[Skiboot] [PATCH v2 2/2] hw/phys_map: Use GCIDs as a chip index
Oliver O'Halloran
oohall at gmail.com
Fri May 19 12:40:32 AEST 2017
Currently we pass in a proc_chip structure to phys_map_get(). All we we
really need from this structure is the Global Chip ID (GCID). This
patch reworks the function so that we only need to pass the GCID which
allows us to use it before the proc_chip structures have been
initialised (i.e in the HDAT parser).
Cc: Michael Neuling <mikey at neuling.org>
Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
---
hdata/fsp.c | 2 +-
hw/nx.c | 2 +-
hw/phb4.c | 10 ++++------
hw/phys-map.c | 9 +++++----
hw/test/phys-map-test.c | 10 +++++-----
hw/xive.c | 12 +++++-------
include/phys-map.h | 2 +-
7 files changed, 22 insertions(+), 25 deletions(-)
diff --git a/hdata/fsp.c b/hdata/fsp.c
index 5487f33191ea..6953d97b5e2a 100644
--- a/hdata/fsp.c
+++ b/hdata/fsp.c
@@ -325,7 +325,7 @@ static void bmc_create_node(const struct HDIF_common_hdr *sp)
*/
chip_id = pcid_to_chip_id(be32_to_cpu(iopath->lpc.chip_id));
- phys_map_get(get_chip(chip_id), LPC_BUS, 0, &lpcm_base, NULL);
+ phys_map_get(chip_id, LPC_BUS, 0, &lpcm_base, NULL);
lpcm = dt_new_addr(dt_root, "lpcm-opb", lpcm_base);
assert(lpcm);
diff --git a/hw/nx.c b/hw/nx.c
index d962b01a7535..1c269292b160 100644
--- a/hw/nx.c
+++ b/hw/nx.c
@@ -50,7 +50,7 @@ void nx_p9_rng_init(void)
*/
for_each_chip(chip) {
/* 1) NX RNG BAR */
- phys_map_get(chip, NX_RNG, 0, &bar, NULL);
+ phys_map_get(chip->id, NX_RNG, 0, &bar, NULL);
xscom_write(chip->id, P9X_NX_MMIO_BAR,
bar | P9X_NX_MMIO_BAR_EN);
/* Read config register for pace info */
diff --git a/hw/phb4.c b/hw/phb4.c
index 1d6d5ccb9601..957473346a33 100644
--- a/hw/phb4.c
+++ b/hw/phb4.c
@@ -3437,13 +3437,11 @@ static void phb4_probe_stack(struct dt_node *stk_node, uint32_t pec_index,
uint64_t mmio_win[4];
unsigned int mmio_win_sz;
struct dt_node *np;
- struct proc_chip *chip;
char *path;
uint64_t capp_ucode_base;
unsigned int max_link_speed;
gcid = dt_get_chip_id(stk_node);
- chip = get_chip(gcid);
stk_index = dt_prop_get_u32(stk_node, "reg");
phb_num = dt_prop_get_u32(stk_node, "ibm,phb-index");
path = dt_get_path(stk_node);
@@ -3462,24 +3460,24 @@ static void phb4_probe_stack(struct dt_node *stk_node, uint32_t pec_index,
bar_en = 0;
/* Initialize PHB register BAR */
- phys_map_get(chip, PHB4_REG_SPC, phb_num, &phb_bar, NULL);
+ phys_map_get(gcid, PHB4_REG_SPC, phb_num, &phb_bar, NULL);
xscom_write(gcid, nest_stack + XPEC_NEST_STK_PHB_REG_BAR, phb_bar << 8);
bar_en |= XPEC_NEST_STK_BAR_EN_PHB;
/* Same with INT BAR (ESB) */
- phys_map_get(chip, PHB4_XIVE_ESB, phb_num, &irq_bar, NULL);
+ phys_map_get(gcid, PHB4_XIVE_ESB, phb_num, &irq_bar, NULL);
xscom_write(gcid, nest_stack + XPEC_NEST_STK_IRQ_BAR, irq_bar << 8);
bar_en |= XPEC_NEST_STK_BAR_EN_INT;
/* Same with MMIO windows */
- phys_map_get(chip, PHB4_64BIT_MMIO, phb_num, &mmio0_bar, &mmio0_sz);
+ phys_map_get(gcid, PHB4_64BIT_MMIO, phb_num, &mmio0_bar, &mmio0_sz);
mmio0_bmask = (~(mmio0_sz - 1)) & 0x00FFFFFFFFFFFFFFULL;
xscom_write(gcid, nest_stack + XPEC_NEST_STK_MMIO_BAR0, mmio0_bar << 8);
xscom_write(gcid, nest_stack + XPEC_NEST_STK_MMIO_BAR0_MASK, mmio0_bmask << 8);
- phys_map_get(chip, PHB4_32BIT_MMIO, phb_num, &mmio1_bar, &mmio1_sz);
+ phys_map_get(gcid, PHB4_32BIT_MMIO, phb_num, &mmio1_bar, &mmio1_sz);
mmio1_bmask = (~(mmio1_sz - 1)) & 0x00FFFFFFFFFFFFFFULL;
xscom_write(gcid, nest_stack + XPEC_NEST_STK_MMIO_BAR1, mmio1_bar << 8);
xscom_write(gcid, nest_stack + XPEC_NEST_STK_MMIO_BAR1_MASK, mmio1_bmask << 8);
diff --git a/hw/phys-map.c b/hw/phys-map.c
index cab23f6c9ede..e99983f62909 100644
--- a/hw/phys-map.c
+++ b/hw/phys-map.c
@@ -135,10 +135,11 @@ static inline bool phys_map_entry_null(const struct phys_map_entry *e)
return false;
}
+
/* This crashes skiboot on error as any bad calls here are almost
* certainly a developer error
*/
-void phys_map_get(struct proc_chip *chip, enum phys_map_type type,
+void phys_map_get(uint64_t gcid, enum phys_map_type type,
int index, uint64_t *addr, uint64_t *size) {
const struct phys_map_entry *e;
uint64_t a;
@@ -163,16 +164,16 @@ void phys_map_get(struct proc_chip *chip, enum phys_map_type type,
break;
}
a = e->addr;
- a += (uint64_t)chip->id << phys_map->chip_select_shift;
+ a += gcid << phys_map->chip_select_shift;
if (addr)
*addr = a;
if (size)
*size = e->size;
- prlog(PR_TRACE, "Assigning BAR [%x] type:%02i index:%x "
+ prlog(PR_TRACE, "Assigning BAR [%"PRIx64"] type:%02i index:%x "
"0x%016"PRIx64" for 0x%016"PRIx64"\n",
- chip->id, type, index, a, e->size);
+ gcid, type, index, a, e->size);
return;
diff --git a/hw/test/phys-map-test.c b/hw/test/phys-map-test.c
index 33810745f99e..ab75a1e6e0be 100644
--- a/hw/test/phys-map-test.c
+++ b/hw/test/phys-map-test.c
@@ -84,9 +84,12 @@ static inline bool map_call_entry_null(const struct map_call_entry *t)
/* Check calls to map to see if they overlap.
* Creates a new table for each of the entries it gets to check against
*/
+
+/* Pick a chip ID, any ID. */
+#define FAKE_CHIP_ID 8
+
static void check_map_call(void)
{
- struct proc_chip c;
uint64_t start, size, end;
const struct phys_map_entry *e;
struct map_call_entry *tbl, *t, *tnext;
@@ -102,12 +105,9 @@ static void check_map_call(void)
assert(tbl != NULL);
memset(tbl, 0, tbl_size);
- /* Fake we are chip id 8. Any id will do */
- c.id = 8;
-
/* Loop over table entries ... */
for (e = phys_map->table; !phys_map_entry_null(e); e++) {
- phys_map_get(&c, e->type, e->index, &start, &size);
+ phys_map_get(FAKE_CHIP_ID, e->type, e->index, &start, &size);
/* Check for alignment */
if ((e->type != SYSTEM_MEM) && (e->type != RESV)) {
diff --git a/hw/xive.c b/hw/xive.c
index 6db4d42aa10c..eac8acbce6fc 100644
--- a/hw/xive.c
+++ b/hw/xive.c
@@ -1548,12 +1548,11 @@ static bool xive_read_bars(struct xive *x)
static bool xive_configure_bars(struct xive *x)
{
- struct proc_chip chip;
- struct proc_chip *c = get_chip(x->chip_id);
+ uint64_t chip_id = x->chip_id;
uint64_t val;
/* IC BAR */
- phys_map_get(c, XIVE_IC, 0, (uint64_t *)&x->ic_base, &x->ic_size);
+ phys_map_get(chip_id, XIVE_IC, 0, (uint64_t *)&x->ic_base, &x->ic_size);
val = (uint64_t)x->ic_base | CQ_IC_BAR_VALID;
if (IC_PAGE_SIZE == 0x10000) {
val |= CQ_IC_BAR_64K;
@@ -1568,8 +1567,7 @@ static bool xive_configure_bars(struct xive *x)
* for each chip !!! Hence we create a fake chip 0 and use that for
* all phys_map_get(XIVE_TM) calls.
*/
- chip.id = 0;
- phys_map_get(&chip, XIVE_TM, 0, (uint64_t *)&x->tm_base, &x->tm_size);
+ phys_map_get(0, XIVE_TM, 0, (uint64_t *)&x->tm_base, &x->tm_size);
val = (uint64_t)x->tm_base | CQ_TM_BAR_VALID;
if (TM_PAGE_SIZE == 0x10000) {
x->tm_shift = 16;
@@ -1584,7 +1582,7 @@ static bool xive_configure_bars(struct xive *x)
return false;
/* PC BAR. Clear first, write mask, then write value */
- phys_map_get(c, XIVE_PC, 0, (uint64_t *)&x->pc_base, &x->pc_size);
+ phys_map_get(chip_id, XIVE_PC, 0, (uint64_t *)&x->pc_base, &x->pc_size);
xive_regwx(x, CQ_PC_BAR, 0);
if (x->last_reg_error)
return false;
@@ -1598,7 +1596,7 @@ static bool xive_configure_bars(struct xive *x)
return false;
/* VC BAR. Clear first, write mask, then write value */
- phys_map_get(c, XIVE_VC, 0, (uint64_t *)&x->vc_base, &x->vc_size);
+ phys_map_get(chip_id, XIVE_VC, 0, (uint64_t *)&x->vc_base, &x->vc_size);
xive_regwx(x, CQ_VC_BAR, 0);
if (x->last_reg_error)
return false;
diff --git a/include/phys-map.h b/include/phys-map.h
index 50ff0c42241a..434b159e8ae8 100644
--- a/include/phys-map.h
+++ b/include/phys-map.h
@@ -54,7 +54,7 @@ enum phys_map_type {
RESV
};
-extern void phys_map_get(struct proc_chip *chip, enum phys_map_type type,
+extern void phys_map_get(uint64_t gcid, enum phys_map_type type,
int index, uint64_t *addr, uint64_t *size);
extern void phys_map_init(void);
--
2.9.3
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