LoongArch: Humanize the ESTAT line when showing registers
Example output looks like: [ xx.xxxxxx] ESTAT: 00001000 [INT] (IS=12 ECode=0 EsubCode=0) Signed-off-by: WANG Xuerui <git@xen0n.name> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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@ -234,11 +234,83 @@ static void print_ecfg(unsigned long x)
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pr_cont(" VS=%d)\n", (int) FIELD_GET(CSR_ECFG_VS, x));
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}
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static const char *humanize_exc_name(unsigned int ecode, unsigned int esubcode)
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{
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/*
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* LoongArch users and developers are probably more familiar with
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* those names found in the ISA manual, so we are going to print out
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* the latter. This will require some mapping.
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*/
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switch (ecode) {
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case EXCCODE_RSV: return "INT";
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case EXCCODE_TLBL: return "PIL";
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case EXCCODE_TLBS: return "PIS";
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case EXCCODE_TLBI: return "PIF";
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case EXCCODE_TLBM: return "PME";
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case EXCCODE_TLBNR: return "PNR";
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case EXCCODE_TLBNX: return "PNX";
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case EXCCODE_TLBPE: return "PPI";
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case EXCCODE_ADE:
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switch (esubcode) {
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case EXSUBCODE_ADEF: return "ADEF";
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case EXSUBCODE_ADEM: return "ADEM";
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}
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break;
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case EXCCODE_ALE: return "ALE";
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case EXCCODE_BCE: return "BCE";
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case EXCCODE_SYS: return "SYS";
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case EXCCODE_BP: return "BRK";
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case EXCCODE_INE: return "INE";
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case EXCCODE_IPE: return "IPE";
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case EXCCODE_FPDIS: return "FPD";
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case EXCCODE_LSXDIS: return "SXD";
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case EXCCODE_LASXDIS: return "ASXD";
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case EXCCODE_FPE:
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switch (esubcode) {
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case EXCSUBCODE_FPE: return "FPE";
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case EXCSUBCODE_VFPE: return "VFPE";
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}
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break;
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case EXCCODE_WATCH:
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switch (esubcode) {
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case EXCSUBCODE_WPEF: return "WPEF";
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case EXCSUBCODE_WPEM: return "WPEM";
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}
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break;
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case EXCCODE_BTDIS: return "BTD";
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case EXCCODE_BTE: return "BTE";
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case EXCCODE_GSPR: return "GSPR";
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case EXCCODE_HVC: return "HVC";
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case EXCCODE_GCM:
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switch (esubcode) {
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case EXCSUBCODE_GCSC: return "GCSC";
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case EXCSUBCODE_GCHC: return "GCHC";
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}
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break;
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/*
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* The manual did not mention the EXCCODE_SE case, but print out it
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* nevertheless.
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*/
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case EXCCODE_SE: return "SE";
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}
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return "???";
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}
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static void print_estat(unsigned long x)
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{
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unsigned int ecode = FIELD_GET(CSR_ESTAT_EXC, x);
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unsigned int esubcode = FIELD_GET(CSR_ESTAT_ESUBCODE, x);
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printk("ESTAT: %08lx [%s] (", x, humanize_exc_name(ecode, esubcode));
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print_intr_fragment("IS", FIELD_GET(CSR_ESTAT_IS, x));
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pr_cont(" ECode=%d EsubCode=%d)\n", (int) ecode, (int) esubcode);
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}
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static void __show_regs(const struct pt_regs *regs)
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{
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const int field = 2 * sizeof(unsigned long);
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unsigned int excsubcode;
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unsigned int exccode;
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unsigned int exccode = FIELD_GET(CSR_ESTAT_EXC, regs->csr_estat);
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show_regs_print_info(KERN_DEFAULT);
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@ -279,11 +351,7 @@ static void __show_regs(const struct pt_regs *regs)
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print_prmd(regs->csr_prmd);
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print_euen(regs->csr_euen);
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print_ecfg(regs->csr_ecfg);
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printk("ESTAT: %08lx\n", regs->csr_estat);
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exccode = ((regs->csr_estat) & CSR_ESTAT_EXC) >> CSR_ESTAT_EXC_SHIFT;
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excsubcode = ((regs->csr_estat) & CSR_ESTAT_ESUBCODE) >> CSR_ESTAT_ESUBCODE_SHIFT;
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printk("ExcCode : %x (SubCode %x)\n", exccode, excsubcode);
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print_estat(regs->csr_estat);
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if (exccode >= EXCCODE_TLBL && exccode <= EXCCODE_ALE)
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printk("BadVA : %0*lx\n", field, regs->csr_badvaddr);
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