--- /dev/null
+From 3029ad91335353a70feb42acd24d580d70ab258b Mon Sep 17 00:00:00 2001
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Date: Mon, 24 Jul 2023 08:39:31 +0000
+Subject: can: ems_pci: move ASIX AX99100 ids to pci_ids.h
+
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+
+commit 3029ad91335353a70feb42acd24d580d70ab258b upstream.
+
+Move PCI Vendor and Device ID of ASIX AX99100 PCIe to Multi I/O
+Controller to pci_ids.h for its serial and parallel port driver
+support in subsequent patches.
+
+Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Acked-by: Bjorn Helgaas <bhelgaas@google.com>
+Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
+Link: https://lore.kernel.org/r/20230724083933.3173513-3-jiaqing.zhao@linux.intel.com
+[Moeko: Drop changes in drivers/net/can/sja1000/ems_pci.c]
+Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ include/linux/pci_ids.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/include/linux/pci_ids.h
++++ b/include/linux/pci_ids.h
+@@ -1764,6 +1764,10 @@
+ #define PCI_SUBDEVICE_ID_AT_2700FX 0x2701
+ #define PCI_SUBDEVICE_ID_AT_2701FX 0x2703
+
++#define PCI_VENDOR_ID_ASIX 0x125b
++#define PCI_DEVICE_ID_ASIX_AX99100 0x9100
++#define PCI_DEVICE_ID_ASIX_AX99100_LB 0x9110
++
+ #define PCI_VENDOR_ID_ESS 0x125d
+ #define PCI_DEVICE_ID_ESS_ESS1968 0x1968
+ #define PCI_DEVICE_ID_ESS_ESS1978 0x1978
--- /dev/null
+From 16aae4c64600a6319a6f10dbff833fa198bf9599 Mon Sep 17 00:00:00 2001
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Date: Mon, 24 Jul 2023 08:39:33 +0000
+Subject: parport_pc: add support for ASIX AX99100
+
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+
+commit 16aae4c64600a6319a6f10dbff833fa198bf9599 upstream.
+
+The PCI function 2 on ASIX AX99100 PCIe to Multi I/O Controller can be
+configured as a single-port parallel port controller. The subvendor id
+is 0x2000 when configured as parallel port. It supports IEEE-1284 EPP /
+ECP with its ECR on BAR1.
+
+Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
+Link: https://lore.kernel.org/r/20230724083933.3173513-5-jiaqing.zhao@linux.intel.com
+Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/parport/parport_pc.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/parport/parport_pc.c
++++ b/drivers/parport/parport_pc.c
+@@ -2624,6 +2624,7 @@ enum parport_pc_pci_cards {
+ netmos_9815,
+ netmos_9901,
+ netmos_9865,
++ asix_ax99100,
+ quatech_sppxp100,
+ wch_ch382l,
+ brainboxes_uc146,
+@@ -2689,6 +2690,7 @@ static struct parport_pc_pci {
+ /* netmos_9815 */ { 2, { { 0, 1 }, { 2, 3 }, } },
+ /* netmos_9901 */ { 1, { { 0, -1 }, } },
+ /* netmos_9865 */ { 1, { { 0, -1 }, } },
++ /* asix_ax99100 */ { 1, { { 0, 1 }, } },
+ /* quatech_sppxp100 */ { 1, { { 0, 1 }, } },
+ /* wch_ch382l */ { 1, { { 2, -1 }, } },
+ /* brainboxes_uc146 */ { 1, { { 3, -1 }, } },
+@@ -2779,6 +2781,9 @@ static const struct pci_device_id parpor
+ 0xA000, 0x1000, 0, 0, netmos_9865 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
+ 0xA000, 0x2000, 0, 0, netmos_9865 },
++ /* ASIX AX99100 PCIe to Multi I/O Controller */
++ { PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
++ 0xA000, 0x2000, 0, 0, asix_ax99100 },
+ /* Quatech SPPXP-100 Parallel port PCI ExpressCard */
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 },
--- /dev/null
+From 0b32216557ce3b2a468d1282d99b428bf72ff532 Mon Sep 17 00:00:00 2001
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Date: Mon, 24 Jul 2023 08:39:32 +0000
+Subject: serial: 8250_pci: add support for ASIX AX99100
+
+From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+
+commit 0b32216557ce3b2a468d1282d99b428bf72ff532 upstream.
+
+Each of the 4 PCI functions on ASIX AX99100 PCIe to Multi I/O
+Controller can be configured as a single-port serial port controller.
+The subvendor id is 0x1000 when configured as serial port and MSI
+interrupts are supported.
+
+Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Link: https://lore.kernel.org/r/20230724083933.3173513-4-jiaqing.zhao@linux.intel.com
+Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/tty/serial/8250/8250_pci.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/tty/serial/8250/8250_pci.c
++++ b/drivers/tty/serial/8250/8250_pci.c
+@@ -67,6 +67,8 @@ static const struct pci_device_id pci_us
+ 0xA000, 0x1000) },
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9922,
+ 0xA000, 0x1000) },
++ { PCI_DEVICE_SUB(PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
++ 0xA000, 0x1000) },
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_HP_3PAR, PCI_DEVICE_ID_HPE_PCI_SERIAL,
+ PCI_ANY_ID, PCI_ANY_ID) },
+ { }
+@@ -5757,6 +5759,14 @@ static const struct pci_device_id serial
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
+ 0xA000, 0x3004,
+ 0, 0, pbn_b0_bt_4_115200 },
++
++ /*
++ * ASIX AX99100 PCIe to Multi I/O Controller
++ */
++ { PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
++ 0xA000, 0x1000,
++ 0, 0, pbn_b0_1_115200 },
++
+ /* Intel CE4100 */
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
nilfs2-do-not-output-warnings-when-clearing-dirty-buffers.patch
nilfs2-do-not-force-clear-folio-if-buffer-is-referenced.patch
nilfs2-protect-access-to-buffers-with-no-active-references.patch
+can-ems_pci-move-asix-ax99100-ids-to-pci_ids.h.patch
+serial-8250_pci-add-support-for-asix-ax99100.patch
+parport_pc-add-support-for-asix-ax99100.patch
+x86-i8253-disable-pit-timer-0-when-not-in-use.patch
--- /dev/null
+From 70e6b7d9ae3c63df90a7bba7700e8d5c300c3c60 Mon Sep 17 00:00:00 2001
+From: David Woodhouse <dwmw@amazon.co.uk>
+Date: Fri, 2 Aug 2024 14:55:54 +0100
+Subject: x86/i8253: Disable PIT timer 0 when not in use
+
+From: David Woodhouse <dwmw@amazon.co.uk>
+
+commit 70e6b7d9ae3c63df90a7bba7700e8d5c300c3c60 upstream.
+
+Leaving the PIT interrupt running can cause noticeable steal time for
+virtual guests. The VMM generally has a timer which toggles the IRQ input
+to the PIC and I/O APIC, which takes CPU time away from the guest. Even
+on real hardware, running the counter may use power needlessly (albeit
+not much).
+
+Make sure it's turned off if it isn't going to be used.
+
+Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Tested-by: Michael Kelley <mhkelley@outlook.com>
+Link: https://lore.kernel.org/all/20240802135555.564941-1-dwmw2@infradead.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/x86/kernel/i8253.c | 11 +++++++++--
+ drivers/clocksource/i8253.c | 13 +++++++++----
+ include/linux/i8253.h | 1 +
+ 3 files changed, 19 insertions(+), 6 deletions(-)
+
+--- a/arch/x86/kernel/i8253.c
++++ b/arch/x86/kernel/i8253.c
+@@ -8,6 +8,7 @@
+ #include <linux/timex.h>
+ #include <linux/i8253.h>
+
++#include <asm/hypervisor.h>
+ #include <asm/apic.h>
+ #include <asm/hpet.h>
+ #include <asm/time.h>
+@@ -39,9 +40,15 @@ static bool __init use_pit(void)
+
+ bool __init pit_timer_init(void)
+ {
+- if (!use_pit())
++ if (!use_pit()) {
++ /*
++ * Don't just ignore the PIT. Ensure it's stopped, because
++ * VMMs otherwise steal CPU time just to pointlessly waggle
++ * the (masked) IRQ.
++ */
++ clockevent_i8253_disable();
+ return false;
+-
++ }
+ clockevent_i8253_init(true);
+ global_clock_event = &i8253_clockevent;
+ return true;
+--- a/drivers/clocksource/i8253.c
++++ b/drivers/clocksource/i8253.c
+@@ -108,11 +108,8 @@ int __init clocksource_i8253_init(void)
+ #endif
+
+ #ifdef CONFIG_CLKEVT_I8253
+-static int pit_shutdown(struct clock_event_device *evt)
++void clockevent_i8253_disable(void)
+ {
+- if (!clockevent_state_oneshot(evt) && !clockevent_state_periodic(evt))
+- return 0;
+-
+ raw_spin_lock(&i8253_lock);
+
+ outb_p(0x30, PIT_MODE);
+@@ -123,6 +120,14 @@ static int pit_shutdown(struct clock_eve
+ }
+
+ raw_spin_unlock(&i8253_lock);
++}
++
++static int pit_shutdown(struct clock_event_device *evt)
++{
++ if (!clockevent_state_oneshot(evt) && !clockevent_state_periodic(evt))
++ return 0;
++
++ clockevent_i8253_disable();
+ return 0;
+ }
+
+--- a/include/linux/i8253.h
++++ b/include/linux/i8253.h
+@@ -24,6 +24,7 @@ extern raw_spinlock_t i8253_lock;
+ extern bool i8253_clear_counter_on_shutdown;
+ extern struct clock_event_device i8253_clockevent;
+ extern void clockevent_i8253_init(bool oneshot);
++extern void clockevent_i8253_disable(void);
+
+ extern void setup_pit_timer(void);
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
