/* * Driver for Rio Karma * * (c) 2006 Bob Copeland * (c) 2006 Keith Bennett * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include "usb.h" #include "transport.h" #include "debug.h" #include "scsiglue.h" #define DRV_NAME "ums-karma" MODULE_DESCRIPTION("Driver for Rio Karma"); MODULE_AUTHOR("Bob Copeland , Keith Bennett "); MODULE_LICENSE("GPL"); #define RIO_PREFIX "RIOP\x00" #define RIO_PREFIX_LEN 5 #define RIO_SEND_LEN 40 #define RIO_RECV_LEN 0x200 #define RIO_ENTER_STORAGE 0x1 #define RIO_LEAVE_STORAGE 0x2 #define RIO_RESET 0xC struct karma_data { int in_storage; char *recv; }; static int rio_karma_init(struct us_data *us); /* * The table of devices */ #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ vendorName, productName, useProtocol, useTransport, \ initFunction, flags) \ { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } static struct usb_device_id karma_usb_ids[] = { # include "unusual_karma.h" { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, karma_usb_ids); #undef UNUSUAL_DEV /* * The flags table */ #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ vendor_name, product_name, use_protocol, use_transport, \ init_function, Flags) \ { \ .vendorName = vendor_name, \ .productName = product_name, \ .useProtocol = use_protocol, \ .useTransport = use_transport, \ .initFunction = init_function, \ } static struct us_unusual_dev karma_unusual_dev_list[] = { # include "unusual_karma.h" { } /* Terminating entry */ }; #undef UNUSUAL_DEV /* * Send commands to Rio Karma. * * For each command we send 40 bytes starting 'RIOP\0' followed by * the command number and a sequence number, which the device will ack * with a 512-byte packet with the high four bits set and everything * else null. Then we send 'RIOP\x80' followed by a zero and the * sequence number, until byte 5 in the response repeats the sequence * number. */ static int rio_karma_send_command(char cmd, struct us_data *us) { int result, partial; unsigned long timeout; static unsigned char seq = 1; struct karma_data *data = (struct karma_data *) us->extra; usb_stor_dbg(us, "sending command %04x\n", cmd); memset(us->iobuf, 0, RIO_SEND_LEN); memcpy(us->iobuf, RIO_PREFIX, RIO_PREFIX_LEN); us->iobuf[5] = cmd; us->iobuf[6] = seq; timeout = jiffies + msecs_to_jiffies(6000); for (;;) { result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, us->iobuf, RIO_SEND_LEN, &partial); if (result != USB_STOR_XFER_GOOD) goto err; result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, data->recv, RIO_RECV_LEN, &partial); if (result != USB_STOR_XFER_GOOD) goto err; if (data->recv[5] == seq) break; if (time_after(jiffies, timeout)) goto err; us->iobuf[4] = 0x80; us->iobuf[5] = 0; msleep(50); } seq++; if (seq == 0) seq = 1; usb_stor_dbg(us, "sent command %04x\n", cmd); return 0; err: usb_stor_dbg(us, "command %04x failed\n", cmd); return USB_STOR_TRANSPORT_FAILED; } /* * Trap START_STOP and READ_10 to leave/re-enter storage mode. * Everything else is propagated to the normal bulk layer. */ static int rio_karma_transport(struct scsi_cmnd *srb, struct us_data *us) { int ret; struct karma_data *data = (struct karma_data *) us->extra; if (srb->cmnd[0] == READ_10 && !data->in_storage) { ret = rio_karma_send_command(RIO_ENTER_STORAGE, us); if (ret) return ret; data->in_storage = 1; return usb_stor_Bulk_transport(srb, us); } else if (srb->cmnd[0] == START_STOP) { ret = rio_karma_send_command(RIO_LEAVE_STORAGE, us); if (ret) return ret; data->in_storage = 0; return rio_karma_send_command(RIO_RESET, us); } return usb_stor_Bulk_transport(srb, us); } static void rio_karma_destructor(void *extra) { struct karma_data *data = (struct karma_data *) extra; kfree(data->recv); } static int rio_karma_init(struct us_data *us) { int ret = 0; struct karma_data *data = kzalloc(sizeof(struct karma_data), GFP_NOIO); if (!data) goto out; data->recv = kmalloc(RIO_RECV_LEN, GFP_NOIO); if (!data->recv) { kfree(data); goto out; } us->extra = data; us->extra_destructor = rio_karma_destructor; ret = rio_karma_send_command(RIO_ENTER_STORAGE, us); data->in_storage = (ret == 0); out: return ret; } static struct scsi_host_template karma_host_template; static int karma_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct us_data *us; int result; result = usb_stor_probe1(&us, intf, id, (id - karma_usb_ids) + karma_unusual_dev_list, &karma_host_template); if (result) return result; us->transport_name = "Rio Karma/Bulk"; us->transport = rio_karma_transport; us->transport_reset = usb_stor_Bulk_reset; result = usb_stor_probe2(us); return result; } static struct usb_driver karma_driver = { .name = DRV_NAME, .probe = karma_probe, .disconnect = usb_stor_disconnect, .suspend = usb_stor_suspend, .resume = usb_stor_resume, .reset_resume = usb_stor_reset_resume, .pre_reset = usb_stor_pre_reset, .post_reset = usb_stor_post_reset, .id_table = karma_usb_ids, .soft_unbind = 1, .no_dynamic_id = 1, }; module_usb_stor_driver(karma_driver, karma_host_template, DRV_NAME); et-next.git/diff/sound/hda/array.c?h=nds-private-remove&id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3&id2=3c223c19aea85d3dda1416c187915f4a30b04b1f'>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 'sound/hda/array.c')