Charles Chiou <ch1102ch...@gmail.com> writes: > From 7d98f8c500de452277e2700a950b23bf4685ed64 Mon Sep 17 00:00:00 2001 > From: Charles <charles.ch...@tw.promise.com> > Date: Wed, 2 Sep 2015 20:54:45 +0800 > Subject: [PATCH 3/3] scsi:stex.c Add S3/S4 support > > Add S3/S4 support, add .suspend and .resume function in pci_driver. > In .suspend handler, driver send S3/S4 signal to the device. > > Signed-off-by: Charles Chiou <charles.ch...@tw.promise.com> > --- > drivers/scsi/stex.c | 65 > ++++++++++++++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 62 insertions(+), 3 deletions(-) > > diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c > index 6578f3d..45482d5 100644 > --- a/drivers/scsi/stex.c > +++ b/drivers/scsi/stex.c > @@ -166,6 +166,13 @@ enum { > > ST_ADDITIONAL_MEM = 0x200000, > ST_ADDITIONAL_MEM_MIN = 0x80000, > + PMIC_SHUTDOWN = 0x0D, > + PMIC_REUMSE = 0x10, > + ST_IGNORED = -1, > + ST_S3 = 3, > + ST_S4 = 4, > + ST_S5 = 5, > + ST_S6 = 6, > }; > > struct st_sgitem { > @@ -360,6 +367,8 @@ static const char console_inq_page[] = > 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20 > }; > > + > +
Same as with 1/1 > MODULE_AUTHOR("Ed Lin"); > MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); > MODULE_LICENSE("GPL"); > @@ -1359,6 +1368,9 @@ static void stex_reset_work(struct work_struct *work) > stex_do_reset(hba); > } > > + > + > + Again > static int stex_biosparam(struct scsi_device *sdev, > struct block_device *bdev, sector_t capacity, int geom[]) > { > @@ -1736,7 +1748,7 @@ out_disable: > return err; > } > > -static void stex_hba_stop(struct st_hba *hba) > +static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic) > { > struct req_msg *req; > struct st_msg_header *msg_h; > @@ -1752,11 +1764,18 @@ static void stex_hba_stop(struct st_hba *hba) > } else > memset(req, 0, hba->rq_size); > > - if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) { > + if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel) > + && st_sleep_mic == ST_IGNORED) { > req->cdb[0] = MGT_CMD; > req->cdb[1] = MGT_CMD_SIGNATURE; > req->cdb[2] = CTLR_CONFIG_CMD; > req->cdb[3] = CTLR_SHUTDOWN; > + } else if (hba->cardtype == st_yel && st_sleep_mic != ST_IGNORED) { > + req->cdb[0] = MGT_CMD; > + req->cdb[1] = MGT_CMD_SIGNATURE; > + req->cdb[2] = CTLR_CONFIG_CMD; > + req->cdb[3] = PMIC_SHUTDOWN; > + req->cdb[4] = st_sleep_mic; > } else { > req->cdb[0] = CONTROLLER_CMD; > req->cdb[1] = CTLR_POWER_STATE_CHANGE; > @@ -1776,10 +1795,12 @@ static void stex_hba_stop(struct st_hba *hba) > while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) { > if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { > hba->ccb[tag].req_type = 0; > + hba->mu_status = MU_STATE_STOP; > return; > } > msleep(1); > } > + hba->mu_status = MU_STATE_STOP; > } > > static void stex_hba_free(struct st_hba *hba) > @@ -1819,9 +1840,45 @@ static void stex_shutdown(struct pci_dev *pdev) > { > struct st_hba *hba = pci_get_drvdata(pdev); > > - stex_hba_stop(hba); > + if (hba->supports_pm == 0) > + stex_hba_stop(hba, ST_IGNORED); > + else > + stex_hba_stop(hba, ST_S5); > +} > + > +static int stex_choice_sleep_mic(pm_message_t state) > +{ > + switch (state.event) { > + case PM_EVENT_SUSPEND: > + return ST_S3; > + case PM_EVENT_FREEZE: > + case PM_EVENT_HIBERNATE: > + return ST_S4; > + default: > + return ST_S4; > + } > +} > + > +static int stex_suspend(struct pci_dev *pdev, pm_message_t state) > +{ > + struct st_hba *hba = pci_get_drvdata(pdev); > + > + if (hba->cardtype == st_yel && hba->supports_pm == 1) > + stex_hba_stop(hba, stex_choice_sleep_mic(state)); > + else > + stex_hba_stop(hba, ST_IGNORED); > + return 0; > } > > + > +static int stex_resume(struct pci_dev *pdev) > +{ > + struct st_hba *hba = pci_get_drvdata(pdev); > + > + hba->mu_status = MU_STATE_STARTING; > + stex_handshake(hba); > + return 0; > +} > MODULE_DEVICE_TABLE(pci, stex_pci_tbl); > > static struct pci_driver stex_pci_driver = { > @@ -1830,6 +1887,8 @@ static struct pci_driver stex_pci_driver = { > .probe = stex_probe, > .remove = stex_remove, > .shutdown = stex_shutdown, > + .suspend = stex_suspend, > + .resume = stex_resume, > }; > > static int __init stex_init(void) -- Johannes Thumshirn Storage jthumsh...@suse.de +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/