| Message ID | 20180620121141.15403-7-georgi.djakov@linaro.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Wed, Jun 20, 2018 at 5:11 AM Georgi Djakov <georgi.djakov@linaro.org> wrote: > > Add driver for the Qualcomm interconnect buses found in msm8916 based > platforms. > > Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> > --- > drivers/interconnect/Kconfig | 5 + > drivers/interconnect/Makefile | 1 + > drivers/interconnect/qcom/Kconfig | 11 + > drivers/interconnect/qcom/Makefile | 2 + > drivers/interconnect/qcom/msm8916.c | 495 ++++++++++++++++++++++++++++ > 5 files changed, 514 insertions(+) > create mode 100644 drivers/interconnect/qcom/Kconfig > create mode 100644 drivers/interconnect/qcom/msm8916.c > > diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig > index a261c7d41deb..07a8276fa35a 100644 > --- a/drivers/interconnect/Kconfig > +++ b/drivers/interconnect/Kconfig > @@ -8,3 +8,8 @@ menuconfig INTERCONNECT > > If unsure, say no. > > +if INTERCONNECT > + > +source "drivers/interconnect/qcom/Kconfig" > + > +endif > diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile > index 97fca2e09d24..7944cbca0527 100644 > --- a/drivers/interconnect/Makefile > +++ b/drivers/interconnect/Makefile > @@ -1,2 +1,3 @@ > # SPDX-License-Identifier: GPL-2.0 > obj-$(CONFIG_INTERCONNECT) += core.o > +obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/ > diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig > new file mode 100644 > index 000000000000..86465dc37bd4 > --- /dev/null > +++ b/drivers/interconnect/qcom/Kconfig > @@ -0,0 +1,11 @@ > +config INTERCONNECT_QCOM > + bool "Qualcomm Network-on-Chip interconnect drivers" > + depends on INTERCONNECT > + depends on ARCH_QCOM || COMPILE_TEST > + default y > + > +config INTERCONNECT_QCOM_MSM8916 > + tristate "Qualcomm MSM8916 interconnect driver" > + depends on INTERCONNECT_QCOM > + help > + This is a driver for the Qualcomm Network-on-Chip on msm8916-based platforms. > diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile > index 2a0c41db91c4..e8b24c334c5d 100644 > --- a/drivers/interconnect/qcom/Makefile > +++ b/drivers/interconnect/qcom/Makefile > @@ -1,2 +1,4 @@ > # SPDX-License-Identifier: GPL-2.0 > obj-y += smd-rpm.o > + > +obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += msm8916.o > diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c > new file mode 100644 > index 000000000000..c34f18cdea33 > --- /dev/null > +++ b/drivers/interconnect/qcom/msm8916.c > @@ -0,0 +1,495 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2018 Linaro Ltd > + * Author: Georgi Djakov <georgi.djakov@linaro.org> > + */ > + > +#include <dt-bindings/interconnect/qcom.h> > +#include <linux/clk.h> > +#include <linux/device.h> > +#include <linux/io.h> > +#include <linux/interconnect-provider.h> Nit: the previous two should be swapped for alphabetization. > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/of_platform.h> > +#include <linux/platform_device.h> > +#include <linux/slab.h> > + > +#include "smd-rpm.h" > + > +#define RPM_MASTER_FIELD_BW 0x00007762 This is unused, since it moved into that other file. > +#define RPM_BUS_MASTER_REQ 0x73616d62 > +#define RPM_BUS_SLAVE_REQ 0x766c7362 > + > +#define to_qcom_provider(_provider) \ > + container_of(_provider, struct qcom_icc_provider, provider) > + > +enum qcom_qos_mode { > + QCOM_QOS_MODE_BYPASS = 0, > + QCOM_QOS_MODE_FIXED, > + QCOM_QOS_MODE_MAX, > +}; > + > +struct qcom_icc_provider { > + struct icc_provider provider; > + void __iomem *base; > + struct clk *bus_clk; > + struct clk *bus_a_clk; > +}; > + > +#define MSM8916_MAX_LINKS 8 > + > +/** > + * struct qcom_icc_node - Qualcomm specific interconnect nodes > + * @name: the node name used in debugfs > + * @links: an array of nodes where we can go next while traversing > + * @id: a unique node identifier > + * @num_links: the total number of @links > + * @port: the offset index into the masters QoS register space > + * @buswidth: width of the interconnect between a node and the bus (bytes) > + * @ap_owned: the AP CPU does the writing to QoS registers > + * @rpm: reference to the RPM SMD driver > + * @qos_mode: QoS mode for ap_owned resources > + * @mas_rpm_id: RPM id for devices that are bus masters > + * @slv_rpm_id: RPM id for devices that are bus slaves > + * @rate: current bus clock rate in Hz > + */ > +struct qcom_icc_node { > + unsigned char *name; > + u16 links[MSM8916_MAX_LINKS]; > + u16 id; > + u16 num_links; > + u16 port; > + u16 buswidth; > + bool ap_owned; > + struct qcom_smd_rpm *rpm; This is unused. > + enum qcom_qos_mode qos_mode; > + int mas_rpm_id; > + int slv_rpm_id; > + u64 rate; > +}; > + > +struct qcom_icc_desc { > + struct qcom_icc_node **nodes; > + size_t num_nodes; > +}; > + > +#define DEFINE_QNODE(_name, _id, _port, _buswidth, _ap_owned, \ > + _mas_rpm_id, _slv_rpm_id, _qos_mode, \ > + _numlinks, ...) \ > + static struct qcom_icc_node _name = { \ > + .id = _id, \ > + .name = #_name, \ > + .port = _port, \ > + .buswidth = _buswidth, \ > + .qos_mode = _qos_mode, \ > + .ap_owned = _ap_owned, \ > + .mas_rpm_id = _mas_rpm_id, \ > + .slv_rpm_id = _slv_rpm_id, \ > + .num_links = _numlinks, \ > + .links = { __VA_ARGS__ }, \ > + } > + > +DEFINE_QNODE(mas_video, MASTER_VIDEO_P0, 8, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); > +DEFINE_QNODE(mas_jpeg, MASTER_JPEG, 6, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); > +DEFINE_QNODE(mas_vfe, MASTER_VFE, 9, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_1, SNOC_MM_INT_2); > +DEFINE_QNODE(mas_mdp, MASTER_MDP_PORT0, 7, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); > +DEFINE_QNODE(mas_qdss_bam, MASTER_QDSS_BAM, 11, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT); > +DEFINE_QNODE(mas_snoc_cfg, MASTER_SNOC_CFG, 0, 16, 0, 20, -1, QCOM_QOS_MODE_BYPASS, 1, SNOC_QDSS_INT); > +DEFINE_QNODE(mas_qdss_etr, MASTER_QDSS_ETR, 10, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT); > +DEFINE_QNODE(mm_int_0, SNOC_MM_INT_0, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC); > +DEFINE_QNODE(mm_int_1, SNOC_MM_INT_1, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC); > +DEFINE_QNODE(mm_int_2, SNOC_MM_INT_2, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_INT_0); > +DEFINE_QNODE(mm_int_bimc, SNOC_MM_INT_BIMC, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_MAS); > +DEFINE_QNODE(snoc_int_0, SNOC_INT_0, 0, 8, 0, 99, 130, QCOM_QOS_MODE_FIXED, 3, SLAVE_QDSS_STM, SLAVE_SYSTEM_IMEM, MNOC_BIMC_MAS); > +DEFINE_QNODE(snoc_int_1, SNOC_INT_1, 0, 8, 0, 100, 131, QCOM_QOS_MODE_FIXED, 3, SYSTEM_SLAVE_FAB_APPS, SLAVE_CATS_128, SLAVE_OCMEM_64); > +DEFINE_QNODE(snoc_int_bimc, SNOC_INT_BIMC, 0, 8, 0, 101, 132, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_MAS); > +DEFINE_QNODE(snoc_bimc_0_mas, SNOC_BIMC_0_MAS, 0, 8, 0, 3, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_SLV); > +DEFINE_QNODE(snoc_bimc_1_mas, SNOC_BIMC_1_MAS, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_SLV); > +DEFINE_QNODE(qdss_int, SNOC_QDSS_INT, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_BIMC); > +DEFINE_QNODE(bimc_snoc_slv, BIMC_SNOC_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_1); > +DEFINE_QNODE(snoc_pnoc_mas, MNOC_BIMC_MAS, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, MNOC_BIMC_SLV); > +DEFINE_QNODE(pnoc_snoc_slv, PNOC_SNOC_SLV, 0, 8, 0, -1, 45, QCOM_QOS_MODE_FIXED, 3, SNOC_INT_0, SNOC_INT_BIMC, SNOC_INT_1); > +DEFINE_QNODE(slv_srvc_snoc, SLAVE_SERVICE_SNOC, 0, 8, 0, -1, 29, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_qdss_stm, SLAVE_QDSS_STM, 0, 4, 0, -1, 30, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_imem, SLAVE_SYSTEM_IMEM, 0, 8, 0, -1, 26, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_apss, SYSTEM_SLAVE_FAB_APPS, 0, 4, 0, -1, 20, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_cats_0, SLAVE_CATS_128, 0, 16, 0, -1, 106, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_cats_1, SLAVE_OCMEM_64, 0, 8, 0, -1, 107, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(mas_apss, MASTER_AMPSS_M0, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); > +DEFINE_QNODE(mas_tcu0, MASTER_TCU_0, 5, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); > +DEFINE_QNODE(mas_tcu1, MASTER_TCU_1, 6, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); > +DEFINE_QNODE(mas_gfx, MASTER_GRAPHICS_3D, 2, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); > +DEFINE_QNODE(bimc_snoc_mas, BIMC_SNOC_MAS, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, BIMC_SNOC_SLV); > +DEFINE_QNODE(snoc_bimc_0_slv, SNOC_BIMC_0_SLV, 0, 8, 0, -1, 24, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0); > +DEFINE_QNODE(snoc_bimc_1_slv, SNOC_BIMC_1_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0); > +DEFINE_QNODE(slv_ebi_ch0, SLAVE_EBI_CH0, 0, 8, 0, -1, 0, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_apps_l2, SLAVE_AMPSS_L2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(snoc_pnoc_slv, MNOC_BIMC_SLV, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0); > +DEFINE_QNODE(pnoc_int_0, PNOC_INT_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 8, PNOC_SNOC_MAS, PNOC_SLV_0, PNOC_SLV_1, PNOC_SLV_2, PNOC_SLV_3, PNOC_SLV_4, PNOC_SLV_8, PNOC_SLV_9); > +DEFINE_QNODE(pnoc_int_1, PNOC_INT_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS); > +DEFINE_QNODE(pnoc_m_0, PNOC_M_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0); > +DEFINE_QNODE(pnoc_m_1, PNOC_M_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS); > +DEFINE_QNODE(pnoc_s_0, PNOC_SLV_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_CLK_CTL, SLAVE_TLMM, SLAVE_MSM_TCSR, SLAVE_SECURITY, SLAVE_MSS); > +DEFINE_QNODE(pnoc_s_1, PNOC_SLV_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_IMEM_CFG, SLAVE_CRYPTO_0_CFG, SLAVE_RPM_MSG_RAM, SLAVE_MSM_PDM, SLAVE_PRNG); > +DEFINE_QNODE(pnoc_s_2, PNOC_SLV_2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_SPDM, SLAVE_BOOT_ROM, SLAVE_BIMC_CFG, SLAVE_PNOC_CFG, SLAVE_PMIC_ARB); > +DEFINE_QNODE(pnoc_s_3, PNOC_SLV_3, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_MPM, SLAVE_IPS_CFG, SLAVE_RBCPR_CFG, SLAVE_QDSS_CFG, SLAVE_DEHR_CFG); > +DEFINE_QNODE(pnoc_s_4, PNOC_SLV_4, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_VENUS_CFG, SLAVE_CAMERA_CFG, SLAVE_DISPLAY_CFG); > +DEFINE_QNODE(pnoc_s_8, PNOC_SLV_8, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_USB_HS, SLAVE_SDCC_1, SLAVE_BLSP_1); > +DEFINE_QNODE(pnoc_s_9, PNOC_SLV_9, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_SDCC_4, SLAVE_LPASS, SLAVE_GRAPHICS_3D_CFG); > +DEFINE_QNODE(slv_imem_cfg, SLAVE_IMEM_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_crypto_0_cfg, SLAVE_CRYPTO_0_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_msg_ram, SLAVE_RPM_MSG_RAM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_pdm, SLAVE_MSM_PDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_prng, SLAVE_PRNG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_clk_ctl, SLAVE_CLK_CTL, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_mss, SLAVE_MSS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_tlmm, SLAVE_TLMM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_tcsr, SLAVE_MSM_TCSR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_security, SLAVE_SECURITY, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_spdm, SLAVE_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_pnoc_cfg, SLAVE_PNOC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_pmic_arb, SLAVE_PMIC_ARB, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_bimc_cfg, SLAVE_BIMC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_boot_rom, SLAVE_BOOT_ROM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_mpm, SLAVE_MPM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_qdss_cfg, SLAVE_QDSS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_rbcpr_cfg, SLAVE_RBCPR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_snoc_cfg, SLAVE_IPS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_dehr_cfg, SLAVE_DEHR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_venus_cfg, SLAVE_VENUS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_display_cfg, SLAVE_DISPLAY_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_camera_cfg, SLAVE_CAMERA_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_usb_hs, SLAVE_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_sdcc_1, SLAVE_SDCC_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_blsp_1, SLAVE_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_sdcc_2, SLAVE_SDCC_4, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_gfx_cfg, SLAVE_GRAPHICS_3D_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(slv_audio, SLAVE_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); > +DEFINE_QNODE(mas_blsp_1, MASTER_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1); > +DEFINE_QNODE(mas_spdm, MASTER_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); > +DEFINE_QNODE(mas_dehr, MASTER_DEHR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); > +DEFINE_QNODE(mas_audio, MASTER_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); > +DEFINE_QNODE(mas_usb_hs, MASTER_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1); > +DEFINE_QNODE(mas_pnoc_crypto_0, MASTER_CRYPTO_CORE0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); > +DEFINE_QNODE(mas_pnoc_sdcc_1, MASTER_SDCC_1, 7, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); > +DEFINE_QNODE(mas_pnoc_sdcc_2, MASTER_SDCC_2, 8, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); > +DEFINE_QNODE(pnoc_snoc_mas, PNOC_SNOC_MAS, 0, 8, 0, 29, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_SLV); > + > +static struct qcom_icc_node *msm8916_snoc_nodes[] = { > + &mas_video, > + &mas_jpeg, > + &mas_vfe, > + &mas_mdp, > + &mas_qdss_bam, > + &mas_snoc_cfg, > + &mas_qdss_etr, > + &mm_int_0, > + &mm_int_1, > + &mm_int_2, > + &mm_int_bimc, > + &snoc_int_0, > + &snoc_int_1, > + &snoc_int_bimc, > + &snoc_bimc_0_mas, > + &snoc_bimc_1_mas, > + &qdss_int, > + &bimc_snoc_slv, > + &snoc_pnoc_mas, > + &pnoc_snoc_slv, > + &slv_srvc_snoc, > + &slv_qdss_stm, > + &slv_imem, > + &slv_apss, > + &slv_cats_0, > + &slv_cats_1, > +}; > + > +static struct qcom_icc_desc msm8916_snoc = { > + .nodes = msm8916_snoc_nodes, > + .num_nodes = ARRAY_SIZE(msm8916_snoc_nodes), > +}; > + > +static struct qcom_icc_node *msm8916_bimc_nodes[] = { > + &mas_apss, > + &mas_tcu0, > + &mas_tcu1, > + &mas_gfx, > + &bimc_snoc_mas, > + &snoc_bimc_0_slv, > + &snoc_bimc_1_slv, > + &slv_ebi_ch0, > + &slv_apps_l2, > +}; > + > +static struct qcom_icc_desc msm8916_bimc = { > + .nodes = msm8916_bimc_nodes, > + .num_nodes = ARRAY_SIZE(msm8916_bimc_nodes), > +}; > + > +static struct qcom_icc_node *msm8916_pnoc_nodes[] = { > + &snoc_pnoc_slv, > + &pnoc_int_0, > + &pnoc_int_1, > + &pnoc_m_0, > + &pnoc_m_1, > + &pnoc_s_0, > + &pnoc_s_1, > + &pnoc_s_2, > + &pnoc_s_3, > + &pnoc_s_4, > + &pnoc_s_8, > + &pnoc_s_9, > + &slv_imem_cfg, > + &slv_crypto_0_cfg, > + &slv_msg_ram, > + &slv_pdm, > + &slv_prng, > + &slv_clk_ctl, > + &slv_mss, > + &slv_tlmm, > + &slv_tcsr, > + &slv_security, > + &slv_spdm, > + &slv_pnoc_cfg, > + &slv_pmic_arb, > + &slv_bimc_cfg, > + &slv_boot_rom, > + &slv_mpm, > + &slv_qdss_cfg, > + &slv_rbcpr_cfg, > + &slv_snoc_cfg, > + &slv_dehr_cfg, > + &slv_venus_cfg, > + &slv_display_cfg, > + &slv_camera_cfg, > + &slv_usb_hs, > + &slv_sdcc_1, > + &slv_blsp_1, > + &slv_sdcc_2, > + &slv_gfx_cfg, > + &slv_audio, > + &mas_blsp_1, > + &mas_spdm, > + &mas_dehr, > + &mas_audio, > + &mas_usb_hs, > + &mas_pnoc_crypto_0, > + &mas_pnoc_sdcc_1, > + &mas_pnoc_sdcc_2, > + &pnoc_snoc_mas, > +}; > + > +static struct qcom_icc_desc msm8916_pnoc = { > + .nodes = msm8916_pnoc_nodes, > + .num_nodes = ARRAY_SIZE(msm8916_pnoc_nodes), > +}; > + > +static int qcom_icc_init(struct icc_node *node) > +{ > + struct qcom_icc_provider *qp = to_qcom_provider(node->provider); > + int ret; > + > + /* TODO: init qos and priority */ > + > + clk_set_rate(qp->bus_clk, INT_MAX); Vroom! What's the rationale here? I wonder if it might be better to avoid touching the clocks initially, and expect that the boot loader sets up a decent initial set of bus frequencies for consumers that never enable bus scaling? Otherwise, I worry that this driver becomes basically an essential driver for the platform solely because of this line and the one below, when really it might not be. > + ret = clk_prepare_enable(qp->bus_clk); > + if (ret) > + pr_info("%s: error enabling bus clk (%d)\n", __func__, ret); > + clk_set_rate(qp->bus_a_clk, INT_MAX); > + ret = clk_prepare_enable(qp->bus_a_clk); > + if (ret) > + pr_info("%s: error enabling bus_a clk (%d)\n", __func__, ret); > + > + return 0; > +} > + > +static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, u32 peak_bw, > + u32 *agg_avg, u32 *agg_peak) > +{ > + *agg_avg += avg_bw; > + *agg_peak = max(*agg_peak, peak_bw); > + > + return 0; > +} > + > +static int qcom_icc_set(struct icc_node *src, struct icc_node *dst, > + u32 avg, u32 peak) > +{ > + struct qcom_icc_provider *qp; > + struct qcom_icc_node *qn; > + struct icc_node *node; > + struct icc_provider *provider; > + u64 avg_bw = icc_units_to_bps(avg); > + u64 peak_bw = icc_units_to_bps(peak); > + u64 rate = 0; > + int ret = 0; > + > + if (!src) > + node = dst; > + else > + node = src; > + > + qn = node->data; > + provider = node->provider; > + qp = to_qcom_provider(node->provider); > + > + /* set bandwidth */ > + if (qn->ap_owned) { > + /* TODO: set QoS */ > + } else { > + /* send message to the RPM processor */ > + if (qn->mas_rpm_id != -1) { > + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, > + RPM_BUS_MASTER_REQ, > + qn->mas_rpm_id, > + avg_bw); You don't check for failure here, and potentially clobber failure with success. Unless only one of mas_rpm_id and slv_rpm_id is ever set. But no, I see SNOC_INT_0/1 set both. Same for below. > + } > + > + if (qn->slv_rpm_id != -1) { > + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, > + RPM_BUS_SLAVE_REQ, > + qn->slv_rpm_id, > + avg_bw); > + } > + } > + > + rate = max(avg_bw, peak_bw); > + > + do_div(rate, qn->buswidth); > + > + if (qn->rate != rate) { > + ret = clk_set_rate(qp->bus_clk, rate); > + if (ret) { > + pr_err("set clk rate %lld error %d\n", rate, ret); > + return ret; > + } > + > + ret = clk_set_rate(qp->bus_a_clk, rate); > + if (ret) { > + pr_err("set clk rate %lld error %d\n", rate, ret); > + return ret; > + } > + > + qn->rate = rate; > + } > + > + return ret; > +} > + > +static int qnoc_probe(struct platform_device *pdev) > +{ > + const struct qcom_icc_desc *desc; > + struct qcom_icc_node **qnodes; > + struct qcom_icc_provider *qp; > + struct resource *res; > + struct icc_provider *provider; > + size_t num_nodes, i; > + int ret; > + > + /* wait for RPM */ > + if (!qcom_icc_rpm_smd_available()) > + return -EPROBE_DEFER; > + > + desc = of_device_get_match_data(&pdev->dev); > + if (!desc) > + return -EINVAL; > + > + qnodes = desc->nodes; > + num_nodes = desc->num_nodes; > + > + qp = devm_kzalloc(&pdev->dev, sizeof(*qp), GFP_KERNEL); > + if (!qp) > + return -ENOMEM; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + qp->base = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(qp->base)) > + return PTR_ERR(qp->base); > + > + qp->bus_clk = devm_clk_get(&pdev->dev, "bus_clk"); > + if (IS_ERR(qp->bus_clk)) > + return PTR_ERR(qp->bus_clk); > + > + qp->bus_a_clk = devm_clk_get(&pdev->dev, "bus_a_clk"); > + if (IS_ERR(qp->bus_a_clk)) > + return PTR_ERR(qp->bus_a_clk); > + > + provider = &qp->provider; > + provider->dev = &pdev->dev; > + provider->set = &qcom_icc_set; > + provider->aggregate = &qcom_icc_aggregate; > + INIT_LIST_HEAD(&provider->nodes); > + provider->data = qp; > + > + ret = icc_provider_add(provider); > + if (ret) { > + dev_err(&pdev->dev, "error adding interconnect provider\n"); > + return ret; > + } > + > + for (i = 0; i < num_nodes; i++) { > + struct icc_node *node; > + int ret; > + size_t j; > + > + node = icc_node_create(qnodes[i]->id); > + if (IS_ERR(node)) { > + ret = PTR_ERR(node); > + goto err; > + } > + > + node->name = qnodes[i]->name; > + node->data = qnodes[i]; > + icc_node_add(node, provider); > + > + dev_dbg(&pdev->dev, "registered node %s\n", node->name); > + > + ret = qcom_icc_init(node); > + if (ret) > + dev_err(&pdev->dev, "%s init error (%d)\n", node->name, > + ret); > + > + /* populate links */ > + for (j = 0; j < qnodes[i]->num_links; j++) > + if (qnodes[i]->links[j]) > + icc_link_create(node, qnodes[i]->links[j]); > + } > + > + platform_set_drvdata(pdev, provider); > + > + return ret; > +err: > + icc_provider_del(provider); > + return ret; > +} > + > +static int qnoc_remove(struct platform_device *pdev) > +{ > + struct icc_provider *provider = platform_get_drvdata(pdev); > + > + icc_provider_del(provider); This function can fail, so you should probably pass the failure along. > + > + return 0; > +} > + > +static const struct of_device_id qnoc_of_match[] = { > + { .compatible = "qcom,msm8916-pnoc", .data = &msm8916_pnoc }, > + { .compatible = "qcom,msm8916-snoc", .data = &msm8916_snoc }, > + { .compatible = "qcom,msm8916-bimc", .data = &msm8916_bimc }, > + { }, > +}; > +MODULE_DEVICE_TABLE(of, qnoc_of_match); > + > +static struct platform_driver qnoc_driver = { > + .probe = qnoc_probe, > + .remove = qnoc_remove, > + .driver = { > + .name = "qnoc-msm8916", > + .of_match_table = qnoc_of_match, > + }, > +}; > +module_platform_driver(qnoc_driver); > +MODULE_AUTHOR("Georgi Djakov <georgi.djakov@linaro.org>"); > +MODULE_DESCRIPTION("Qualcomm msm8916 NoC driver"); > +MODULE_LICENSE("GPL v2"); -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Evan, On 06/26/2018 11:48 PM, Evan Green wrote: > On Wed, Jun 20, 2018 at 5:11 AM Georgi Djakov <georgi.djakov@linaro.org> wrote: >> >> Add driver for the Qualcomm interconnect buses found in msm8916 based >> platforms. >> [..] >> --- /dev/null >> +++ b/drivers/interconnect/qcom/msm8916.c >> @@ -0,0 +1,495 @@ >> +// SPDX-License-Identifier: GPL-2.0 >> +/* >> + * Copyright (C) 2018 Linaro Ltd >> + * Author: Georgi Djakov <georgi.djakov@linaro.org> >> + */ >> + >> +#include <dt-bindings/interconnect/qcom.h> >> +#include <linux/clk.h> >> +#include <linux/device.h> >> +#include <linux/io.h> >> +#include <linux/interconnect-provider.h> > > Nit: the previous two should be swapped for alphabetization. Ok. >> +#include <linux/module.h> >> +#include <linux/of_device.h> >> +#include <linux/of_platform.h> >> +#include <linux/platform_device.h> >> +#include <linux/slab.h> >> + >> +#include "smd-rpm.h" >> + >> +#define RPM_MASTER_FIELD_BW 0x00007762 > > This is unused, since it moved into that other file. Ok. [..] >> +/** >> + * struct qcom_icc_node - Qualcomm specific interconnect nodes >> + * @name: the node name used in debugfs >> + * @links: an array of nodes where we can go next while traversing >> + * @id: a unique node identifier >> + * @num_links: the total number of @links >> + * @port: the offset index into the masters QoS register space >> + * @buswidth: width of the interconnect between a node and the bus (bytes) >> + * @ap_owned: the AP CPU does the writing to QoS registers >> + * @rpm: reference to the RPM SMD driver >> + * @qos_mode: QoS mode for ap_owned resources >> + * @mas_rpm_id: RPM id for devices that are bus masters >> + * @slv_rpm_id: RPM id for devices that are bus slaves >> + * @rate: current bus clock rate in Hz >> + */ >> +struct qcom_icc_node { >> + unsigned char *name; >> + u16 links[MSM8916_MAX_LINKS]; >> + u16 id; >> + u16 num_links; >> + u16 port; >> + u16 buswidth; >> + bool ap_owned; >> + struct qcom_smd_rpm *rpm; > > This is unused. Ok, will remove. >> + enum qcom_qos_mode qos_mode; >> + int mas_rpm_id; >> + int slv_rpm_id; >> + u64 rate; >> +}; >> + [..] >> +static int qcom_icc_init(struct icc_node *node) >> +{ >> + struct qcom_icc_provider *qp = to_qcom_provider(node->provider); >> + int ret; >> + >> + /* TODO: init qos and priority */ >> + >> + clk_set_rate(qp->bus_clk, INT_MAX); > > Vroom! What's the rationale here? I wonder if it might be better to > avoid touching the clocks initially, and expect that the boot loader > sets up a decent initial set of bus frequencies for consumers that > never enable bus scaling? Otherwise, I worry that this driver becomes > basically an essential driver for the platform solely because of this > line and the one below, when really it might not be. The idea is to run the interconnects at max rate until consumers start sending requests, but i understand your worry and we can live without this for now. The better solution would be to set maximum bandwidth and remove it at late_init (after consumers are registered) or use this patchset: https://lkml.org/lkml/2018/3/21/897 Actually I have some patches which add support for interconnects to keep the bandwidth constraints active until consumers are registered. The whole boot constraint thing adds complexity and introduces some overhead, but hopefully can be optimized. >> + ret = clk_prepare_enable(qp->bus_clk); >> + if (ret) >> + pr_info("%s: error enabling bus clk (%d)\n", __func__, ret); >> + clk_set_rate(qp->bus_a_clk, INT_MAX); >> + ret = clk_prepare_enable(qp->bus_a_clk); >> + if (ret) >> + pr_info("%s: error enabling bus_a clk (%d)\n", __func__, ret); >> + >> + return 0; >> +} >> + >> +static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, u32 peak_bw, >> + u32 *agg_avg, u32 *agg_peak) >> +{ >> + *agg_avg += avg_bw; >> + *agg_peak = max(*agg_peak, peak_bw); >> + >> + return 0; >> +} >> + >> +static int qcom_icc_set(struct icc_node *src, struct icc_node *dst, >> + u32 avg, u32 peak) >> +{ >> + struct qcom_icc_provider *qp; >> + struct qcom_icc_node *qn; >> + struct icc_node *node; >> + struct icc_provider *provider; >> + u64 avg_bw = icc_units_to_bps(avg); >> + u64 peak_bw = icc_units_to_bps(peak); >> + u64 rate = 0; >> + int ret = 0; >> + >> + if (!src) >> + node = dst; >> + else >> + node = src; >> + >> + qn = node->data; >> + provider = node->provider; >> + qp = to_qcom_provider(node->provider); >> + >> + /* set bandwidth */ >> + if (qn->ap_owned) { >> + /* TODO: set QoS */ >> + } else { >> + /* send message to the RPM processor */ >> + if (qn->mas_rpm_id != -1) { >> + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, >> + RPM_BUS_MASTER_REQ, >> + qn->mas_rpm_id, >> + avg_bw); > > You don't check for failure here, and potentially clobber failure with > success. Unless only one of mas_rpm_id and slv_rpm_id is ever set. But > no, I see SNOC_INT_0/1 set both. Same for below. Ok, will add error checking. >> + } >> + >> + if (qn->slv_rpm_id != -1) { >> + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, >> + RPM_BUS_SLAVE_REQ, >> + qn->slv_rpm_id, >> + avg_bw); >> + } >> + } >> + >> + rate = max(avg_bw, peak_bw); >> + >> + do_div(rate, qn->buswidth); >> + >> + if (qn->rate != rate) { >> + ret = clk_set_rate(qp->bus_clk, rate); >> + if (ret) { >> + pr_err("set clk rate %lld error %d\n", rate, ret); >> + return ret; >> + } >> + >> + ret = clk_set_rate(qp->bus_a_clk, rate); >> + if (ret) { >> + pr_err("set clk rate %lld error %d\n", rate, ret); >> + return ret; >> + } >> + >> + qn->rate = rate; >> + } >> + >> + return ret; >> +} >> + >> +static int qnoc_probe(struct platform_device *pdev) >> +{ >> + const struct qcom_icc_desc *desc; >> + struct qcom_icc_node **qnodes; >> + struct qcom_icc_provider *qp; >> + struct resource *res; >> + struct icc_provider *provider; >> + size_t num_nodes, i; >> + int ret; >> + >> + /* wait for RPM */ >> + if (!qcom_icc_rpm_smd_available()) >> + return -EPROBE_DEFER; >> + >> + desc = of_device_get_match_data(&pdev->dev); >> + if (!desc) >> + return -EINVAL; >> + >> + qnodes = desc->nodes; >> + num_nodes = desc->num_nodes; >> + >> + qp = devm_kzalloc(&pdev->dev, sizeof(*qp), GFP_KERNEL); >> + if (!qp) >> + return -ENOMEM; >> + >> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> + qp->base = devm_ioremap_resource(&pdev->dev, res); >> + if (IS_ERR(qp->base)) >> + return PTR_ERR(qp->base); >> + >> + qp->bus_clk = devm_clk_get(&pdev->dev, "bus_clk"); >> + if (IS_ERR(qp->bus_clk)) >> + return PTR_ERR(qp->bus_clk); >> + >> + qp->bus_a_clk = devm_clk_get(&pdev->dev, "bus_a_clk"); >> + if (IS_ERR(qp->bus_a_clk)) >> + return PTR_ERR(qp->bus_a_clk); >> + >> + provider = &qp->provider; >> + provider->dev = &pdev->dev; >> + provider->set = &qcom_icc_set; >> + provider->aggregate = &qcom_icc_aggregate; >> + INIT_LIST_HEAD(&provider->nodes); >> + provider->data = qp; >> + >> + ret = icc_provider_add(provider); >> + if (ret) { >> + dev_err(&pdev->dev, "error adding interconnect provider\n"); >> + return ret; >> + } >> + >> + for (i = 0; i < num_nodes; i++) { >> + struct icc_node *node; >> + int ret; >> + size_t j; >> + >> + node = icc_node_create(qnodes[i]->id); >> + if (IS_ERR(node)) { >> + ret = PTR_ERR(node); >> + goto err; >> + } >> + >> + node->name = qnodes[i]->name; >> + node->data = qnodes[i]; >> + icc_node_add(node, provider); >> + >> + dev_dbg(&pdev->dev, "registered node %s\n", node->name); >> + >> + ret = qcom_icc_init(node); >> + if (ret) >> + dev_err(&pdev->dev, "%s init error (%d)\n", node->name, >> + ret); >> + >> + /* populate links */ >> + for (j = 0; j < qnodes[i]->num_links; j++) >> + if (qnodes[i]->links[j]) >> + icc_link_create(node, qnodes[i]->links[j]); >> + } >> + >> + platform_set_drvdata(pdev, provider); >> + >> + return ret; >> +err: >> + icc_provider_del(provider); >> + return ret; >> +} >> + >> +static int qnoc_remove(struct platform_device *pdev) >> +{ >> + struct icc_provider *provider = platform_get_drvdata(pdev); >> + >> + icc_provider_del(provider); > > This function can fail, so you should probably pass the failure along. > Ok! Thank you! BR, Georgi -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sun, Jul 1, 2018 at 5:12 AM Georgi Djakov <georgi.djakov@linaro.org> wrote: > > Hi Evan, > > On 06/26/2018 11:48 PM, Evan Green wrote: > > On Wed, Jun 20, 2018 at 5:11 AM Georgi Djakov <georgi.djakov@linaro.org> wrote: > > >> +static int qcom_icc_init(struct icc_node *node) > >> +{ > >> + struct qcom_icc_provider *qp = to_qcom_provider(node->provider); > >> + int ret; > >> + > >> + /* TODO: init qos and priority */ > >> + > >> + clk_set_rate(qp->bus_clk, INT_MAX); > > > > Vroom! What's the rationale here? I wonder if it might be better to > > avoid touching the clocks initially, and expect that the boot loader > > sets up a decent initial set of bus frequencies for consumers that > > never enable bus scaling? Otherwise, I worry that this driver becomes > > basically an essential driver for the platform solely because of this > > line and the one below, when really it might not be. > > The idea is to run the interconnects at max rate until consumers start > sending requests, but i understand your worry and we can live without > this for now. The better solution would be to set maximum bandwidth and > remove it at late_init (after consumers are registered) or use this > patchset: https://lkml.org/lkml/2018/3/21/897 > Actually I have some patches which add support for interconnects to keep > the bandwidth constraints active until consumers are registered. The > whole boot constraint thing adds complexity and introduces some > overhead, but hopefully can be optimized. Ah, that makes sense. This is a trickier issue than I was thinking before. On one hand, you don't want to shut off bandwidth to a device that was set up correctly by the boot environment and should keep working until the driver comes up, like LCD. But on the other hand, if a driver fails to come up, or fails to ask for bus bandwidth, you're now burning at max. And then there's the issue of whether or not this should be a required or optional driver for platforms that support it (it would be nice if the system booted even without this driver, but maybe for others that's a non-goal). I agree this is shouldn't hold up this initial set of framework patches, we can solve this in a future set. -Evan -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig index a261c7d41deb..07a8276fa35a 100644 --- a/drivers/interconnect/Kconfig +++ b/drivers/interconnect/Kconfig @@ -8,3 +8,8 @@ menuconfig INTERCONNECT If unsure, say no. +if INTERCONNECT + +source "drivers/interconnect/qcom/Kconfig" + +endif diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile index 97fca2e09d24..7944cbca0527 100644 --- a/drivers/interconnect/Makefile +++ b/drivers/interconnect/Makefile @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_INTERCONNECT) += core.o +obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/ diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig new file mode 100644 index 000000000000..86465dc37bd4 --- /dev/null +++ b/drivers/interconnect/qcom/Kconfig @@ -0,0 +1,11 @@ +config INTERCONNECT_QCOM + bool "Qualcomm Network-on-Chip interconnect drivers" + depends on INTERCONNECT + depends on ARCH_QCOM || COMPILE_TEST + default y + +config INTERCONNECT_QCOM_MSM8916 + tristate "Qualcomm MSM8916 interconnect driver" + depends on INTERCONNECT_QCOM + help + This is a driver for the Qualcomm Network-on-Chip on msm8916-based platforms. diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile index 2a0c41db91c4..e8b24c334c5d 100644 --- a/drivers/interconnect/qcom/Makefile +++ b/drivers/interconnect/qcom/Makefile @@ -1,2 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-y += smd-rpm.o + +obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += msm8916.o diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c new file mode 100644 index 000000000000..c34f18cdea33 --- /dev/null +++ b/drivers/interconnect/qcom/msm8916.c @@ -0,0 +1,495 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Linaro Ltd + * Author: Georgi Djakov <georgi.djakov@linaro.org> + */ + +#include <dt-bindings/interconnect/qcom.h> +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/io.h> +#include <linux/interconnect-provider.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include "smd-rpm.h" + +#define RPM_MASTER_FIELD_BW 0x00007762 +#define RPM_BUS_MASTER_REQ 0x73616d62 +#define RPM_BUS_SLAVE_REQ 0x766c7362 + +#define to_qcom_provider(_provider) \ + container_of(_provider, struct qcom_icc_provider, provider) + +enum qcom_qos_mode { + QCOM_QOS_MODE_BYPASS = 0, + QCOM_QOS_MODE_FIXED, + QCOM_QOS_MODE_MAX, +}; + +struct qcom_icc_provider { + struct icc_provider provider; + void __iomem *base; + struct clk *bus_clk; + struct clk *bus_a_clk; +}; + +#define MSM8916_MAX_LINKS 8 + +/** + * struct qcom_icc_node - Qualcomm specific interconnect nodes + * @name: the node name used in debugfs + * @links: an array of nodes where we can go next while traversing + * @id: a unique node identifier + * @num_links: the total number of @links + * @port: the offset index into the masters QoS register space + * @buswidth: width of the interconnect between a node and the bus (bytes) + * @ap_owned: the AP CPU does the writing to QoS registers + * @rpm: reference to the RPM SMD driver + * @qos_mode: QoS mode for ap_owned resources + * @mas_rpm_id: RPM id for devices that are bus masters + * @slv_rpm_id: RPM id for devices that are bus slaves + * @rate: current bus clock rate in Hz + */ +struct qcom_icc_node { + unsigned char *name; + u16 links[MSM8916_MAX_LINKS]; + u16 id; + u16 num_links; + u16 port; + u16 buswidth; + bool ap_owned; + struct qcom_smd_rpm *rpm; + enum qcom_qos_mode qos_mode; + int mas_rpm_id; + int slv_rpm_id; + u64 rate; +}; + +struct qcom_icc_desc { + struct qcom_icc_node **nodes; + size_t num_nodes; +}; + +#define DEFINE_QNODE(_name, _id, _port, _buswidth, _ap_owned, \ + _mas_rpm_id, _slv_rpm_id, _qos_mode, \ + _numlinks, ...) \ + static struct qcom_icc_node _name = { \ + .id = _id, \ + .name = #_name, \ + .port = _port, \ + .buswidth = _buswidth, \ + .qos_mode = _qos_mode, \ + .ap_owned = _ap_owned, \ + .mas_rpm_id = _mas_rpm_id, \ + .slv_rpm_id = _slv_rpm_id, \ + .num_links = _numlinks, \ + .links = { __VA_ARGS__ }, \ + } + +DEFINE_QNODE(mas_video, MASTER_VIDEO_P0, 8, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); +DEFINE_QNODE(mas_jpeg, MASTER_JPEG, 6, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); +DEFINE_QNODE(mas_vfe, MASTER_VFE, 9, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_1, SNOC_MM_INT_2); +DEFINE_QNODE(mas_mdp, MASTER_MDP_PORT0, 7, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2); +DEFINE_QNODE(mas_qdss_bam, MASTER_QDSS_BAM, 11, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT); +DEFINE_QNODE(mas_snoc_cfg, MASTER_SNOC_CFG, 0, 16, 0, 20, -1, QCOM_QOS_MODE_BYPASS, 1, SNOC_QDSS_INT); +DEFINE_QNODE(mas_qdss_etr, MASTER_QDSS_ETR, 10, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT); +DEFINE_QNODE(mm_int_0, SNOC_MM_INT_0, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC); +DEFINE_QNODE(mm_int_1, SNOC_MM_INT_1, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC); +DEFINE_QNODE(mm_int_2, SNOC_MM_INT_2, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_INT_0); +DEFINE_QNODE(mm_int_bimc, SNOC_MM_INT_BIMC, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_MAS); +DEFINE_QNODE(snoc_int_0, SNOC_INT_0, 0, 8, 0, 99, 130, QCOM_QOS_MODE_FIXED, 3, SLAVE_QDSS_STM, SLAVE_SYSTEM_IMEM, MNOC_BIMC_MAS); +DEFINE_QNODE(snoc_int_1, SNOC_INT_1, 0, 8, 0, 100, 131, QCOM_QOS_MODE_FIXED, 3, SYSTEM_SLAVE_FAB_APPS, SLAVE_CATS_128, SLAVE_OCMEM_64); +DEFINE_QNODE(snoc_int_bimc, SNOC_INT_BIMC, 0, 8, 0, 101, 132, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_MAS); +DEFINE_QNODE(snoc_bimc_0_mas, SNOC_BIMC_0_MAS, 0, 8, 0, 3, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_SLV); +DEFINE_QNODE(snoc_bimc_1_mas, SNOC_BIMC_1_MAS, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_SLV); +DEFINE_QNODE(qdss_int, SNOC_QDSS_INT, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_BIMC); +DEFINE_QNODE(bimc_snoc_slv, BIMC_SNOC_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_1); +DEFINE_QNODE(snoc_pnoc_mas, MNOC_BIMC_MAS, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, MNOC_BIMC_SLV); +DEFINE_QNODE(pnoc_snoc_slv, PNOC_SNOC_SLV, 0, 8, 0, -1, 45, QCOM_QOS_MODE_FIXED, 3, SNOC_INT_0, SNOC_INT_BIMC, SNOC_INT_1); +DEFINE_QNODE(slv_srvc_snoc, SLAVE_SERVICE_SNOC, 0, 8, 0, -1, 29, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_qdss_stm, SLAVE_QDSS_STM, 0, 4, 0, -1, 30, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_imem, SLAVE_SYSTEM_IMEM, 0, 8, 0, -1, 26, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_apss, SYSTEM_SLAVE_FAB_APPS, 0, 4, 0, -1, 20, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_cats_0, SLAVE_CATS_128, 0, 16, 0, -1, 106, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_cats_1, SLAVE_OCMEM_64, 0, 8, 0, -1, 107, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(mas_apss, MASTER_AMPSS_M0, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); +DEFINE_QNODE(mas_tcu0, MASTER_TCU_0, 5, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); +DEFINE_QNODE(mas_tcu1, MASTER_TCU_1, 6, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); +DEFINE_QNODE(mas_gfx, MASTER_GRAPHICS_3D, 2, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2); +DEFINE_QNODE(bimc_snoc_mas, BIMC_SNOC_MAS, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, BIMC_SNOC_SLV); +DEFINE_QNODE(snoc_bimc_0_slv, SNOC_BIMC_0_SLV, 0, 8, 0, -1, 24, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0); +DEFINE_QNODE(snoc_bimc_1_slv, SNOC_BIMC_1_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0); +DEFINE_QNODE(slv_ebi_ch0, SLAVE_EBI_CH0, 0, 8, 0, -1, 0, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_apps_l2, SLAVE_AMPSS_L2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(snoc_pnoc_slv, MNOC_BIMC_SLV, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0); +DEFINE_QNODE(pnoc_int_0, PNOC_INT_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 8, PNOC_SNOC_MAS, PNOC_SLV_0, PNOC_SLV_1, PNOC_SLV_2, PNOC_SLV_3, PNOC_SLV_4, PNOC_SLV_8, PNOC_SLV_9); +DEFINE_QNODE(pnoc_int_1, PNOC_INT_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS); +DEFINE_QNODE(pnoc_m_0, PNOC_M_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0); +DEFINE_QNODE(pnoc_m_1, PNOC_M_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS); +DEFINE_QNODE(pnoc_s_0, PNOC_SLV_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_CLK_CTL, SLAVE_TLMM, SLAVE_MSM_TCSR, SLAVE_SECURITY, SLAVE_MSS); +DEFINE_QNODE(pnoc_s_1, PNOC_SLV_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_IMEM_CFG, SLAVE_CRYPTO_0_CFG, SLAVE_RPM_MSG_RAM, SLAVE_MSM_PDM, SLAVE_PRNG); +DEFINE_QNODE(pnoc_s_2, PNOC_SLV_2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_SPDM, SLAVE_BOOT_ROM, SLAVE_BIMC_CFG, SLAVE_PNOC_CFG, SLAVE_PMIC_ARB); +DEFINE_QNODE(pnoc_s_3, PNOC_SLV_3, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_MPM, SLAVE_IPS_CFG, SLAVE_RBCPR_CFG, SLAVE_QDSS_CFG, SLAVE_DEHR_CFG); +DEFINE_QNODE(pnoc_s_4, PNOC_SLV_4, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_VENUS_CFG, SLAVE_CAMERA_CFG, SLAVE_DISPLAY_CFG); +DEFINE_QNODE(pnoc_s_8, PNOC_SLV_8, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_USB_HS, SLAVE_SDCC_1, SLAVE_BLSP_1); +DEFINE_QNODE(pnoc_s_9, PNOC_SLV_9, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_SDCC_4, SLAVE_LPASS, SLAVE_GRAPHICS_3D_CFG); +DEFINE_QNODE(slv_imem_cfg, SLAVE_IMEM_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_crypto_0_cfg, SLAVE_CRYPTO_0_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_msg_ram, SLAVE_RPM_MSG_RAM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_pdm, SLAVE_MSM_PDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_prng, SLAVE_PRNG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_clk_ctl, SLAVE_CLK_CTL, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_mss, SLAVE_MSS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_tlmm, SLAVE_TLMM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_tcsr, SLAVE_MSM_TCSR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_security, SLAVE_SECURITY, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_spdm, SLAVE_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_pnoc_cfg, SLAVE_PNOC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_pmic_arb, SLAVE_PMIC_ARB, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_bimc_cfg, SLAVE_BIMC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_boot_rom, SLAVE_BOOT_ROM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_mpm, SLAVE_MPM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_qdss_cfg, SLAVE_QDSS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_rbcpr_cfg, SLAVE_RBCPR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_snoc_cfg, SLAVE_IPS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_dehr_cfg, SLAVE_DEHR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_venus_cfg, SLAVE_VENUS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_display_cfg, SLAVE_DISPLAY_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_camera_cfg, SLAVE_CAMERA_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_usb_hs, SLAVE_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_sdcc_1, SLAVE_SDCC_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_blsp_1, SLAVE_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_sdcc_2, SLAVE_SDCC_4, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_gfx_cfg, SLAVE_GRAPHICS_3D_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(slv_audio, SLAVE_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0); +DEFINE_QNODE(mas_blsp_1, MASTER_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1); +DEFINE_QNODE(mas_spdm, MASTER_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); +DEFINE_QNODE(mas_dehr, MASTER_DEHR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); +DEFINE_QNODE(mas_audio, MASTER_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0); +DEFINE_QNODE(mas_usb_hs, MASTER_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1); +DEFINE_QNODE(mas_pnoc_crypto_0, MASTER_CRYPTO_CORE0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); +DEFINE_QNODE(mas_pnoc_sdcc_1, MASTER_SDCC_1, 7, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); +DEFINE_QNODE(mas_pnoc_sdcc_2, MASTER_SDCC_2, 8, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1); +DEFINE_QNODE(pnoc_snoc_mas, PNOC_SNOC_MAS, 0, 8, 0, 29, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_SLV); + +static struct qcom_icc_node *msm8916_snoc_nodes[] = { + &mas_video, + &mas_jpeg, + &mas_vfe, + &mas_mdp, + &mas_qdss_bam, + &mas_snoc_cfg, + &mas_qdss_etr, + &mm_int_0, + &mm_int_1, + &mm_int_2, + &mm_int_bimc, + &snoc_int_0, + &snoc_int_1, + &snoc_int_bimc, + &snoc_bimc_0_mas, + &snoc_bimc_1_mas, + &qdss_int, + &bimc_snoc_slv, + &snoc_pnoc_mas, + &pnoc_snoc_slv, + &slv_srvc_snoc, + &slv_qdss_stm, + &slv_imem, + &slv_apss, + &slv_cats_0, + &slv_cats_1, +}; + +static struct qcom_icc_desc msm8916_snoc = { + .nodes = msm8916_snoc_nodes, + .num_nodes = ARRAY_SIZE(msm8916_snoc_nodes), +}; + +static struct qcom_icc_node *msm8916_bimc_nodes[] = { + &mas_apss, + &mas_tcu0, + &mas_tcu1, + &mas_gfx, + &bimc_snoc_mas, + &snoc_bimc_0_slv, + &snoc_bimc_1_slv, + &slv_ebi_ch0, + &slv_apps_l2, +}; + +static struct qcom_icc_desc msm8916_bimc = { + .nodes = msm8916_bimc_nodes, + .num_nodes = ARRAY_SIZE(msm8916_bimc_nodes), +}; + +static struct qcom_icc_node *msm8916_pnoc_nodes[] = { + &snoc_pnoc_slv, + &pnoc_int_0, + &pnoc_int_1, + &pnoc_m_0, + &pnoc_m_1, + &pnoc_s_0, + &pnoc_s_1, + &pnoc_s_2, + &pnoc_s_3, + &pnoc_s_4, + &pnoc_s_8, + &pnoc_s_9, + &slv_imem_cfg, + &slv_crypto_0_cfg, + &slv_msg_ram, + &slv_pdm, + &slv_prng, + &slv_clk_ctl, + &slv_mss, + &slv_tlmm, + &slv_tcsr, + &slv_security, + &slv_spdm, + &slv_pnoc_cfg, + &slv_pmic_arb, + &slv_bimc_cfg, + &slv_boot_rom, + &slv_mpm, + &slv_qdss_cfg, + &slv_rbcpr_cfg, + &slv_snoc_cfg, + &slv_dehr_cfg, + &slv_venus_cfg, + &slv_display_cfg, + &slv_camera_cfg, + &slv_usb_hs, + &slv_sdcc_1, + &slv_blsp_1, + &slv_sdcc_2, + &slv_gfx_cfg, + &slv_audio, + &mas_blsp_1, + &mas_spdm, + &mas_dehr, + &mas_audio, + &mas_usb_hs, + &mas_pnoc_crypto_0, + &mas_pnoc_sdcc_1, + &mas_pnoc_sdcc_2, + &pnoc_snoc_mas, +}; + +static struct qcom_icc_desc msm8916_pnoc = { + .nodes = msm8916_pnoc_nodes, + .num_nodes = ARRAY_SIZE(msm8916_pnoc_nodes), +}; + +static int qcom_icc_init(struct icc_node *node) +{ + struct qcom_icc_provider *qp = to_qcom_provider(node->provider); + int ret; + + /* TODO: init qos and priority */ + + clk_set_rate(qp->bus_clk, INT_MAX); + ret = clk_prepare_enable(qp->bus_clk); + if (ret) + pr_info("%s: error enabling bus clk (%d)\n", __func__, ret); + clk_set_rate(qp->bus_a_clk, INT_MAX); + ret = clk_prepare_enable(qp->bus_a_clk); + if (ret) + pr_info("%s: error enabling bus_a clk (%d)\n", __func__, ret); + + return 0; +} + +static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, u32 peak_bw, + u32 *agg_avg, u32 *agg_peak) +{ + *agg_avg += avg_bw; + *agg_peak = max(*agg_peak, peak_bw); + + return 0; +} + +static int qcom_icc_set(struct icc_node *src, struct icc_node *dst, + u32 avg, u32 peak) +{ + struct qcom_icc_provider *qp; + struct qcom_icc_node *qn; + struct icc_node *node; + struct icc_provider *provider; + u64 avg_bw = icc_units_to_bps(avg); + u64 peak_bw = icc_units_to_bps(peak); + u64 rate = 0; + int ret = 0; + + if (!src) + node = dst; + else + node = src; + + qn = node->data; + provider = node->provider; + qp = to_qcom_provider(node->provider); + + /* set bandwidth */ + if (qn->ap_owned) { + /* TODO: set QoS */ + } else { + /* send message to the RPM processor */ + if (qn->mas_rpm_id != -1) { + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, + RPM_BUS_MASTER_REQ, + qn->mas_rpm_id, + avg_bw); + } + + if (qn->slv_rpm_id != -1) { + ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, + RPM_BUS_SLAVE_REQ, + qn->slv_rpm_id, + avg_bw); + } + } + + rate = max(avg_bw, peak_bw); + + do_div(rate, qn->buswidth); + + if (qn->rate != rate) { + ret = clk_set_rate(qp->bus_clk, rate); + if (ret) { + pr_err("set clk rate %lld error %d\n", rate, ret); + return ret; + } + + ret = clk_set_rate(qp->bus_a_clk, rate); + if (ret) { + pr_err("set clk rate %lld error %d\n", rate, ret); + return ret; + } + + qn->rate = rate; + } + + return ret; +} + +static int qnoc_probe(struct platform_device *pdev) +{ + const struct qcom_icc_desc *desc; + struct qcom_icc_node **qnodes; + struct qcom_icc_provider *qp; + struct resource *res; + struct icc_provider *provider; + size_t num_nodes, i; + int ret; + + /* wait for RPM */ + if (!qcom_icc_rpm_smd_available()) + return -EPROBE_DEFER; + + desc = of_device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + qnodes = desc->nodes; + num_nodes = desc->num_nodes; + + qp = devm_kzalloc(&pdev->dev, sizeof(*qp), GFP_KERNEL); + if (!qp) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + qp->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(qp->base)) + return PTR_ERR(qp->base); + + qp->bus_clk = devm_clk_get(&pdev->dev, "bus_clk"); + if (IS_ERR(qp->bus_clk)) + return PTR_ERR(qp->bus_clk); + + qp->bus_a_clk = devm_clk_get(&pdev->dev, "bus_a_clk"); + if (IS_ERR(qp->bus_a_clk)) + return PTR_ERR(qp->bus_a_clk); + + provider = &qp->provider; + provider->dev = &pdev->dev; + provider->set = &qcom_icc_set; + provider->aggregate = &qcom_icc_aggregate; + INIT_LIST_HEAD(&provider->nodes); + provider->data = qp; + + ret = icc_provider_add(provider); + if (ret) { + dev_err(&pdev->dev, "error adding interconnect provider\n"); + return ret; + } + + for (i = 0; i < num_nodes; i++) { + struct icc_node *node; + int ret; + size_t j; + + node = icc_node_create(qnodes[i]->id); + if (IS_ERR(node)) { + ret = PTR_ERR(node); + goto err; + } + + node->name = qnodes[i]->name; + node->data = qnodes[i]; + icc_node_add(node, provider); + + dev_dbg(&pdev->dev, "registered node %s\n", node->name); + + ret = qcom_icc_init(node); + if (ret) + dev_err(&pdev->dev, "%s init error (%d)\n", node->name, + ret); + + /* populate links */ + for (j = 0; j < qnodes[i]->num_links; j++) + if (qnodes[i]->links[j]) + icc_link_create(node, qnodes[i]->links[j]); + } + + platform_set_drvdata(pdev, provider); + + return ret; +err: + icc_provider_del(provider); + return ret; +} + +static int qnoc_remove(struct platform_device *pdev) +{ + struct icc_provider *provider = platform_get_drvdata(pdev); + + icc_provider_del(provider); + + return 0; +} + +static const struct of_device_id qnoc_of_match[] = { + { .compatible = "qcom,msm8916-pnoc", .data = &msm8916_pnoc }, + { .compatible = "qcom,msm8916-snoc", .data = &msm8916_snoc }, + { .compatible = "qcom,msm8916-bimc", .data = &msm8916_bimc }, + { }, +}; +MODULE_DEVICE_TABLE(of, qnoc_of_match); + +static struct platform_driver qnoc_driver = { + .probe = qnoc_probe, + .remove = qnoc_remove, + .driver = { + .name = "qnoc-msm8916", + .of_match_table = qnoc_of_match, + }, +}; +module_platform_driver(qnoc_driver); +MODULE_AUTHOR("Georgi Djakov <georgi.djakov@linaro.org>"); +MODULE_DESCRIPTION("Qualcomm msm8916 NoC driver"); +MODULE_LICENSE("GPL v2");
Add driver for the Qualcomm interconnect buses found in msm8916 based platforms. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> --- drivers/interconnect/Kconfig | 5 + drivers/interconnect/Makefile | 1 + drivers/interconnect/qcom/Kconfig | 11 + drivers/interconnect/qcom/Makefile | 2 + drivers/interconnect/qcom/msm8916.c | 495 ++++++++++++++++++++++++++++ 5 files changed, 514 insertions(+) create mode 100644 drivers/interconnect/qcom/Kconfig create mode 100644 drivers/interconnect/qcom/msm8916.c -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html