Create a spi buses with distinct names on each socket so that responders
are attached to correct SPI controllers.
Change the bus name to chipX.spi.<busnum> where X = 0..<num_sockets>
QOM tree on a 2 socket machine:
(qemu) info qom-tree
/machine (powernv10-machine)
/chip[0] (power10_v2.0-pnv-chip)
/pib_spic[0] (pnv-spi)
/chip0.spi.0 (SSI)
/xscom-spi[0] (memory-region)
/chip[1] (power10_v2.0-pnv-chip)
/pib_spic[0] (pnv-spi)
/chip1.spi.0 (SSI)
/xscom-spi[0] (memory-region)
Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Message-ID: <20250303141328.23991-4-chalapathi.v@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
According to the design of ASPEED SPI controllers user mode, users write the
data to flash, the SPI drivers set the Control Register(0x10) bit 0 and 1
enter user mode. Then, SPI drivers send flash commands for writing data.
Finally, SPI drivers set the Control Register (0x10) bit 2 to stop
active control and restore bit 0 and 1.
According to the design of ASPEED SMC model, firmware writes the
Control Register and the "aspeed_smc_flash_update_ctrl" function is called.
Then, this function verify Control Register(0x10) bit 0 and 1. If it set user
mode, the value of s->snoop_index is SNOOP_START else SNOOP_OFF.
If s->snoop_index is SNOOP_START, the "aspeed_smc_do_snoop" function verify
the first incomming data is a new flash command and writes the corresponding
dummy bytes if need.
However, it did not check the current unselect status. If current unselect
status is "false" and firmware set the IO MODE by Control Register bit 31:28,
the value of s->snoop_index will be changed to SNOOP_START again and
"aspeed_smc_do_snoop" misunderstand that the incomming data is the new flash
command and it causes writing unexpected data into flash.
Example:
1. Firmware set user mode by Control Register bit 0 and 1(0x03)
2. SMC model set s->snoop SNOOP_START
3. Firmware set Quad Page Program with 4-Byte Address command (0x34)
4. SMC model verify this flash command and it needs 4 dummy bytes.
5. Firmware send 4 bytes address.
6. SMC model receives 4 bytes address
7. Firmware set QPI IO MODE by Control Register bit 31. (0x80000003)
8. SMC model verify new user mode by Control Register bit 0 and 1.
Then, set s->snoop SNOOP_START again. (It is the wrong behavior.)
9. Firmware send 0xebd8c134 data and it should be written into flash.
However, SMC model misunderstand that the first incoming data, 0x34,
is the new command because the value of s->snoop is changed to SNOOP_START.
Finally, SMC sned the incorrect data to flash model.
Introduce a new unselect attribute in AspeedSMCState to save the current
unselect status for user mode and set it "true" by default.
Update "aspeed_smc_flash_update_ctrl" function to check the previous unselect
status. If both new unselect status and previous unselect status is different,
update s->snoop_index value and call "aspeed_smc_flash_do_select".
Increase VMStateDescription version.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
[ clg: - Replaced VMSTATE_BOOL -> VMSTATE_BOOL_V ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This patch implements Allwinner A10 SPI controller emulation.
Only master-mode functionality is implemented.
Since U-Boot and Linux SPI drivers for Allwinner A10 perform only
byte-wide CPU access (no DMA) to the transmit and receive registers of
the peripheral, the emulated controller does not implement DMA control,
and supports only byte-wide access to transmit and receive registers
(half-word and word accesses will be treated as byte accesses).
Signed-off-by: Strahinja Jankovic <strahinja.p.jankovic@gmail.com>
Message-id: 20241001221349.8319-2-strahinja.p.jankovic@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In this commit SPI shift engine and sequencer logic is implemented.
Shift engine performs serialization and de-serialization according to the
control by the sequencer and according to the setup defined in the
configuration registers. Sequencer implements the main control logic and
FSM to handle data transmit and data receive control of the shift engine.
Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
SPI controller device model supports a connection to a single SPI responder.
This provide access to SPI seeproms, TPM, flash device and an ADC controller.
All SPI function control is mapped into the SPI register space to enable full
control by firmware. In this commit SPI configuration component is modelled
which contains all SPI configuration and status registers as well as the hold
registers for data to be sent or having been received.
An existing QEMU SSI framework is used and SSI_BUS is created.
Signed-off-by: Chalapathi V <chalapathi.v@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
[np: Fix FDT macro compile for qtest]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
It set "aspeed_smc_flash_ops" struct which containing
read and write callbacks to be used when I/O is performed
on the SMC flash region. And it set the valid max_access_size 4
by default for all ASPEED SMC models.
However, the valid max_access_size 4 only support 32 bits CPUs.
To support all ASPEED SMC model, introduce a new
"const MemoryRegionOps *" attribute in AspeedSMCClass and
use it in aspeed_smc_flash_realize function.
Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
DMA length is from 1 byte to 32MB for AST2600 and AST10x0
and DMA length is from 4 bytes to 32MB for AST2500.
In other words, if "R_DMA_LEN" is 0, it should move at least 1 byte
data for AST2600 and AST10x0 and 4 bytes data for AST2500.
To support all ASPEED SOCs, adds dma_start_length parameter to store
the start length, add helper routines function to compute the dma length
and update DMA_LENGTH mask to "1FFFFFF" to support dma 1 byte
length unit for AST2600 and AST1030.
Currently, only supports dma length 4 bytes aligned.
Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
The Aspeed SMC device model use to have a 'sdram_base' property. It
was removed by commit d177892d4a ("aspeed/smc: Remove unused
"sdram-base" property") because previous changes simplified the DMA
transaction model to use an offset in RAM and not the physical
address.
The AST2700 SoC has larger address space (64-bit) and a new register
DMA DRAM Side Address High Part (0x7C) is introduced to deal with the
high bits of the DMA address. To be able to compute the offset of the
DMA transaction, as done on the other SoCs, we will need to know where
the DRAM is mapped in the address space. Re-introduce a "dram-base"
property to hold this value.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Jamin Lin <jamin_lin@aspeedtech.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The spips, qspips, and zynqmp-qspips share the same realize function
(xilinx_spips_realize) and initialize their io memory region with different
mmio_ops passed through the class. The size of the memory region is set to
the largest area (0x200 bytes for zynqmp-qspips) thus it is possible to write
out of s->regs[addr] in xilinx_spips_write for spips and qspips.
This fixes that wrong behavior.
Reviewed-by: Luc Michel <luc.michel@amd.com>
Signed-off-by: Frederic Konrad <fkonrad@amd.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
Message-id: 20231124143505.1493184-2-fkonrad@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Simple routine to retrieve a DeviceState object on a SPI bus using its
CS index. It will be useful for the board to wire the CS lines.
Cc: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Boards will use this new property to identify the device CS line and
wire the SPI controllers accordingly.
Cc: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
hw.h only contains the protoype of one function nowadays, hw_error(),
so all files that do not use this function anymore also do not need
to include this header anymore.
Message-Id: <20230216142915.304481-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Store a reference on the AspeedSMC class under the flash object and
use it when accessing the flash contents. Avoiding the class cast
checkers in these hot paths improves performance by 10% when running
the aspeed avocado tests.
Message-Id: <20220923084803.498337-7-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Investigating why some BMC models are so slow compared to a plain ARM
virt machines I did some profiling of:
./qemu-system-arm -M romulus-bmc -nic user \
-drive
file=obmc-phosphor-image-romulus.static.mtd,format=raw,if=mtd \
-nographic -serial mon:stdio
And saw that object_class_dynamic_cast_assert was dominating the
profile times. We have a number of cases in this model of the SSI bus.
As the class is static once the object is created we just cache it and
use it instead of the dynamic case macros.
Profiling against:
./tests/venv/bin/avocado run \
tests/avocado/machine_aspeed.py:test_arm_ast2500_romulus_openbmc_v2_9_0
Before: 35.565 s ± 0.087 s
After: 15.713 s ± 0.287 s
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Cédric Le Goater <clg@kaod.org>
Tested-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220811151413.3350684-6-alex.bennee@linaro.org>
Message-Id: <20220923084803.498337-6-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Header guard symbols should match their file name to make guard
collisions less likely.
Cleaned up with scripts/clean-header-guards.pl, followed by some
renaming of new guard symbols picked by the script to better ones.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220506134911.2856099-2-armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[Change to generated file ebpf/rss.bpf.skeleton.h backed out]
