From: Jamin Lin <jamin_lin@aspeedtech.com>
To: "Cédric Le Goater" <clg@kaod.org>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Andrew Jeffery" <andrew@codeconstruct.com.au>,
"Joel Stanley" <joel@jms.id.au>,
"Alistair Francis" <alistair@alistair23.me>,
"Cleber Rosa" <crosa@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Wainer dos Santos Moschetta" <wainersm@redhat.com>,
"Beraldo Leal" <bleal@redhat.com>,
"open list:ASPEED BMCs" <qemu-arm@nongnu.org>,
"open list:All patches CC here" <qemu-devel@nongnu.org>
Cc: Troy Lee <troy_lee@aspeedtech.com>,
Yunlin Tang <yunlin.tang@aspeedtech.com>
Subject: RE: [PATCH v3 08/16] aspeed/smc: support 64 bits dma dram address
Date: Fri, 19 Apr 2024 06:00:22 +0000 [thread overview]
Message-ID: <SEYPR06MB50377414AEA2C2CAEF28A5E8FC0D2@SEYPR06MB5037.apcprd06.prod.outlook.com> (raw)
In-Reply-To: <9b6d5078-121d-4370-86fc-4bb25ad4e72f@kaod.org>
Hi Cedric,
>
> Hello Jamin,
>
> On 4/16/24 11:18, Jamin Lin wrote:
> > AST2700 support the maximum dram size is 8GiB and has a "DMA DRAM
> Side
> > Address High Part(0x7C)"
> > register to support 64 bits dma dram address.
> > Add helper routines functions to compute the dma dram address, new
> > features and update trace-event to support 64 bits dram address.
> >
> > Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
> > Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
> > ---
> > hw/ssi/aspeed_smc.c | 66
> +++++++++++++++++++++++++++++++++++++++------
> > hw/ssi/trace-events | 2 +-
> > 2 files changed, 59 insertions(+), 9 deletions(-)
> >
> > diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c index
> > 71abc7a2d8..a67cac3d0f 100644
> > --- a/hw/ssi/aspeed_smc.c
> > +++ b/hw/ssi/aspeed_smc.c
> > @@ -132,6 +132,9 @@
> > #define FMC_WDT2_CTRL_BOOT_SOURCE BIT(4) /* O: primary
> 1: alternate */
> > #define FMC_WDT2_CTRL_EN BIT(0)
> >
> > +/* DMA DRAM Side Address High Part (AST2700) */
> > +#define R_DMA_DRAM_ADDR_HIGH (0x7c / 4)
> > +
> > /* DMA Control/Status Register */
> > #define R_DMA_CTRL (0x80 / 4)
> > #define DMA_CTRL_REQUEST (1 << 31)
> > @@ -187,6 +190,7 @@
> > * 0x1FFFFFF: 32M bytes
> > */
> > #define DMA_DRAM_ADDR(asc, val) ((val) & (asc)->dma_dram_mask)
> > +#define DMA_DRAM_ADDR_HIGH(val) ((val) & 0xf)
> > #define DMA_FLASH_ADDR(asc, val) ((val) & (asc)->dma_flash_mask)
> > #define DMA_LENGTH(val) ((val) & 0x01FFFFFF)
> >
> > @@ -207,6 +211,7 @@ static const AspeedSegments
> aspeed_2500_spi2_segments[];
> > #define ASPEED_SMC_FEATURE_DMA 0x1
> > #define ASPEED_SMC_FEATURE_DMA_GRANT 0x2
> > #define ASPEED_SMC_FEATURE_WDT_CONTROL 0x4
> > +#define ASPEED_SMC_FEATURE_DMA_DRAM_ADDR_HIGH 0x08
> >
> > static inline bool aspeed_smc_has_dma(const AspeedSMCClass *asc)
> > {
> > @@ -218,6 +223,11 @@ static inline bool
> aspeed_smc_has_wdt_control(const AspeedSMCClass *asc)
> > return !!(asc->features & ASPEED_SMC_FEATURE_WDT_CONTROL);
> > }
> >
> > +static inline bool aspeed_smc_has_dma_dram_addr_high(const
> > +AspeedSMCClass *asc)
>
> To ease the reading, I would call the helper aspeed_smc_has_dma64()
Will fix it
>
> > +{
> > + return !!(asc->features &
> ASPEED_SMC_FEATURE_DMA_DRAM_ADDR_HIGH);
> > +}
> > +
> > #define aspeed_smc_error(fmt, ...)
> \
> > qemu_log_mask(LOG_GUEST_ERROR, "%s: " fmt "\n", __func__, ##
> > __VA_ARGS__)
> >
> > @@ -747,6 +757,9 @@ static uint64_t aspeed_smc_read(void *opaque,
> hwaddr addr, unsigned int size)
> > (aspeed_smc_has_dma(asc) && addr == R_DMA_CTRL) ||
> > (aspeed_smc_has_dma(asc) && addr == R_DMA_FLASH_ADDR)
> ||
> > (aspeed_smc_has_dma(asc) && addr == R_DMA_DRAM_ADDR)
> ||
> > + (aspeed_smc_has_dma(asc) &&
> > + aspeed_smc_has_dma_dram_addr_high(asc) &&
> > + addr == R_DMA_DRAM_ADDR_HIGH) ||
> > (aspeed_smc_has_dma(asc) && addr == R_DMA_LEN) ||
> > (aspeed_smc_has_dma(asc) && addr == R_DMA_CHECKSUM)
> ||
> > (addr >= R_SEG_ADDR0 &&
> > @@ -847,6 +860,23 @@ static bool
> aspeed_smc_inject_read_failure(AspeedSMCState *s)
> > }
> > }
> >
> > +static uint64_t aspeed_smc_dma_dram_addr(AspeedSMCState *s) {
> > + AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
> > + uint64_t dram_addr_high;
> > + uint64_t dma_dram_addr;
> > +
> > + if (aspeed_smc_has_dma_dram_addr_high(asc)) {
> > + dram_addr_high = s->regs[R_DMA_DRAM_ADDR_HIGH];
> > + dram_addr_high <<= 32;
> > + dma_dram_addr = dram_addr_high |
> s->regs[R_DMA_DRAM_ADDR];
>
> Here is a proposal to shorten the routine :
>
> return ((uint64_t) s->regs[R_DMA_DRAM_ADDR_HIGH] << 32) |
> s->regs[R_DMA_DRAM_ADDR];
>
>
> > + } else {
> > + dma_dram_addr = s->regs[R_DMA_DRAM_ADDR];
>
> and
> return s->regs[R_DMA_DRAM_ADDR];
>
> > + }
> > +
> > + return dma_dram_addr;
> > +}
> > +
Thanks for your suggestion. Will fix.
> > static uint32_t aspeed_smc_dma_len(AspeedSMCState *s)
> > {
> > AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s); @@ -914,24
> > +944,34 @@ static void aspeed_smc_dma_checksum(AspeedSMCState *s)
> >
> > static void aspeed_smc_dma_rw(AspeedSMCState *s)
> > {
> > + AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
> > + uint64_t dram_addr_high;
>
> This variable doesn't look very useful
Will try to remove it.
>
> > + uint64_t dma_dram_addr;
> > + uint64_t dram_addr;
>
> and dram_addr is redundant with dma_dram_addr. Please use only one.
Please see my below description and please give us any suggestion.
>
>
> > MemTxResult result;
> > uint32_t dma_len;
> > uint32_t data;
> >
> > dma_len = aspeed_smc_dma_len(s);
> > + dma_dram_addr = aspeed_smc_dma_dram_addr(s);
> > +
> > + if (aspeed_smc_has_dma_dram_addr_high(asc)) {
> > + dram_addr = dma_dram_addr - s->dram_mr->container->addr;
>
> Why do you truncate the address again ? It should already be done with
>
> #define DMA_DRAM_ADDR_HIGH(val) ((val) & 0xf)
>
The reason is that our firmware set the real address in SMC registers.
For example: If users want to move data from flash to the DRAM at address 0,
It set R_DMA_DRAM_ADDR_HIGH 4 and R_DMA_DRAM_ADDR 0 because the
dram base address is 0x 4 00000000 for AST2700.
According to the design of QEMU, the dram container base address is 0x4 00000000(s->dram_mr).
Therefore, in the above example, the data should be moved to the dram container at address 0.
I created two variables to save the different base address.
A dma_dram_addr is used to save the real address.
A dram_addr is used to save the address for dram container(s->dram_as)
Example:
dma_dram_addr is 0x4 00000000
(uint64) s->regs[R_DMA_DRAM_ADDR_HIGH] << 32) |s->regs[R_DMA_DRAM_ADDR]
dram_addr is 0
dram_addr = 0x400000000(real address) - 0x400000000(dram container base address) to get the address for dram contained for moving
dram_addr = dma_dram_addr - s->dram_mr->container->addr;
Finally, the following APIs could work properly.
data = address_space_ldl_le(&s->dram_as, dram_addr,
MEMTXATTRS_UNSPECIFIED, &result);
Thanks-Jamin
> > + } else {
> > + dram_addr = dma_dram_addr;
> > + }
> >
> > trace_aspeed_smc_dma_rw(s->regs[R_DMA_CTRL] &
> DMA_CTRL_WRITE ?
> > "write" : "read",
> > s->regs[R_DMA_FLASH_ADDR],
> > - s->regs[R_DMA_DRAM_ADDR],
> > + dram_addr,
> > dma_len);
> > while (dma_len) {
> > if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) {
> > - data = address_space_ldl_le(&s->dram_as,
> s->regs[R_DMA_DRAM_ADDR],
> > + data = address_space_ldl_le(&s->dram_as, dram_addr,
> >
> MEMTXATTRS_UNSPECIFIED, &result);
> > if (result != MEMTX_OK) {
> > - aspeed_smc_error("DRAM read failed @%08x",
> > - s->regs[R_DMA_DRAM_ADDR]);
> > + aspeed_smc_error("DRAM read failed @%" PRIx64,
> > + dram_addr);
> > return;
> > }
> >
> > @@ -951,11 +991,10 @@ static void aspeed_smc_dma_rw(AspeedSMCState
> *s)
> > return;
> > }
> >
> > - address_space_stl_le(&s->dram_as,
> s->regs[R_DMA_DRAM_ADDR],
> > + address_space_stl_le(&s->dram_as, dram_addr,
> > data,
> MEMTXATTRS_UNSPECIFIED, &result);
> > if (result != MEMTX_OK) {
> > - aspeed_smc_error("DRAM write failed @%08x",
> > - s->regs[R_DMA_DRAM_ADDR]);
> > + aspeed_smc_error("DRAM write failed @%" PRIx64,
> > + dram_addr);
> > return;
> > }
> > }
> > @@ -964,8 +1003,15 @@ static void aspeed_smc_dma_rw(AspeedSMCState
> *s)
> > * When the DMA is on-going, the DMA registers are updated
> > * with the current working addresses and length.
> > */
> > + dram_addr += 4;
> > + dma_dram_addr += 4;
> > + if (aspeed_smc_has_dma_dram_addr_high(asc)) {
> > + dram_addr_high = dma_dram_addr >> 32;
> > + s->regs[R_DMA_DRAM_ADDR_HIGH] = dram_addr_high;
>
> s->regs[R_DMA_DRAM_ADDR_HIGH] = dma_dram_addr >>
> 32;
>
> > + }
> > +
> > + s->regs[R_DMA_DRAM_ADDR] = dma_dram_addr & 0xffffffff;
>
> use DMA_DRAM_ADDR() may be instead.
>
> > s->regs[R_DMA_FLASH_ADDR] += 4;
> > - s->regs[R_DMA_DRAM_ADDR] += 4;
> > dma_len -= 4;
> > s->regs[R_DMA_LEN] = dma_len;
> > s->regs[R_DMA_CHECKSUM] += data; @@ -1118,6 +1164,10
> @@
> > static void aspeed_smc_write(void *opaque, hwaddr addr, uint64_t data,
> > } else if (aspeed_smc_has_dma(asc) && addr == R_DMA_LEN &&
> > aspeed_smc_dma_granted(s)) {
> > s->regs[addr] = DMA_LENGTH(value);
> > + } else if (aspeed_smc_has_dma(asc) &&
> > + aspeed_smc_has_dma_dram_addr_high(asc) &&
> > + addr == R_DMA_DRAM_ADDR_HIGH) {
> > + s->regs[addr] = DMA_DRAM_ADDR_HIGH(value);
> > } else {
> > qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%"
> HWADDR_PRIx "\n",
> > __func__, addr); diff --git
> > a/hw/ssi/trace-events b/hw/ssi/trace-events index
> > 2d5bd2b83d..7b5ad6a939 100644
> > --- a/hw/ssi/trace-events
> > +++ b/hw/ssi/trace-events
> > @@ -6,7 +6,7 @@ aspeed_smc_do_snoop(int cs, int index, int dummies, int
> data) "CS%d index:0x%x d
> > aspeed_smc_flash_write(int cs, uint64_t addr, uint32_t size, uint64_t
> data, int mode) "CS%d @0x%" PRIx64 " size %u: 0x%" PRIx64" mode:%d"
> > aspeed_smc_read(uint64_t addr, uint32_t size, uint64_t data) "@0x%"
> PRIx64 " size %u: 0x%" PRIx64
> > aspeed_smc_dma_checksum(uint32_t addr, uint32_t data) "0x%08x:
> 0x%08x"
> > -aspeed_smc_dma_rw(const char *dir, uint32_t flash_addr, uint32_t
> dram_addr, uint32_t size) "%s flash:@0x%08x dram:@0x%08x size:0x%08x"
> > +aspeed_smc_dma_rw(const char *dir, uint32_t flash_addr, uint64_t
> dram_addr, uint32_t size) "%s flash:@0x%08x dram:@0x%" PRIx64 "
> size:0x%08x"
> > aspeed_smc_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%"
> PRIx64 " size %u: 0x%" PRIx64
> > aspeed_smc_flash_select(int cs, const char *prefix) "CS%d %sselect"
> >
next prev parent reply other threads:[~2024-04-19 6:01 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 9:18 [PATCH v3 00/16] Add AST2700 support Jamin Lin via
2024-04-16 9:18 ` [PATCH v3 01/16] aspeed/wdt: " Jamin Lin via
2024-04-16 9:18 ` [PATCH v3 02/16] aspeed/sli: " Jamin Lin via
2024-04-16 15:29 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 03/16] aspeed/sdmc: remove redundant macros Jamin Lin via
2024-04-16 15:30 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 04/16] aspeed/sdmc: fix coding style Jamin Lin via
2024-04-16 15:30 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 05/16] aspeed/sdmc: Add AST2700 support Jamin Lin via
2024-04-16 15:34 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 06/16] aspeed/smc: correct device description Jamin Lin via
2024-04-16 15:34 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 07/16] aspeed/smc: fix dma moving incorrect data length issue Jamin Lin via
2024-04-19 13:41 ` Cédric Le Goater
2024-04-30 7:22 ` Cédric Le Goater
2024-04-30 8:51 ` Jamin Lin
2024-05-03 14:35 ` Cédric Le Goater
2024-05-15 4:05 ` Jamin Lin
2024-04-16 9:18 ` [PATCH v3 08/16] aspeed/smc: support 64 bits dma dram address Jamin Lin via
2024-04-18 16:09 ` Cédric Le Goater
2024-04-19 6:00 ` Jamin Lin [this message]
2024-04-30 7:26 ` Cédric Le Goater
2024-04-30 7:56 ` Jamin Lin
2024-05-03 14:20 ` Cédric Le Goater
2024-05-15 8:56 ` Jamin Lin
2024-05-07 14:19 ` Cédric Le Goater
2024-05-15 9:01 ` Jamin Lin
2024-05-17 7:57 ` Cédric Le Goater
2024-05-20 2:40 ` Jamin Lin
2024-05-27 6:46 ` Cédric Le Goater
2024-05-27 6:48 ` Jamin Lin
2024-04-16 9:18 ` [PATCH v3 09/16] aspeed/smc: Add AST2700 support Jamin Lin via
2024-04-18 16:14 ` Cédric Le Goater
2024-04-16 9:18 ` [PATCH v3 10/16] aspeed/scu: " Jamin Lin via
2024-04-16 9:18 ` [PATCH v3 11/16] aspeed/intc: " Jamin Lin via
2024-05-07 13:33 ` Cédric Le Goater
2024-05-21 6:40 ` Jamin Lin
2024-05-21 7:44 ` Jamin Lin
2024-04-16 9:18 ` [PATCH v3 12/16] aspeed/soc: " Jamin Lin via
2024-04-19 7:10 ` Cédric Le Goater
2024-04-19 7:58 ` Jamin Lin
2024-05-17 7:58 ` Cédric Le Goater
2024-05-17 9:13 ` Jamin Lin
2024-05-07 13:06 ` Cédric Le Goater
2024-04-16 9:19 ` [PATCH v3 13/16] aspeed: Add an AST2700 eval board Jamin Lin via
2024-04-16 9:19 ` [PATCH v3 14/16] aspeed/soc: fix incorrect dram size for AST2700 Jamin Lin via
2024-04-16 9:19 ` [PATCH v3 15/16] test/avocado/machine_aspeed.py: Add AST2700 test case Jamin Lin via
2024-04-16 16:44 ` Cédric Le Goater
2024-04-16 9:19 ` [PATCH v3 16/16] docs:aspeed: Add AST2700 Evaluation board Jamin Lin via
2024-04-16 15:54 ` Cédric Le Goater
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=SEYPR06MB50377414AEA2C2CAEF28A5E8FC0D2@SEYPR06MB5037.apcprd06.prod.outlook.com \
--to=jamin_lin@aspeedtech.com \
--cc=alistair@alistair23.me \
--cc=andrew@codeconstruct.com.au \
--cc=bleal@redhat.com \
--cc=clg@kaod.org \
--cc=crosa@redhat.com \
--cc=joel@jms.id.au \
--cc=peter.maydell@linaro.org \
--cc=philmd@linaro.org \
--cc=qemu-arm@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=troy_lee@aspeedtech.com \
--cc=wainersm@redhat.com \
--cc=yunlin.tang@aspeedtech.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).