[PATCH 4/7] alpha: machine check handler for tsunami

From: Magnus Lindholm
Date: Mon Mar 24 2025 - 18:28:54 EST


Move functions tsunami_pci_clr_err_1, tsunami_pci_clr_err,
tsunami_machine_check to err_tsunami.c and enable pchip
errors by seting perrmask in tsunami_init_arch().

Signed-off-by: Magnus Lindholm <linmag7@xxxxxxxxx>
---
arch/alpha/kernel/core_tsunami.c | 37 +++-----------------------------
1 file changed, 3 insertions(+), 34 deletions(-)

diff --git a/arch/alpha/kernel/core_tsunami.c b/arch/alpha/kernel/core_tsunami.c
index fc1ab73f23de..7a6c1aab5f8b 100644
--- a/arch/alpha/kernel/core_tsunami.c
+++ b/arch/alpha/kernel/core_tsunami.c
@@ -346,6 +346,9 @@ tsunami_init_one_pchip(tsunami_pchip *pchip, int index)

pchip->wsba[3].csr = 0;

+ /* Enable pchip error */
+ pchip->perrmask.csr = 0x0fff;
+
/* Enable the Monster Window to make DAC pci64 possible. */
pchip->pctl.csr |= pctl_m_mwin;

@@ -448,37 +451,3 @@ tsunami_kill_arch(int mode)
if (TSUNAMI_cchip->csc.csr & 1L<<14)
tsunami_kill_one_pchip(TSUNAMI_pchip1, 1);
}
-
-static inline void
-tsunami_pci_clr_err_1(tsunami_pchip *pchip)
-{
- pchip->perror.csr;
- pchip->perror.csr = 0x040;
- mb();
- pchip->perror.csr;
-}
-
-static inline void
-tsunami_pci_clr_err(void)
-{
- tsunami_pci_clr_err_1(TSUNAMI_pchip0);
-
- /* TSUNAMI and TYPHOON can have 2, but might only have 1 (DS10) */
- if (TSUNAMI_cchip->csc.csr & 1L<<14)
- tsunami_pci_clr_err_1(TSUNAMI_pchip1);
-}
-
-void
-tsunami_machine_check(unsigned long vector, unsigned long la_ptr)
-{
- /* Clear error before any reporting. */
- mb();
- mb(); /* magic */
- draina();
- tsunami_pci_clr_err();
- wrmces(0x7);
- mb();
-
- process_mcheck_info(vector, la_ptr, "TSUNAMI",
- mcheck_expected(smp_processor_id()));
-}
--
2.45.3