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mmccam: Add some aliases for non-mmccam to mmccam transition

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A new tunable is present, kern.cam.sdda.mmcsd_compat to enable
this feature or not (default is enabled)
This commit is contained in:
Emmanuel Vadot 2020-07-24 17:11:14 +00:00
parent ce219ecd93
commit bf2868538e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363479
1 changed files with 11 additions and 0 deletions
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11
sys/cam/mmc/mmc_da.c
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@ -43,6 +43,7 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/endian.h>
#include <sys/taskqueue.h>
#include <sys/lock.h>
@ -186,6 +187,13 @@ static void sdda_init_switch_part(struct cam_periph *periph, union ccb *start_cc
static int mmc_select_card(struct cam_periph *periph, union ccb *ccb, uint32_t rca);
static inline uint32_t mmc_get_sector_size(struct cam_periph *periph) {return MMC_SECTOR_SIZE;}
static SYSCTL_NODE(_kern_cam, OID_AUTO, sdda, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"CAM Direct Access Disk driver");
static int sdda_mmcsd_compat = 1;
SYSCTL_INT(_kern_cam_sdda, OID_AUTO, mmcsd_compat, CTLFLAG_RDTUN,
&sdda_mmcsd_compat, 1, "Enable creation of mmcsd aliases.");
/* TODO: actually issue GET_TRAN_SETTINGS to get R/O status */
static inline bool sdda_get_read_only(struct cam_periph *periph, union ccb *start_ccb)
{
@ -1605,6 +1613,9 @@ sdda_add_part(struct cam_periph *periph, u_int type, const char *name,
part->disk->d_fwsectors = 0;
part->disk->d_fwheads = 0;
if (sdda_mmcsd_compat)
disk_add_alias(part->disk, "mmcsd");
/*
* Acquire a reference to the periph before we register with GEOM.
* We'll release this reference once GEOM calls us back (via