462008473e
- kvm-hw-s390x-ipl-Provide-more-memory-to-the-s390-ccw.img.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Use-the-libc-from-SLOF-and-remove-s.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Link-the-netboot-code-into-the-main.patch [RHEL-11424] - kvm-redhat-Remove-the-s390-netboot.img-from-the-spec-fil.patch [RHEL-11424] - kvm-hw-s390x-Remove-the-possibility-to-load-the-s390-net.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Merge-netboot.mak-into-the-main-Mak.patch [RHEL-11424] - kvm-docs-system-s390x-bootdevices-Update-the-documentati.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Remove-panics-from-ISO-IPL-path.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Remove-panics-from-ECKD-IPL-path.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Remove-panics-from-SCSI-IPL-path.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Remove-panics-from-DASD-IPL-path.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Remove-panics-from-Netboot-IPL-path.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Enable-failed-IPL-to-return-after-e.patch [RHEL-11424] - kvm-include-hw-s390x-Add-include-files-for-common-IPL-st.patch [RHEL-11424] - kvm-s390x-Add-individual-loadparm-assignment-to-CCW-devi.patch [RHEL-11424] - kvm-hw-s390x-Build-an-IPLB-for-each-boot-device.patch [RHEL-11424] - kvm-s390x-Rebuild-IPLB-for-SCSI-device-directly-from-DIA.patch [RHEL-11424] - kvm-pc-bios-s390x-Enable-multi-device-boot-loop.patch [RHEL-11424] - kvm-docs-system-Update-documentation-for-s390x-IPL.patch [RHEL-11424] - kvm-tests-qtest-Add-s390x-boot-order-tests-to-cdrom-test.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Clarify-alignment-is-in-bytes.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Don-t-generate-TEXTRELs.patch [RHEL-11424] - kvm-pc-bios-s390-ccw-Introduce-EXTRA_LDFLAGS.patch [RHEL-11424] - kvm-vfio-migration-Report-only-stop-copy-size-in-vfio_st.patch [RHEL-64307] - kvm-vfio-migration-Change-trace-formats-from-hex-to-deci.patch [RHEL-64307] - kvm-kvm-Allow-kvm_arch_get-put_registers-to-accept-Error.patch [RHEL-60914] - kvm-target-i386-kvm-Report-which-action-failed-in-kvm_ar.patch [RHEL-60914] - Resolves: RHEL-11424 ([IBM 9.6 FEAT] KVM: Full boot order support - qemu part) - Resolves: RHEL-64307 (High threshold value observed in vGPU live migration) - Resolves: RHEL-60914 (Fail migration properly when put cpu register fails)
427 lines
14 KiB
Diff
427 lines
14 KiB
Diff
From 41a56360a0f4124252180132e28c166792ee8853 Mon Sep 17 00:00:00 2001
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From: Jared Rossi <jrossi@linux.ibm.com>
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Date: Sat, 19 Oct 2024 21:29:46 -0400
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Subject: [PATCH 13/27] pc-bios/s390-ccw: Enable failed IPL to return after
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error
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Thomas Huth <thuth@redhat.com>
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RH-MergeRequest: 277: Full boot order support for s390x [CentOS 9]
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RH-Jira: RHEL-11424
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RH-Acked-by: Cédric Le Goater <clg@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [13/23] c86e8a72a631081348e88ac1df99c2eec8ca27dd (thuth/qemu-kvm-cs9)
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Remove panic-on-error from IPL functions such that a return code is propagated
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back to the main IPL calling function (rather than terminating immediately),
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which facilitates possible error recovery in the future.
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A select few panics remain, which indicate fatal non-devices errors that must
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result in termination.
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Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Message-ID: <20241020012953.1380075-13-jrossi@linux.ibm.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry picked from commit 0181e23713114fd4c33326c3372aaf48dcfb412a)
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---
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pc-bios/s390-ccw/bootmap.c | 53 ++++++++++++++++++--------
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pc-bios/s390-ccw/cio.c | 3 +-
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pc-bios/s390-ccw/jump2ipl.c | 5 ++-
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pc-bios/s390-ccw/main.c | 32 +++++++++-------
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pc-bios/s390-ccw/s390-ccw.h | 2 +-
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pc-bios/s390-ccw/virtio-blkdev.c | 2 +-
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pc-bios/s390-ccw/virtio.c | 65 +++++++++++++++++++++-----------
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pc-bios/s390-ccw/virtio.h | 2 +-
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8 files changed, 108 insertions(+), 56 deletions(-)
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diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
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index 95ef9104d0..56f2f75640 100644
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--- a/pc-bios/s390-ccw/bootmap.c
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+++ b/pc-bios/s390-ccw/bootmap.c
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@@ -62,15 +62,34 @@ static void *s2_prev_blk = _s2;
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static void *s2_cur_blk = _s2 + MAX_SECTOR_SIZE;
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static void *s2_next_blk = _s2 + MAX_SECTOR_SIZE * 2;
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-static inline void verify_boot_info(BootInfo *bip)
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+static inline int verify_boot_info(BootInfo *bip)
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{
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- IPL_assert(magic_match(bip->magic, ZIPL_MAGIC), "No zIPL sig in BootInfo");
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- IPL_assert(bip->version == BOOT_INFO_VERSION, "Wrong zIPL version");
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- IPL_assert(bip->bp_type == BOOT_INFO_BP_TYPE_IPL, "DASD is not for IPL");
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- IPL_assert(bip->dev_type == BOOT_INFO_DEV_TYPE_ECKD, "DASD is not ECKD");
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- IPL_assert(bip->flags == BOOT_INFO_FLAGS_ARCH, "Not for this arch");
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- IPL_assert(block_size_ok(bip->bp.ipl.bm_ptr.eckd.bptr.size),
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- "Bad block size in zIPL section of the 1st record.");
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+ if (!magic_match(bip->magic, ZIPL_MAGIC)) {
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+ puts("No zIPL sig in BootInfo");
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+ return -EINVAL;
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+ }
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+ if (bip->version != BOOT_INFO_VERSION) {
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+ puts("Wrong zIPL version");
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+ return -EINVAL;
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+ }
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+ if (bip->bp_type != BOOT_INFO_BP_TYPE_IPL) {
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+ puts("DASD is not for IPL");
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+ return -ENODEV;
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+ }
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+ if (bip->dev_type != BOOT_INFO_DEV_TYPE_ECKD) {
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+ puts("DASD is not ECKD");
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+ return -ENODEV;
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+ }
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+ if (bip->flags != BOOT_INFO_FLAGS_ARCH) {
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+ puts("Not for this arch");
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+ return -EINVAL;
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+ }
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+ if (!block_size_ok(bip->bp.ipl.bm_ptr.eckd.bptr.size)) {
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+ puts("Bad block size in zIPL section of 1st record");
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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}
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static void eckd_format_chs(ExtEckdBlockPtr *ptr, bool ldipl,
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@@ -367,8 +386,8 @@ static int run_eckd_boot_script(block_number_t bmt_block_nr,
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puts("Unknown script entry type");
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return -EINVAL;
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}
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- write_reset_psw(bms->entry[i].address.load_address); /* no return */
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- jump_to_IPL_code(0); /* no return */
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+ write_reset_psw(bms->entry[i].address.load_address);
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+ jump_to_IPL_code(0);
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return -1;
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}
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@@ -1067,16 +1086,19 @@ void zipl_load(void)
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if (vdev->is_cdrom) {
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ipl_iso_el_torito();
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- panic("\n! Cannot IPL this ISO image !\n");
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+ puts("Failed to IPL this ISO image!");
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+ return;
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}
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if (virtio_get_device_type() == VIRTIO_ID_NET) {
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netmain();
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- panic("\n! Cannot IPL from this network !\n");
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+ puts("Failed to IPL from this network!");
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+ return;
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}
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if (ipl_scsi()) {
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- panic("\n! Cannot IPL this SCSI device !\n");
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+ puts("Failed to IPL from this SCSI device!");
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+ return;
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}
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switch (virtio_get_device_type()) {
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@@ -1087,8 +1109,9 @@ void zipl_load(void)
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zipl_load_vscsi();
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break;
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default:
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- panic("\n! Unknown IPL device type !\n");
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+ puts("Unknown IPL device type!");
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+ return;
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}
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- puts("zIPL load failed.");
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+ puts("zIPL load failed!");
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}
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diff --git a/pc-bios/s390-ccw/cio.c b/pc-bios/s390-ccw/cio.c
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index 7b09a38c96..5d543da73f 100644
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--- a/pc-bios/s390-ccw/cio.c
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+++ b/pc-bios/s390-ccw/cio.c
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@@ -59,7 +59,8 @@ uint16_t cu_type(SubChannelId schid)
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};
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if (do_cio(schid, CU_TYPE_UNKNOWN, ptr2u32(&sense_id_ccw), CCW_FMT1)) {
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- panic("Failed to run SenseID CCw\n");
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+ puts("Failed to run SenseID CCW");
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+ return CU_TYPE_UNKNOWN;
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}
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return sense_data.cu_type;
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diff --git a/pc-bios/s390-ccw/jump2ipl.c b/pc-bios/s390-ccw/jump2ipl.c
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index 80b7f6a1f3..8db1764ff3 100644
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--- a/pc-bios/s390-ccw/jump2ipl.c
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+++ b/pc-bios/s390-ccw/jump2ipl.c
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@@ -33,7 +33,7 @@ static void jump_to_IPL_addr(void)
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/* should not return */
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}
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-void jump_to_IPL_code(uint64_t address)
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+int jump_to_IPL_code(uint64_t address)
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{
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/* store the subsystem information _after_ the bootmap was loaded */
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write_subsystem_identification();
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@@ -68,7 +68,8 @@ void jump_to_IPL_code(uint64_t address)
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asm volatile("lghi %%r1,1\n\t"
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"diag %%r1,%%r1,0x308\n\t"
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: : : "1", "memory");
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- panic("\n! IPL returns !\n");
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+ puts("IPL code jump failed");
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+ return -1;
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}
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void jump_to_low_kernel(void)
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diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
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index fc44da3161..34ef27d7a6 100644
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--- a/pc-bios/s390-ccw/main.c
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+++ b/pc-bios/s390-ccw/main.c
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@@ -77,6 +77,9 @@ static int is_dev_possibly_bootable(int dev_no, int sch_no)
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enable_subchannel(blk_schid);
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cutype = cu_type(blk_schid);
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+ if (cutype == CU_TYPE_UNKNOWN) {
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+ return -EIO;
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+ }
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/*
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* Note: we always have to run virtio_is_supported() here to make
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@@ -194,10 +197,10 @@ static void boot_setup(void)
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have_iplb = store_iplb(&iplb);
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}
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-static void find_boot_device(void)
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+static bool find_boot_device(void)
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{
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VDev *vdev = virtio_get_device();
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- bool found;
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+ bool found = false;
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switch (iplb.pbt) {
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case S390_IPL_TYPE_CCW:
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@@ -215,10 +218,10 @@ static void find_boot_device(void)
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found = find_subch(iplb.scsi.devno);
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break;
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default:
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- panic("List-directed IPL not supported yet!\n");
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+ puts("Unsupported IPLB");
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}
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- IPL_assert(found, "Boot device not found\n");
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+ return found;
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}
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static int virtio_setup(void)
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@@ -244,11 +247,13 @@ static int virtio_setup(void)
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ret = virtio_scsi_setup_device(blk_schid);
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break;
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default:
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- panic("\n! No IPL device available !\n");
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+ puts("\n! No IPL device available !\n");
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+ return -1;
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}
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- if (!ret) {
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- IPL_assert(virtio_ipl_disk_is_valid(), "No valid IPL device detected");
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+ if (!ret && !virtio_ipl_disk_is_valid()) {
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+ puts("No valid IPL device detected");
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+ return -ENODEV;
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}
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return ret;
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@@ -259,16 +264,16 @@ static void ipl_boot_device(void)
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switch (cutype) {
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case CU_TYPE_DASD_3990:
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case CU_TYPE_DASD_2107:
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- dasd_ipl(blk_schid, cutype); /* no return */
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+ dasd_ipl(blk_schid, cutype);
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break;
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case CU_TYPE_VIRTIO:
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- if (virtio_setup() == 0) {
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- zipl_load(); /* Only returns in case of errors */
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+ if (virtio_setup()) {
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+ return; /* Only returns in case of errors */
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}
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+ zipl_load();
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break;
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default:
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printf("Attempting to boot from unexpected device type 0x%X\n", cutype);
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- panic("\nBoot failed.\n");
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}
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}
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@@ -301,12 +306,11 @@ void main(void)
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sclp_setup();
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css_setup();
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boot_setup();
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- if (have_iplb) {
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- find_boot_device();
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+ if (have_iplb && find_boot_device()) {
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ipl_boot_device();
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} else {
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probe_boot_device();
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}
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- panic("Failed to load OS from hard disk\n");
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+ panic("Failed to IPL. Halting...");
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}
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diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
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index 344ad15655..6cdce3e5e5 100644
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--- a/pc-bios/s390-ccw/s390-ccw.h
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+++ b/pc-bios/s390-ccw/s390-ccw.h
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@@ -78,7 +78,7 @@ void zipl_load(void);
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/* jump2ipl.c */
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void write_reset_psw(uint64_t psw);
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-void jump_to_IPL_code(uint64_t address);
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+int jump_to_IPL_code(uint64_t address);
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void jump_to_low_kernel(void);
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/* menu.c */
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diff --git a/pc-bios/s390-ccw/virtio-blkdev.c b/pc-bios/s390-ccw/virtio-blkdev.c
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index 1c585f034b..7b2d1e20f4 100644
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--- a/pc-bios/s390-ccw/virtio-blkdev.c
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+++ b/pc-bios/s390-ccw/virtio-blkdev.c
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@@ -59,7 +59,7 @@ int virtio_read_many(unsigned long sector, void *load_addr, int sec_num)
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case VIRTIO_ID_SCSI:
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return virtio_scsi_read_many(vdev, sector, load_addr, sec_num);
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}
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- panic("\n! No readable IPL device !\n");
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+
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return -1;
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}
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diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
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index 8c6b0a8a92..8b5a370bb3 100644
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--- a/pc-bios/s390-ccw/virtio.c
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+++ b/pc-bios/s390-ccw/virtio.c
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@@ -217,16 +217,19 @@ int virtio_run(VDev *vdev, int vqid, VirtioCmd *cmd)
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return 0;
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}
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-void virtio_setup_ccw(VDev *vdev)
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+int virtio_setup_ccw(VDev *vdev)
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{
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- int i, rc, cfg_size = 0;
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+ int i, cfg_size = 0;
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uint8_t status;
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struct VirtioFeatureDesc {
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uint32_t features;
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uint8_t index;
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} __attribute__((packed)) feats;
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- IPL_assert(virtio_is_supported(vdev->schid), "PE");
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+ if (!virtio_is_supported(vdev->schid)) {
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+ puts("Virtio unsupported for this device ID");
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+ return -ENODEV;
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+ }
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/* device ID has been established now */
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vdev->config.blk.blk_size = 0; /* mark "illegal" - setup started... */
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@@ -235,8 +238,10 @@ void virtio_setup_ccw(VDev *vdev)
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run_ccw(vdev, CCW_CMD_VDEV_RESET, NULL, 0, false);
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status = VIRTIO_CONFIG_S_ACKNOWLEDGE;
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- rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
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- IPL_assert(rc == 0, "Could not write ACKNOWLEDGE status to host");
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+ if (run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false)) {
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+ puts("Could not write ACKNOWLEDGE status to host");
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+ return -EIO;
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+ }
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switch (vdev->senseid.cu_model) {
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case VIRTIO_ID_NET:
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@@ -255,27 +260,37 @@ void virtio_setup_ccw(VDev *vdev)
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cfg_size = sizeof(vdev->config.scsi);
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break;
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default:
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- panic("Unsupported virtio device\n");
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+ puts("Unsupported virtio device");
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+ return -ENODEV;
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}
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status |= VIRTIO_CONFIG_S_DRIVER;
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- rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
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- IPL_assert(rc == 0, "Could not write DRIVER status to host");
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+ if (run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false)) {
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+ puts("Could not write DRIVER status to host");
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+ return -EIO;
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+ }
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/* Feature negotiation */
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for (i = 0; i < ARRAY_SIZE(vdev->guest_features); i++) {
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feats.features = 0;
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feats.index = i;
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- rc = run_ccw(vdev, CCW_CMD_READ_FEAT, &feats, sizeof(feats), false);
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- IPL_assert(rc == 0, "Could not get features bits");
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+ if (run_ccw(vdev, CCW_CMD_READ_FEAT, &feats, sizeof(feats), false)) {
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+ puts("Could not get features bits");
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+ return -EIO;
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+ }
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+
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vdev->guest_features[i] &= bswap32(feats.features);
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feats.features = bswap32(vdev->guest_features[i]);
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- rc = run_ccw(vdev, CCW_CMD_WRITE_FEAT, &feats, sizeof(feats), false);
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- IPL_assert(rc == 0, "Could not set features bits");
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+ if (run_ccw(vdev, CCW_CMD_WRITE_FEAT, &feats, sizeof(feats), false)) {
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+ puts("Could not set features bits");
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+ return -EIO;
|
|
+ }
|
|
}
|
|
|
|
- rc = run_ccw(vdev, CCW_CMD_READ_CONF, &vdev->config, cfg_size, false);
|
|
- IPL_assert(rc == 0, "Could not get virtio device configuration");
|
|
+ if (run_ccw(vdev, CCW_CMD_READ_CONF, &vdev->config, cfg_size, false)) {
|
|
+ puts("Could not get virtio device configuration");
|
|
+ return -EIO;
|
|
+ }
|
|
|
|
for (i = 0; i < vdev->nr_vqs; i++) {
|
|
VqInfo info = {
|
|
@@ -289,19 +304,27 @@ void virtio_setup_ccw(VDev *vdev)
|
|
.num = 0,
|
|
};
|
|
|
|
- rc = run_ccw(vdev, CCW_CMD_READ_VQ_CONF, &config, sizeof(config), false);
|
|
- IPL_assert(rc == 0, "Could not get virtio device VQ configuration");
|
|
+ if (run_ccw(vdev, CCW_CMD_READ_VQ_CONF, &config, sizeof(config),
|
|
+ false)) {
|
|
+ puts("Could not get virtio device VQ config");
|
|
+ return -EIO;
|
|
+ }
|
|
info.num = config.num;
|
|
vring_init(&vdev->vrings[i], &info);
|
|
vdev->vrings[i].schid = vdev->schid;
|
|
- IPL_assert(
|
|
- run_ccw(vdev, CCW_CMD_SET_VQ, &info, sizeof(info), false) == 0,
|
|
- "Cannot set VQ info");
|
|
+ if (run_ccw(vdev, CCW_CMD_SET_VQ, &info, sizeof(info), false)) {
|
|
+ puts("Cannot set VQ info");
|
|
+ return -EIO;
|
|
+ }
|
|
}
|
|
|
|
status |= VIRTIO_CONFIG_S_DRIVER_OK;
|
|
- rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
|
|
- IPL_assert(rc == 0, "Could not write DRIVER_OK status to host");
|
|
+ if (run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false)) {
|
|
+ puts("Could not write DRIVER_OK status to host");
|
|
+ return -EIO;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
}
|
|
|
|
bool virtio_is_supported(SubChannelId schid)
|
|
diff --git a/pc-bios/s390-ccw/virtio.h b/pc-bios/s390-ccw/virtio.h
|
|
index 6f9a558ff5..9faf3986b1 100644
|
|
--- a/pc-bios/s390-ccw/virtio.h
|
|
+++ b/pc-bios/s390-ccw/virtio.h
|
|
@@ -274,7 +274,7 @@ void vring_send_buf(VRing *vr, void *p, int len, int flags);
|
|
int vr_poll(VRing *vr);
|
|
int vring_wait_reply(void);
|
|
int virtio_run(VDev *vdev, int vqid, VirtioCmd *cmd);
|
|
-void virtio_setup_ccw(VDev *vdev);
|
|
+int virtio_setup_ccw(VDev *vdev);
|
|
|
|
int virtio_net_init(void *mac_addr);
|
|
|
|
--
|
|
2.39.3
|
|
|