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6cccb3bb05
The original Open Systems Adapter (OSA) was introduced by IBM in the mid-90s. These were then superseded by OSA-Express in 1999 which used Queued Direct IO to greatly improve throughput. The newer cards retained the older, slower non-QDIO (OSE) modes for compatibility with older systems. In Linux, the lcs driver was responsible for cards operating in the older OSE mode and the qeth driver was introduced to allow the OSA-Express cards to operate in the newer QDIO (OSD) mode. For an S390 machine from 1998 or later, there is no reason to use the OSE mode and lcs driver as all OSA cards since 1999 provide the faster OSD mode. As a result, it's been years since we have heard of a customer configuration involving the lcs driver. This patch removes the lcs driver. The technology it supports has been obsolete for past 25+ years and is irrelevant for current use cases. Reviewed-by: Alexandra Winter <wintera@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Aswin Karuvally <aswin@linux.ibm.com> Signed-off-by: Alexandra Winter <wintera@linux.ibm.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250204103135.1619097-1-wintera@linux.ibm.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_IRQ_H
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#define _ASM_IRQ_H
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#define EXT_INTERRUPT 0
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#define IO_INTERRUPT 1
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#define THIN_INTERRUPT 2
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#define NR_IRQS_BASE 3
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#define NR_IRQS NR_IRQS_BASE
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#define NR_IRQS_LEGACY NR_IRQS_BASE
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/* External interruption codes */
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#define EXT_IRQ_INTERRUPT_KEY 0x0040
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#define EXT_IRQ_CLK_COMP 0x1004
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#define EXT_IRQ_CPU_TIMER 0x1005
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#define EXT_IRQ_WARNING_TRACK 0x1007
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#define EXT_IRQ_MALFUNC_ALERT 0x1200
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#define EXT_IRQ_EMERGENCY_SIG 0x1201
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#define EXT_IRQ_EXTERNAL_CALL 0x1202
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#define EXT_IRQ_TIMING_ALERT 0x1406
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#define EXT_IRQ_MEASURE_ALERT 0x1407
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#define EXT_IRQ_SERVICE_SIG 0x2401
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#define EXT_IRQ_CP_SERVICE 0x2603
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#define EXT_IRQ_IUCV 0x4000
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#ifndef __ASSEMBLY__
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#include <linux/hardirq.h>
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#include <linux/percpu.h>
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#include <linux/cache.h>
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#include <linux/types.h>
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#include <asm/ctlreg.h>
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enum interruption_class {
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IRQEXT_CLK,
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IRQEXT_EXC,
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IRQEXT_EMS,
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IRQEXT_TMR,
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IRQEXT_TLA,
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IRQEXT_PFL,
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IRQEXT_DSD,
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IRQEXT_VRT,
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IRQEXT_SCP,
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IRQEXT_IUC,
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IRQEXT_CMS,
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IRQEXT_CMC,
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IRQEXT_FTP,
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IRQEXT_WTI,
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IRQIO_CIO,
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IRQIO_DAS,
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IRQIO_C15,
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IRQIO_C70,
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IRQIO_TAP,
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IRQIO_VMR,
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IRQIO_CTC,
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IRQIO_ADM,
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IRQIO_CSC,
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IRQIO_VIR,
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IRQIO_QAI,
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IRQIO_APB,
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IRQIO_PCF,
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IRQIO_PCD,
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IRQIO_MSI,
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IRQIO_VAI,
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IRQIO_GAL,
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NMI_NMI,
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CPU_RST,
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NR_ARCH_IRQS
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};
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struct irq_stat {
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unsigned int irqs[NR_ARCH_IRQS];
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};
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DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
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static __always_inline void inc_irq_stat(enum interruption_class irq)
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{
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__this_cpu_inc(irq_stat.irqs[irq]);
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}
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struct ext_code {
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union {
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struct {
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unsigned short subcode;
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unsigned short code;
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};
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unsigned int int_code;
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};
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};
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typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
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int register_external_irq(u16 code, ext_int_handler_t handler);
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int unregister_external_irq(u16 code, ext_int_handler_t handler);
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enum irq_subclass {
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IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
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IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
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IRQ_SUBCLASS_WARNING_TRACK = 33,
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};
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#define CR0_IRQ_SUBCLASS_MASK \
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(CR0_WARNING_TRACK | \
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CR0_MALFUNCTION_ALERT_SUBMASK | \
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CR0_EMERGENCY_SIGNAL_SUBMASK | \
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CR0_EXTERNAL_CALL_SUBMASK | \
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CR0_CLOCK_COMPARATOR_SUBMASK | \
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CR0_CPU_TIMER_SUBMASK | \
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CR0_SERVICE_SIGNAL_SUBMASK | \
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CR0_INTERRUPT_KEY_SUBMASK | \
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CR0_MEASUREMENT_ALERT_SUBMASK | \
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CR0_ETR_SUBMASK | \
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CR0_IUCV)
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void irq_subclass_register(enum irq_subclass subclass);
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void irq_subclass_unregister(enum irq_subclass subclass);
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#define irq_canonicalize(irq) (irq)
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_IRQ_H */
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