Date: Sun, 01 Apr 2001 01:01:42 +0900 From: WATANABE Kiyoshi <aab10490@pop16.odn.ne.jp> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/26255: [patch] CS4281 driver, fixed power mode problem. Message-ID: <3AC645B6.BD29D9BA@pop16.odn.ne.jp>
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>Number: 26255
>Category: kern
>Synopsis: [patch] CS4281 driver, fixed power mode problem.
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Sat Mar 31 13:50:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: WATANABE Kiyoshi <aab10490@pop16.odn.ne.jp>
>Release: FreeBSD 4.3-RC1 i386
>Organization:
japan
>Environment:
FreeBSD 4.3-RC1 i386
Celeron 700Mhz.
i810 mother board.
CS4281 on board.
>Description:
[patch] CS4281 driver, fixed power mode problem.
>How-To-Repeat:
When boot, cs4281_pci_attach() fails if the power state is not in D0. ( not always )
>Fix:
--- cs4281.c-1.4 Sat Mar 24 23:10:27 2001
+++ cs4281.c Sat Mar 31 19:37:16 2001
@@ -767,8 +767,6 @@
data |= (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCIR_COMMAND, data, 2);
- data = pci_read_config(dev, PCIR_COMMAND, 2);
-
#if __FreeBSD_version > 500000
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
/* Reset the power state. */
@@ -776,6 +774,18 @@
"-- setting to D0\n", pci_get_powerstate(dev));
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
+ }
+#else
+
+#define CS4281PCI_PMCS_OFFSET (CS4281PCI_PMCS - 0x300)
+
+ data = pci_read_config(dev, CS4281PCI_PMCS_OFFSET, 4);
+ if (data & CS4281PCI_PMCS_PS_MASK) {
+ /* Reset the power state. */
+ device_printf(dev, "chip is in D%d power mode "
+ "-- setting to D0\n", data & CS4281PCI_PMCS_PS_MASK);
+ pci_write_config(dev, CS4281PCI_PMCS_OFFSET,
+ data & ~CS4281PCI_PMCS_PS_MASK, 4);
}
#endif
sc->regid = PCIR_MAPS;
>Release-Note:
>Audit-Trail:
>Unformatted:
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