ .num_ports = 1,
+ .offsets = { 0xb000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_usb3_0 = {
.name = "xm_usb3_0",
.id = SC7280_MASTER_USB3_0,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_usb3_0_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A1NOC_SNOC },
};
+static struct qcom_icc_qosbox qhm_qdss_bam_qos = {
+ .num_ports = 1,
+ .offsets = { 0x18000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qhm_qdss_bam = {
.name = "qhm_qdss_bam",
.id = SC7280_MASTER_QDSS_BAM,
.channels = 1,
.buswidth = 4,
+ .qosbox = &qhm_qdss_bam_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A2NOC_SNOC },
};
@@ -124,29 +203,53 @@ static struct qcom_icc_node qnm_a2noc_cfg = {
.links = { SC7280_SLAVE_SERVICE_A2NOC },
};
+static struct qcom_icc_qosbox qnm_cnoc_datapath_qos = {
+ .num_ports = 1,
+ .offsets = { 0x1c000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qnm_cnoc_datapath = {
.name = "qnm_cnoc_datapath",
.id = SC7280_MASTER_CNOC_A2NOC,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qnm_cnoc_datapath_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A2NOC_SNOC },
};
+static struct qcom_icc_qosbox qxm_crypto_qos = {
+ .num_ports = 1,
+ .offsets = { 0x1d000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qxm_crypto = {
.name = "qxm_crypto",
.id = SC7280_MASTER_CRYPTO,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qxm_crypto_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A2NOC_SNOC },
};
+static struct qcom_icc_qosbox qxm_ipa_qos = {
+ .num_ports = 1,
+ .offsets = { 0x10000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qxm_ipa = {
.name = "qxm_ipa",
.id = SC7280_MASTER_IPA,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qxm_ipa_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A2NOC_SNOC },
};
@@ -168,11 +271,19 @@ static struct qcom_icc_node xm_pcie3_1 = {
.links = { SC7280_SLAVE_ANOC_PCIE_GEM_NOC },
};
+static struct qcom_icc_qosbox xm_qdss_etr_qos = {
+ .num_ports = 1,
+ .offsets = { 0x15000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_qdss_etr = {
.name = "xm_qdss_etr",
.id = SC7280_MASTER_QDSS_ETR,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_qdss_etr_qos,
.num_links = 1,
.links = { SC7280_SLAVE_A2NOC_SNOC },
};
@@ -300,20 +411,36 @@ static struct qcom_icc_node qnm_cnoc_dc_noc = {
.links = { SC7280_SLAVE_LLCC_CFG, SC7280_SLAVE_GEM_NOC_CFG },
};
+static struct qcom_icc_qosbox alm_gpu_tcu_qos = {
+ .num_ports = 1,
+ .offsets = { 0xd7000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node alm_gpu_tcu = {
.name = "alm_gpu_tcu",
.id = SC7280_MASTER_GPU_TCU,
.channels = 1,
.buswidth = 8,
+ .qosbox = &alm_gpu_tcu_qos,
.num_links = 2,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
+static struct qcom_icc_qosbox alm_sys_tcu_qos = {
+ .num_ports = 1,
+ .offsets = { 0xd6000 },
+ .prio = 6,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node alm_sys_tcu = {
.name = "alm_sys_tcu",
.id = SC7280_MASTER_SYS_TCU,
.channels = 1,
.buswidth = 8,
+ .qosbox = &alm_sys_tcu_qos,
.num_links = 2,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
@@ -328,11 +455,19 @@ static struct qcom_icc_node chm_apps = {
SC7280_SLAVE_MEM_NOC_PCIE_SNOC },
};
+static struct qcom_icc_qosbox qnm_cmpnoc_qos = {
+ .num_ports = 2,
+ .offsets = { 0x21000, 0x61000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_cmpnoc = {
.name = "qnm_cmpnoc",
.id = SC7280_MASTER_COMPUTE_NOC,
.channels = 2,
.buswidth = 32,
+ .qosbox = &qnm_cmpnoc_qos,
.num_links = 2,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
@@ -348,29 +483,53 @@ static struct qcom_icc_node qnm_gemnoc_cfg = {
SC7280_SLAVE_SERVICE_GEM_NOC },
};
+static struct qcom_icc_qosbox qnm_gpu_qos = {
+ .num_ports = 2,
+ .offsets = { 0x22000, 0x62000 },
+ .prio = 0,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qnm_gpu = {
.name = "qnm_gpu",
.id = SC7280_MASTER_GFX3D,
.channels = 2,
.buswidth = 32,
+ .qosbox = &qnm_gpu_qos,
.num_links = 2,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
+static struct qcom_icc_qosbox qnm_mnoc_hf_qos = {
+ .num_ports = 2,
+ .offsets = { 0x23000, 0x63000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_mnoc_hf = {
.name = "qnm_mnoc_hf",
.id = SC7280_MASTER_MNOC_HF_MEM_NOC,
.channels = 2,
.buswidth = 32,
+ .qosbox = &qnm_mnoc_hf_qos,
.num_links = 1,
.links = { SC7280_SLAVE_LLCC },
};
+static struct qcom_icc_qosbox qnm_mnoc_sf_qos = {
+ .num_ports = 1,
+ .offsets = { 0xcf000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_mnoc_sf = {
.name = "qnm_mnoc_sf",
.id = SC7280_MASTER_MNOC_SF_MEM_NOC,
.channels = 1,
.buswidth = 32,
+ .qosbox = &qnm_mnoc_sf_qos,
.num_links = 2,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
@@ -384,20 +543,36 @@ static struct qcom_icc_node qnm_pcie = {
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC },
};
+static struct qcom_icc_qosbox qnm_snoc_gc_qos = {
+ .num_ports = 1,
+ .offsets = { 0xd3000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_snoc_gc = {
.name = "qnm_snoc_gc",
.id = SC7280_MASTER_SNOC_GC_MEM_NOC,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qnm_snoc_gc_qos,
.num_links = 1,
.links = { SC7280_SLAVE_LLCC },
};
+static struct qcom_icc_qosbox qnm_snoc_sf_qos = {
+ .num_ports = 1,
+ .offsets = { 0xd4000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_snoc_sf = {
.name = "qnm_snoc_sf",
.id = SC7280_MASTER_SNOC_SF_MEM_NOC,
.channels = 1,
.buswidth = 16,
+ .qosbox = &qnm_snoc_sf_qos,
.num_links = 3,
.links = { SC7280_SLAVE_GEM_NOC_CNOC, SC7280_SLAVE_LLCC,
SC7280_SLAVE_MEM_NOC_PCIE_SNOC },
@@ -432,56 +607,104 @@ static struct qcom_icc_node qnm_mnoc_cfg = {
.links = { SC7280_SLAVE_SERVICE_MNOC },
};
+static struct qcom_icc_qosbox qnm_video0_qos = {
+ .num_ports = 1,
+ .offsets = { 0x14000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_video0 = {
.name = "qnm_video0",
.id = SC7280_MASTER_VIDEO_P0,
.channels = 1,
.buswidth = 32,
+ .qosbox = &qnm_video0_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_SF_MEM_NOC },
};
+static struct qcom_icc_qosbox qnm_video_cpu_qos = {
+ .num_ports = 1,
+ .offsets = { 0x15000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qnm_video_cpu = {
.name = "qnm_video_cpu",
.id = SC7280_MASTER_VIDEO_PROC,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qnm_video_cpu_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_SF_MEM_NOC },
};
+static struct qcom_icc_qosbox qxm_camnoc_hf_qos = {
+ .num_ports = 2,
+ .offsets = { 0x10000, 0x10180 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qxm_camnoc_hf = {
.name = "qxm_camnoc_hf",
.id = SC7280_MASTER_CAMNOC_HF,
.channels = 2,
.buswidth = 32,
+ .qosbox = &qxm_camnoc_hf_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_HF_MEM_NOC },
};
+static struct qcom_icc_qosbox qxm_camnoc_icp_qos = {
+ .num_ports = 1,
+ .offsets = { 0x11000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qxm_camnoc_icp = {
.name = "qxm_camnoc_icp",
.id = SC7280_MASTER_CAMNOC_ICP,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qxm_camnoc_icp_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_SF_MEM_NOC },
};
+static struct qcom_icc_qosbox qxm_camnoc_sf_qos = {
+ .num_ports = 1,
+ .offsets = { 0x12000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qxm_camnoc_sf = {
.name = "qxm_camnoc_sf",
.id = SC7280_MASTER_CAMNOC_SF,
.channels = 1,
.buswidth = 32,
+ .qosbox = &qxm_camnoc_sf_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_SF_MEM_NOC },
};
+static struct qcom_icc_qosbox qxm_mdp0_qos = {
+ .num_ports = 1,
+ .offsets = { 0x16000 },
+ .prio = 0,
+ .urg_fwd = 1,
+};
+
static struct qcom_icc_node qxm_mdp0 = {
.name = "qxm_mdp0",
.id = SC7280_MASTER_MDP0,
.channels = 1,
.buswidth = 32,
+ .qosbox = &qxm_mdp0_qos,
.num_links = 1,
.links = { SC7280_SLAVE_MNOC_HF_MEM_NOC },
};
@@ -531,20 +754,36 @@ static struct qcom_icc_node qnm_snoc_cfg = {
.links = { SC7280_SLAVE_SERVICE_SNOC },
};
+static struct qcom_icc_qosbox qxm_pimem_qos = {
+ .num_ports = 1,
+ .offsets = { 0x8000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node qxm_pimem = {
.name = "qxm_pimem",
.id = SC7280_MASTER_PIMEM,
.channels = 1,
.buswidth = 8,
+ .qosbox = &qxm_pimem_qos,
.num_links = 1,
.links = { SC7280_SLAVE_SNOC_GEM_NOC_GC },
};
+static struct qcom_icc_qosbox xm_gic_qos = {
+ .num_ports = 1,
+ .offsets = { 0xa000 },
+ .prio = 2,
+ .urg_fwd = 0,
+};
+
static struct qcom_icc_node xm_gic = {
.name = "xm_gic",
.id = SC7280_MASTER_GIC,
.channels = 1,
.buswidth = 8,
+ .qosbox = &xm_gic_qos,
.num_links = 1,
.links = { SC7280_SLAVE_SNOC_GEM_NOC_GC },
};
@@ -1503,6 +1742,7 @@ static struct qcom_icc_node * const aggre1_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_aggre1_noc = {
+ .config = &icc_regmap_config,
.nodes = aggre1_noc_nodes,
.num_nodes = ARRAY_SIZE(aggre1_noc_nodes),
.bcms = aggre1_noc_bcms,
@@ -1525,6 +1765,7 @@ static struct qcom_icc_node * const aggre2_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_aggre2_noc = {
+ .config = &icc_regmap_config,
.nodes = aggre2_noc_nodes,
.num_nodes = ARRAY_SIZE(aggre2_noc_nodes),
.bcms = aggre2_noc_bcms,
@@ -1606,6 +1847,7 @@ static struct qcom_icc_node * const cnoc2_nodes[] = {
};
static const struct qcom_icc_desc sc7280_cnoc2 = {
+ .config = &icc_regmap_config,
.nodes = cnoc2_nodes,
.num_nodes = ARRAY_SIZE(cnoc2_nodes),
.bcms = cnoc2_bcms,
@@ -1638,6 +1880,7 @@ static struct qcom_icc_node * const cnoc3_nodes[] = {
};
static const struct qcom_icc_desc sc7280_cnoc3 = {
+ .config = &icc_regmap_config,
.nodes = cnoc3_nodes,
.num_nodes = ARRAY_SIZE(cnoc3_nodes),
.bcms = cnoc3_bcms,
@@ -1654,6 +1897,7 @@ static struct qcom_icc_node * const dc_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_dc_noc = {
+ .config = &icc_regmap_config,
.nodes = dc_noc_nodes,
.num_nodes = ARRAY_SIZE(dc_noc_nodes),
.bcms = dc_noc_bcms,
@@ -1690,6 +1934,7 @@ static struct qcom_icc_node * const gem_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_gem_noc = {
+ .config = &icc_regmap_config,
.nodes = gem_noc_nodes,
.num_nodes = ARRAY_SIZE(gem_noc_nodes),
.bcms = gem_noc_bcms,
@@ -1710,6 +1955,7 @@ static struct qcom_icc_node * const lpass_ag_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_lpass_ag_noc = {
+ .config = &icc_regmap_config,
.nodes = lpass_ag_noc_nodes,
.num_nodes = ARRAY_SIZE(lpass_ag_noc_nodes),
.bcms = lpass_ag_noc_bcms,
@@ -1727,6 +1973,7 @@ static struct qcom_icc_node * const mc_virt_nodes[] = {
};
static const struct qcom_icc_desc sc7280_mc_virt = {
+ .config = &icc_regmap_config,
.nodes = mc_virt_nodes,
.num_nodes = ARRAY_SIZE(mc_virt_nodes),
.bcms = mc_virt_bcms,
@@ -1754,6 +2001,7 @@ static struct qcom_icc_node * const mmss_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_mmss_noc = {
+ .config = &icc_regmap_config,
.nodes = mmss_noc_nodes,
.num_nodes = ARRAY_SIZE(mmss_noc_nodes),
.bcms = mmss_noc_bcms,
@@ -1773,6 +2021,7 @@ static struct qcom_icc_node * const nsp_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_nsp_noc = {
+ .config = &icc_regmap_config,
.nodes = nsp_noc_nodes,
.num_nodes = ARRAY_SIZE(nsp_noc_nodes),
.bcms = nsp_noc_bcms,
@@ -1798,6 +2047,7 @@ static struct qcom_icc_node * const system_noc_nodes[] = {
};
static const struct qcom_icc_desc sc7280_system_noc = {
+ .config = &icc_regmap_config,
.nodes = system_noc_nodes,
.num_nodes = ARRAY_SIZE(system_noc_nodes),
.bcms = system_noc_bcms,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
On 22.01.2024 15:30, Odelu Kukatla wrote:
> Enable QoS for the master ports with predefined values
> for priority and urgency.
>
> Change-Id: I1c4515402bcd6df8eed814be096aa5e1fc16cef6
> Signed-off-by: Odelu Kukatla <[email protected]>
> ---
> drivers/interconnect/qcom/sc7280.c | 250 +++++++++++++++++++++++++++++
> 1 file changed, 250 insertions(+)
>
> diff --git a/drivers/interconnect/qcom/sc7280.c b/drivers/interconnect/qcom/sc7280.c
> index 7d33694368e8..719844c34894 100644
> --- a/drivers/interconnect/qcom/sc7280.c
> +++ b/drivers/interconnect/qcom/sc7280.c
> @@ -1,6 +1,7 @@
> // SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (c) 2021, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> *
> */
>
> @@ -16,29 +17,59 @@
> #include "icc-rpmh.h"
> #include "sc7280.h"
>
> +static const struct regmap_config icc_regmap_config = {
> + .reg_bits = 32,
> + .reg_stride = 4,
> + .val_bits = 32,
If you don't bother having .max_register, perhaps it could be defined
in a common file?
Also, do you really need locking between each access? If not, add
fast_io = true
Konrad