/* * Initialisation code for Cyrix/NatSemi VSA1 softaudio * * (C) Copyright 2003 Red Hat Inc * * XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems. * The older version (VSA1) provides fairly good soundblaster emulation * although there are a couple of bugs: large DMA buffers break record, * and the MPU event handling seems suspect. VSA2 allows the native driver * to control the AC97 audio engine directly and requires a different driver. * * Thanks to National Semiconductor for providing the needed information * on the XpressAudio(tm) internals. * * 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. * * TO DO: * Investigate whether we can portably support Cognac (5520) in the * same manner. */ #include #include #include #include #include #include "sound_config.h" #include "sb.h" /* * Read a soundblaster compatible mixer register. * In this case we are actually reading an SMI trap * not real hardware. */ static u8 mixer_read(unsigned long io, u8 reg) { outb(reg, io + 4); udelay(20); reg = inb(io + 5); udelay(20); return reg; } static int probe_one(struct pci_dev *pdev, const struct pci_device_id *ent) { struct address_info *hw_config; unsigned long base; void __iomem *mem; unsigned long io; u16 map; u8 irq, dma8, dma16; int oldquiet; extern int sb_be_quiet; base = pci_resource_start(pdev, 0); if(base == 0UL) return 1; mem = ioremap(base, 128); if (!mem) return 1; map = readw(mem + 0x18); /* Read the SMI enables */ iounmap(mem); /* Map bits 0:1 * 0x20 + 0x200 = sb base 2 sb enable 3 adlib enable 5 MPU enable 0x330 6 MPU enable 0x300 The other bits may be used internally so must be masked */ io = 0x220 + 0x20 * (map & 3); if(map & (1<<2)) printk(KERN_INFO "kahlua: XpressAudio at 0x%lx\n", io); else return 1; if(map & (1<<5)) printk(KERN_INFO "kahlua: MPU at 0x300\n"); else if(map & (1<<6)) printk(KERN_INFO "kahlua: MPU at 0x330\n"); irq = mixer_read(io, 0x80) & 0x0F; dma8 = mixer_read(io, 0x81); // printk("IRQ=%x MAP=%x DMA=%x\n", irq, map, dma8); if(dma8 & 0x20) dma16 = 5; else if(dma8 & 0x40) dma16 = 6; else if(dma8 & 0x80) dma16 = 7; else { printk(KERN_ERR "kahlua: No 16bit DMA enabled.\n"); return 1; } if(dma8 & 0x01) dma8 = 0; else if(dma8 & 0x02) dma8 = 1; else if(dma8 & 0x08) dma8 = 3; else { printk(KERN_ERR "kahlua: No 8bit DMA enabled.\n"); return 1; } if(irq & 1) irq = 9; else if(irq & 2) irq = 5; else if(irq & 4) irq = 7; else if(irq & 8) irq = 10; else { printk(KERN_ERR "kahlua: SB IRQ not set.\n"); return 1; } printk(KERN_INFO "kahlua: XpressAudio on IRQ %d, DMA %d, %d\n", irq, dma8, dma16); hw_config = kzalloc(sizeof(struct address_info), GFP_KERNEL); if(hw_config == NULL) { printk(KERN_ERR "kahlua: out of memory.\n"); return 1; } pci_set_drvdata(pdev, hw_config); hw_config->io_base = io; hw_config->irq = irq; hw_config->dma = dma8; hw_config->dma2 = dma16; hw_config->name = "Cyrix XpressAudio"; hw_config->driver_use_1 = SB_NO_MIDI | SB_PCI_IRQ; if (!request_region(io, 16, "soundblaster")) goto err_out_free; if(sb_dsp_detect(hw_config, 0, 0, NULL)==0) { printk(KERN_ERR "kahlua: audio not responding.\n"); release_region(io, 16); goto err_out_free; } oldquiet = sb_be_quiet; sb_be_quiet = 1; if(sb_dsp_init(hw_config, THIS_MODULE)) { sb_be_quiet = oldquiet; goto err_out_free; } sb_be_quiet = oldquiet; return 0; err_out_free: kfree(hw_config); return 1; } static void remove_one(struct pci_dev *pdev) { struct address_info *hw_config = pci_get_drvdata(pdev); sb_dsp_unload(hw_config, 0); kfree(hw_config); } MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("Kahlua VSA1 PCI Audio"); MODULE_LICENSE("GPL"); /* * 5530 only. The 5510/5520 decode is different. */ static const struct pci_device_id id_tbl[] = { { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO), 0 }, { } }; MODULE_DEVICE_TABLE(pci, id_tbl); static struct pci_driver kahlua_driver = { .name = "kahlua", .id_table = id_tbl, .probe = probe_one, .remove = remove_one, }; static int __init kahlua_init_module(void) { printk(KERN_INFO "Cyrix Kahlua VSA1 XpressAudio support (c) Copyright 2003 Red Hat Inc\n"); return pci_register_driver(&kahlua_driver); } static void kahlua_cleanup_module(void) { pci_unregister_driver(&kahlua_driver); } module_init(kahlua_init_module); module_exit(kahlua_cleanup_module); trdma?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>patch) tree55703c2ea8584e303e342090614e0aab3509ab21 /net/sunrpc/xprtrdma parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/sunrpc/xprtrdma')