/* * IPWireless 3G PCMCIA Network Driver * * Original code * by Stephen Blackheath , * Ben Martel * * Copyrighted as follows: * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) * * Various driver changes and rewrites, port to new kernels * Copyright (C) 2006-2007 Jiri Kosina * * Misc code cleanups and updates * Copyright (C) 2007 David Sterba */ #ifndef _IPWIRELESS_CS_HARDWARE_H_ #define _IPWIRELESS_CS_HARDWARE_H_ #include #include #include #define IPW_CONTROL_LINE_CTS 0x0001 #define IPW_CONTROL_LINE_DCD 0x0002 #define IPW_CONTROL_LINE_DSR 0x0004 #define IPW_CONTROL_LINE_RI 0x0008 #define IPW_CONTROL_LINE_DTR 0x0010 #define IPW_CONTROL_LINE_RTS 0x0020 struct ipw_hardware; struct ipw_network; struct ipw_hardware *ipwireless_hardware_create(void); void ipwireless_hardware_free(struct ipw_hardware *hw); irqreturn_t ipwireless_interrupt(int irq, void *dev_id); int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, int state); int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, int state); int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx, const unsigned char *data, unsigned int length, void (*packet_sent_callback) (void *cb, unsigned int length), void *sent_cb_data); void ipwireless_associate_network(struct ipw_hardware *hw, struct ipw_network *net); void ipwireless_stop_interrupts(struct ipw_hardware *hw); void ipwireless_init_hardware_v1(struct ipw_hardware *hw, unsigned int base_port, void __iomem *attr_memory, void __iomem *common_memory, int is_v2_card, void (*reboot_cb) (void *data), void *reboot_cb_data); void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw); void ipwireless_sleep(unsigned int tenths); #endif e978b22efa1db9f6e71b24440b5f1d93e968ee3'>treecommitdiff
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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2017-02-03 14:18:39 -0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-04 00:11:08 +0100
commit6e978b22efa1db9f6e71b24440b5f1d93e968ee3 (patch)
treec666f7a26b860674848949e39a610222b0723f89 /include/rdma/ib_sa.h
parent3c223c19aea85d3dda1416c187915f4a30b04b1f (diff)
cpufreq: intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/rdma/ib_sa.h')