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

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Message-ID: <20250324222643.32085-5-linmag7@gmail.com>
Date: Mon, 24 Mar 2025 23:21:36 +0100
From: Magnus Lindholm <linmag7@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-alpha@...r.kernel.org
Cc: richard.henderson@...aro.org,
	mattst88@...il.com,
	arnd@...db.de,
	paulmck@...nel.org,
	glaubitz@...sik.fu-berlin.de,
	macro@...hat.com,
	mcree@...on.net.nz,
	ink@...een.parts,
	Magnus Lindholm <linmag7@...il.com>
Subject: [PATCH 4/7] alpha: machine check handler for tsunami

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@...il.com>
---
 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