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| author | Mattias Nissler <mnissler@rivosinc.com> | 2023-09-07 06:04:23 -0700 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-05-08 19:43:23 +0200 |
| commit | 5c62719710bab66a98f68ebdba333e2240ed6668 (patch) | |
| tree | c22b19340c29987b1b9b653888815c370909d236 /include/exec/memory.h | |
| parent | d5e268197aa2ba89bc0540717c72be2c69568b62 (diff) | |
| download | focaccia-qemu-5c62719710bab66a98f68ebdba333e2240ed6668.tar.gz focaccia-qemu-5c62719710bab66a98f68ebdba333e2240ed6668.zip | |
system/physmem: Propagate AddressSpace to MapClient helpers
Propagate AddressSpace handler to following helpers: - register_map_client() - unregister_map_client() - notify_map_clients[_locked]() Rename them using 'address_space_' prefix instead of 'cpu_'. The AddressSpace argument will be used in the next commit. Reviewed-by: Peter Xu <peterx@redhat.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mattias Nissler <mnissler@rivosinc.com> Message-ID: <20240507094210.300566-2-mnissler@rivosinc.com> [PMD: Split patch, part 1/2] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index dadb5cd65a..e1e0c5a3de 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2946,8 +2946,8 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr, hwaddr len, * May return %NULL and set *@plen to zero(0), if resources needed to perform * the mapping are exhausted. * Use only for reads OR writes - not for read-modify-write operations. - * Use cpu_register_map_client() to know when retrying the map operation is - * likely to succeed. + * Use address_space_register_map_client() to know when retrying the map + * operation is likely to succeed. * * @as: #AddressSpace to be accessed * @addr: address within that address space @@ -2972,6 +2972,28 @@ void *address_space_map(AddressSpace *as, hwaddr addr, void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, bool is_write, hwaddr access_len); +/* + * address_space_register_map_client: Register a callback to invoke when + * resources for address_space_map() are available again. + * + * address_space_map may fail when there are not enough resources available, + * such as when bounce buffer memory would exceed the limit. The callback can + * be used to retry the address_space_map operation. Note that the callback + * gets automatically removed after firing. + * + * @as: #AddressSpace to be accessed + * @bh: callback to invoke when address_space_map() retry is appropriate + */ +void address_space_register_map_client(AddressSpace *as, QEMUBH *bh); + +/* + * address_space_unregister_map_client: Unregister a callback that has + * previously been registered and not fired yet. + * + * @as: #AddressSpace to be accessed + * @bh: callback to unregister + */ +void address_space_unregister_map_client(AddressSpace *as, QEMUBH *bh); /* Internal functions, part of the implementation of address_space_read. */ MemTxResult address_space_read_full(AddressSpace *as, hwaddr addr, |