Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13, v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8, v6.1.7, v6.1.6, v6.1.5, v6.0.19, v6.0.18, v6.1.4, v6.1.3, v6.0.17, v6.1.2, v6.0.16, v6.1.1, v6.0.15, v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71, v5.15.70, v5.15.69, v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64, v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51, v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34 |
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#
c127d130 |
| 09-Apr-2022 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and this function is called to initialize registers for receive and
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and this function is called to initialize registers for receive and fault windows. But the real address is passed in winctx->rx_fifo for receive windows and the virtual address for fault windows which causes errors with DEBUG_VIRTUAL enabled. Fixes this issue by assigning only real address to rx_fifo in vas_rx_win_attr struct for both receive and fault windows.
Reported-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/338e958c7ab8f3b266fa794a1f80f99b9671829e.camel@linux.ibm.com
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#
ce29ea35 |
| 09-Apr-2022 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
[ Upstream commit c127d130f6d59fa81701f6b04023cf7cd1972fb3 ]
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and th
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
[ Upstream commit c127d130f6d59fa81701f6b04023cf7cd1972fb3 ]
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and this function is called to initialize registers for receive and fault windows. But the real address is passed in winctx->rx_fifo for receive windows and the virtual address for fault windows which causes errors with DEBUG_VIRTUAL enabled. Fixes this issue by assigning only real address to rx_fifo in vas_rx_win_attr struct for both receive and fault windows.
Reported-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/338e958c7ab8f3b266fa794a1f80f99b9671829e.camel@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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ce29ea35 |
| 09-Apr-2022 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
[ Upstream commit c127d130f6d59fa81701f6b04023cf7cd1972fb3 ]
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and th
powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr
[ Upstream commit c127d130f6d59fa81701f6b04023cf7cd1972fb3 ]
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and this function is called to initialize registers for receive and fault windows. But the real address is passed in winctx->rx_fifo for receive windows and the virtual address for fault windows which causes errors with DEBUG_VIRTUAL enabled. Fixes this issue by assigning only real address to rx_fifo in vas_rx_win_attr struct for both receive and fault windows.
Reported-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/338e958c7ab8f3b266fa794a1f80f99b9671829e.camel@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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Revision tags: v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.16, v5.15.10, v5.15.9, v5.15.8, v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65, v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60, v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46 |
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7bc6f71b |
| 17-Jun-2021 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Define and use common vas_window struct
Many elements in vas_struct are used on PowerNV and PowerVM platforms. vas_window is used for both TX and RX windows on PowerNV and for TX window
powerpc/vas: Define and use common vas_window struct
Many elements in vas_struct are used on PowerNV and PowerVM platforms. vas_window is used for both TX and RX windows on PowerNV and for TX windows on PowerVM. So some elements are specific to these platforms.
So this patch defines common vas_window and platform specific window structs (pnv_vas_window on PowerNV). Also adds the corresponding changes in PowerNV vas code.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1698c35c158dfe52c6d2166667823d3d4a463353.camel@linux.ibm.com
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#
3856aa54 |
| 17-Jun-2021 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Create take/drop pid and mm reference functions
Take pid and mm references when each window opens and drops during close. This functionality is needed for powerNV and pseries. So this p
powerpc/vas: Create take/drop pid and mm reference functions
Take pid and mm references when each window opens and drops during close. This functionality is needed for powerNV and pseries. So this patch defines the existing code as functions in common book3s platform vas-api.c
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/2fa40df962250a737c804e58202924717b39e381.camel@linux.ibm.com
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1a0d0d5e |
| 17-Jun-2021 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Add platform specific user window operations
PowerNV uses registers to open/close VAS windows, and getting the paste address. Whereas the hypervisor calls are used on PowerVM.
This pat
powerpc/vas: Add platform specific user window operations
PowerNV uses registers to open/close VAS windows, and getting the paste address. Whereas the hypervisor calls are used on PowerVM.
This patch adds the platform specific user space window operations and register with the common VAS user space interface.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/f85091f4ace67f951ac04d60394d67b21e2f5d3c.camel@linux.ibm.com
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413d6ed3 |
| 17-Jun-2021 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Move VAS API to book3s common platform
The pseries platform will share vas and nx code and interfaces with the PowerNV platform, so create the arch/powerpc/platforms/book3s/ directory a
powerpc/vas: Move VAS API to book3s common platform
The pseries platform will share vas and nx code and interfaces with the PowerNV platform, so create the arch/powerpc/platforms/book3s/ directory and move VAS API code there. Functionality is not changed.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e05c8db17b9eabe3545b902d034238e4c6c08180.camel@linux.ibm.com
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Revision tags: v5.10.43, v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35, v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32, v5.10.31, v5.10.30, v5.10.27, v5.10.26, v5.10.25, v5.10.24, v5.10.23, v5.10.22, v5.10.21, v5.10.20, v5.10.19, v5.4.101, v5.10.18, v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14, v5.10 |
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#
9dd31b11 |
| 12-Dec-2020 |
Cédric Le Goater <clg@kaod.org> |
powerpc/vas: Fix IRQ name allocation
The VAS device allocates a generic interrupt to handle page faults but the IRQ name doesn't show under /proc. This is because it's on stack. Allocate the name.
powerpc/vas: Fix IRQ name allocation
The VAS device allocates a generic interrupt to handle page faults but the IRQ name doesn't show under /proc. This is because it's on stack. Allocate the name.
Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201212142707.2102141-1-clg@kaod.org
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Revision tags: v5.8.17, v5.8.16, v5.8.15, v5.9, v5.8.14, v5.8.13, v5.8.12, v5.8.11, v5.8.10, v5.8.9, v5.8.8, v5.8.7, v5.8.6, v5.4.62, v5.8.5, v5.8.4, v5.4.61, v5.8.3, v5.4.60, v5.8.2, v5.4.59, v5.8.1, v5.4.58, v5.4.57, v5.4.56, v5.8, v5.7.12, v5.4.55, v5.7.11, v5.4.54, v5.7.10, v5.4.53, v5.4.52, v5.7.9, v5.7.8, v5.4.51, v5.4.50, v5.7.7, v5.4.49, v5.7.6, v5.7.5, v5.4.48, v5.7.4, v5.7.3, v5.4.47, v5.4.46, v5.7.2, v5.4.45, v5.7.1, v5.4.44, v5.7, v5.4.43, v5.4.42, v5.4.41, v5.4.40, v5.4.39, v5.4.38, v5.4.37, v5.4.36, v5.4.35, v5.4.34 |
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dda44eb2 |
| 17-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Add VAS user space API
On power9, userspace can send GZIP compression requests directly to NX once kernel establishes NX channel / window with VAS. This patch provides user space API wh
powerpc/vas: Add VAS user space API
On power9, userspace can send GZIP compression requests directly to NX once kernel establishes NX channel / window with VAS. This patch provides user space API which allows user space to establish channel using open VAS_TX_WIN_OPEN ioctl, mmap and close operations.
Each window corresponds to file descriptor and application can open multiple windows. After the window is opened, VAS_TX_WIN_OPEN icoctl to open a window on specific VAS instance, mmap() system call to map the hardware address of engine's request queue into the application's virtual address space.
Then the application can then submit one or more requests to the the engine by using the copy/paste instructions and pasting the CRBs to the virtual address (aka paste_address) returned by mmap().
Only NX GZIP coprocessor type is supported right now and allow GZIP engine access via /dev/crypto/nx-gzip device node.
Thanks to Michael Ellerman for his changes and suggestions to make the ioctl generic to support any coprocessor type.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587114121.2275.1109.camel@hbabu-laptop
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Revision tags: v5.4.33 |
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04f6296c |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Do not use default credits for receive window
System checkstops if RxFIFO overruns with more requests than the maximum possible number of CRBs allowed in FIFO at any time. So max credit
powerpc/vas: Do not use default credits for receive window
System checkstops if RxFIFO overruns with more requests than the maximum possible number of CRBs allowed in FIFO at any time. So max credits value (rxattr.wcreds_max) is set and is passed to vas_rx_win_open() by the the driver.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587017136.2275.1070.camel@hbabu-laptop
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461862ef |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Return credits after handling fault
NX uses credit mechanism to control the number of requests issued on a specific window at any point of time. Only send windows and fault window are u
powerpc/vas: Return credits after handling fault
NX uses credit mechanism to control the number of requests issued on a specific window at any point of time. Only send windows and fault window are used credits. When the request is issued on a given window, a credit is taken. This credit will be returned after that request is processed. If credits are not available, returns RMA_Busy for send window and RMA_Reject for fault window.
NX expects OS to return credit for send window after processing fault CRB. Also credit has to be returned for fault window after handling the fault.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587017059.2275.1064.camel@hbabu-laptop
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9774628a |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Setup thread IRQ handler per VAS instance
When NX encounters translation error on CRB and any request buffer, raises an interrupt on the CPU to handle the fault. It can raise one interr
powerpc/vas: Setup thread IRQ handler per VAS instance
When NX encounters translation error on CRB and any request buffer, raises an interrupt on the CPU to handle the fault. It can raise one interrupt for multiple faults. Expects OS to handle these faults and return credits for fault window after processing faults.
Setup thread IRQ handler and IRQ thread function per each VAS instance. IRQ handler checks if the thread is already woken up and can handle new faults. If so returns with IRQ_HANDLED, otherwise wake up thread to process new faults.
The thread functions reads each CRB entry from fault FIFO until sees invalid entry. After reading each CRB, determine the corresponding send window using pswid (from CRB) and process fault CRB. Then invalidate the entry and return credit. Processing fault CRB and return credit is described in subsequent patches.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587016982.2275.1060.camel@hbabu-laptop
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db1c08a7 |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Take reference to PID and mm for user space windows
When process opens a window, its pid and tgid will be saved in the vas_window struct. This window will be closed when the process exi
powerpc/vas: Take reference to PID and mm for user space windows
When process opens a window, its pid and tgid will be saved in the vas_window struct. This window will be closed when the process exits. The kernel handles NX faults by updating CSB or send SEGV signal to pid of the process if the userspace csb addr is invalid.
In multi-thread applications, a window can be opened by a child thread, but it will not be closed when this thread exits. It is expected that the parent will clean up all resources including NX windows opened by child threads. A child thread can send NX requests using this window and could be killed before completion is reported. If the pid assigned to this thread is reused while requests are pending, a failure SEGV would be directed to the wrong place.
To prevent reusing the pid, take references to pid and mm when the window is opened and release them when when the window is closed. Then if child thread is not running, SEGV signal will be sent to thread group leader (tgid).
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587016936.2275.1057.camel@hbabu-laptop
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8b8a73dc |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Register NX with fault window ID and IRQ port value
For each user space send window, register NX with fault window ID and port value so that NX paste CRBs in this fault FIFO when it see
powerpc/vas: Register NX with fault window ID and IRQ port value
For each user space send window, register NX with fault window ID and port value so that NX paste CRBs in this fault FIFO when it sees fault on the request buffer.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587016888.2275.1054.camel@hbabu-laptop
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0d17de03 |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Setup fault window per VAS instance
Setup fault window for each VAS instance. When NX gets a fault on request buffer, pastes fault CRB in the corresponding fault FIFO and then raises an
powerpc/vas: Setup fault window per VAS instance
Setup fault window for each VAS instance. When NX gets a fault on request buffer, pastes fault CRB in the corresponding fault FIFO and then raises an interrupt to the OS. The kernel handles this fault and process faults CRB from this FIFO.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587016846.2275.1053.camel@hbabu-laptop
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c20e1e29 |
| 16-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Alloc and setup IRQ and trigger port address
Allocate a xive irq on each chip with a vas instance. The NX coprocessor raises a host CPU interrupt via vas if it encounters page fault on
powerpc/vas: Alloc and setup IRQ and trigger port address
Allocate a xive irq on each chip with a vas instance. The NX coprocessor raises a host CPU interrupt via vas if it encounters page fault on user space request buffer. Subsequent patches register the trigger port with the NX coprocessor, and create a vas fault handler for this interrupt mapping.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587016806.2275.1050.camel@hbabu-laptop
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Revision tags: v5.4.32, v5.4.31, v5.4.30, v5.4.29, v5.6, v5.4.28, v5.4.27, v5.4.26, v5.4.25, v5.4.24, v5.4.23, v5.4.22, v5.4.21, v5.4.20, v5.4.19, v5.4.18, v5.4.17, v5.4.16, v5.5, v5.4.15, v5.4.14, v5.4.13, v5.4.12, v5.4.11, v5.4.10, v5.4.9, v5.4.8, v5.4.7, v5.4.6, v5.4.5, v5.4.4, v5.4.3, v5.3.15, v5.4.2, v5.4.1, v5.3.14, v5.4, v5.3.13, v5.3.12, v5.3.11, v5.3.10, v5.3.9, v5.3.8, v5.3.7, v5.3.6, v5.3.5, v5.3.4, v5.3.3, v5.3.2, v5.3.1, v5.3, v5.2.14, v5.3-rc8, v5.2.13, v5.2.12, v5.2.11, v5.2.10, v5.2.9, v5.2.8, v5.2.7, v5.2.6, v5.2.5, v5.2.4, v5.2.3, v5.2.2, v5.2.1, v5.2, v5.1.16 |
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452d23c0 |
| 25-Jun-2019 |
Christoph Hellwig <hch@lst.de> |
powerpc/powernv: remove the unused vas_win_paste_addr and vas_win_id functions
These two function have never been used anywhere in the kernel tree since they were added to the kernel.
Signed-off-by
powerpc/powernv: remove the unused vas_win_paste_addr and vas_win_id functions
These two function have never been used anywhere in the kernel tree since they were added to the kernel.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Revision tags: v5.1.15, v5.1.14, v5.1.13, v5.1.12, v5.1.11, v5.1.10, v5.1.9, v5.1.8, v5.1.7, v5.1.6 |
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2874c5fd |
| 27-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify it under the terms of th
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v5.1.5, v5.1.4, v5.1.3, v5.1.2, v5.1.1, v5.0.14, v5.1, v5.0.13, v5.0.12, v5.0.11, v5.0.10, v5.0.9, v5.0.8, v5.0.7, v5.0.6, v5.0.5, v5.0.4, v5.0.3, v4.19.29, v5.0.2, v4.19.28, v5.0.1, v4.19.27, v5.0, v4.19.26, v4.19.25, v4.19.24, v4.19.23, v4.19.22, v4.19.21, v4.19.20, v4.19.19, v4.19.18, v4.19.17, v4.19.16, v4.19.15, v4.19.14, v4.19.13, v4.19.12, v4.19.11, v4.19.10, v4.19.9, v4.19.8, v4.19.7, v4.19.6, v4.19.5, v4.19.4, v4.18.20, v4.19.3, v4.18.19, v4.19.2, v4.18.18, v4.18.17, v4.19.1, v4.19, v4.18.16, v4.18.15, v4.18.14, v4.18.13, v4.18.12, v4.18.11, v4.18.10, v4.18.9, v4.18.7, v4.18.6, v4.18.5, v4.17.18, v4.18.4, v4.18.3, v4.17.17, v4.18.2, v4.17.16, v4.17.15, v4.18.1, v4.18, v4.17.14, v4.17.13, v4.17.12, v4.17.11, v4.17.10, v4.17.9, v4.17.8, v4.17.7, v4.17.6, v4.17.5 |
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#
5c35a02c |
| 05-Jul-2018 |
Christophe Leroy <christophe.leroy@c-s.fr> |
powerpc: clean the inclusion of stringify.h
Only include linux/stringify.h is files using __stringify()
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mp
powerpc: clean the inclusion of stringify.h
Only include linux/stringify.h is files using __stringify()
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Revision tags: v4.17.4, v4.17.3, v4.17.2, v4.17.1, v4.17, v4.16, v4.15, v4.13.16, v4.14 |
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#
61f3cca8 |
| 07-Nov-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/vas: Define vas_win_id()
Define an interface to return a system-wide unique id for a given VAS window.
The vas_win_id() will be used in a follow-on patch to generate an unique handle for a
powerpc/vas: Define vas_win_id()
Define an interface to return a system-wide unique id for a given VAS window.
The vas_win_id() will be used in a follow-on patch to generate an unique handle for a user space receive window. Applications can use this handle to pair send and receive windows for fast thread-wakeup.
The hardware refers to this system-wide unique id as a Partition Send Window ID which is expected to be used during fault handling. Hence the "pswid" in the function names.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
ece4e512 |
| 07-Nov-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/vas: Export HVWC to debugfs
Export the VAS Window context information to debugfs.
We need to hold a mutex when closing the window to prevent a race with the debugfs read(). Rather than intr
powerpc/vas: Export HVWC to debugfs
Export the VAS Window context information to debugfs.
We need to hold a mutex when closing the window to prevent a race with the debugfs read(). Rather than introduce a per-instance mutex, we use the global vas_mutex for now, since it is not heavily contended.
The window->cop field is only relevant to a receive window so we were not setting it for a send window (which is is paired to a receive window anyway). But to simplify reporting in debugfs, set the 'cop' field for the send window also.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
62f659e0 |
| 07-Nov-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/vas: Save configured window credits
Save the configured max window credits for a window in the vas_window structure. We will need this when polling for return of window credits.
Signed-off-
powerpc/vas: Save configured window credits
Save the configured max window credits for a window in the vas_window structure. We will need this when polling for return of window credits.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
0a2c2c24 |
| 07-Nov-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/vas: Cleanup some debug code
Clean up vas.h and the debug code around ifdef vas_debug.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@e
powerpc/vas: Cleanup some debug code
Clean up vas.h and the debug code around ifdef vas_debug.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
51b53712 |
| 07-Nov-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/vas: Validate window credits
NX-842, the only user of VAS, sets the window credits to default values but VAS should check the credits against the possible max values.
The VAS_WCREDS_MIN is
powerpc/vas: Validate window credits
NX-842, the only user of VAS, sets the window credits to default values but VAS should check the credits against the possible max values.
The VAS_WCREDS_MIN is not needed and can be dropped.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Revision tags: v4.13.5, v4.13 |
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#
2392c8c8 |
| 29-Aug-2017 |
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> |
powerpc/powernv/vas: Define copy/paste interfaces
Define interfaces (wrappers) to the 'copy' and 'paste' instructions (which are new in PowerISA 3.0). These are intended to be used to by NX driver(s
powerpc/powernv/vas: Define copy/paste interfaces
Define interfaces (wrappers) to the 'copy' and 'paste' instructions (which are new in PowerISA 3.0). These are intended to be used to by NX driver(s) to submit Coprocessor Request Blocks (CRBs) to the NX hardware engines.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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