| Message ID | 20250107143852.3692571-11-terry.bowman@amd.com |
|---|---|
| State | New |
| Headers | show |
| Series | Enable CXL PCIe port protocol error handling and logging | expand |
On Tue, 7 Jan 2025 08:38:46 -0600 Terry Bowman <terry.bowman@amd.com> wrote: > CXL PCIe Port Protocol Error handling support will be added to the > CXL drivers in the future. In preparation, rename the existing > interfaces to support handling all CXL PCIe Port Protocol Errors. > > The driver's RAS support functions currently rely on a 'struct > cxl_dev_state' type parameter, which is not available for CXL Port > devices. However, since the same CXL RAS capability structure is > needed across most CXL components and devices, a common handling > approach should be adopted. > > To accommodate this, update the __cxl_handle_cor_ras() and > __cxl_handle_ras() functions to use a `struct device` instead of > `struct cxl_dev_state`. > > No functional changes are introduced. > > [1] CXL 3.1 Spec, 8.2.4 CXL.cache and CXL.mem Registers > > Signed-off-by: Terry Bowman <terry.bowman@amd.com> > Reviewed-by: Alejandro Lucero <alucerop@amd.com> A few protections you introduce in later patches should be here to make the change to dev safer. Otherwise looks fine. Jonathan > --- > drivers/cxl/core/pci.c | 17 ++++++++--------- > 1 file changed, 8 insertions(+), 9 deletions(-) > > diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c > index 97e6a15bea88..5699ee5b29df 100644 > --- a/drivers/cxl/core/pci.c > +++ b/drivers/cxl/core/pci.c > @@ -650,7 +650,7 @@ void read_cdat_data(struct cxl_port *port) > } > EXPORT_SYMBOL_NS_GPL(read_cdat_data, "CXL"); > > -static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds, > +static void __cxl_handle_cor_ras(struct device *dev, > void __iomem *ras_base) > { > void __iomem *addr; > @@ -663,13 +663,13 @@ static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds, > status = readl(addr); > if (status & CXL_RAS_CORRECTABLE_STATUS_MASK) { > writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr); > - trace_cxl_aer_correctable_error(cxlds->cxlmd, status); > + trace_cxl_aer_correctable_error(to_cxl_memdev(dev), status); I'd expect the protection on the dev being a memdev to be in this patch given the relaxation on the interface. Pull that bit forward form patch 14. > } > } > > static void cxl_handle_endpoint_cor_ras(struct cxl_dev_state *cxlds) > { > - return __cxl_handle_cor_ras(cxlds, cxlds->regs.ras); > + return __cxl_handle_cor_ras(&cxlds->cxlmd->dev, cxlds->regs.ras); > } > > /* CXL spec rev3.0 8.2.4.16.1 */ > @@ -693,8 +693,7 @@ static void header_log_copy(void __iomem *ras_base, u32 *log) > * Log the state of the RAS status registers and prepare them to log the > * next error status. Return 1 if reset needed. > */ > -static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, > - void __iomem *ras_base) > +static bool __cxl_handle_ras(struct device *dev, void __iomem *ras_base) > { > u32 hl[CXL_HEADERLOG_SIZE_U32]; > void __iomem *addr; > @@ -721,7 +720,7 @@ static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, > } > > header_log_copy(ras_base, hl); > - trace_cxl_aer_uncorrectable_error(cxlds->cxlmd, status, fe, hl); > + trace_cxl_aer_uncorrectable_error(to_cxl_memdev(dev), status, fe, hl); > writel(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK, addr); As above. If the interface takes a dev we need to check it is the right type of dev. > > return true; > @@ -729,7 +728,7 @@ static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, > > static bool cxl_handle_endpoint_ras(struct cxl_dev_state *cxlds) > { > - return __cxl_handle_ras(cxlds, cxlds->regs.ras); > + return __cxl_handle_ras(&cxlds->cxlmd->dev, cxlds->regs.ras); > } > > #ifdef CONFIG_PCIEAER_CXL > @@ -818,13 +817,13 @@ EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL"); > static void cxl_handle_rdport_cor_ras(struct cxl_dev_state *cxlds, > struct cxl_dport *dport) > { > - return __cxl_handle_cor_ras(cxlds, dport->regs.ras); > + return __cxl_handle_cor_ras(&cxlds->cxlmd->dev, dport->regs.ras); > } > > static bool cxl_handle_rdport_ras(struct cxl_dev_state *cxlds, > struct cxl_dport *dport) > { > - return __cxl_handle_ras(cxlds, dport->regs.ras); > + return __cxl_handle_ras(&cxlds->cxlmd->dev, dport->regs.ras); > } > > /*
Terry Bowman wrote: > CXL PCIe Port Protocol Error handling support will be added to the > CXL drivers in the future. In preparation, rename the existing > interfaces to support handling all CXL PCIe Port Protocol Errors. > > The driver's RAS support functions currently rely on a 'struct > cxl_dev_state' type parameter, which is not available for CXL Port > devices. However, since the same CXL RAS capability structure is > needed across most CXL components and devices, a common handling > approach should be adopted. > > To accommodate this, update the __cxl_handle_cor_ras() and > __cxl_handle_ras() functions to use a `struct device` instead of > `struct cxl_dev_state`. > > No functional changes are introduced. > > [1] CXL 3.1 Spec, 8.2.4 CXL.cache and CXL.mem Registers > > Signed-off-by: Terry Bowman <terry.bowman@amd.com> > Reviewed-by: Alejandro Lucero <alucerop@amd.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> [snip]
diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c index 97e6a15bea88..5699ee5b29df 100644 --- a/drivers/cxl/core/pci.c +++ b/drivers/cxl/core/pci.c @@ -650,7 +650,7 @@ void read_cdat_data(struct cxl_port *port) } EXPORT_SYMBOL_NS_GPL(read_cdat_data, "CXL"); -static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds, +static void __cxl_handle_cor_ras(struct device *dev, void __iomem *ras_base) { void __iomem *addr; @@ -663,13 +663,13 @@ static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds, status = readl(addr); if (status & CXL_RAS_CORRECTABLE_STATUS_MASK) { writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr); - trace_cxl_aer_correctable_error(cxlds->cxlmd, status); + trace_cxl_aer_correctable_error(to_cxl_memdev(dev), status); } } static void cxl_handle_endpoint_cor_ras(struct cxl_dev_state *cxlds) { - return __cxl_handle_cor_ras(cxlds, cxlds->regs.ras); + return __cxl_handle_cor_ras(&cxlds->cxlmd->dev, cxlds->regs.ras); } /* CXL spec rev3.0 8.2.4.16.1 */ @@ -693,8 +693,7 @@ static void header_log_copy(void __iomem *ras_base, u32 *log) * Log the state of the RAS status registers and prepare them to log the * next error status. Return 1 if reset needed. */ -static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, - void __iomem *ras_base) +static bool __cxl_handle_ras(struct device *dev, void __iomem *ras_base) { u32 hl[CXL_HEADERLOG_SIZE_U32]; void __iomem *addr; @@ -721,7 +720,7 @@ static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, } header_log_copy(ras_base, hl); - trace_cxl_aer_uncorrectable_error(cxlds->cxlmd, status, fe, hl); + trace_cxl_aer_uncorrectable_error(to_cxl_memdev(dev), status, fe, hl); writel(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK, addr); return true; @@ -729,7 +728,7 @@ static bool __cxl_handle_ras(struct cxl_dev_state *cxlds, static bool cxl_handle_endpoint_ras(struct cxl_dev_state *cxlds) { - return __cxl_handle_ras(cxlds, cxlds->regs.ras); + return __cxl_handle_ras(&cxlds->cxlmd->dev, cxlds->regs.ras); } #ifdef CONFIG_PCIEAER_CXL @@ -818,13 +817,13 @@ EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL"); static void cxl_handle_rdport_cor_ras(struct cxl_dev_state *cxlds, struct cxl_dport *dport) { - return __cxl_handle_cor_ras(cxlds, dport->regs.ras); + return __cxl_handle_cor_ras(&cxlds->cxlmd->dev, dport->regs.ras); } static bool cxl_handle_rdport_ras(struct cxl_dev_state *cxlds, struct cxl_dport *dport) { - return __cxl_handle_ras(cxlds, dport->regs.ras); + return __cxl_handle_ras(&cxlds->cxlmd->dev, dport->regs.ras); } /*