crypto: hisilicon/qm - save capability registers in qm init process

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7BANJ


CVE: NA

----------------------------------------------------------------------

We find that in the reset scenario, if the reset failed and the MSE
is disabled, the value of capability registers will became invalid.
When we remove the device under this situation, the unregister process
will read the related irq vector from the capability register directly
with the mask. Then we will get an invalid value which is out of range
and can not be used to get the right irq number by pci_irq_vector().
This will cause the following call trace:

	| Call trace:
	|  pci_irq_vector+0xfc/0x140
	|  hisi_qm_uninit+0x278/0x3b0 [hisi_qm]
	|  hpre_remove+0x16c/0x1c0 [hisi_hpre]
	|  pci_device_remove+0x6c/0x264
	|  device_release_driver_internal+0x1ec/0x3e0
	|  device_release_driver+0x3c/0x60
	|  pci_stop_bus_device+0xfc/0x22c
	|  pci_stop_and_remove_bus_device+0x38/0x70
	|  pci_iov_remove_virtfn+0x108/0x1c0
	|  sriov_disable+0x7c/0x1e4
	|  pci_disable_sriov+0x4c/0x6c
	|  hisi_qm_sriov_disable+0x90/0x160 [hisi_qm]
	|  hpre_remove+0x1a8/0x1c0 [hisi_hpre]
	|  pci_device_remove+0x6c/0x264
	|  device_release_driver_internal+0x1ec/0x3e0
	|  driver_detach+0x168/0x2d0
	|  bus_remove_driver+0xc0/0x230
	|  driver_unregister+0x58/0xdc
	|  pci_unregister_driver+0x40/0x220
	|  hpre_exit+0x34/0x64 [hisi_hpre]
	|  __arm64_sys_delete_module+0x374/0x620
	[...]

	| Call trace:
	|  free_msi_irqs+0x25c/0x300
	|  pci_disable_msi+0x19c/0x264
	|  pci_free_irq_vectors+0x4c/0x70
	|  hisi_qm_pci_uninit+0x44/0x90 [hisi_qm]
	|  hisi_qm_uninit+0x28c/0x3b0 [hisi_qm]
	|  hpre_remove+0x16c/0x1c0 [hisi_hpre]
	|  pci_device_remove+0x6c/0x264
	[...]
So we pre-store the valid value of the capability register to a global
array in qm init process, and read the register value from this array
when we need it. This ensures we can always get valid values.

Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com>
Signed-off-by: JiangShui Yang <yangjiangshui@h-partners.com>