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hw/block/nvme: validate command set selected 

Fail to start the controller if the user requests a command set that the
controller does not support.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Keith Busch 2020-09-30 10:54:05 -07:00 committed by Klaus Jensen
parent 2fbbecc5cd
commit 492f9a8d79
3 changed files with 10 additions and 1 deletions
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6
hw/block/nvme.c
View File

@ -2045,6 +2045,10 @@ static int nvme_start_ctrl(NvmeCtrl *n)
trace_pci_nvme_err_startfail_acq_misaligned(n->bar.acq);
return -1;
}
if (unlikely(!(NVME_CAP_CSS(n->bar.cap) & (1 << NVME_CC_CSS(n->bar.cc))))) {
trace_pci_nvme_err_startfail_css(NVME_CC_CSS(n->bar.cc));
return -1;
}
if (unlikely(NVME_CC_MPS(n->bar.cc) <
NVME_CAP_MPSMIN(n->bar.cap))) {
trace_pci_nvme_err_startfail_page_too_small(
@ -2746,7 +2750,7 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev)
NVME_CAP_SET_MQES(n->bar.cap, 0x7ff);
NVME_CAP_SET_CQR(n->bar.cap, 1);
NVME_CAP_SET_TO(n->bar.cap, 0xf);
NVME_CAP_SET_CSS(n->bar.cap, 1);
NVME_CAP_SET_CSS(n->bar.cap, NVME_CAP_CSS_NVM);
NVME_CAP_SET_MPSMAX(n->bar.cap, 4);
n->bar.vs = NVME_SPEC_VER;

1
hw/block/trace-events
View File

@ -132,6 +132,7 @@ pci_nvme_err_startfail_cqent_too_small(uint8_t log2ps, uint8_t maxlog2ps) "nvme_
pci_nvme_err_startfail_cqent_too_large(uint8_t log2ps, uint8_t maxlog2ps) "nvme_start_ctrl failed because the completion queue entry size is too large: log2size=%u, max=%u"
pci_nvme_err_startfail_sqent_too_small(uint8_t log2ps, uint8_t maxlog2ps) "nvme_start_ctrl failed because the submission queue entry size is too small: log2size=%u, min=%u"
pci_nvme_err_startfail_sqent_too_large(uint8_t log2ps, uint8_t maxlog2ps) "nvme_start_ctrl failed because the submission queue entry size is too large: log2size=%u, max=%u"
pci_nvme_err_startfail_css(uint8_t css) "nvme_start_ctrl failed because invalid command set selected:%u"
pci_nvme_err_startfail_asqent_sz_zero(void) "nvme_start_ctrl failed because the admin submission queue size is zero"
pci_nvme_err_startfail_acqent_sz_zero(void) "nvme_start_ctrl failed because the admin completion queue size is zero"
pci_nvme_err_startfail(void) "setting controller enable bit failed"

4
include/block/nvme.h
View File

@ -82,6 +82,10 @@ enum NvmeCapMask {
#define NVME_CAP_SET_PMRS(cap, val) (cap |= (uint64_t)(val & CAP_PMR_MASK)\
<< CAP_PMR_SHIFT)
enum NvmeCapCss {
NVME_CAP_CSS_NVM = 1 << 0,
};
enum NvmeCcShift {
CC_EN_SHIFT = 0,
CC_CSS_SHIFT = 4,