| Message ID | 20240213175450.3097308-5-tanmay.shah@amd.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | add zynqmp TCM bindings | expand |
Good morning, On Tue, Feb 13, 2024 at 09:54:50AM -0800, Tanmay Shah wrote: > ZynqMP TCM information was fixed in driver. Now ZynqMP TCM information > is available in device-tree. Parse TCM information in driver > as per new bindings. > > Signed-off-by: Tanmay Shah <tanmay.shah@amd.com> > --- > > Changes in v10: > - Remove redundant changes to handle TCM in lockstep mode > > Changes in v9: > - Introduce new API to request and release core1 TCM power-domains in > lockstep mode. This will be used during prepare -> add_tcm_banks > callback to enable TCM in lockstep mode. > - Parse TCM from device-tree in lockstep mode and split mode in > uniform way. > - Fix TCM representation in device-tree in lockstep mode. > > Changes in v8: > - Remove pm_domains framework > - Remove checking of pm_domain_id validation to power on/off tcm > - Remove spurious change > - parse power-domains property from device-tree and use EEMI calls > to power on/off TCM instead of using pm domains framework > > Changes in v7: > - move checking of pm_domain_id from previous patch > - fix mem_bank_data memory allocation > > drivers/remoteproc/xlnx_r5_remoteproc.c | 112 ++++++++++++++++++++++-- > 1 file changed, 107 insertions(+), 5 deletions(-) > > diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c > index 42b0384d34f2..49e8eaf83fce 100644 > --- a/drivers/remoteproc/xlnx_r5_remoteproc.c > +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c > @@ -74,8 +74,8 @@ struct mbox_info { > }; > > /* > - * Hardcoded TCM bank values. This will be removed once TCM bindings are > - * accepted for system-dt specifications and upstreamed in linux kernel > + * Hardcoded TCM bank values. This will stay in driver to maintain backward > + * compatibility with device-tree that does not have TCM information. > */ > static const struct mem_bank_data zynqmp_tcm_banks_split[] = { > {0xffe00000UL, 0x0, 0x10000UL, PD_R5_0_ATCM, "atcm0"}, /* TCM 64KB each */ > @@ -757,6 +757,103 @@ static struct zynqmp_r5_core *zynqmp_r5_add_rproc_core(struct device *cdev) > return ERR_PTR(ret); > } > > +static int zynqmp_r5_get_tcm_node_from_dt(struct zynqmp_r5_cluster *cluster) > +{ > + int i, j, tcm_bank_count, ret, tcm_pd_idx, pd_count; > + struct of_phandle_args out_args = {0}; Is this really needed? As far as I can tell it isn't. Otherwise and if it wasn't for the modification on the DT side, I would apply this patch. Thanks, Mathieu > + struct zynqmp_r5_core *r5_core; > + struct platform_device *cpdev; > + struct mem_bank_data *tcm; > + struct device_node *np; > + struct resource *res; > + u64 abs_addr, size; > + struct device *dev; > + > + for (i = 0; i < cluster->core_count; i++) { > + r5_core = cluster->r5_cores[i]; > + dev = r5_core->dev; > + np = r5_core->np; > + > + pd_count = of_count_phandle_with_args(np, "power-domains", > + "#power-domain-cells"); > + > + if (pd_count <= 0) { > + dev_err(dev, "invalid power-domains property, %d\n", pd_count); > + return -EINVAL; > + } > + > + /* First entry in power-domains list is for r5 core, rest for TCM. */ > + tcm_bank_count = pd_count - 1; > + > + if (tcm_bank_count <= 0) { > + dev_err(dev, "invalid TCM count %d\n", tcm_bank_count); > + return -EINVAL; > + } > + > + r5_core->tcm_banks = devm_kcalloc(dev, tcm_bank_count, > + sizeof(struct mem_bank_data *), > + GFP_KERNEL); > + if (!r5_core->tcm_banks) > + ret = -ENOMEM; > + > + r5_core->tcm_bank_count = tcm_bank_count; > + for (j = 0, tcm_pd_idx = 1; j < tcm_bank_count; j++, tcm_pd_idx++) { > + tcm = devm_kzalloc(dev, sizeof(struct mem_bank_data), > + GFP_KERNEL); > + if (!tcm) > + return -ENOMEM; > + > + r5_core->tcm_banks[j] = tcm; > + > + /* Get power-domains id of TCM. */ > + ret = of_parse_phandle_with_args(np, "power-domains", > + "#power-domain-cells", > + tcm_pd_idx, &out_args); > + if (ret) { > + dev_err(r5_core->dev, > + "failed to get tcm %d pm domain, ret %d\n", > + tcm_pd_idx, ret); > + return ret; > + } > + tcm->pm_domain_id = out_args.args[0]; > + of_node_put(out_args.np); > + > + /* Get TCM address without translation. */ > + ret = of_property_read_reg(np, j, &abs_addr, &size); > + if (ret) { > + dev_err(dev, "failed to get reg property\n"); > + return ret; > + } > + > + /* > + * Remote processor can address only 32 bits > + * so convert 64-bits into 32-bits. This will discard > + * any unwanted upper 32-bits. > + */ > + tcm->da = (u32)abs_addr; > + tcm->size = (u32)size; > + > + cpdev = to_platform_device(dev); > + res = platform_get_resource(cpdev, IORESOURCE_MEM, j); > + if (!res) { > + dev_err(dev, "failed to get tcm resource\n"); > + return -EINVAL; > + } > + > + tcm->addr = (u32)res->start; > + tcm->bank_name = (char *)res->name; > + res = devm_request_mem_region(dev, tcm->addr, tcm->size, > + tcm->bank_name); > + if (!res) { > + dev_err(dev, "failed to request tcm resource\n"); > + return -EINVAL; > + } > + } > + } > + > + return 0; > +} > + > /** > * zynqmp_r5_get_tcm_node() > * Ideally this function should parse tcm node and store information > @@ -835,9 +932,14 @@ static int zynqmp_r5_core_init(struct zynqmp_r5_cluster *cluster, > struct zynqmp_r5_core *r5_core; > int ret, i; > > - ret = zynqmp_r5_get_tcm_node(cluster); > - if (ret < 0) { > - dev_err(dev, "can't get tcm node, err %d\n", ret); > + r5_core = cluster->r5_cores[0]; > + if (of_find_property(r5_core->np, "reg", NULL)) > + ret = zynqmp_r5_get_tcm_node_from_dt(cluster); > + else > + ret = zynqmp_r5_get_tcm_node(cluster); > + > + if (ret) { > + dev_err(dev, "can't get tcm, err %d\n", ret); > return ret; > } > > -- > 2.25.1 >
diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c index 42b0384d34f2..49e8eaf83fce 100644 --- a/drivers/remoteproc/xlnx_r5_remoteproc.c +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c @@ -74,8 +74,8 @@ struct mbox_info { }; /* - * Hardcoded TCM bank values. This will be removed once TCM bindings are - * accepted for system-dt specifications and upstreamed in linux kernel + * Hardcoded TCM bank values. This will stay in driver to maintain backward + * compatibility with device-tree that does not have TCM information. */ static const struct mem_bank_data zynqmp_tcm_banks_split[] = { {0xffe00000UL, 0x0, 0x10000UL, PD_R5_0_ATCM, "atcm0"}, /* TCM 64KB each */ @@ -757,6 +757,103 @@ static struct zynqmp_r5_core *zynqmp_r5_add_rproc_core(struct device *cdev) return ERR_PTR(ret); } +static int zynqmp_r5_get_tcm_node_from_dt(struct zynqmp_r5_cluster *cluster) +{ + int i, j, tcm_bank_count, ret, tcm_pd_idx, pd_count; + struct of_phandle_args out_args = {0}; + struct zynqmp_r5_core *r5_core; + struct platform_device *cpdev; + struct mem_bank_data *tcm; + struct device_node *np; + struct resource *res; + u64 abs_addr, size; + struct device *dev; + + for (i = 0; i < cluster->core_count; i++) { + r5_core = cluster->r5_cores[i]; + dev = r5_core->dev; + np = r5_core->np; + + pd_count = of_count_phandle_with_args(np, "power-domains", + "#power-domain-cells"); + + if (pd_count <= 0) { + dev_err(dev, "invalid power-domains property, %d\n", pd_count); + return -EINVAL; + } + + /* First entry in power-domains list is for r5 core, rest for TCM. */ + tcm_bank_count = pd_count - 1; + + if (tcm_bank_count <= 0) { + dev_err(dev, "invalid TCM count %d\n", tcm_bank_count); + return -EINVAL; + } + + r5_core->tcm_banks = devm_kcalloc(dev, tcm_bank_count, + sizeof(struct mem_bank_data *), + GFP_KERNEL); + if (!r5_core->tcm_banks) + ret = -ENOMEM; + + r5_core->tcm_bank_count = tcm_bank_count; + for (j = 0, tcm_pd_idx = 1; j < tcm_bank_count; j++, tcm_pd_idx++) { + tcm = devm_kzalloc(dev, sizeof(struct mem_bank_data), + GFP_KERNEL); + if (!tcm) + return -ENOMEM; + + r5_core->tcm_banks[j] = tcm; + + /* Get power-domains id of TCM. */ + ret = of_parse_phandle_with_args(np, "power-domains", + "#power-domain-cells", + tcm_pd_idx, &out_args); + if (ret) { + dev_err(r5_core->dev, + "failed to get tcm %d pm domain, ret %d\n", + tcm_pd_idx, ret); + return ret; + } + tcm->pm_domain_id = out_args.args[0]; + of_node_put(out_args.np); + + /* Get TCM address without translation. */ + ret = of_property_read_reg(np, j, &abs_addr, &size); + if (ret) { + dev_err(dev, "failed to get reg property\n"); + return ret; + } + + /* + * Remote processor can address only 32 bits + * so convert 64-bits into 32-bits. This will discard + * any unwanted upper 32-bits. + */ + tcm->da = (u32)abs_addr; + tcm->size = (u32)size; + + cpdev = to_platform_device(dev); + res = platform_get_resource(cpdev, IORESOURCE_MEM, j); + if (!res) { + dev_err(dev, "failed to get tcm resource\n"); + return -EINVAL; + } + + tcm->addr = (u32)res->start; + tcm->bank_name = (char *)res->name; + res = devm_request_mem_region(dev, tcm->addr, tcm->size, + tcm->bank_name); + if (!res) { + dev_err(dev, "failed to request tcm resource\n"); + return -EINVAL; + } + } + } + + return 0; +} + /** * zynqmp_r5_get_tcm_node() * Ideally this function should parse tcm node and store information @@ -835,9 +932,14 @@ static int zynqmp_r5_core_init(struct zynqmp_r5_cluster *cluster, struct zynqmp_r5_core *r5_core; int ret, i; - ret = zynqmp_r5_get_tcm_node(cluster); - if (ret < 0) { - dev_err(dev, "can't get tcm node, err %d\n", ret); + r5_core = cluster->r5_cores[0]; + if (of_find_property(r5_core->np, "reg", NULL)) + ret = zynqmp_r5_get_tcm_node_from_dt(cluster); + else + ret = zynqmp_r5_get_tcm_node(cluster); + + if (ret) { + dev_err(dev, "can't get tcm, err %d\n", ret); return ret; }
ZynqMP TCM information was fixed in driver. Now ZynqMP TCM information is available in device-tree. Parse TCM information in driver as per new bindings. Signed-off-by: Tanmay Shah <tanmay.shah@amd.com> --- Changes in v10: - Remove redundant changes to handle TCM in lockstep mode Changes in v9: - Introduce new API to request and release core1 TCM power-domains in lockstep mode. This will be used during prepare -> add_tcm_banks callback to enable TCM in lockstep mode. - Parse TCM from device-tree in lockstep mode and split mode in uniform way. - Fix TCM representation in device-tree in lockstep mode. Changes in v8: - Remove pm_domains framework - Remove checking of pm_domain_id validation to power on/off tcm - Remove spurious change - parse power-domains property from device-tree and use EEMI calls to power on/off TCM instead of using pm domains framework Changes in v7: - move checking of pm_domain_id from previous patch - fix mem_bank_data memory allocation drivers/remoteproc/xlnx_r5_remoteproc.c | 112 ++++++++++++++++++++++-- 1 file changed, 107 insertions(+), 5 deletions(-)