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s390/tape: fix virtual vs physical address confusion

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Fix virtual vs physical address confusion and use new dma types and helper
functions to allow for type checking. This does not fix a bug since virtual
and physical address spaces are currently the same.

Tested-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-03-07 13:28:20 +01:00
parent 1b2ac5a6d6
commit e8be820134
1 changed files with 8 additions and 4 deletions
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12
drivers/s390/char/tape.h
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@ -305,7 +305,9 @@ tape_ccw_cc(struct ccw1 *ccw, __u8 cmd_code, __u16 memsize, void *cda)
ccw->cmd_code = cmd_code;
ccw->flags = CCW_FLAG_CC;
ccw->count = memsize;
ccw->cda = (__u32)(addr_t) cda;
ccw->cda = 0;
if (cda)
ccw->cda = virt_to_dma32(cda);
return ccw + 1;
}
@ -315,7 +317,9 @@ tape_ccw_end(struct ccw1 *ccw, __u8 cmd_code, __u16 memsize, void *cda)
ccw->cmd_code = cmd_code;
ccw->flags = 0;
ccw->count = memsize;
ccw->cda = (__u32)(addr_t) cda;
ccw->cda = 0;
if (cda)
ccw->cda = virt_to_dma32(cda);
return ccw + 1;
}
@ -325,7 +329,7 @@ tape_ccw_cmd(struct ccw1 *ccw, __u8 cmd_code)
ccw->cmd_code = cmd_code;
ccw->flags = 0;
ccw->count = 0;
ccw->cda = (__u32)(addr_t) &ccw->cmd_code;
ccw->cda = virt_to_dma32(&ccw->cmd_code);
return ccw + 1;
}
@ -336,7 +340,7 @@ tape_ccw_repeat(struct ccw1 *ccw, __u8 cmd_code, int count)
ccw->cmd_code = cmd_code;
ccw->flags = CCW_FLAG_CC;
ccw->count = 0;
ccw->cda = (__u32)(addr_t) &ccw->cmd_code;
ccw->cda = virt_to_dma32(&ccw->cmd_code);
ccw++;
}
return ccw;