| Age | Commit message (Collapse) | Author | |
|---|---|---|---|
| 2019-07-21 | Merge tag 'ntb-5.3' of git://github.com/jonmason/ntb | Linus Torvalds | |
| Pull NTB updates from Jon Mason: "New feature to add support for NTB virtual MSI interrupts, the ability to test and use this feature in the NTB transport layer. Also, bug fixes for the AMD and Switchtec drivers, as well as some general patches" * tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits) NTB: Describe the ntb_msi_test client in the documentation. NTB: Add MSI interrupt support to ntb_transport NTB: Add ntb_msi_test support to ntb_test NTB: Introduce NTB MSI Test Client NTB: Introduce MSI library NTB: Rename ntb.c to support multiple source files in the module NTB: Introduce functions to calculate multi-port resource index NTB: Introduce helper functions to calculate logical port number PCI/switchtec: Add module parameter to request more interrupts PCI/MSI: Support allocating virtual MSI interrupts ntb_hw_switchtec: Fix setup MW with failure bug ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function NTB: correct ntb_dev_ops and ntb_dev comment typos NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask() ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev() NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed NTB: ntb_hw_amd: set peer limit register NTB: ntb_perf: Clear stale values in doorbell and command SPAD register NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers ... | |||
| 2019-06-13 | NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask() | Dan Carpenter | |
| This code triggers a Smatch warning: drivers/ntb/hw/amd/ntb_hw_amd.c:336 amd_ntb_db_vector_mask() warn: should '(1 << db_vector)' be a 64 bit type? I don't think "db_vector" can be higher than 16 so this doesn't affect runtime, but it's nice to silence the static checker warning and we might increase "ndev->db_count" in the future. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2019-06-13 | NTB: ntb_hw_amd: set peer limit register | Sanjay R Mehta | |
| As per amd ntb spec it says that peer limit register must be programmed Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com> Acked-by: Allen Hubbe <allenbh@gmail.com> Acked-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2019-05-21 | treewide: Add SPDX license identifier - Makefile/Kconfig | Thomas Gleixner | |
| Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |||
| 2018-06-12 | treewide: kzalloc_node() -> kcalloc_node() | Kees Cook | |
| The kzalloc_node() function has a 2-factor argument form, kcalloc_node(). This patch replaces cases of: kzalloc_node(a * b, gfp, node) with: kcalloc_node(a * b, gfp, node) as well as handling cases of: kzalloc_node(a * b * c, gfp, node) with: kzalloc_node(array3_size(a, b, c), gfp, node) as it's slightly less ugly than: kcalloc_node(array_size(a, b), c, gfp, node) This does, however, attempt to ignore constant size factors like: kzalloc_node(4 * 1024, gfp, node) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc_node( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc_node( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc_node( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(char) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc_node + kcalloc_node ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc_node( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc_node( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc_node( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc_node( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc_node(C1 * C2 * C3, ...) | kzalloc_node( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc_node( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc_node( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc_node( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc_node(sizeof(THING) * C2, ...) | kzalloc_node(sizeof(TYPE) * C2, ...) | kzalloc_node(C1 * C2 * C3, ...) | kzalloc_node(C1 * C2, ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - (E1) * E2 + E1, E2 , ...) | - kzalloc_node + kcalloc_node ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc_node + kcalloc_node ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org> | |||
| 2018-01-28 | NTB: Set dma mask and dma coherent mask to NTB devices | Serge Semin | |
| The dma_mask and dma_coherent_mask fields of the NTB struct device weren't initialized in hardware drivers. In fact it should be done instead of PCIe interface usage, since NTB clients are supposed to use NTB API and left unaware of real hardware implementation. In addition to that ntb_device_register() method shouldn't clear the passed ntb_dev structure, since it dma_mask is initialized by hardware drivers. Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2017-07-06 | ntb_hw_amd: Style fixes: open code macros that just obfuscate code | Logan Gunthorpe | |
| As per a comments in [1] by Greg Kroah-Hartman, the ndev_* macros should be cleaned up. This makes it more clear what's actually going on when reading the code. [1] http://www.spinics.net/lists/linux-pci/msg56904.html Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2017-07-06 | NTB: Alter Scratchpads API to support multi-ports devices | Serge Semin | |
| Even though there is no any real NTB hardware, which would have both more than two ports and Scratchpad registers, it is logically correct to have Scratchpad API accepting a peer port index as well. Intel/AMD drivers utilize Primary and Secondary topology to split Scratchpad between connected root devices. Since port-index API introduced, Intel/AMD NTB hardware drivers can use device port to determine which Scratchpad registers actually belong to local and peer devices. The same approach can be used if some potential hardware in future will be multi-port and have some set of Scratchpads. Here are the brief of changes in the API: ntb_spad_count() - return number of Scratchpads per each port ntb_peer_spad_addr(pidx, sidx) - address of Scratchpad register of the peer device with pidx-index ntb_peer_spad_read(pidx, sidx) - read specified Scratchpad register of the peer with pidx-index ntb_peer_spad_write(pidx, sidx) - write data to Scratchpad register of the peer with pidx-index Since there is hardware which doesn't support Scratchpad registers, the corresponding API methods are now made optional. Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2017-07-06 | NTB: Alter MW API to support multi-ports devices | Serge Semin | |
| Multi-port NTB devices permit to share a memory between all accessible peers. Memory Windows API is altered to correspondingly initialize and map memory windows for such devices: ntb_mw_count(pidx); - number of inbound memory windows, which can be allocated for shared buffer with specified peer device. ntb_mw_get_align(pidx, widx); - get alignment and size restriction parameters to properly allocate inbound memory region. ntb_peer_mw_count(); - get number of outbound memory windows. ntb_peer_mw_get_addr(widx); - get mapping address of an outbound memory window If hardware supports inbound translation configured on the local ntb port: ntb_mw_set_trans(pidx, widx); - set translation address of allocated inbound memory window so a peer device could access it. ntb_mw_clear_trans(pidx, widx); - clear the translation address of an inbound memory window. If hardware supports outbound translation configured on the peer ntb port: ntb_peer_mw_set_trans(pidx, widx); - set translation address of a memory window retrieved from a peer device ntb_peer_mw_clear_trans(pidx, widx); - clear the translation address of an outbound memory window Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2017-07-06 | NTB: Alter link-state API to support multi-port devices | Serge Semin | |
| Multi-port devices permit the NTB connections between multiple domains, so a local device can have NTB link being up with one peer and being down with another. NTB link-state API is appropriately altered to return a bitfield of the link-states between the local device and possible peers. Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2016-12-23 | NTB: Fix 'request_irq()' and 'free_irq()' inconsistancy | Christophe JAILLET | |
| 'request_irq()' and 'free_irq()' should have the same 'dev_id'. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2016-12-23 | NTB: Register and offset values fix for memory window | Shyam Sundar S K | |
| Due to incorrect limit and translation register values, NTB link was going down when the memory window was setup. Made appropriate changes as per spec. Fix limit register values for BAR1, which was overlapping with the BAR23 address. Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2016-12-23 | NTB: add support for hotplug feature | Xiangliang Yu | |
| AMD NTB support hotplug under B2B mode. NTB will trigger link up/down interrupt event when doing plug add/remove, this patch implements the two interrupt event to support B2B hotplug function. Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2016-03-26 | NTB: Remove _addr functions from ntb_hw_amd | Allen Hubbe | |
| Kernel zero day testing warned about address space confusion. A virtual iomem address was used where a physical address is expected. The offending functions implement an optional part of the api, so they are removed. They can be added later, after testing. Fixes: a1b3695820aa490e58915d720a1438069813008b Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Acked-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
| 2016-01-21 | NTB: Add support for AMD PCI-Express Non-Transparent Bridge | Xiangliang Yu | |
| This adds support for AMD's PCI-Express Non-Transparent Bridge (NTB) device on the Zeppelin platform. The driver connnects to the standard NTB sub-system interface, with modification to add hooks for power management in a separate patch. The AMD NTB device has 3 memory windows, 16 doorbell, 16 scratch-pad registers, and supports up to 16 PCIe lanes running a Gen3 speeds. Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Reviewed-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> | |||
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