Date: Sun, 06 Jan 2019 19:18:14 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 234657] AMD Opteron X3000 series CPU temperature sensor support Message-ID: <bug-234657-227-lHBVVNrUaF@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-234657-227@https.bugs.freebsd.org/bugzilla/> References: <bug-234657-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234657 Conrad Meyer <cem@freebsd.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|Open |In Progress Version|11.2-STABLE |CURRENT Assignee|bugs@FreeBSD.org |cem@freebsd.org CC|cem@freebsd.org | --- Comment #1 from Conrad Meyer <cem@freebsd.org> --- I think I understand where the device=0x1573 guess is coming from. Family 15h Model 60h BKDG documents 0x1573 as the deviceid for PCI D18F3. On the earlier Model *00h*, which we currently support, the PCI D18F3 device register 0xa4 is the Reported Temperature. However, on Model *60h*, Reported Temperature lives in a different register, "D0F0xBC_xD820_0CA4" (page 238 of the relevant BKDG below). So I suspect 0x1573 is wrong. https://www.amd.com/system/files/TechDocs/50742_15h_Models_60h-6Fh_BKDG.pdf D0F0 (PCI Root complex) on 60h has the vendor:device id 0x1022:0x1576. It seems like Family 15h Model 60h also requires indirect SMU / SMN access (p. 233), like on Family 17h: > D0F0xB8 SMU Index Address > The index/data pair registers, D0F0xB8 and D0F0xBC, are used to access the registers at > D0F0xBC_x[FFFF_FFFF:0000_0000]. To access any of these registers, the address is first written into the > index register, D0F0xB8, and then the data is read from or written to the data register, D0F0xBC. 0xB8 is the 32-bit register NbSmuIndAddr. 0xBC is the 32-bit register NbSmuIndData. So we must indirectly access the index "0xD820_0CA4" to read the temperature on 15h, model 60h. I'm going to do a quick spot check of other 15h BKDGs to see what other models specify. -- You are receiving this mail because: You are the assignee for the bug.help
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