diff options
Diffstat (limited to 'target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch')
| -rw-r--r-- | target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch b/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch deleted file mode 100644 index 87b1526c3a..0000000000 --- a/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch +++ /dev/null @@ -1,109 +0,0 @@ ---- a/arch/arm/mach-cns3xxx/pcie.c -+++ b/arch/arm/mach-cns3xxx/pcie.c -@@ -86,6 +86,79 @@ static void __iomem *cns3xxx_pci_map_bus - return base + where + (devfn << 12); - } - -+static inline int check_master_abort(struct pci_bus *bus, unsigned int devfn, int where) -+{ -+ struct cns3xxx_pcie *cnspci = pbus_to_cnspci(bus); -+ -+ /* check PCI-compatible status register after access */ -+ if (cnspci->linked) { -+ void __iomem *host_base; -+ u32 sreg, ereg; -+ -+ host_base = (void __iomem *) cnspci->cfg_bases[CNS3XXX_HOST_TYPE].virtual; -+ sreg = __raw_readw(host_base + 0x6) & 0xF900; -+ ereg = __raw_readl(host_base + 0x104); // Uncorrectable Error Status Reg -+ -+ if (sreg | ereg) { -+ /* SREG: -+ * BIT15 - Detected Parity Error -+ * BIT14 - Signaled System Error -+ * BIT13 - Received Master Abort -+ * BIT12 - Received Target Abort -+ * BIT11 - Signaled Target Abort -+ * BIT08 - Master Data Parity Error -+ * -+ * EREG: -+ * BIT20 - Unsupported Request -+ * BIT19 - ECRC -+ * BIT18 - Malformed TLP -+ * BIT17 - Receiver Overflow -+ * BIT16 - Unexpected Completion -+ * BIT15 - Completer Abort -+ * BIT14 - Completion Timeout -+ * BIT13 - Flow Control Protocol Error -+ * BIT12 - Poisoned TLP -+ * BIT04 - Data Link Protocol Error -+ * -+ * TODO: see Documentation/pci-error-recovery.txt -+ * implement error_detected handler -+ */ -+/* -+ printk("pci error: %04d:%02x:%02x.%02x sreg=0x%04x ereg=0x%08x", pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), sreg, ereg); -+ if (sreg & BIT(15)) printk(" <PERR"); -+ if (sreg & BIT(14)) printk(" >SERR"); -+ if (sreg & BIT(13)) printk(" <MABRT"); -+ if (sreg & BIT(12)) printk(" <TABRT"); -+ if (sreg & BIT(11)) printk(" >TABRT"); -+ if (sreg & BIT( 8)) printk(" MPERR"); -+ -+ if (ereg & BIT(20)) printk(" Unsup"); -+ if (ereg & BIT(19)) printk(" ECRC"); -+ if (ereg & BIT(18)) printk(" MTLP"); -+ if (ereg & BIT(17)) printk(" OFLOW"); -+ if (ereg & BIT(16)) printk(" Unex"); -+ if (ereg & BIT(15)) printk(" ABRT"); -+ if (ereg & BIT(14)) printk(" COMPTO"); -+ if (ereg & BIT(13)) printk(" FLOW"); -+ if (ereg & BIT(12)) printk(" PTLP"); -+ if (ereg & BIT( 4)) printk(" DLINK"); -+ printk("\n"); -+*/ -+ pr_debug("%s failed port%d sreg=0x%04x\n", __func__, -+ pci_domain_nr(bus), sreg); -+ -+ /* make sure the status bits are reset */ -+ __raw_writew(sreg, host_base + 6); -+ __raw_writel(ereg, host_base + 0x104); -+ return 1; -+ } -+ } -+ else -+ return 1; -+ -+ return 0; -+} -+ - static int cns3xxx_pci_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) - { -@@ -95,6 +168,11 @@ static int cns3xxx_pci_read_config(struc - - ret = pci_generic_config_read(bus, devfn, where, size, val); - -+ if (check_master_abort(bus, devfn, where)) { -+ printk(KERN_ERR "pci error: %04d:%02x:%02x.%02x %02x(%d)= master_abort on read\n", pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, size); -+ return PCIBIOS_DEVICE_NOT_FOUND; -+ } -+ - if (ret == PCIBIOS_SUCCESSFUL && !bus->number && !devfn && - (where & 0xffc) == PCI_CLASS_REVISION) - /* -@@ -257,8 +335,14 @@ static void __init cns3xxx_pcie_hw_init( - static int cns3xxx_pcie_abort_handler(unsigned long addr, unsigned int fsr, - struct pt_regs *regs) - { -+#if 0 -+/* R14_ABORT = PC+4 for XSCALE but not ARM11MPCORE -+ * ignore imprecise aborts and use PCI-compatible Status register to -+ * determine errors instead -+ */ - if (fsr & (1 << 10)) - regs->ARM_pc += 4; -+#endif - return 0; - } - |